Indian Society of Genetics & Plant Breeding

Important

POTENTIAL OF INTER-SUBSPECIFIC CROSSES IN GENERATING ERECT BUNCH SEGREGATES WITH DORMANCY IN GROUNDNUT (ARACHIS HYPOGAEA L.)

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Ten crosses involving nondormant Spanish bunch cultivars of groundnut as female and
dormant Virginia cultivars as male parents were assessed for seed dormancy on 10th day
after harvest in F2 generation. The Virginia cultivars recorded less than 40% germination
and clearly differed from Spanish bunch (> 500/0 germination). The germination of F2 plants
showed continuous distribution from 0 to 1000/0, indicating segregation for the character.
Only 70/0 plants were erect, of which 380/0 were dormant. But the frequency distribution of
erect plants among different germination categories revealed independent genetic control
of dormancy and growth habit. Thus, it is possible to increase the frequency of erect bunch
dormant plants either by increasing the population size or through backcrossing with the
erect bunch parents.
 

Keywords: Dormancy, growth habit, Spanish bunch, Virginia, groundnut.

Info

Year: 1997
Volume: 57
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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