Establishment of Core Collection for Tree Peony Cultivars from Central China

doi:10.7668/hbnxb.2011.03.021

Abstract

Abstract: Based on the data of morphological and agronomic traits and the molecular marker information of ISSR and AFLP of the primary core collection including 120 tree peony cultivars from Central China,the study of how to establish a core collection of tree peonies from Central China was carried out.The result showed that the best method for establishing the core collection was from the UPGMA cluster drawing samples which combined the phenotypic traits with two kinds of molecular marker information.Test results showed that some testing parameters and the average genetic distance between cultivars of the core collection were bigger than the primary collection and the reservation collection.The ratio of retained phenotype traits exceeded 99%.The retention rates of polymorphic locus and the average allele number observed were more than 94.95%.Therefore,the core collection could furthest represent the genetic diversity of the primary collection and made a basement to hybrid breeding and germplasm reservation of Chinese tree peony cultivars.

Key words: Chinese tree peony, Core collection, Phenotypic traits, Molecular mark

CLC Number:

S02.4

LI Bao-yin, ZHOU Xiu-mei, ZHANG Qi-xiang. Establishment of Core Collection for Tree Peony Cultivars from Central China[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(3): 100-105. doi: 10.7668/hbnxb.2011.03.021.

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