Canopy Temperature Depression and Stay Green: Major Components for Identifying Under Terminal Heat Stress Resistance Genotypes in Wheat

2018 ◽  
Vol 6 (3) ◽  
pp. 374-381 ◽  
Author(s):  
Krishna Kumar Jangid ◽  
Keyword(s):  
Heat Stress ◽  
Stress Resistance ◽  
Canopy Temperature ◽  
Stay Green ◽  
Canopy Temperature Depression ◽  
Terminal Heat Stress ◽  
Heat Stress Resistance ◽  
Temperature Depression

scholarly journals Assessment of genetic variability, heritability and genetics advance in wheat (Triticum aestivum L.) genotypes under normal and heat stress condition

2019 ◽  
Author(s):  
Ravi Singh Thapa ◽  
Pradeep Kumar Sharma ◽  
Anuj Kumar ◽  
Tejbir Singh ◽  
Dharmendra Pratap
Keyword(s):  
Heat Stress ◽  
Grain Yield ◽  
Canopy Temperature ◽  
Tiller Number ◽  
Grain Weight ◽  
Genetic Advance ◽  
Canopy Temperature Depression ◽  
Biological Yield ◽  
Stress Environment ◽  
Temperature Depression

One ninety diverse wheat genotypes were evaluated for genetic varaibilty, heritability and genetic advance under norrmal and heat stress environment at the Research Farm of Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut U. P. (India). The genotypes were grown in simple augmented block design and data were collected on fifteen morpho-agronomic characters. Analysis of observed data showed that the mean squares due to treatments for all the traits in both the environment were highly significant. GCV and PCV were highest for canopy temperature depression, grain weight/spike, biological yield/plant, grain yield/plant, tiller number./plant and lowest for days to anthesis. Heritability (bs) estimates were high for canopy temperature depression (CTD), followed by biological yield/plant, grain weight/ spike, grain number. /spike, 1000- grain weight, grain yield/plant, tiller number./plant and lowest for days to heading and days to anthesis in case of both environments. The estimates of genetic advance (GA) were highest for canopy temperature depression followed by grain weight/spike, biological yield/plant, grain yield/spike, tiller number./plant, grain number./spike and lowest for days to heading and days to anthesis under both ( numberrmal and heat stress) environment. This study suggests that the presence of adequate genetic variability, heritability and genetic advance for these traits under norrmal and heat stress environment is suitable for breeding programs and crop improvement.

scholarly journals Effects of post-anthesis heat stress on stem reserves mobilization, canopy temperature depression and floret sterility of wheat cultivars

2010 ◽  
Vol 39 (1) ◽  
pp. 51-55 ◽  
Author(s):  
S Sikder ◽  
NK Paul
Keyword(s):  
Heat Stress ◽  
Canopy Temperature ◽  
Stress Conditions ◽  
Grain Weight ◽  
Wheat Cultivars ◽  
Canopy Temperature Depression ◽  
Heat Tolerant ◽  
Growing Conditions ◽  
Stem Reserves ◽  
Temperature Depression

Testing of four heat tolerant (Gourab, Sourav, Kanchan and Shatabdi) and two heat sensitive (Sonora and Kalyansona) wheat cultivars under normal and late growing post-anthesis heat stress conditions revealed higher pre-anthesis stem reserves mobilization to the final grain weight and floret sterility in heat sensitive cultivars compared to heat tolerant cultivars. The heat tolerant cultivars showed higher canopy temperature depression than the heat sensitive cultivars in both the growing conditions indicating the higher ability of heat tolerant cultivars to maintain cooler canopy environment than the heat sensitive ones.Key words: Post-anthesis; Heat stress; Floret sterility; Canopy temperature; Mobilization DOI: 10.3329/bjb.v39i1.5526Bangladesh J. Bot. 39(1): 51-55, 2010 (June)

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