"11578","8","archive","3170",,,"disk0/00/01/15/78","2020-08-31 06:44:43","2020-08-31 06:45:28","2020-08-31 06:44:43","article",,,"show",,,,"","","","","","","","","","",,,,"Patil","K S","","","","","",,"Patil","K S","","","","",,,,,"","",,,,,"","","ICRISAT (Patancheru)","India","African and Asian origin pearl millet populations: Genetic diversity pattern and its association with yield heterosis","pub","PG2","CRPS2","","public",,,"Pearl Millet, Breeding",,"This research was financially supported by the CGIAR
Research Program on Dryland Cereals Scholarship (CRPDC)
and the 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. Thanks
are also due to Dr. Marilyn L. Warburton (USDA-ARS
Corn Host Plant Resistance Research Unit, PO Box 9555,
Mississippi State) for her valuable inputs and suggestions
in planning the molecular diversity work.","Pearl millet [Pennisetum glaucum (L.) R. Br.] is a staple food crop of arid and
semi-arid regions of Asia and Africa. Forty-five pearl millet populations of Asian
and African origin were assessed for genetic diversity using 29 simple sequence
repeat (SSR) markers. The SSR-based clustering and structure analyses showed
that Asian origin–Asian bred (As-As) and African origin–African bred (Af-Af)
populations were distributed across seven clusters, indicating no strong relationship
among populations with their geographical origin. Most of the African
origin–Asian bred (Af-As) populations had a higher average number of alleles per
locus than As-As or Af-Af populations, and the majority of them clustered separately
from As-As or Af-Af populations, indicating that introgression of African
origin breeding materials led to the development of new gene pools adapted to
the Asian region. Fourteen populations representing seven clusters were crossed
according to a diallel mating design to generate 91 population hybrids (seeds of
direct and reciprocal crossesweremixed) and evaluated at three locations in 2016.
All the 91 hybrids when partitioned into three groups based on genetic distance
(GD) between parental combinations (low,moderate, and high), revealed no correlation
between GD and panmictic midparent heterosis in any of the groups,
indicating that grain yield heterosis cannot be predicted based on GD. Two population
hybrids (GB 8735 × ICMP 87307 and Sudan I × Ugandi) exhibited high
levels of yield heterosis over standard checks and can be further utilized using
different breeding schemes to develop high-yielding pearl millet cultivars.","2020-06","published",,"Crop Science (TSI)",,,"Crop Science Society of America",,"1-15",,,,,,"doi:10.1002/csc2.20245",,,,,"TRUE",,"0011-183X",,,,,,"","https://doi.org/10.1002/csc2.20245","https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=10.1002%2Fcsc2.20245&btnG=","pub",,"","",,,,,,"",,,,,,,"",,,,,"",,,,,"","",,,,,"","",,,,,
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