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

OAR@ICRISAT

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Relation http://oar.icrisat.org/11852/
https://doi.org/10.1016/j.cj.2021.04.013
doi:10.1016/j.cj.2021.04.013
 
Title Geographic patterns of genetic diversity and fertility restoration ability of Asian and African origin pearl millet populations
 
Creator Patil, K S
Gupta, S K
 
Subject Plant Breeding
Pearl Millet
 
Description 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.
 
Publisher Keai Publishing Ltd
 
Date 2021-05
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11852/1/The%20crop%20journal%20paper.pdf
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