Castillo-Aguilar C de la C¹, JJ Zúñiga-Aguilar², AA Guzmán-Antonio², R Garruña³

Phyton-International Journal of Experimental Botany, Vol.86, pp. 199-204, 2017, DOI:10.32604/phyton.2017.86.199

Abstract The Habanero pepper (Capsicum chinense) is intensively cultivated in the Yucatan peninsula, México. Because of adverse environmental conditions, it required seeding in germination trays, from which six-week-old seedlings were transplanted to the soil. Adequate nursing and fertilization programmes were made to improve health and vigour before seedlings transplanting. During seed germination, we investigated the effects of inoculation with four plant growth-promoting rhizobacteria (PGPR) on growth, nutrient uptake and gas exchange of 8-week-old Capsicum chinense plants. Inoculation was made with Pseudomonas sp. -P61-, Pseudomonas sp. -A46-, Bacillus pumillus -R44-, and Paenibacillus polymyxa-BSP1.1-. The BSP1.1 strain produced the highest increase in… More >

Zhang J, YF Yang, HY Li, W Sun

Phyton-International Journal of Experimental Botany, Vol.86, pp. 163-170, 2017, DOI:10.32604/phyton.2017.86.163

Abstract Community succession is an orderly replacement process between dominant species of such community. The mutual opulations changes of two clonal plant species, Leymus chinensis and Kalimeris integrifolia, were analyzed during a process of restoration succession in a degraded meadow in Northeast China. It was based on the methods of space-for-time substitution and continuous sampling in different mixed ratios of community sections. The results showed that the two species populations adjusted the size of ramets to ensure a relatively stable number in the mixed community. The fluctuation and instability were more obvious in the K. integrifolia than in the L.… More >

Valle-Rodríguez CM¹, S Valdés-Rodríguez², NL Vasco-Méndez¹, C Garcidueñas-Piña¹, RE Soria-Guerra³, JF Morales-Domínguez¹

Phyton-International Journal of Experimental Botany, Vol.86, pp. 143-150, 2017, DOI:10.32604/phyton.2017.86.143

Abstract The natriuretic peptides (NP) are vertebrate hormones involved in the regulation of ion and water homeostasis in the cell. In plants, natriuretic peptides (PNP) have been identified by molecular and biochemical methods. It has been suggested that PNPs, have similar functions to the PN, since they mediate (1) ion transport through the cell, (2) the opening and closing of Na⁺ and K⁺ channels through the stimulation and synthesis of a second messenger such as cGMP, and (3) the aperture of stomata. In this study, a PNPs gene was partially identified by PCR in garlic (Allium sativum L.),… More >

Gil SP¹, ME Reyna¹, L Seisdedos¹, IP Argüello²

Phyton-International Journal of Experimental Botany, Vol.86, pp. 340-344, 2017, DOI:10.32604/phyton.2017.86.340

Abstract TThe goals of this study were (1) to determinate the cultural practice of Solidago chilensis native Asteraceae from Argentina which have to be used in low maintenance gardening and (2) to describe germination and seedlings of S. chilensis and its morphology type. Germination assay treatments (3 repetitions/50 fruits/year) were intact non-scarified and scarified fruits (achenies), collected in La Mesada, La Calera, Dpto. Colón (Córdoba, Argentina) between 2011-2014. Statistical tests were performed. 50 rhizome cuttings, obtained from mother plants selected in the field, were cultivated in same conditions of the field-substrate with or without rooting solution, and they More >

Peláez DV¹, HD Giorgetti², OA Montenegro², OR Elia³, GD Rodríguez², FR Blazquez³, RJ Andrioli³

Phyton-International Journal of Experimental Botany, Vol.86, pp. 325-331, 2017, DOI:10.32604/phyton.2017.86.325

Abstract The objective of this work was to study the effect of a controlled fire and/or roller-chopping on foliar cover and density of the most conspicuous woody and forage perennial grass species in the south of the Phytogeographical Province of the Monte, Argentina. All control treatments reduced the woody species mean percentage cover. This reduction persisted during the whole study period. Nevertheless, the woody species tended to recover their percentage cover towards the end of study. At the end of the study period, significant differences (P<0.05) were only detected between the control and controlled burn plus… More >

