Indian Society of Genetics & Plant Breeding

Inheritance of pod setting under low temperature in pigeonpea

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Six basic populations (P1, P2, F1, F2, B1 and B2) of 12
crosses involving four susceptible (MAL 17, NDA-1, BHUA
96-13-3 and BHUA 96-21-4) and three tolerant (MAL 19,
NDA 99-1 and NDA 49-6) genotypes were analyzed to
observe the inheritance of pod setting under low
temperature in pigeonpea [Cajanus cajan (L.) millsp]. All
the F1 s bore pods even under low temperature as was
evident in tolerant parents indicating the dominancy of
pod setting over susceptibility. The F2 segregation ratio
of 3:1 (tolerant : susceptible) indicated that pod setting is
governed by single dominant gene. The observations of
segregation pattern of B1 (F1 x tolerant parents) further
confirmed the F2 ratio since all the plants bore pods under
low temperature. Similarly B2 (F1 x susceptible parents)
also exhibited 1:1 (tolerant: susceptible) segregation
further confirmed the F2 ratio.

Keywords: Pigeonpea, Cajanus cajan, inheritance, pod setting, low temperature


Year: 2010
Volume: 70
Issue: 3
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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