Abstract
The variability among 44 accessions of Dolichos bean (Lablab purpureus L. Sweet) was assessed for seven quantitative traits, and bruchid and pod borer infestations. The experiment was conducted during the Kharif season 2012-2013 at the University of Agricultural Sciences (UAS), Bangalore, India with two check entries (HA 4 and HA 3) in an augmented design using three blocks. A substantial variability among the accessions for quantitative traits, and bruchid and pod borer infestations, except for the number of branches per plant, was documented. The estimates of heritability were high for all the traits studied. The phenotypic and genotypic coefficients of variation, which reflect the average inter-accession differences, were moderate. However, these are useful statistics to understand variability among the accessions. The germplasm was grouped into seven clusters following Wards minimum variance clustering approach with significant deviations among clusters. The intra-cluster distance was lower compared to inter-cluster distance. Some of the accessions were superior to the check HA-4. The results could be used to adopt suitable strategies for breeding Dolichos bean aiming at improved productivity.
Highlights
IntroductionSweet) (2n = 22), known as ‘hyacinth bean’ ‘field bean’ ‘Indian bean’, belongs to the family Fabaceae, sub family Faboidae, tribe Phaseoleae and sub-tribe Phaseolineae
The cultivated varieties are divided into two categories namely, (a) L. purpureus var. typicus, a short-lived perennial, usually treated as an annual, twining herb, pods are longer and often grown as a garden crop mainly for green pods, and (b) L. purpureus var. lignosus, a longer-lived, semi-erect, bushy perennial but, usually treated as annual
Experimental site and design The accessions along with two check entries were sown in an Augmented design (Federer, 1956) in two compact blocks during Kharif 2012-2013 at the experimental plots of the Zonal Agricultural Research Station (ZARS), University of Agricultural Sciences (UAS), Bangalore, India
Summary
Sweet) (2n = 22), known as ‘hyacinth bean’ ‘field bean’ ‘Indian bean’, belongs to the family Fabaceae, sub family Faboidae, tribe Phaseoleae and sub-tribe Phaseolineae. It is one of the most ancient crops known for its food and fodder value. Dolichos bean is native to India and presently grown throughout the tropical regions in Asia, Africa and America. The cultivated varieties are divided into two categories namely, (a) L. purpureus var. Typicus, a short-lived perennial, usually treated as an annual, twining herb, pods are longer and often grown as a garden crop mainly for green pods, and (b) L. purpureus var.
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