期刊
PLANT BREEDING
卷 125, 期 3, 页码 277-280出版社
WILEY
DOI: 10.1111/j.1439-0523.2006.01224.x
关键词
Cucumis sativus; quantitative inheritance; gene action; epistasis; generations means analysis
Parthenocarpy (seedless fruit) has potential for increasing yield in cucumber (Cucumis sativus var. sativus L.). To determine the inheritance of parthenocarpy in gynoecious cucumber, P-1, P-2, F-1, F-2, BC1P1, and BC1P2 generations derived from crossing two non-parthenocarpic gynoecious inbred lines [Gy8 (P-2; processing type) and 'Marketmore 80' (P-2; MM, fresh market type)] with a highly parthenocarpic inbred line [2A (P-1; processing type)] were evaluated for fruit number in a greenhouse at Arlington, Wisc. in 1999 (designated 2A x Gy8 1999) and in the open-field at Hancock, Wisc. in 2000 (designated 2A x Gy8 2000 and 2A x MM 2000). There were significant location and location x generation interaction effects, and therefore generation means analyses were conducted separately for each location. The minimum numbers of effective factors controlling parthenocarpy were estimated to be at least one (2A x Gy8 1999), two (2A x Gy8 2000) and four (2A x MM 2000). Results suggest that selection for parthenocarpy for multiple hand harvest operations will likely be more effective than that for once-over machine harvest operations. However, the selection efficiency will likely vary across different populations and environments.
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