Analysis of genetic diversity among a set of accessions from the IVIA's persimmon collection
In Spain, persimmon (Diospyros kaki Thunb.; 2n=6x=90) production has become an alternative to producing major fruit crops. The aim of the Instituto Valenciano de Investigaciones Agrarias's (Valencia, Spain) persimmon breeding program is to increase the range of available cultivars. Genetic resources collections are an important tool for breeding. Knowledge of the germplasm's genetic structure is valuable for improving the management of plant materials in a breeding program. Here, 47 new accessions having different origins and two rootstock species were studied using 18 polymorphic microsatellite markers. Genetic structures were estimated using a Bayesian-based model clustering method, while a Neighbor-Joining phylogenetic tree was constructed to visualize the genetic relationships among the samples. Evanno's test of the Bayesian-based model estimation found that three populations were the most informative. Persimmon cultivars are classified in four types, pollination-constant non-astringent, pollination-variant non-astringent, pollination-constant astringent and pollination-variant astringent, based on their astringency. Using these types, most of the pollination-constant and pollination-variant non-astringent accessions were grouped separately from the pollination-constant and pollination-variant astringent accessions, regardless of their origin.
Gil-Muñoz, F., Zuriaga, E., Badenes, M.L. and Naval, M.M. (2018). Analysis of genetic diversity among a set of accessions from the IVIA's persimmon collection. Acta Hortic. 1195, 43-50
Diospyros kaki, genetic distance, microsatellite markers, astringency type