No abstract

a b s t r a c tTo set up a rational collecting strategy for germplasm of the edible-seeded cucurbit Cucumeropsis mannii, a study was conducted using 24 morphological and seven putative enzyme markers to determine the intra-specific variability from 16 and 22 accessions (representing three cultivars), respectively. The analysis of variance, showed a significant difference between the three cultivars. Principal component analysis pointed out a variation among individuals, mainly on the basis of flower, fruit, and seed size. Dendrogram with UPGMA method allowed clustering of the cultivars. Genetic diversity indices estimated equalled: 9.96% for the proportion of polymorphic loci (P), 1.10 for the number of alleles (A) and 0.023 for observed heterozygosity (H o ). The level of the within accessions genetic diversity (H S ¼ 0.078) was higher than among accessions (D ST ¼ 0.042). Nei's genetic distances between the three cultivars were also low (0.079-0.147), indicating a high degree of similarity of the analysed cultivars.Crown

No abstract

This andromonoecious species has the potential for a mixed mating system with high dependence on insect-mediated pollination. The selfing rate through geitonogamy should be important.

No abstract