Home / Journals / PHYTON / Vol.90, No.2, 2021

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Tea is one of the most famous three traditional beverages. In recent years, hyperspectral imaging technology has shown great potential in detecting and differentiating plant diseases, pests, and some other stresses at the leaf level. However, the lack of studies at canopy level hampers the detection of tea plant stresses at a larger scale. In this issue, Cui et al. proposed a stepwise procedure based on the canopy level hyperspectral imaging data and spectral analysis, image processing, and machine learning approaches. The results show the feasibility of present methods in large-scale detection of stresses in tea plantations.
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  • Open Access

    REVIEW

    Non-Canonical Functions of the E2F/DP Pathway with Emphasis in Plants

    Víctor A. Sánchez-Camargo1,2, Samantha Romero-Rodríguez1, Jorge M. Vázquez-Ramos1,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 307-330, 2021, DOI:10.32604/phyton.2021.014967
    Abstract The E2F/DP pathway is a widely conserved regulatory mechanism in pluricellular organisms. The family of E2F and DP transcription factors was originally described having a role in the transition from the G1 to the S phase of the cell cycle. However, the discovery of hundreds of possible gene targets and their involvement in many other biochemical processes, soon showed that they participated in cell development and differentiation, chromatin remodeling, DNA repair and others. The E2F/DP transcription factors can act as either activators or repressors of transcription depending on their association to other regulatory proteins, particularly the retinoblastoma protein, or even… More >

  • Open Access

    REVIEW

    Applications of Decision Support System: A Case Study of Solanaceous Vegetables

    Muhammad Saqib, Muhammad Akbar Anjum*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 331-352, 2021, DOI:10.32604/phyton.2021.011685
    Abstract Crop simulation models constitute the major proportion in decision support systems. A large number of crop models have been developed for potato and few for tomato and peppers. In the literature, thirty three crop models have been reported to simulate potato, nine for tomato and six for peppers. Some of these models dealt with the climate change scenario and others with the crop management practices such as sowing time, irrigation, nitrogen, and insect-pests management. The most evaluated and applied models for potato include; SUBSTOR, and LINTUL-Potato, whereas CROPGRO-tomato model is the most tested and applied for tomato. The AQUACROP is… More >

  • Open Access

    ARTICLE

    Potassium-Induced Regulation of Cellular Antioxidant Defense and Improvement of Physiological Processes in Wheat under Water Deficit Condition

    Abdul Awal Chowdhury Masud1, Md. Fazlul Karim1, M. H. M. Borhannuddin Bhuyan2, Jubayer Al Mahmud3, Kamrun Nahar4, Masayuki Fujita5, Mirza Hasanuzzaman1,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 353-372, 2021, DOI:10.32604/phyton.2021.013259
    (This article belongs to this Special Issue: Plant Physiology for Crop Production and Sustainable Agriculture)
    Abstract Drought is the most common form of abiotic stress that reduces plant growth and productivity. It causes plant injuries through elevated production of reactive oxygen species (ROS). Potassium (K) is a vital plant nutrient that notably ameliorates the detrimental effect of drought stress in the plant. A pot experiment was conducted at the Laboratory of Plant Stress Responses, Faculty of Agriculture, Kagawa University, Japan, under controlled environment of green house to explore the role of K in mitigating drought severity in wheat (Triticum asevitum L.) seedlings. Three days after germination, seedlings were exposed to three water regimes viz., 100, 50,… More >

  • Open Access

    ARTICLE

    Exogenous Selenium Mitigates Salt Stress in Soybean by Improving Growth, Physiology, Glutathione Homeostasis and Antioxidant Defense