Abozeid A^1,2, Y Liu¹, J Liu¹, ZH Tang¹

Phyton-International Journal of Experimental Botany, Vol.86, pp. 306-317, 2017, DOI:10.32604/phyton.2017.86.306

Abstract The genus Vicia L. belongs to the tribe Vicieae of the Fabaceae family. The genus includes about 190 species, from which about 40 species have economic importance. Some of them are food crops, but more than a dozen are forage plants. In this study, leaves of Vicia species from China, USA and Argentina were examined using stereo-microscopy and light microscopy. We determined macro- and micro-morphological characteristics that could be of taxonomic use. Forty eight characteristics of each taxon were determined including petiole and tendril length; leaflets number, length, width, shape, apex, base; blade surface, trichome shape, More >

Peng M^1,2, FL Huang^1*, FJ Meng², BZ Hu^3*, XF Chen¹, R Luo⁴, N Li¹, RF Wang¹, Y Zhao¹, QW Zou¹, CT Wu¹, JL Dai⁵

Phyton-International Journal of Experimental Botany, Vol.86, pp. 296-305, 2017, DOI:10.32604/phyton.2017.86.296

Abstract Chinese herbaceous peony (Paeonia lactiflora Pall.) is a popular ornamental plant. However, little is known about its reproductive biology by histological analyses. Here, we used the paraffin wax method to study the reproductive biology of the Chinese herbaceous peony (Paeonia lactiflora ‘Dafugui’). The results showed that the flower bud of Chinese herbaceous peony was a mixed bud. The course of flower bud differentiation included some developmental morphology periods, such as bract, calyx, petal, stamen, and pistil. The anther wall development was related to a dicotyledonous type. Pollen was mainly 2-celled, only few of them were 3-celled. Moreover, More >

Díaz-Álvarez EA^1,2, AP Rojas-Cortés^1,2, E de la Barrera¹

Phyton-International Journal of Experimental Botany, Vol.86, pp. 278-281, 2017, DOI:10.32604/phyton.2017.86.278

Abstract The epiphytic bromeliad Tillandsia makoyana was studied to assess the contribution of the environmental factors, water, temperature, and light, to the expression of the Crassulacean acid metabolism. In particular, nocturnal titratable acidity accumulation and maximum leaf temperature were measured in response to watering and incident light. Plants that were watered and exposed to direct sunlight had the highest nocturnal accumulation of titratable acidity (25.52 ± 0.34 H⁺/m²), while those without irrigation and shaded showed a 59% reduction in their titratable acidity. Our results illustrated a rapid response of the photosynthetic activity to water availability in Tillandsia makoyana, a More >

edaghathoor S, F Sharifi, A Eslami

Phyton-International Journal of Experimental Botany, Vol.86, pp. 252-257, 2017, DOI:10.32604/phyton.2017.86.252

Abstract The tulip (Tulipa sp.) is an ornamental plant produced by bulbs. Wild tulips are native to several areas of Iran, especially the Alborz and Zagros mountains. Endemic Iranian tulips are the origin of some commercial cultivars of tulip, and mutagens are commonly used to produce new traits and varieties. In this trial, X-rays were applied at 60, 70 and 80 kV; sodium azide (SA) at doses of 0.01%, 0.02%, and 0.03%, and diethyl sulfate (DES) at doses of 0.1%, 0.2% and 0.4 on Kess Nelis and Jan Van Ness varieties of tulip. Morphophysiological traits of the More >

Jin G^1,2, XM Tang³, Y Niu⁴, XY Huang², T Chen², Q Huang², J Zhang², RY Zhou¹

Phyton-International Journal of Experimental Botany, Vol.86, pp. 137-142, 2017, DOI:10.32604/phyton.2017.86.137

Abstract In plants, the mitochondrial NADH dehydrogenase (complex I) is a large protein complex transferring electrons to ubiquinone. For the nine chondriogenes encoding complex I subunits (nad1, nad2, nad3, nad4, nad4L, nad5, nad6, nad7, and nad9), an efficient strategy for the cloning of complete coding sequences (CDSs) is important. Specific orthologous portions of untranslated regions (UTRs) were found based on multiple sequence alignments of chondriogene orthologues encoding complex I subunits in plant species. Based on the conservation of partial UTRs, a one-step PCR strategy was conceived for the cloning of CDSs of the nine chondriogene orthologues. Using… More >