Abstract
ABSTRACTCucumber (Cucumis sativus L.) yield quantity and quality can be improved. Estimates of combining ability are useful in determining breeding value of cucumber lines by suggesting the appropriate use in breeding to generate new hybrids with high yield and quality. The research was conducted to estimate general and specific combining ability and heterosis in seven inbred lines proposed for cucumber breeding according previous research. The highest early yield specific combining ability (SCA) and general combining ability (GCA) were related to lines B10 and B12 and crosses B12 × A0 and B10 × A4. Lines A11 and B12 had the highest positive and negative cull yield GCA and the crosses A0 × B10 and A0 × B12 had the highest negative cull yield SCA. Lines B10, A4, and B12 and crosses B12 × A0, B10 × A11, and B10 × A4 had the highest positive marketable yield GCA and SCA. Lines B10 and A4 and crosses B12 × A0, B10 × A11, and B10 × A4 had the highest positive total yield GCA and SCA. Lines B10, B12, and A11 and the B10 × A4 cross had the highest positive simple weight index (SWI) GCA and SCA. Lines B10 and A4 are proposed for high-yield hybrid production, and their hybrid next generation are suitable for selecting and releasing new high-yielding lines.
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