    Hesham F. Alharby1, Mirza Hasanuzzaman2,*, Hassan S. Al-Zahrani1, Khalid Rehman Hakeem1
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 373-388, 2021, DOI:10.32604/phyton.2021.013657
    (This article belongs to this Special Issue: Plant Physiology for Crop Production and Sustainable Agriculture)
    Abstract The mechanism of selenium (Se)-induced salt tolerance was studied in moderately sensitive soybean (Glycine max L.) plants. To execute this view, soybean plants were imposed with salt stress (EC 6 dS m−1 ) applying NaCl. In other treatments, Se (0, 25, 50 and 75 µM Na2SeO4) was sprayed as co-application with that level of salt stress. Plant height, stem diameter, leaf area, SPAD value decreased noticeably under salt stress. Altered proline (Pro) level, together with decreased leaf relative water content (RWC) was observed in salt-affected plants. Salt stress resulted in brutal oxidative damage and increased the content of H2O2, MDA… More >

  • Open Access

    ARTICLE

    The Potassium Transporter AtKUP12 Enhances Tolerance to Salt Stress through the Maintenance of the K+/Na+ Ratio in Arabidopsis

    Hua Zhang#, Zhongmin Yang#, Xilong You, Youqiang Heng, Yan Wang*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 389-402, 2021, DOI:10.32604/phyton.2021.014156
    (This article belongs to this Special Issue: Plant Physiology for Crop Production and Sustainable Agriculture)
    Abstract Potassium (K+) is a necessary nutrient for plant growth and crop production. The K+ transporter plays crucial roles in the absorption and transport of K+ in plants. Most K+ transporters in Arabidopsis have been reported, but AtKUP12, which is a member of the KT/KUP/HAK family, has not yet been the subject of relevant in-depth research. In the present study, we demonstrated that AtKUP12 plays a crucial role in K+ uptake in Arabidopsis under 100 μM lowK+ and 125 mM salt stress conditions. AtKUP12 transcripts were induced by K+ deficiency and salt stress. We analyzed the K+ uptake of AtKUP12 using… More >

  • Open Access

    ARTICLE

    Alleviation of Cadmium Toxicity to Medicago Truncatula by AMF Involves the Changes of Cd Speciation in Rhizosphere Soil and Subcellular Distribution

    Yuying Jiang1,#, Renhua Huang1,#, Lei Jiang1, Ke Chen1,*, Wenkun Zhu2,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 403-415, 2021, DOI:10.32604/phyton.2021.014376
    (This article belongs to this Special Issue: Plant Physiology for Crop Production and Sustainable Agriculture)
    Abstract Arbuscular mycorrhizal fungi (AMF) can improve plant tolerance to several abiotic stresses, including heavy metals, drought or salinity exposure. However, the role of AMF in alleviation of soil cadmium (Cd)-induced toxicity to plants is still largely unknown. In this study, Cd speciation in soil and subcellular distribution of Cd were used to characterize the roles of application AM fungi in the alleviation of Cd toxicity in alfalfa plants. Our results showed that the addition of Glomus mosseae in Cd contaminated soil (10 mg/Kg) significantly increased soil pH, cation exchange capacity (CEC) and organic matter in rhizosphere soil with Medicago truncatulaMore >

  • Open Access

    ARTICLE

    Adjusting Nitrogen Application in Accordance with Soil Water Availability Enhances Yield and Water Use by Regulating Physiological Traits of Maize under Drip Fertigation

    Mingda Yang1, Shouchen Ma2, Fujian Mei1, Li Wei1, Tongchao Wang1,*, Xiaokang Guan1,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 417-435, 2021, DOI:10.32604/phyton.2021.013175
    (This article belongs to this Special Issue: Plant Physiology for Crop Production and Sustainable Agriculture)
    Abstract Knowledge of the interactive effects of water and nitrogen (N) on physio-chemical traits of maize (Zea mays L.) helps to optimize water and N management and improve productivity. A split-plot experiment was conducted with three soil water conditions (severe drought, moderate drought, and fully water supply referring to 45%–55%, 65%–75%, and 85%–95% field capacity, respectively) and four N application rates (N0, N150, N240, and N330 referring to 0, 150, 240, 330 kg N ha–1 respectively) under drip fertigation in 2014 and 2015 in the Huang-Huai-Hai Plain of China. The results indicated that drought stress inhibited physiological activity of plants (leaf… More >

