نتایج جستجو برای: drought stress indices

تعداد نتایج: 536975  

Germination and seedling establishment are sensitive and important stages in the life cycle of plants that are affected by abiotic stresses, especially drought and salinity stresses. This study was conducted to investigate the effects of osmotic potential (due to sodium chloride and polyethylene glycol) on germination and biochemical indices of Salicornia sinus-persica Akhani spec. nov.Akhani s...

2008
Polyana K. Martins Berenice Q. Jordão Naoki Yamanaka José R.B. Farias Magda A. Beneventi Eliseu Binneck Renata Fuganti Renata Stolf Alexandre L. Nepomuceno

Drought cause serious yield losses in soybean (Glycine max), roots being the first plant organ to detect the water-stress signals triggering defense mechanisms. We used two drought induction systems to identify genes differentially expressed in the roots of the drought-tolerant soybean cultivar MG/BR46 (Conquista) and characterize their expression levels during water deficit. Soybean plants gro...

Journal: :journal of agricultural science and technology 2009
b. pasban eslam

water deficit is an important factor limiting crop production worldwide. drought stress can be managed by improving the availability of soil moisture conserved and selecting drought tolerant genotypes. several physiological indices including stomatal conductance (kl), relative water content (rwc), leaf temperature (tl) and crop temperature stability (cts) along with yield, its components and se...

ژورنال: علوم زراعی ایران 2020
Rezaizad, Abbas, Shirani Rad, Amir Hossein, Zareei Siahbidi, Asadollah,

Breeding and production of drought tolerant cultivars for arid and semi-arid area is very important. The present experiment was carried out to evaluate the effects of drought stress on seed yield and yield components of oilseed rape as well as identification of high yielding and drought stress tolerant genotypes. Eighteen new winter oilseed rape lines and commercial cultivars were evaluated und...

2009
SHAMIM AHMAD RASHID AHMAD MUHAMMAD YASIN ASHRAF M. ASHRAF EJAZ AHMAD WARAICH

Response of six sunflower hybrids/ breeding lines viz., G-101, SF-187, Hysun-33, Hysun-38, 64A-93 and S-278 to drought stress imposed at germination and seedling growth stages was investigated in a laboratory experiment (25±3C). Five water stress levels of zero (control), -0.35, -0.6, -1.33, and 1.62 MPa were developed using polyethyleneglycol-6000 (PEG-6000). Complete randomized design with th...

Extended Abstract Introduction: Nowadays, due to land use change and destruction of natural resources induced by human activities, attention to desertification has immensely become widespread. One of the most important species for biological rehabilitation of desert areas on a large scale is the hawthorn plant. Hawthorn is a plant belonging to the family Amaranthaceae, the two species of which...

2010
R. Chandra Babu

Drought is a major constraint affecting rice production, especially in rainfed areas across Asia, Africa and South America. Development of drought resistant varieties will considerably improve rainfed rice production. Rice breeding programs focusing on drought resistance by direct selection for yield under stress have made little progress to date. Incorporation of secondary traits contributing ...

Drought stress can play an important role in limiting crop productivity and disturbing different stages of plant growth especially at seed germination in arid and semiarid regions. Breeding for drought tolerance at germination stage can enhance the number of seedlings, resulting in a higher yield of grain in rapeseed. In this research 32 cultivars of rapeseed were evaluated for drought toleranc...

Journal: :Asian journal of advances in agricultural research 2023

Drought impacts on cotton cultivation and production are expected to worsen as a result of global warming water-deficit stress. tolerance indices PCA analysis were used evaluate drought stress responses in eleven genotypes fifteen indices' ability identify drought-tolerant under normal circumstances. Seed yield (Kentar feddan-1) was significantly affected by genotypes, years, their interaction ...

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