关键词: 黄瓜, 种质资源, 单性结实, 评价

Abstract:

Parthenocarpy of 75 cucumber germplasm and cultivars was evaluated under greenhouse condition in spring season. The results showed that the parthenocarpy percentage of 75 accessions was continuously distributed from 0 to 100% . While 40 accessions were found strongly parthenocarpy (53.3%), 24 were medium (32%) and 11 were weakly parthenocarpic (14.7%). 20 out of the 24 cultivars were found as strong parthenocarpy (83.3%), and the rest was mid-parthenocarpy. The degree of parthenocarpy was expressed by the fruit set capability, and the fruit weight and fruit shape index of the seedless fruit present a good similarity with that of the seeded. The cucumber plants get stronger parthenocarpic with the nodes increase and the best evaluation should be done under 20th nodes.

Key words: cucumber, germplasm, parthenocarpy, evaluation