ESTIMATION OF CORRELATION COEFFICIENT ANALYSIS FOR QUANTITATIVE TRAITS IN WHEAT (Triticum aestivum L.) UNDER TERMINAL HEAT TOLERANCE

S. KUMAR¹, VISHWANATH²*, P.C. YADAV³, S.K. Singh⁴, R.K. PATEL^5
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
⁴Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture & Technology, Kanpur, 208002, Uttar Pradesh, India
⁵Bundelkhand University, Jhansi, 284128, Uttar Pradesh, India
* Corresponding Author : vishwa8159@gmail.com

Received : 06-11-2022     Accepted : 27-11-2022     Published : 30-11-2022
Volume : 14     Issue : 11       Pages : 11897 - 11900
Int J Agr Sci 14.11 (2022):11897-11900

Keywords : Harvest index, Correlation Coefficients, Genotypic correlation, Phenotypic correlation
Academic Editor : Dr R. S. Umakanth, Rohlupuii, Dr Meera Kumari
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; Bundelkhand University, Jhansi, 284128, 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’s 2) were used for the study of combining ability for eighteen quantitative characters in Wheat. The significant associations were observed in 38 cases out of 45 possible correlations in F1 at phenotypic level and 38 cases at genotypic level, respectively. In F2 the similar results were observed in 29 cases at phenotypic and 28 cases at genotypic level. Most of there were common in both the generations. Similarly, the significant environmental associations in 8 cases of F’1s and 10 cases of F’2s, showed significant at positive or negative levels. Strong associations between grain yield per plant with biological yield per plant and harvest index was strong at phenotypic level in F1 generation were much appreciable whereas at genotypic level. In F2 population, the positive correlation between grain yield per plant with biological yield per plant and harvest index was strong at phenotypic level whereas at genotypic level was visible

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