volume 35 issue 1 (march 2012) : 36 - 39
HETEROSIS AND INBREEDING DEPRESSION FOR VEGETATIVE TRAITS IN GROUNDNUT (ARACHIS HYPOGAEA L.)
1Regional Agricultural Research Station,
Tirupati-517 502, India.
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Legume Research
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volume 35 issue 1 (march 2012) : 36 - 39
HETEROSIS AND INBREEDING DEPRESSION FOR VEGETATIVE TRAITS IN GROUNDNUT (ARACHIS HYPOGAEA L.)
1Regional Agricultural Research Station,
Tirupati-517 502, India.
ABSTRACT
Among twenty eight F1s studied, twenty F1s exhibited significant positive heterosis over better parent. The F1, TPT-4 x K-1375 expressed the highest significant positive relative heterosis (41.73%) and heterobeltiosis (35.09%) with moderate inbreeding depression (11.39%) indicating the presence of additive gene action for the expression of plant height. For number of primary branches per plant, the F1, ICGV-91114 x K-1375 recorded the highest significant positive heterosis over mid-parent (41.68%), heterobeltiosis (22.48%) and standard heterosis (40.35%) with the highest (22.22%) inbreeding depression indicating the chances of getting desirable genotypes through selection from the further segregating generations of this cross. The F1, ICGV-91114 x K-1375 recorded the highest relative heterosis (469.23%) and heterobeltiosis (428.57%) coupled with high positive inbreeding depression for number of secondary branches per plant indicating the preponderance of additive gene action in the inheritance of this trait.
REFERENCES
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- Nadaf, H.L., Habib, A.F., Sresh, S., Patil and Syed Sadaqat. (1988). Heterosis and combining ability studies in Groundnut. J. Oilseeds Res. 5:7-15.
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In this Article
APC
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Published In
Legume Research