  • Open Access

    ARTICLE

    Effects of Exogenous α-Ketoglutaric Acid on 2-Acetyl-1-Pyrroline, Yield Formation and Grain Quality Characters of Aromatic Rice

    Bin Du1, Qixia Wu1, Shuochen Jiang1, Dingyue Zhang1, Yue Qiao1, Yimei Xie2, Jianlong Xu3,*, Jianqiang Zhu1,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 437-447, 2021, DOI:10.32604/phyton.2021.012903
    (This article belongs to this Special Issue: Plant Physiology for Crop Production and Sustainable Agriculture)
    Abstract The improvement of grain quality in aromatic rice is very important for farmer to increase their income. Present study was conducted with a two-year field experiment and three aromatic rice cultivars in order to study the effects of exogenous α-ketoglutaric acid on yield formation, grain quality characters and the biosynthesis of 2-acetyl-1-pyrroline (2-AP, key component of aromatic rice’s fragrance) in aromatic rice. At heading stage, 0.50 mmol L–1 (T1) and 1.00 mmol L–1 (T2) α-ketoglutaric acid solutions were overhead sprinkle to aromatic rice plants, respectively while the treatment which was overhead sprinkled with distilled water was set as control (CK).… More >

  • Open Access

    ARTICLE

    Character Identification of an Early Flowering Mutant

    Zhenzhong Jiang1, Peng Jiao1, Zhuo Qi1, He Zhao2, Jing Qu2, Siyan Liu1, Dan Yao1, Piwu Wang2, Shuyan Guan1,*, Yiyong Ma2,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 449-459, 2021, DOI:10.32604/phyton.2021.013247
    (This article belongs to this Special Issue: Plant Physiology for Crop Production and Sustainable Agriculture)
    Abstract The concept of gene-function-genetic trait was introduced to explore the effects of early flowering on the growth and development of maize at the jointing stage and to obtain early flowering mutants using ethyl methanesulfonate mutagenesis. First, we studied gene expression, phytohormones, and lignin content to explore the physiological peculiarities of the early flowering mutant. Then we analyzed the genetic features of the mutants during the jointing stage by measuring physiological and biochemical indices of drought tolerance. The results showed that the photosynthetic rate of the mutant was significantly higher than that of the control and the rate of accumulation of… More >

  • Open Access

    ARTICLE

    Polysaccharide Elicitor from the Endophyte Bionectria sp. Fat6 Improves Growth of Tartary Buckwheat under Drought Stress

    Dabing Xiang1, Wei Wei1, Yan Wan1, Xiaoyong Wu1, Xueling Ye1, Lianxin Peng1, Linyun Zhong2, Qi Wu1, Liang Zou1, Gang Zhao1,*, Jianglin Zhao1,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 461-473, 2021, DOI:10.32604/phyton.2021.011724
    Abstract Drought can limit the growth and reduce the yield of crops, but the safe and effective bio-approach to improve the drought resistance of crops is very little. We conducted an experiment in which we monitored the effects of polysaccharide from the endophyte Bionectria sp. Fat6 on the growth of Tartary buckwheat (Fagopyrum tataricum (L.) Gaertn) seedlings under control and drought-stressed conditions by determining gas exchange, photosynthesis parameters, photosynthetic pigment contents, and metabolite accumulation. Results indicated that the polysaccharide from endophyte stimulated plant growth and increased the aboveground biomass, root mass, and root/shoot ratio of Tartary buckwheat. Application of the polysaccharide… More >

  • Open Access

    ARTICLE

    Doubled Haploid Production Using an Improved Anther Culture Protocol for Sorghum [Sorghum bicolor (L.) Moench]

