Shaoyi Ruan^1,2,3,#, Haowen Luo^1,2,3,#, Xiaoyan Zeng^1,2,3,#, Runhao Wen^1,2,3, Feida Wu^1,2,3, Xiangru Tang^1,2.*

Phyton-International Journal of Experimental Botany, Vol., , DOI:10.32604/phyton.2021.015610

Abstract Vermicompost is an organic fertilizer contains multiple nutrient elements. However, the application of vermicompost in fragrant rice production is rarely reported. In order to study the effects of vermicompost application on fragrant rice (Oryza sativa L.) seedling performances, present study was conducted with two fragrant rice cultivars and four vermicompost rate treatments (0 (CK), 2.5 (Wo1), 5.0 (Wo2) and 10.0 (Wo3) g kg⁻¹ ). The results showed that vermicompost treatments significantly increased dry weight of fragrant rice seedling by 8.31–32.56% compared with CK. 21.10–59.13% higher net photosynthetic rates and 10.66–59.16% higher chlorophyll contents (chlorophyll a, chlorophyll b and total chlorophyll)… More >

Yasir Iftikhar^1,*, Mazhar Abbas², Mustansar Mubeen³, Muhammad Zafar-ul-Hye^4,*, Faheema Bakhtawar¹, Sonum Bashir¹, Ashara Sajid¹, Muhammad Asif Shabbir¹

Phyton-International Journal of Experimental Botany, Vol., , DOI:10.32604/phyton.2021.015508

Abstract Tristeza is a devastating viral disease in all the citrus growing countries throughout the world and has killed millions of citrus trees in severely affected orchards. The citrus species grafted on sour orange rootstock are affected by this disease. Predominantly, the sweet orange, grapefruit and lime trees grafted on sour orange exhibit severe symptoms like quick decline, vein clearing, pin holing, bark scaling and degeneration leading to variable symptoms. Symptomatic expression of Citrus tristeza virus (CTV) in different hosts has been attributed to virus isolates which are from severe to mild. Different serological and molecular assays have been deployed to… More >

Lin Zhang^1,2,*, Dong Xie¹, Zhong Bian¹, Yiting Zou¹, Han Zhou¹, Wenlu Cai¹, Hadi Yeilaghi¹, Xiaolei Fan^1,2, Changquan Zhang^1,2, Qiaoquan Liu^1,2,*

Phyton-International Journal of Experimental Botany, Vol., , DOI:10.32604/phyton.2021.015229

Abstract In recent years, some super hybrid rice varieties were bred with strong culms and large panicles, which are mainly contributed by the ipa1-2D locus. A gain-of-function allele of OsSPL14 is the ipa1-2D and it can greatly increase the panicle primary branch number. However, the key downstream genes mediating this trait variation are not fully explored. In this study, we developed high-quality near-isogenic lines (NILs) with a difference of only 30 kb chromosomal segment covering the ipa1-2D locus. Using the NILs, we explored the impact of ipa1-2D on five sequential stages of early inflorescence development, and found that the locus can… More >

Luis Alfonso Aguilar Pérez^1,*, Daniel Nieto Ángel^1,*, Moisés Roberto Vallejo Pérez², Daniel Leobardo Ochoa Martínez¹, David Espinosa Victoria³, Andrés Rebolledo Martinez⁴, Abel Rebouças São José⁵

Phyton-International Journal of Experimental Botany, Vol., , DOI:10.32604/phyton.2021.015109

Abstract The development and implementation of sustainable and environmentally friendly agricultural practices are indispensable as alternatives to pesticide use and to keep populations of soil-borne plant pathogens at levels that do not affect crop productivity. The present research evaluates the incidence of soil-borne phytopathogens on the pineapple variety MD-2, which was subjected to different treatments: Incorporation of Crotalaria juncea into the soil (organic amendment), application of dolomitic lime to soil (inorganic amendment), and the use of plastic mulch covering the soil. During the crop cycle (15 months), the following variables were evaluated: plant height (cm), fruit weight (kg·plant⁻¹ ), crop yield… More >

Dan Xiang^1,2, Yue Wu², Huan Li², Qing Liu², Zhenfeng Zhou², Qinghua Chen², Nan Zhang³, Liang Xu^1,2,*

Phyton-International Journal of Experimental Botany, Vol., , DOI:10.32604/phyton.2021.014232

Abstract Soil fungi are extremely important for maintaining soil health and plant production in agricultural systems. Currently, the effect of continuous cropping of sweet potato on soil fungal communities and physiochemical parameters has not been well documented. In the present study, four sweet potato fields consecutively monocultured for 1, 2, 3, and 4 years were selected to investigate the effect of monoculture on soil fungal communities through Illumina MiSeq sequencing. Continuous cropping of sweet potatoes dramatically altered the fungal community composition, whereas fungal diversity was almost unchanged. Ascomycota and Basidiomycota were the most abundant phyla in all soil samples, accounting for… More >

