Vol. 7 (6) : November-December 2016 issue
Green Farming Vol. 7 (6) : 1296-1300 ; November-December, 2016
Genetic variability, correlation coefficient and path analysis of some quantitative traits in bread wheat
AKANKSHA TIWARI1*, D.K. MISHRA2, R.S. SHUKLA3 and PRATIBHA CHOUDHARY4
Dept. of Genetics & Plant Breeding J.N. Krishi Vishwavidyalaya, Adhartal - 482 004 Dist. Jabalpur (Madhya Pradesh)
Designation : 1,4Ph.D. Scholar *(twri.akanksha@gmail.com), 2,3University Prof. & Head
Subject : Crop Genetics and Plant Breeding
Paper No. : P-5173
Total Pages : 5
Received : 17 May 2016
Revised accepted : 17 October 2016
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Citation :
AKANKSHA TIWARI, D.K. MISHRA, R.S. SHUKLA and PRATIBHA CHOUDHARY. 2016. Genetic variability, correlation coefficient and path analysis of some quantitative traits in bread wheat. Green Farming Vol. 7 (6) : 1296-1300 ; November-December, 2016
ABSTRACT
A study was undertaken to estimate the genetic variability and correlation coefficient and path analysis of yield and yield contributing traits in 40 F1s generated by cross of ten genetically diverse promising genotypes with well adapted 4 testers of wheat cultivars grown in Randomized block design with three replications at Seed Breeding Farm, Deptt. of Genetics and Plant Breeding, JNKVV, Jabalpur, during rabi season 2014-15. The analysis of variance revealed that the treatments were highly significant for all the characters. The higher magnitudes of genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) were recorded for grain yield per plant, biological yield per plant, ear weight, tillers per plant, harvest index, grains per ear and 1000-grain weight respectively. The high heritability in broad sense was estimated for all the characters. High value of heritability indicates that it may be due to higher contribution of genotypic components. High heritability coupled with high genetic advance as percent of means were recorded for tillers per plant, ear weight, number of ears/plant, grains/ear, 1000-grain weight, biological yield per plant, grain yield per plant and harvest index. The correlation coefficients estimate showed high direct genotypic and phenotypic correlations for with all the traits studied except 1000-grain weight. Path analysis showed that biological yield had highest direct positive effect on grain yield followed by harvest index, 1000-grain weight, tillers per plant and ear weight, thereby indicated that these were main contributors to the grain yield.
Key words :
Bread wheat, Correlation coefficient, Genetic variability, Path analysis.