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Heterotic pools in Asian and African pearl millet populations
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Wide variability exists among different pearl millet populations. This can be exploited for deriving new inbred lines and developing hybrids with high heterosis through formation of heterotic pools.
Heterotic pools in Asian and African pearl millet populations
About ICRISAT: www.icrisat.org
ICRISAT’s scientific information: http://EXPLOREit.icrisat.org
May 2017
Heterotic pools in Asian and African
pearl millet populations
Concept
Activities
Strategy
Outcome
▪▪ Morphological characterization of the diverse
populations.
▪▪ To determine the molecular marker (SSR)-based
genetic diversity within and between pearl millet
populations (Asian and African).
▪▪ To establish heterotic pool patterns in a broad range of
Pearl millet populations.
▪▪ To determine the fertility restoration or maintainer
frequency of diverse populations.
▪▪ Plant material: 48 diverse populations (Asian and
African).
▪▪ Number of SSR markers: 56.
▪▪ Assessment of inter- and intra-population distances.
▪▪ Inter-population crossing of diverse populations.
▪▪ 14 populations were selected and crossed in full
diallele fashion to produce 91 population hybrids.
▪▪ Evaluation of crosses to determine heterotic patterns:
91 hybrids, 14 parents and 5 checks were planted in
two replications at 3 locations (ICRISAT, Palem and
Jamnagar).
▪▪ Once the heterotic groups are established, it would be
possible to derive new wave of inbred lines from the
identified populations showing highest heterosis. This
will lead to the development of high-yielding pearl
millet hybrids for the future.
▪▪ Identifying new sources of restorers for A1, A4 and A5
cytoplasm.
▪▪ Wide variability exists among different pearl millet
populations. This can be exploited for deriving
new inbred lines and developing hybrids with high
heterosis through formation of heterotic pools.
▪▪ The proposed study will identify heterotic pool
patterns among available diverse populations
(involving promising Asian and African origin/bred
populations) through assessment of intra- and
inter-population genetic distances based on
molecular markers.
Clustering pattern of pearl millet populations based on SSR markers.
K Sudarshan Patil Ph.D. Research Scholar, Scholarship: CRP-Dryland Cereals
Funded by: Sehgal Foundation, USA