Analysis on the Main Botanical Characters of 41 Cucurbita moschata Varieties

41个肉用老南瓜品种主要植物学性状分析（英文）

In order to scientifically evaluate the values of Cucurbita moschata cultivars, main botanical characters including the initial flowering date, the first fruiting node, fruit length, fruit stem length, stem diameter, internode length, the transverse and longitudinal diameters of the largest leaf, single fruit weight, flesh thickness and soluble solid content of 41 cultivars were measured for conducting diversity, correlation and cluster analysis. The results revealed that the pumpkin cultivars showed large variations in fruit stem length, single fruit weight, fruit length and flesh thickness, but small variations in initial flowering date. Significant, even highly significant correlations were found among the tested traits. Cluster analysis demonstrated that the 41 old Cucurbita moschata cultivars were divided into three groups, of which multiple traits of Group 1 were better than those in the other two groups. High similarities existed in three groups and the cultivars in each group. This research provided basis for selecting excellent traits and parents for the breeding of hybrids.

为科学评价国内肉用老南瓜品种,对参展的41个肉用老南瓜品种的始花期、第一坐瓜节位、果长、把长、茎粗、节间长、最大叶纵横经、单果重、果肉厚和可溶性固形物含量等主要植物学性状进行了多样性、相关性和聚类分析。结果表明,41个肉用老南瓜品种在把长、单果重、果长和肉厚等性状变异幅度较大,在始花期性状上变异幅度较小;各性状之间均存在显著或者极显著的相关性。聚类分析表明41个肉用老南瓜可以分为3组,其中第1组在多个性状上优于第2和3组群,但各组间及组内品种间的相似性较高。研究结果为老南瓜育种的优良性状选择和亲本选用提供了依据。