Abstract
The androecious genotype of Diospyros spp. ‘Male 8’, which is distributed in Dabie Mountain area of the central China, was probably derived from the hybrids or natural variation of Chinese pollination constant and non-astringent (CPCNA) persimmon. Its application potential as the breeding parent of pollination constant and non-astringent (PCNA) is undefined. In this study, we identified the astringency type of a hybrid individual (H8-2) derived from the cross between ‘Huashi 1’ (pollination variant and astringent, PVA) and ‘Male 8’. Through comparison with the known genotypes of CPCNA, Japanese PCNA (JPCNA) and non-PCNA, the results of soluble/insoluble tannin content and tannin cell size measure showed that H8-2 was a PCNA genotype with the characteristic of natural deastringency of CPCNA. According to the currently known genetic features of PCNA persimmon, a new individual of PCNA may be generated in F1 population when two JPCNA genotypes are crossed or when the CPCNA genotype is used as a parent. Thus, the study verifies that androecious genotype ‘Male 8’ carries the dominant gene locus that controls the non-astringent trait of CPCNA, indicating its potential to be used as pollen donor for the genetic improvement of PCNA persimmon.
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