Journal article
Identification of heterotic groups in South-Asian-bred hybrid parents of pearl millet
Theoretical and Applied Genetics, Vol.133(3), pp.873-888
2020
Abstract
Five hundred and eighty hybrid parents, 320 R- and 260 B-lines, derived from 6 pearl millet breeding programs in India, genotyped following RAD-GBS (about 0.9 million SNPs) clustered into 12 R- and 7 B-line groups. With few exceptions, hybrid parents of all the breeding programs were found distributed across all the marker-based groups suggesting good diversity in these programs. Three hundred and twenty hybrids generated using 37 (22 R and 15 B) representative parents, evaluated for grain yield at four locations in India, showed significant differences in yield, heterosis, and combining ability. Across all the hybrids, mean mid- and better-parent heterosis for grain yield was 84.0% and 60.5%, respectively. Groups G12 B × G12 R and G10 B × G12 R had highest heterosis of about 10% over best check hybrid Pioneer 86M86. The parents involved in heterotic hybrids were mainly from the groups G4R, G10B, G12B, G12R, and G13B. Based on the heterotic performance and combining ability of groups, 2 B-line (HGB-1 and HGB-2) and 2 R-line (HGR-1 and HGR-2) heterotic groups were identified. Hybrids from HGB-1 × HGR-1 and HGB-2 × HGR-1 showed grain yield heterosis of 10.6 and 9.3%, respectively, over best hybrid check. Results indicated that parental groups can be formed first by molecular markers, which may not predict the best hybrid combination, but it can reveal a practical value of assigning existing and new hybrid pearl millet parental lines into heterotic groups to develop high-yielding hybrids from the different heterotic groups.
Details
- Title
- Identification of heterotic groups in South-Asian-bred hybrid parents of pearl millet
- Authors/Creators
- S.K. Gupta (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsK.S. Patil (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsA. Rathore (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsD.V. Yadav (Author/Creator) - Chaudhary Charan Singh Haryana Agricultural UniversityL.D. Sharma (Author/Creator) - Sri Karan Narendra Agriculture University, JobnerK.D. Mungra (Author/Creator) - Junagadh Agricultural UniversityH.T. Patil (Author/Creator) - Mahatma Phule Krishi VidyapeethS.K. Gupta (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsR. Kumar (Author/Creator) - Chaudhary Charan Singh Haryana Agricultural UniversityV. Chaudhary (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsR.R. Das (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsA. Kumar (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsV. Singh (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsR.K. Srivastava (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsR. Gupta (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsM. Boratkar (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsR.K. Varshney (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsK.N. Rai (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsO.P. Yadav (Author/Creator) - Central Arid Zone Research Institute
- Publication Details
- Theoretical and Applied Genetics, Vol.133(3), pp.873-888
- Publisher
- Springer Verlag
- Identifiers
- 991005541451307891
- Copyright
- © 2021 Springer Nature Switzerland AG.
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.4 Crop Science
- 3.4.96 QTL
- Web Of Science research areas
- Agronomy
- Genetics & Heredity
- Horticulture
- Plant Sciences
- ESI research areas
- Agricultural Sciences