Year: 2015 | Month: March | Volume 8 | Issue 1
Exploitation of heterosis and combining ability for earliness and vegetative traits in ridge gourd [luffa acutangula (roxb.)L.]
DOI:10.5958/2230-732X.2015.00020.0
Abstract:
Eight parental lines and 28 F1 hybrids of ridge gourd obtained from half-diallel were studied to investigate the extent of combining ability and heterosis for earliness and vegetative characters. Appreciable heterosis in desirable direction was found over better parent and check parent for the characters viz. days to first female flower, node number to first female flower, vine length (m), number of primary branches and days taken to Ist fruit harvesting. Crosses PCPGR 7256 X PRG 142, PRG 117 X PRG 142, PRG 117 X PRG 131, PRG 117 X PRG 132 and PRG 117 X PRG 120 were found promising for earliness. Crosses PCPGR 7256 X PRG 117, PCPGR 7256 X PRG 131 and PRG 132 X PRG 120 were recorded promising for vegetative traits. Regarding general combining ability the parents PRG 117 and PRG 142 found best for earliness and for vegetative growth PRG 131 stood in top. The crosses PRG 131 X PRG 132 and PCPGR 7256 X PRG 142 showed highest specific combining ability for earliness and both the crosses PCPGR 7256 X PRG 117 and PRG 132 X PRG 120 found best for different vegetative traits.
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