Genetic divergence analysis and character association in different genotypes of wheat (Triticumaestivum L.)
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Date
2021-07-27
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ANDUAT, Kumarganj, Ayodhya
Abstract
The present investigation entitled “Genetic divergence analysis and character
association in different genotypes of wheat (Triticum aestivum L.)” conducted on 94
accessions of wheat during 2019-20 at Main Experiment Station (MES) of A.N.D. University of
Agriculture and Technology, Kumarganj, Ayodhya (U.P.) to evaluate genetic divergence and
character association for the identification of most diverse and promising genotypes. The
experiment was laid out in Augmented Block Design. The observations were recorded on various
morphological and physiological characters. The wide range of variation for different characters
and comparison of means of germplasm line indicating existence of very high degree of variability
for peduncle length, flag leaf area, biological yield plant-1, grain yield plant-1, 1000 – grain weight
and harvest Index which could be utilized for breeding for improvement in the indigenous lines
of wheat. Positive and significant correlation between tillers plant-1, spike length, biological yield
plant-1, 1000-grain weight and harvest index. Path analysis revealed that maximum positive direct
effect on grain yield plant-1 was exerted by the biological yield plant-1 followed by harvest index
and flag leaf area. Field experiment based non-hierarchical Euclidean clustering for eleven
physiological traits for 94 genotypes shows the maximum inter – cluster distance between cluster
IV and VII followed by cluster IV and VI and cluster II and VII. The maximum intra – cluster
distance was observed in cluster X followed by cluster IX and cluster V.
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