ASSESSMENT OF GENETIC VARIABILITY, HERITABILITY AND GENETIC ADVANCE OF YIELD, AND ITS COMPONENTS IN WHEAT (Triticum aestivum L.) UNDER TERMINAL HEAT TOLERANCE

S. KUMAR¹, VISHWANATH²*, S.K. SINGH^3
1Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture & Technology, Kanpur, 208002, Uttar Pradesh, India
²Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture & Technology, Kanpur, 208002, Uttar Pradesh, India
³Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture & Technology, Kanpur, 208002, Uttar Pradesh, India
* Corresponding Author : vishwa8159@gmail.com

Received : 07-11-2022     Accepted : 28-11-2022     Published : 30-11-2022
Volume : 14     Issue : 11       Pages : 11914 - 11916
Int J Agr Sci 14.11 (2022):11914-11916

Keywords : Spikelets, Chlorophyll intensity, Flag leaf area, Plant height
Academic Editor : Dr S. Sheela Mary
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture & Technology, Kanpur, 208002, Uttar Pradesh, India and UGC-Rajiv Gandhi National Fellowship (RGNF) for research
Author Contribution : All authors equally contributed

The present was conducted at Crop Research Farm, Nawabganj, C. S. Azad University of Agriculture and Technology, Kanpur- 208 002. (U.P.) during Rabi, 2012-13. The experimental material comprised of 45 F’1s developed by crossing 10 lines viz., K-9533, K-9162, K9465, K8962, HUW-234, NW-2036, K-9423, K9351, KRL-210 and K-906 following half diallel fashion design. A total of 100 treatments 10 parents (45 F1’s and 45 F’s2) were used for the study for eighteen quantitative characters in Wheat. The medium or moderate heritability estimates (below 30 per cent) for specific leaf weight, leaf angle, canopy temperature depression, day to physiological maturity, plant height, spike length, number of spikelets per spike and 1000 grain weight in both the generation and moderate estimates were also recorded for number of productive tillers per plant and grain per spike in F1 and for chlorophyll fluorescence and biological yield per plant in F2 generation was also moderately estimated according to our findings. High genetic advance in percentage over mean was estimated for specific leaf weight, leaf angle, canopy temperature depression, and harvest index in both the generation and for productive tillers per plant and grain yield per plant in F2 generation. Moderate values were also observed for days to anthesis, chlorophyll intensity, flag leaf area, plant height, spike length, number of spikelets per spike, spike density, grain per plant, 100 grain weight and biological yield per plant in both the generation and for number of productive tillers per plant and grain yield per plant in F1 generation exhibited the similar performance

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