FRUIT TRAITS AND GENETIC DIVERSITY OF RED-FLESHED KIWIFRUIT GERMPLASM
Red-fleshed kiwifruit germplasm, in particular those in wild, is important for kiwifruit breeding. In this study, we presented the results of recent investigations on the naturally distributed red-fleshed kiwifruit resources in China. In total, 52 wild accessions and two cultivars of red-fleshed kiwifruit germplasm belonging to three Actinidia taxa (A. arguta, A. chinensis and A. deliciosa) were collected. All these collections, distributed mainly in Hunan, Hubei, Henan, Jiangxi, Sichuan and Shaanxi provinces of China. The collected accessions have rich variation in both fruit traits and genetic diversity which evaluated by genomic-wide AFLP markers. AFLP analysis using four primer combinations shown a total of 259 polymorphic bands, and the percentage of polymorphic bands was 90.56%. Genetic similarity based on AFLP markers ranged from 0.568 to 0.883, with an average of 0.714. UPGMA cluster and Principal coordinate analysis separated 54 accessions into four major groups. Accessions of red-fleshed kiwifruit in A. argute grouped together, accessions in A. chinensis and A. deliciosa had closely genetic relationship and would be clustered preferentially related to their geographical origin. A significant though moderate correlation (r=0.581, P<0.001) was observed between AFLP and morphological data. Both AFLP markers and morphological traits could be used to characterize red-fleshed kiwifruit germplasm, and would be valuable for germplasm management and utilization.
Sui, L., Liu, Y.F. and Huang, H.W. (2015). FRUIT TRAITS AND GENETIC DIVERSITY OF RED-FLESHED KIWIFRUIT GERMPLASM. Acta Hortic. 1096, 141-148
red-fleshed kiwifruit, germplasm resources, fruit traits, AFLP, genetic diversity