نتایج جستجو برای: oryza sativa
تعداد نتایج: 21693 فیلتر نتایج به سال:
The present study deals with the influence of Vermiwash on germination and growth of Cow pea Vigna ungiculata and Rice Oryza sativa grown for a period of 25 days. Vermicompost was prepared by using earthworm, Eudrilus eugeniae and by using cowdung and leaf litter in the ratio of 1: 1. Vermiwash was prepared from the vermibed. The physico – chemical and microbiological characteristics of the ver...
Abiotic stresses adversely affect cellular homeostasis, impairing overall growth and development of plants. These initial stress signals activate downstream signalling processes, which, subsequently, activate stress-responsive mechanisms to re-establish homeostasis. Dehydrins (DHNs) play an important role in combating dehydration stress. Rice (Oryza sativa L.), which is a paddy crop, is suscept...
background rice is common foodstuffs in iran. aflatoxin contamination of rice can be hazardous human health and causes economic problems. objectives determination of aflatoxin levels was investigated on the imported rice which is consumed as the main food in this area. materials and methods two hundred samples of imported rice consisting; yellow (100) and white (100) rice were selected randomly...
Oryza sativa, the common cultivated rice, is one of the most important crops for human consumption, but production is increasingly threatened by abiotic stresses. Although many efforts have resulted in breeding rice cultivars that are relatively tolerant to their local environments, climate changes and population increase are expected to soon call for new, fast generation of stress tolerant ric...
Rice husk and straw are by-products of rice cultivation and processing industry and can be used as an energy source. Proper understanding of the physical properties of rice residues is necessary for utilizing them in thermochemical conversion processes such as gasification and combustion. The physical properties (moisture content, particle size, bulk density and porosity) of rice husks and stra...
Cultivated rice (Oryza sativa) is an AA genome Oryza species that was most likely domesticated from wild populations of O. rufipogon in Asia. O. rufipogon and O. meridionalis are the only AA genome species found within Australia and occur as widespread populations across northern Australia. The chloroplast genome sequence of O. rufipogon from Asia and Australia and O. meridionalis and O. austra...
In the present study, four species of Bipolaris viz. B. salkadehensis, B. coicis, B. ellisii, and B. maydis and two species of Curvularia viz. C. tuberculata and C. comoriensis were isolated and identified from different poaceousspecies. Bipolaris coicis on Coix lacryma-jobi, B. ellisii on Zea mays, C. tuberculata on Oryza sativa, Sorghum bicolor, Cyperus rotundus and C. comoriensis on Oryza sa...
The African species of rice (Oryza glaberrima) was cultivated long before Europeans arrived in the continent. At present, O. glaberrima is being replaced by the introduced Asian species of rice, Oryza sativa. Some West African farmers, including the Jola of southern Senegal, still grow African rice for use in ritual contexts. The two species of rice have recently been crossed, producing a promi...
Plant breeders have long recognized the existence of useful genetic variation in the wild ancestors of our domesticated crop species. In cultivated rice (Oryza sativa), crosses between high-yielding elite cultivars and low-yielding wild accessions often give rise to superior offspring, with wild alleles conferring increased performance in the context of the elite cultivar genetic background. Be...
The objective of this study was to determine the effects of water regime/soil condition (continuous flooding, saturated, and aerobic), cultivar ('Cocodrie' and 'Rondo'), and soil texture (clay and sandy loam) on rice grain yield, yield components and water productivity using a greenhouse trial. Rice grain yield was significantly affected by soil texture and the interaction between water regime ...
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