Volume : IV, Issue : VIII, August - 2015

Genetic Diversity for Yield and Its Components in Blackgram(Vigna mungo L.)

Geethanjali, Ch. Anuradha, Suman

Abstract :

Fifty two genotypes of blackgram were subjected to genetic divergence by using D2 statistic. The genotypes were grouped into ten clusters by D2 analysis. Cluster Iconsisted maximum accessions (24) followed by cluster II and III (8) and cluster IV with (6) and cluster V,VI,VII,VIII,IX and X consisted only 1 accession. The inter–cluster distances were greater than intracluster distances, revealing that considerable amount of genetic diversity existed among the accessions. Maximum intra cluster distance was observed in cluster IV (6.91), followed by cluster III (6.32), cluster II (6.28) and cluster I (5.42) indicating that some genetic divergence still existed among the genotypes. This could be made use of in the yield improvement through recombination eeding. Highest mean values exhibited plant height in cluster X (68.33) and No. of anches per plant, No.of clusters per plant in cluster V (17.00) and No. of pods per plant (30.33). No.of seeds per pod in cluster VI (8.00),100 seed weight in cluster X (5.43) and Days to full maturity recorded (54.67) and seed yield per plant in cluster III (68.94). The characters contributing maximum towards diversity among the accessions are Days to initial flowering (22.85%) followed by % disease incidence (21.64%), days to full maturity (19.23%), plant height (17.27%), 100 seed weight (5.58%).These characters combining with early maturity are the major traits causing genetic divergence among the accessions. It is assumed that maximum amount of heterosis will be manifested in cross combinations involving the parents belonging to most divergent clusters.

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Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

Geethanjali, Ch.Anuradha, suman Genetic Diversity for Yield and its Components in Blackgram(Vigna mungo L.) International Journal of Scientific Research, Vol : 4, Issue : 8 August 2015


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