Indian Society of Genetics & Plant Breeding
The genetic base of 150 pigeonpea varieties released in
India during1960 to 2018 was examined. Of these, 89, 57,
three, and one variety were developed by pedigree selection,
pureline selection, mutation and population improvement,
respectively. Examination of pedigree records of 89
pigeonpea varieties developed through pedigree breeding
method between 1971 and 2018 traced back to 113
ancestors. The highest mean genetic contribution was
recorded for the genotype T 190 (0.051) accompanied by
UPAS 120 (0.049) and ICP 8863 (0.043). The ancestor T 190
appeared with highest frequency of 21, directly as one of
the parent (male/female) in four varieties and indirectly in
the development of 17 varieties. Similarly, the ancestors
UPAS 120 and ICP 8863 were more frequently used (in nine
varieties) as direct parents followed by T 21 and C 11 (in
five varieties). The variety PRG 176 involved the highest
number (9) of ancestors during the course of its
development followed by the variety VBN (Rg) 3 with eight
ancestors. Results indicated that 51.69% (46 of the 89
varieties) of released varieties were developed through biparental
crossing whereas 48.31% involved multiple parents.
The frequent use of a limited number of ancestors has
caused the narrow genetic base of released pigeonpea
varieties. We recommend large-scale deployment of novel
germplasm resources for generating broad-base breeding
populations. This will help to obtain improved pigeonpea
cultivars with high grain yield, biotic tolerance and climate
adaptation.
Keywords: Cajanus cajan, Diversity, Genetic base, Pedigree, Pigeonpea
Year: 2020
Volume: 80
Issue: 1
Article DOI: 10.31742/IJGPB.80.1.9
Print ISSN: 0019-5200
Online ISSN: 0975-6906
S. J. Satheesh Naik, I. P. Singh, Abhishek Bohra, F. Singh, D. Datta, R. K. Mishra, Shefali Tyagi, Alok Kumar Maurya and N. P. Singh info_circle
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