Screening Wheat Genotypes for Drought Tolerance and Co-relation Study among Morpho-physiological Traits

Pokharel, Dipendra; Baral, Khagendra Raj; Ojha, Bishnu Raj; Ghimirey, S. K.; Pandey, Mata Prasad

doi:10.3126/aej.v14i0.19787

Cited by 5 publications

(4 citation statements)

References 12 publications

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“…This study is expected to be helpful in wheat breeding for drought tolerance in Nepal (Poudel et al, 2019). 60 different genotypes including landraces, advanced lines of NWRP, drought check international cultivars, advanced commercial cultivars derived from CIMMYT were experimented in a greenhouse which showed that NPGR 7504 landrace showed drought adaptive traits including high water use efficiency (WUE) and among the Nepalese cultivars Gautam showed the superior drought adaptive traits (Pokhrel et al, 2013). Vijay cultivar of Nepal has been characterized as drought sensitive while Gautam cultivar has been found to show various positive drought related traits in an experiment conducted within a greenhouse comprising of local landraces, advanced commercial CIMMYT derived cultivars and three international check cultivars (Pokharel and Pandey, 2012).…”

Section: Drought Stress Varietal Trails and Breeding In Nepalmentioning

confidence: 99%

Effect of Drought Stress on Wheat and Drought Breeding Status for It in Nepal With the Way Forward: A Review

Bhattarai¹,

Pokhrel²,

Poudel³

et al. 2022

Review.food.agr.

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Wheat is the third most important crop in Nepal that is grown in a dominant rice wheat cropping pattern. The productivity of wheat is at a standstill for the past decade primarily due to abiotic stress like drought and high temperature. Changing climate pattern and high vulnerability of Southeast Asian countries in the future demands extensive work under plant breeding to cope with the challenges. Wheat requires about 266.8-500mm of water for normal attainable yield, but prolonged drought has a serious effect on photosynthesis as it hampers the carbondioxide assimilation rate. It also has a pronounced effect in the reproductive and grain filling period of the wheat. This results in the reduction of yield, and this is expected to increase in the future because of climate change. Varieties like Gautam and Vijay have been reported to show positive drought adaptive traits. Vast resources of biodiversity and landraces have been underutilized in Nepal which can be useful when coupled with advanced biotechnological tools to produce drought adaptive crop.

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Section: Drought Stress Varietal Trails and Breeding In Nepalmentioning

confidence: 99%

Effect of Drought Stress on Wheat and Drought Breeding Status for It in Nepal With the Way Forward: A Review

Bhattarai¹,

Pokhrel²,

Poudel³

et al. 2022

Review.food.agr.

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“…According to a research conducted by (Ihsan et al, 2016) in four wheat genotypes concluded reduction in height of 54% to 66% and 77% to 88% under mild and severe drought stress respectively. Similarly, according to a genotype screening done by (Pokhrel et al, 2013) a height decrease in 60 genotypes during drought condition ranged from 10% to 53%.…”

Section: Morphological Effect Of Droughtmentioning

confidence: 99%

Effect of Drought Stress in Morphology, Phenology, Physiology and Yield of Wheat

Gyanwali¹,

Khanal²

2021

Plant. phy. Soil. Chem.

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The burning issue in the world as of now is global warming. Global warming has been a major threat to agriculture and food security. One of the threats caused by global warming is drought, which is responsible for reduced yield of crops and in some cases severely damage the crops to the point of no production and so it poses a big threat towards food security. By knowing in which system drought affects a plant can be used to develop resistant varieties accordingly. Knowing the effects of drought provides a parameter to judge a plant’s level of resistance towards drought. New drought tolerant varieties can be produced by making crosses between varieties which are less affected by drought and selecting among their progeny.

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“…However this number was determined to be 1.71 under stressed condition. Early water deficient condition with heat stress was found to damage the number of tillers which strongly reduced yield (Pokhrel et al, 2013).…”

Section: No Of Effective Plant Populationmentioning

confidence: 99%

Effects of Terminal Heat Stress and Their Responsive Mechanisms in Elite Wheat Genotypes: A Review

Paudel,

Bashyal,

Pandey

et al. 2021

Plant. phy. Soil. Chem.

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Wheat is the most important cereal crop in the world that ranks first position in terms of production and trade. In Nepal this is the third most cultivated crop after rice and maize. Various environmental constraints including heat stress have been determined to be a great factor to limit world wheat production. High temperature leaves a devastating impact in wheat production by affecting different stages including germination, plant growth, anthesis and grain filling etc. heat stress also affects photosynthesis process and responsible for the lower biomass yield. Various studies have shown that the reproductive stages of wheat plant are more susceptible to heat stress than vegetative stages. Heat stress hinders germination, reduce plant growth, decrease number of plant population per unit area and causes leaf senescence. Water relation disturbance and oxidative damage to plants are other harmful effects of heat stress in wheat plants. Plant also has tolerance mechanism against such heat induced stresses. Such mechanisms include avoidance against heat stress, production of heat shock protein and antioxidant mechanisms.

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Screening Wheat Genotypes for Drought Tolerance and Co-relation Study among Morpho-physiological Traits

Abstract: Wheat crop in developing world including

Cited by 5 publications

References 12 publications

Effect of Drought Stress on Wheat and Drought Breeding Status for It in Nepal With the Way Forward: A Review

Effect of Drought Stress on Wheat and Drought Breeding Status for It in Nepal With the Way Forward: A Review

Effect of Drought Stress in Morphology, Phenology, Physiology and Yield of Wheat

Effects of Terminal Heat Stress and Their Responsive Mechanisms in Elite Wheat Genotypes: A Review

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