Indian Journal of Genetics and Plant Breeding (The)
Year : 1981, Volume : 41, Issue : 3
First page : ( 366) Last page : ( 367)
Print ISSN : 0019-5200. Online ISSN : 0975-6906.

Heterosis in Field Bean

 Chikkadevaiah, Shivashankar G., Virupakshappa K., Hiremath Shantha R.

Division of Agricultural Botany, University of Agricultural Sciences, Hebbal, Bangalore-560 024, India

Abstract

Heterosis for seed yield and its component characters was studied in 17 crosses of field bean (Dolichos lablab L., Syn: Lablab purpureas (L.) Sweet). The percentage of heterosis for seed yield in F_IS over their respective mid-parents ranged from 1–61 to 293-11 and over better parent the range was -44-21 to 166-91. Three top crosses involved low X high yielding parental lines; out of 6 which did not express significant heterosis, 4 crosses fell in low X low group. In all most all the crosses heterosis in yield was accompanied by heterosis in pods per plant; negative heterotic effects were recorded for 100-seed weight over better parent in most of the crosses. Pods/plant contributed positively to yield enhancement of F_IS followed by pod width.

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