Abstract
Abstract In an effort to develop a high-yielding, determinate plant type with multiple lateral branches, crosses were made between two determinate Cucumis sativus var. sativus lines (‘Spacemaster’ and NCSU M27) and a C. sativus var. hardwickii (R.) Alef. line, LJ 90430. Individual plant data from six generations (P1, P2, F1, F2, BC1P1, BC1P2) were subjected to an analysis of generation means to determine the importance of gene effects for number of nodes, number of primary lateral branches, average internode length, main stem length, and number of fruit per plant at maturity. A simple additive-dominance model adequately explained variation for number of primary laterals in both crosses, and average internode length in the ‘Spacemaster’ × LJ 90340 cross. For all other traits, it was necessary to add one or more digenic epistatic effects to the model. Heterosis of the F1 over the mid-parent was highly significant for all traits in both crosses. Heterosis above the high-parent was observed for average internode length and main stem length. Dominance for number of primary laterals was in the direction of the parent with higher lateral number.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the American Society for Horticultural Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
