TAILIEUCHUNG - Development of suitable mitigation strategy to counter the adverse effect of heat stress in wheat varieties (Triticum aestivum L.)

Wheat is a major cereal crop of the world and one third of the world's population uses it as a staple food. However, with the changing climatic scenario and prevalence of higher temperatures, heat stress has become a major factor limiting productivity. Hence, the present study was conducted with the objective to develop suitable mitigation strategy to counter the adverse effect of heat stress. The field experiment was conducted during rabi2017-18 and rabi 2018-19 in the Division of Seed Science and Technology, ICAR - Indian Agricultural Research Institute (IARI), New Delhi, India. Seven representative varieties from different zones were used for the present study. The Laboratory studies were conducted in the Division of Seed Science and Technology and Division of Genetics, ICAR-IARI, New Delhi. Heat stress was found to have a significant influence on the seed quality parameters. Germination and vigour Index, I reduced significantly under late sown conditions. Similar trend was observed for VG II. Foliar sprays with different chemicals viz. alpha tocopherol (150ppm), ascorbic acid (10ppm) + citric acid (), KCl 1%, Brassinolides () and salicylic acid (200ppm) were carried out at vegetative (booting stage) and seed filling stage. Seed harvested from heat stressed environment showed a significant increase in morphological and seed quality parameters when sprayed with various foliar sprays. The result also shows that foliar spray of salicylic acid @ 200ppm and KCl 1% is effective in increasing various morphological parameter like number of seed per spike, thousand seed weight and seed quality parameter of seed. The seed germination and VG I and II were also showing increasing trends. | Development of suitable mitigation strategy to counter the adverse effect of heat stress in wheat varieties (Triticum aestivum L.)

• Sinh học
• Proline content
• Suitable mitigation strategy
• Counter the adverse effect
• Wheat varieties
• Triticum aestivum L
• PPFM spray on leaf relative water content
• Leaf proline
• Chlorophyll stability index
• Yield of cotton
• Moisture stress condition
• Abiotic stress
• Formative stage
• Grand growth stage
• Proline content of sugarcane
• Plant development
• Water stress
• Chlorophyll content
• Nitrate reductase activity
• Starch content
• Free amino acid content
• Salinity tolerance
• Nicotiana tabacum L
• Antioxidative enzymes
• Glutathione reductase
• Proline accumulation
• BMC Genetics
• Bulk segregant analysis
• Physiological traits
• Relative chlorophyll content
• Relative water content
• Stomatal frequency
• Genetic parameters
• Tomato (Solanum lycopersicum L
• Antioxidant enzyme
• Sodic condition
• Physiological responses of Mithipagal genotypes
• Drought stress
• Grain yield
• Root length
• Mineral composition
• Salinity stress
• Troyer citrange seedlings
• Seeds of Troyer citrange
• Carbohydrate level
• Endogenous proline concentration
• Nitric oxide
• Plant tissue culture
• Shoot proliferation
• Sree reshmi
• Water stress revealed physiological
• Biochemical variations
• Biochemical and physiological parameters
• Superoxide dismutase
• Nagina 22
• Pusa sugandh 5 (PS 5)
• Methyl jasmonate
• Stress in rice genotype
• Antioxidant enzymes to mitigate
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• Prolonged stress conditions
• Preserving nitrogen source
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• Total flavonoid