Application Potential of Chinese Androecious Genotype,‘Male 8' as the Parent in the Genetic Improvement of PCNA Persimmon

ZHANG Na;MO Rong-li;ZHANG Qing-lin;LUO Zheng-rong;Key Laboratory of Horticultural Plant Biology,Huazhong Agricultural University;Industrial Crops Institute of Hubei Academy of Agricultural Sciences;Hubei Collaborative Innovation Center for the Characteristic Resources Exploitation of Dabie Mountains,Huanggang Normal University;

Chinese androecious genotype;;C-PCNA persimmon;;soluble tannin;;tannin cell;;genetic improvement

Distributed in Dabie mountain area of the central China,the androecious genotype,‘Male 8',probably derived from Chinese pollination constant & non-astringent persimmon(C-PCNA)hybrids or its natural variation. Although its application value in being dedicated pollinated varieties of PCNA has been reported,its application potential as breeding parent of PCNA is undefined. In this study,the hybrid individual,H8-2,derived from‘Huashi 1'(pollination variant & astringent persimmon,PVA)בMale 8'was taken as test materials. It was classified as PCNA type with the characteristic of natural astringency-loss in PCNA persimmons by determining tannin content,tannin cell size and other indexs of fruit,compared with common C-PCNA,Japanese PCNA persimmon(J-PCNA) and non-PCNA. According to the present research on genetic features of PCNA persimmon,the new individual of PCNAmay generate in F_1 populations when hybridize between J-PCNA types or one of the parents is C-PCNA. Thus,the study firstly demonstrated that Chinese androecious genotype,‘Male 8',carried the dominant gene that control natural loss of astringency in C-PCNA,which will bring an important application potential as the male parent for the genetic improvement of the PCNA persimmon.