关键词: 完全雄性柿种质, 中国甜柿, 可溶性单宁, 单宁细胞, 遗传改良

Abstract:

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 PCNA may generate in F1 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.

Key words: Chinese androecious genotype, C-PCNA persimmon, soluble tannin, tannin cell, genetic improvement