    Paul Chege1,2, Erzsébet Kiss2, Csaba Lantos1, Andrea Palágyi1, János Pauk1,2,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 475-487, 2021, DOI:10.32604/phyton.2021.013557
    Abstract Sorghum [Sorghum bicolor (L.) Moench] can benefit from accelerated breeding and release of improved varieties through doubled haploid technology. The technology has been used in speeding up the breeding of other major cereals such as wheat, maize and rice, for which generally widely applied optimised protocols exist. A reproducible protocol for the crop, that can overcome genotype dependency and other species-specific challenges such as phenolic exudation is however lacking. This study aimed at sorghum doubled haploids production thereby contributing to the development of an improved protocol. From the 28 hybrid genotypes, both F1 registered- and experimental hybrids involved, this study… More >

  • Open Access

    ARTICLE

    Ameliorative Role of Pre-Sowing Proline Treatment in Coriandrum sativum L. Seedlings under Mercury Toxicity

    Dhriti Kapoor1, Kapani Kavani1, Amandeep Rattan2, Marco Landi3,*, Anket Sharma4,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 489-501, 2021, DOI:10.32604/phyton.2021.012359
    Abstract Heavy metal toxicity is one of the major ecosystem concerns globally in present time and is also responsible for significant threat to agronomic crops. The current work was conducted to investigate the possible ameliorative role of proline in Coriandrum sativum L. seedlings treated with mercury (Hg). The seedlings were exposed to different concentrations of Hg (0, 0.1, 0.3 and 0.5 mM) for 20 days. The effects of pre-sowing treatment with proline were studied on C. sativum seedlings in terms of pigment (chlorophylls, carotenoids and anthocyanins), malondialdehyde (MDA), antioxidant compound (glutathione, total phenolic compounds, ascorbic acid) and osmolytes (proline, glycine betaine).… More >

  • Open Access

    ARTICLE

    Foliar Application of Phosphorus Enhances Photosynthesis and Biochemical Characteristics of Maize under Drought Stress

    Zahoor Ahmad1,2,*, Ejaz Ahmad Waraich3, Muhammad Zia ur Rehman4, Muhammad Ashar Ayub4, Muhammad Usman4, Hesham Alharby5, Atif Bamagoos5, Celaleddin Barutçular1, Muhammad Ali Raza6, Fatih Çiğ7, Ayman El Sabagh7,8,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 503-514, 2021, DOI:10.32604/phyton.2021.013588
    Abstract Water is essential for the growth period of crops; however, water unavailability badly affects the growth and physiological attributes of crops, which considerably reduced the yield and yield components in crops. Therefore, a pot experiment was conducted to investigate the effect of foliar phosphorus (P) on morphological, gas exchange, biochemical traits, and phosphorus use efficiency (PUE) of maize (Zea mays L.) hybrids grown under normal as well as water deficit situations at the Department of Agronomy, University of Agriculture Faisalabad, Pakistan in 2014. Two different treatments (control and P @ 8 kg ha−1 ) and four hybrids (Hycorn, 31P41, 65625,… More >

  • Open Access

    ARTICLE

    Benzyl Amino Purine and Gibberellic Acid Coupled to Nitrogen-Limited Stress Induce Fatty Acids, Biomass Accumulation, and Gene Expression in Scenedesmus Obliquus

    Hans Christian Correa-Aguado1,3, Gloria Viviana Cerrillo-Rojas1, Alejandro Rocha-Uribe2, Ruth Elena Soria-Guerra2, José Francisco Morales-Domínguez1,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 515-531, 2021, DOI:10.32604/phyton.2021.013619
    Abstract The need for renewable energy sources makes microalgae an essential feedstock for biofuels production. The molecular aspects and the response to nitrogen (N)-limited conditions with a phytohormone stimulus in microalgae have been slightly explored. In this work, Scenedesmus obliquus was used as a study model to analyze the effect of benzyl amino purine (BAP) and gibberellic acid (GA) coupled to nitrogen limitation on cell growth, biomass and fatty acids. The selected 10-5 M BAP increased the biomass by 1.44-fold, and 10-6 M GA by 1.35-fold. The total lipids also increased by 2.8 and 1.11-fold, respectively. The 10-5 M BAP and… More >

