Geographic patterns of genetic diversity and fertility restoration ability of Asian and African origin pearl millet populations

Patil, K S and Gupta, S K (2021) Geographic patterns of genetic diversity and fertility restoration ability of Asian and African origin pearl millet populations. The Crop Journal (TSI). pp. 1-9. ISSN 2214-5141

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Abstract

A set of 45 diverse Asian and African origin/bred populations of pearl millet were investigated multi-locationally for morphological traits including grain yield and assessed for their fertility restoration ability on three cytoplasmic male sterility (CMS) systems in two contrasting seasons. Significant genetic variation was found for all the yield linked traits. Multivariate analysis for grain yield and its component traits grouped these populations into five clusters. Most of the Asian origin populations grouped into single cluster (Cluster III) and separated from the rest of the African origin populations indicating the presence of correspondence between clustering pattern and geographical origin of the populations. Clusters dominated with Asian populations (As-As) had linkages with early flowering, short plant height, more number of tillers, small and thin panicles, small seeded and low grain yield compared to the clusters dominated by African populations (Af-Af) or African origin and Asian bred (Af-As) populations. Genetically related populations having common parentage were found grouped in same clusters. Fertility restoration/maintainer frequency of 45 populations on three diverse CMS systems revealed that overall fertility restoration frequency was highest for A1 (86%) followed by A4 (37%) and for A5 (7%) CMS system. Five populations were identified as potential sources for developing maintainer lines for all three CMS systems and eight populations were identified specifically for A4 and A5 CMS systems. A set of 11 and four populations were identified for restorer line development exclusively for A1 and A5 CMS system, respectively. Six populations were identified for the development of dual restorers for both A1 and A4 CMS system.

Item Type:	Article
Divisions:	Research Program : Asia
CRP:	UNSPECIFIED
Uncontrolled Keywords:	CMS systems, Fertility restoration, Morphological diversity Pearl millet, Populations
Subjects:	Others > Plant Breeding Mandate crops > Millets > Pearl Millet
Depositing User:	Mr Arun S
Date Deposited:	15 Jul 2021 09:57
Last Modified:	15 Jul 2021 09:57
URI:	http://oar.icrisat.org/id/eprint/11852
Official URL:	https://doi.org/10.1016/j.cj.2021.04.013
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	The research was financially supported by the CGIAR Research Program on Dryland Cereals Scholarship (CRP-DC) and S.M. Sehgal Foundation Fund, USA for carrying out a doctoral study of K. Sudarshan Patil at ICRISAT. We gratefully acknowledge Dr. C.T. Hash (formerly Principal Scientist, ICRISAT, Niger) for helping with pedigrees of populations involved in the study.
Links:	Google Scholar

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