Suzana Vieira Rabêlo¹, Fernanda Granja da Silva Oliveira², Michele Miriam Calixto de Lira³, Livia Macedo Dutra³, Adilson Sartoratto⁴, Marta Cristina Teixeira Duarte⁴, Maria Claudia dos Santos Luciano⁵, Maria Francilene Souza Silva⁵, Cláudia do Ó Pessoa⁵, Manoel Odorico de Moraes Filho⁵, Emmanoel Vilaça Costa⁶, Jackson Roberto Guedes da Silva Almeida^1,3,*

Phyton-International Journal of Experimental Botany, Vol., , DOI:10.32604/phyton.2021.013305

Abstract This study aimed to identify the chemical composition of essential oil from fruits (EOAF) and the hexanic crude extract from aerial parts (At-Hex) of atemoya (Annona cherimola x Annona squamosa), a hybrid belonging to the Annonaceae family. Cytotoxic and antimicrobial activity was also evaluated. OEAF was obtained by hydrodistillation using a Clevenger apparatus, and their composition was analyzed by gas chromatography-mass spectrometry (GC-MS) analyses. Cytotoxicity was tested against human tumor cell lines HCT-116 (colon carcinoma), SF-295 (glioblastoma), OVCAR-8 (ovarian carcinoma) and HL60 (leukemia) using 3-(4,5-dimethyl-2-thiazolyl)-2,5- diphenyl-2H-tetrazolium bromide (MTT) assay, while antimicrobial activity was conducted by bioauthography method against eleven microorganisms… More >

R. Ariza-Flores¹, D. Trujillo-García², M. A. Otero-Sánchez², E. Canales Sosa², C. H. Avendaño-Arrazate^3,*, L. A. Gálvez-Marroquín⁴, P. Cadena Iñiguez⁵

Phyton-International Journal of Experimental Botany, Vol., , DOI:10.32604/phyton.2021.013227

Abstract The aim of this study was to evaluate some physiological aspects of papaya crops in semi conventional and organic production systems. The following factors assessed in this experiment were: 1. Production systems (organic and semi conventional); 2. Genotypes (Maradol and Maradona F1), and 3. Cover crop plants (Canavalia, vegetative cover and no cover). Twelve treatments were obtained -product of factors’ combination- and distributed under a threerepetition experimental design of subdivided parcels. The factors examined in this study, that changed the CO₂ assimilation rate, were production system and genotype. It was determined that the greatest gas exchange in papaya crops happened… More >

Chakib Mokhtari¹, Fouad Malek¹, Sami Halila², Mohamed Naceur Belgacem^3,*, Ramzi Khiari^3,4,5,*

Journal of Renewable Materials, Vol., , DOI:10.32604/jrm.2021.015475

Abstract Bio-based polyurethanes (PUs) have been occurred a large attention nowadays. It was found to be an alternative to the petrochemical based materials to the fact of their weak environmental influence, availability, good price and biodegradability. In addition, the nature shows several bio-derived compounds as raw materials for the synthesis of polyols, including the vegetable oils, polyphenol, terpene, and other bio-renewable sources. With the aim to develop a new family of biobased polyurethanes (PUs) via vegetable oils, the elaboration of new Jojoba-based PUs was performed by catalyst-free polycondensation reaction of a synthesized Jojoba diol with various diisocyanates such us toluene diisocyanate… More >

Qiong Liu, Jianzhuang Xiao^*, Amardeep Singh

Journal of Renewable Materials, Vol., , DOI:10.32604/jrm.2021.015326

Abstract The failure characteristics of recycled concrete containing brick aggregates are still indistinct, especially how the angular aggregates effect the crack propagation. Based on the concept of modeled concrete, the development of cracks in concrete containing the natural aggregate and brick aggregate under a compression loading was studied. The strain distribution was analyzed with the Digital Image Correlation (DIC). The modeled aggregates include circular and squared ones, and the squared modeled aggregates were placed in different orientations, including 0°, 22.5° and 45°. The results show that when the aggregate is placed at 45°, the upper and lower vertices of the aggregate… More >

Ruyuan Yang¹, Haitao Li^2,*, Assima Dauletbek^1,2, Mahmud Ashraf^2,4, Rodolfo Lorenzo³, Youfu Sun¹, Yuehong Wu¹

Journal of Renewable Materials, Vol., , DOI:10.32604/jrm.2021.015296

Abstract This paper presents an experimental investigation to identify suitable indices to assess durability of glulam when subjected to freeze-thaw cycles in an exposed enviroenment. In this study, two types of glulam specimens were tested for their performance when subjected to different levels of aging due to freezing and thawing. Effect of aging treatment on various parameters including thickness swelling rate, static bending strength, elastic modulus, shear strength, and peeling rate of adhesive layer were studied. Obtained results showed that freeze-thaw aging treatment did not affect the water-resistance of the specimens as measured by thickness swelling rate and had little effect… More >