  • Open Access

    ARTICLE

    Evaluation of Ocimum basilicum L. with Different Concentrations of K+ as an Inhibitor of Pathogenic Bacterial Strains

    Mercedes Georgina Ramírez-Aragón1, Victoria Jared Borroel-García1, Ramón Valenzuela-Soto1, Ricardo David Valdez-Cepeda2, Francisco Javier Wong-Corral3, José Luis García-Hernández4,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 533-541, 2021, DOI:10.32604/phyton.2021.013166
    (This article belongs to this Special Issue: Plant Secondary Metabolites: Recent Advances and Opportunities)
    Abstract The extraction of bioactive compounds has become one of the most interesting areas of modern chemistry. For therapeutic reasons, it´s important to obtain antimicrobial agents from natural origin. The objective of the present study was to determine the inhibitory effect of ethanolic extract of basil (Ocimum basilicum L. var. Red Rubin) subjected to different concentrations of potassium (K+) on the activity of three bacterial strains that are pathogens in humans. Susceptibility was evaluated by inhibition surface and these results were compared to two antibiotics: Gentamicin (GE) and Ciprofloxacin (CPF) for their efficacy against each bacterial strain. Analyzed variables presented significant… More >

  • Open Access

    ARTICLE

    Establishment of Rhodiola quadrifida Hairy Roots and Callus Culture to Produce Bioactive Compounds

    Anna Stepanova1,*, Maria Malunova1, Svetlana Salamaikina1, Renat Selimov2, Aleksandra Solov’eva1
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 543-552, 2021, DOI:10.32604/phyton.2021.013223
    (This article belongs to this Special Issue: Plant Secondary Metabolites: Recent Advances and Opportunities)
    Abstract Rhodiola quadrifida is a rare mountain medicinal plant whose root extracts are used in traditional Chinese medicine as a hemostatic, antitussive, and tonic in the treatment of gynecological diseases. The aim of the study was to obtain R. quadrifida cultures at different degrees of differentiation in vitro and compare their growth characteristics and the content of salidroside and rosavin. Hairy roots were obtained by incubating cotyledons and hypocotyls in a suspension of Agrobacterium rhizogenes strain A4. The presence of the rolB and rolC genes was proven by polymerase chain reaction. The obtained roots were cultivated in Murashige-Skoog medium (MS). Calluses… More >

  • Open Access

    ARTICLE

    Anthocyanin Profiles in Grape Berry Skins of Different Species of Wine Grapes in Shanxi, China

    Wei Tan1, Mingxiu Xu1, Siqi Xie1, Yan Zhang1, Shuai Wu1, Qinyan Zou1, Qifeng Zhao2, Qingliang Li3,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 553-570, 2021, DOI:10.32604/phyton.2021.014082
    (This article belongs to this Special Issue: Plant Secondary Metabolites: Recent Advances and Opportunities)
    Abstract To understand the anthocyanin characteristics of wine grape varieties, the anthocyanin composition and content of 31 wine grape varieties were analyzed to explore the use of anthocyanins as chemical fingerprints to distinguish varieties. Results showed that a total of 21 anthocyanins were detected in the skins, including cyanidin, delphinidin, petunidin, peonidin and malvidin 3-monoglucosides (or 3,5-diglucosides) along with the corresponding acetyl and p-coumaroyl derivatives. The highest and lowest total amount of anthocyanins were detected in ‘Ruby Cabernet’ and ‘Muscat Rouge’, respectively. In the 21 Vitis vinifera grapes, there were 3~11 monoglucoside anthocyanins detected, however, there were 4 to 9 monoglucoside… More >

  • Open Access

    ARTICLE

    Efficient Evergreen Plant Regeneration of Cinnamomum japonicum Sieb. through in vitro Organogenesis

