Identification of efficient inbred testers to strengthen established heterotic groups in pearl millet (Pennisetum glaucum [L.] R. Br)

Papanna, R and Gupta, S K (2024) Identification of efficient inbred testers to strengthen established heterotic groups in pearl millet (Pennisetum glaucum [L.] R. Br). Plant Breeding (TSI). pp. 1-18. ISSN 0179-9541

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Abstract

Pearl millet has two major heterotic groups, HGB (Heterotic Group B) and HGR (Heterotic Group R), each with unique genetic backgrounds and traits. Leveraging appropriate genetic resources is crucial for enhancing the potential of these heterotic groups in hybrid breeding programmes. Testers are essential in this context, determining the combining ability of new breeding lines and accurately assessing the performance and potential of parental lines in hybrid combinations. Two sets of test crosses were produced using line x tester mating design: Set 1 with six HGB testers crossed with new restorer lines and Set 2 with six HGR testers crossed with new seed parental lines, evaluated at multiple locations in India. Testers were evaluated for their effectiveness using multiple criteria, such as rank correlation analysis for line performance in hybrid combinations, discrimination ability, general combining ability, per se performance and Biplot analysis. These assessments determined their relative ranking, with HGB1-T3, HGB2-T3, HGR1-T1 and HGR2-T1 identified as efficient testers. The genetic analysis helps identify efficient testers for selecting superior genotypes, thereby enhancing heterotic group performance by incorporating appropriate new breeding material.

Item Type:	Article
Divisions:	Global Research Program - Accelerated Crop Improvement
CRP:	UNSPECIFIED
Uncontrolled Keywords:	combining ability, discriminating ability, GGE Biplot, heterotic groups, rank correlation, tester efficiency
Subjects:	Mandate crops > Millets > Pearl Millet
Depositing User:	Mr Nagaraju T
Date Deposited:	28 May 2024 05:41
Last Modified:	28 May 2024 05:41
URI:	http://oar.icrisat.org/id/eprint/12683
Official URL:	https://onlinelibrary.wiley.com/doi/abs/10.1111/pb...
Projects:	Pearl Millet Hybrid Parents Research Consortium
Funders:	UNSPECIFIED
Acknowledgement:	The authors gratefully acknowledge the funding support from Pearl Millet Hybrid Parents Research Consortium to carry out this research work.
Links:	Google Scholar

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