Genetic diversity for yield and its component traits in pearlmillet [Pennisetum glaucum (L.) R. Br.]

    Athoni, B K and Boodi, I and Pattanashetti, S K and Guggari, A K (2016) Genetic diversity for yield and its component traits in pearlmillet [Pennisetum glaucum (L.) R. Br.]. International Journal of Science and Nature, 7 (4). pp. 795-798. ISSN 2229-6441

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    Abstract

    Pearlmillet is an important cereal crop of the semi arid-tropical region. As a result the crop productivity is challenged in most cultivable regions. In order to enhance the productivity in dry regions, breeders need access to diverse material in their breeding programmes. In the present study, an attempt was made to assess the genetic divergence among the 243 germplasm lines using Mahalanobis D² statistic. Based on the genetic distance (D2 value), the 243 genotypes were grouped into 16 different clusters indicating diverse nature of material studied. Cluster I was the largest with 129 genotypes followed by cluster III (49 genotypes) and cluster V (24 genotypes) while clusters II and VI, VII, VIII and X to XVI were solitary indicating the grouping of exotic collections in definite groups. Among the various characters, seed yield (27.45%), panicle girth (18.16 %), leaf length (12.20 %) contributed maximum towards the divergence. Cluster IX (9 genotypes) showed the maximum mean value for seed yield. The intra and inter cluster divergence among the genotypes were varying in magnitude. The intra-cluster distance was maximum in cluster IX followed by clusters IV and V. The widest inter cluster distance was noted between cluster V and XVI giving scope for hybridization programme for improvement of Pearl millet genotypes. The distance between clusters II and V was minimal indicating close relationship between those clusters.

    Item Type: Article
    Divisions: Research Program : Genetic Gains
    CRP: UNSPECIFIED
    Uncontrolled Keywords: Pearl millet, D2 technique, Genetic divergence, Cluster, Genetics
    Subjects: Mandate crops > Millets > Pearl Millet
    Others > Genetics and Genomics
    Depositing User: Mr Ramesh K
    Date Deposited: 10 Jan 2018 08:27
    Last Modified: 10 Jan 2018 10:47
    URI: http://oar.icrisat.org/id/eprint/10395
    Official URL:
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: UNSPECIFIED
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