    Jiaji Zhang1, Xiaofei Long1, Yuhao Weng1, Tielong Cheng2, Jisen Shi1, Jinhui Chen1,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 571-582, 2021, DOI:10.32604/phyton.2021.014191
    (This article belongs to this Special Issue: Tree Somatic Embryogenesis and Application)
    Abstract Cinnamomum japonicum Sieb. is an excellent roadside tree and medicinal tree species with considerable ornamental and economic value. In this study, we successfully developed a large-scale micropropagation protocol for C. japonicum for the first time. Sterilized shoots were excised and used as explants for shoot induction on several basal media, supplemented with different concentrations of plant growth regulators (PGRs), such as Thidiazuron (TDZ), N6 -Benzyladenine (6-benzylaminopurine) (BA), α-naphthaleneacetic acid (NAA) and Gibberellic acid (GA3). After comparison, the most efficient medium for shoot regeneration was 1/2 Murashige and Skoog (MS) medium containing 0.5 mg L–1 BA, 0.05 mg L–1 NAA and… More >

  • Open Access

    ARTICLE

    Optimization of Factors Influencing Adventitious Rooting in Hybrid Larch

    Kuipeng Li1,2, Hua Han1, Yunhui Xie1, Xiaomei Sun1,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 583-593, 2021, DOI:10.32604/phyton.2021.013912
    (This article belongs to this Special Issue: Tree Somatic Embryogenesis and Application)
    Abstract Optimization of in vitro adventitious root induction contributes to the development of a large-scale production system of hybrid clone seedlings of larch (Larix spp.). We used orthogonal testing to investigate the factors that affect the rooting of hybrid larch shoots–activated carbon, vitamin B1, sucrose, glycine, glutamic acid (Glu), cysteine, pH, and induction time in the dark and indole-3-butyric acid (IBA). Variance analysis showed that the effects of sucrose concentration on rooting rate, survival rate, and average root number, pH on the average number of roots; and Glu on survival rate were all significant (p < 0.05) when compared to the… More >

  • Open Access

    ARTICLE

    An Efficient Plant Regeneration System of Hydrangea bretschneideri Dipp via Stem Segments as Explants

    Si ran Wang#, Jia Yan#, Bu er Ha, Yu’e Bai*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 595-604, 2021, DOI:10.32604/phyton.2021.013693
    (This article belongs to this Special Issue: Tree Somatic Embryogenesis and Application)
    Abstract Hydrangea bretschneideri Dipp is a highly popular ornamental plant for garden decoration. Genetic engineering technology has been successfully used in many plant species, but it is limited in Hydrangea. Here we established an efficient regeneration system by using stem segments as explants for the first time. In our study, the plant growth regulators (PGRs) were evaluated at the different regeneration processes, including axillary shoots regeneration and root induction. We found that the optimal concentration for axillary buds’ induction was 2.0 mgL−1 6-BA and 0.5 mgL−1 1 IAA, its highest induction rate was 70%. Moreover, the highest axillary shoots proliferation coefficient… More >

  • Open Access

    ARTICLE

    Interaction of Acaena elongata L. with Arbuscular Mycorrhizal Fungi under Phosphorus Limitation Conditions in a Temperate Forest

    Yasmin Vázquez-Santos1, Yuriana Martínez-Orea1, Javier Álvarez-Sánchez1, Noé Manuel Montaño2, Sara Lucía Camargo-Ricalde2, Silvia Castillo-Argüero1,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 605-619, 2021, DOI:10.32604/phyton.2021.014208
    (This article belongs to this Special Issue: Mycorrhizal Fungi and Sustainable Development of Agriculture)
    Abstract The aim of this study was to analyze the performance of Acaena elongata colonized by arbuscular mycorrhizal fungi (AMF) to different phosphorus (P) concentrations, as a measure of AMF dependency. A. elongata, is a species from soils where P availability is limited, such as temperate forests. Our research questions were: 1) How do different P concentrations affect the AMF association in Acaena elongata, and 2) How does the AMF association influence A. elongata’s growth under different P concentrations? A. elongata’s growth, P content in plant tissue, AMF colonization and dependency were measured under four P concentrations: control (0 g P… More >

