Morphological and allozyme variation in a collection of Cucumeropsis mannii Naudin (Cucurbitaceae) from Côte d'Ivoire |
| |
Authors: | Kouamé K Koffi Ahou A Gbotto Marie Malice Yao Djè Pierre Bertin Jean-Pierre Baudoin Irié A Zoro Bi |
| |
Institution: | 1. Université d''Abobo-Adjamé, UFR des Sciences de la Nature 02, BP 801 Abidjan 02, Côte d''Ivoire;2. Unité de Phytotechnie Tropicale et d''Horticulture, Faculté universitaire des Sciences agronomiques de Gembloux, Passage des Déportés 2, B-5030 Gembloux, Belgium;3. Unité d''Ecophysiologie et Amélioration Végétale, Université catholique de Louvain, Belgium |
| |
Abstract: | To 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 (Ho). The level of the within accessions genetic diversity (HS = 0.078) was higher than among accessions (DST = 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. |
| |
Keywords: | Isozyme variation Cucumeropsis mannii Cucurbit Morphological variability Cultivar identification |
本文献已被 ScienceDirect 等数据库收录! |
|