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Effect of growth habit on grain yield and its component traits in horse gram [Macrotyloma uniflorum (Lam.) Verdc.]

Published online by Cambridge University Press:  29 August 2023

Basalapura Rangegowda Chandana Open the ORCID record for Basalapura Rangegowda Chandana [Opens in a new window] ,
Sampangi Ramesh Open the ORCID record for Sampangi Ramesh [Opens in a new window] ,
Rotti Kirankumar Open the ORCID record for Rotti Kirankumar [Opens in a new window] ,
Gonal Basanagouda Open the ORCID record for Gonal Basanagouda [Opens in a new window] ,
Gowdru Veerabhadrappa Ranjitha Open the ORCID record for Gowdru Veerabhadrappa Ranjitha [Opens in a new window]  and
Banakara Santhoshkumari Open the ORCID record for Banakara Santhoshkumari [Opens in a new window]
Basalapura Rangegowda Chandana*
Affiliation:
Department of Genetics and Plant Breeding, College of Agriculture, University of Agricultural Sciences, Bangalore, Karnataka, India
Sampangi Ramesh
Affiliation:
Department of Genetics and Plant Breeding, College of Agriculture, University of Agricultural Sciences, Bangalore, Karnataka, India
Rotti Kirankumar
Affiliation:
Department of Genetics and Plant Breeding, College of Agriculture, University of Agricultural Sciences, Bangalore, Karnataka, India
Gonal Basanagouda
Affiliation:
Department of Genetics and Plant Breeding, College of Agriculture, University of Agricultural Sciences, Bangalore, Karnataka, India
Gowdru Veerabhadrappa Ranjitha
Affiliation:
Department of Genetics and Plant Breeding, College of Agriculture, University of Agricultural Sciences, Bangalore, Karnataka, India
Banakara Santhoshkumari
Affiliation:
Department of Genetics and Plant Breeding, College of Agriculture, University of Agricultural Sciences, Bangalore, Karnataka, India
*
Corresponding author: Basalapura Rangegowda Chandana; Email: chandanargowda6@gmail.com
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Abstract

In common with other grain legumes, the growth habit in horse gram is one of the domestication-driven adaptive traits. Horse gram exhibits determinate and indeterminate types of growth habits. Determinate genotypes have non-overlapping vegetative and reproductive phases combined with a compact growth habit which enables farmers to produce horse gram in intercropping and multiple cropping systems, a common practice for sustainable agriculture production. Also, synchronous flowering, and pod development and maturity of determinate genotypes enable mechanical harvesting. Empirical studies have indicated a greater grain yield potential of indeterminate compared to determinate genotypes. However, we hypothesize that indeterminate and determinate genotypes do not differ for their grain yield potential if they are in isogenic genetic backgrounds. To test this hypothesis, we compared eight pairs of near isogenic (NI) indeterminate and determinate genotypes for their grain yield potential during two rainy seasons in one location and one rainy season in another location. The eight pairs of NI determinate and indeterminate genotypes differed significantly in each of the three test environments. Indeterminate genotypes produced a greater pod (harvestable) and grain (marketable) yields than their determinate counterparts only in a few genetic backgrounds. These results thus support our hypothesis that determinate genotypes are comparable to indeterminate ones, if not better than the latter.

Keywords

determinategrain yieldhorse gramindeterminate
Type
Short Communication
Information
Plant Genetic Resources , Volume 21 , Issue 3 , June 2023 , pp. 283 - 286
Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of National Institute of Agricultural Botany

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References

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