  • Open Access

    ARTICLE

    Detection and Discrimination of Tea Plant Stresses Based on Hyperspectral Imaging Technique at a Canopy Level

    Lihan Cui1, Lijie Yan1, Xiaohu Zhao1, Lin Yuan2, Jing Jin3, Jingcheng Zhang1,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 621-634, 2021, DOI:10.32604/phyton.2021.015511
    Abstract Tea plant stresses threaten the quality of tea seriously. The technology corresponding to the fast detection and differentiation of stresses is of great significance for plant protection in tea plantation. In recent years, hyperspectral imaging technology has shown great potential in detecting and differentiating plant diseases, pests and some other stresses at the leaf level. However, the lack of studies at canopy level hampers the detection of tea plant stresses at a larger scale. In this study, based on the canopy-level hyperspectral imaging data, the methods for identifying and differentiating the three commonly occurred tea stresses (i.e., the tea leafhopper,… More >

  • Open Access

    ARTICLE

    Degree of Humification in Fresh Litter from a Subtropical Mixed Plantation Forest in Southwest China

    Fujia Wu1, Chengming You2, Jie Du3, Xiangjun Pei4,*, Ningfei Lei4, Bo Tan2, Huixing Song1,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 635-650, 2021, DOI:10.32604/phyton.2021.014298
    Abstract The humification degree of fresh litter directly controls the accumulation of soil humus derived from plant litter, but very little information on this process is available. Planted forests are well known to restrict soil fertility, which is often indicated by the soil humus level. In this study, fresh litter was collected during different plant phenological stages during 2016 and 2017 in a mixed plantation in Southwest China. The values of hue coefficient ΔlogK (absorbance ratio of 400 nm and 600 nm on a logarithmic scale), optical density E4/E6 (absorbance ratio of 400 nm and 600 nm) and A600/C (absorbance at… More >

  • Open Access

    ARTICLE

    Poultry Manure as an Organic Fertilizer with or without Biochar Amendment: Influence on Growth and Heavy Metal Accumulation in Lettuce and Spinach and Soil Nutrients

    Hira Javaid Siddiqui1, Shamim Gul1,2,*, Attiq-ur-Rehman Kakar3, Umbreen Shaheen4, Gul Bano Rehman1, Naqeebullah Khan3, Samiullah3
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 651-676, 2021, DOI:10.32604/phyton.2021.011413
    Abstract This pot-based study investigated the influence of poultry manure and 1:1 mixture of poultry manure + biochar (produced from farmyard manure [FYM] or wood), on the biomass production and concentration of heavy metals in leaves of lettuce and spinach. The concentration of mineral nitrogen (N) and soluble inorganic phosphorus (P) of soils cultivated with these vegetables was also investigated. The application of poultry manure or FYM biochar in soil as 10% (equivalent to 60 t ha–1 , an estimated 1726.8 kg ha–1 N in poultry manure and 1353.9 kg ha–1 N in FYM) and 15% amendment (equivalent to 90 t… More >

  • Open Access

    ARTICLE

    Natarajania thailandica sp. nov. (Stilbosporaceae, Diaporthales) from Thailand

    Monika C. Dayarathne1, Rashika S. Brahmanage2, Kevin D. Hyde2,3, Yong Wang1,*
    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 677-686, 2021, DOI:10.32604/phyton.2021.012897
    Abstract A fungus similar to the monotypic genus Natarajania, isolated from dead wood and collected in Thailand, is reported. Analysis of partial ribosomal LSU and a protein coding gene (RPB2) demonstrated that the new isolate belonged to Stilbosporaceae, Diaporthales and genetically different from N. indica. It is unique in producing synnematous conidiophores, smooth-walled conidiogenous cells and a flared collarette but lacks an elongated collar-canal which is distinct in the type species. Therefore, sequence data and morphological traits are used to introduce the new species, Natarajania thailandica. More >

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