conference schedule and program with abstracts - Horticulture ...

P-5
Inheritance of some fruit quality characters in Vitis vinifera grapes
P.G. Fan 1 , B.H. Wu 1 , H.F. Liu 1 , Z.C. Liang 1 , C.X. Yang 1 , L.J. Wang 1 , S.H. Li* 2
1
Institute of Botany, Chinese Academy of Sciences, Beijing, China; 2 Wuhan Botanical Garden,
Chinese Academy of Sciences, Wuhan, China
* Corresponding author: shhli@wbgcas.cn
The inheritance of Vitis vinifera table grape qualities, soluble sugars, organic acids, anthocyanins
and volatiles were investigated on three progenies, ‘Jingxiu’ × ‘Muscat of Alexandria’, ‘Jingxiu’
× ‘Xiangfei’, and ‘Jingxiu’ × ‘Jingzaojing’ in two successive years. The means of progeny sugar
content were lower than mean parent values. There was no significant difference in broad-sense
heritability of sugars among three progenies, although the paternal parents had different sugar
levels. It indicated that high sugar contents in parents may not be prerequisite to obtain
genotypes with high sugar content. The means of progeny malic acid content were higher than
mean parent values, and inheritance of malic acid was strongly additive, while the means of
progeny tartaric acid content were lower than mean parent values, and inheritance of tartaric acid
was non-additive. It suggested that high tartaric acid content in parents would be necessary for
wine grape breeding in order to improve tartaric acid content in progenies, and low malic acid
content in parents would be good for table grape breeding. The proportion of anthocyanins in the
maternal parent determined the proportion of anthocyanins in the offspring. But the absolute
content of the maternal parent had no significant effect on progenies. The presence or absence of
anthocyanins in grape skin was controlled by oligogenes, and anthocyanin content was a
quantitative character controlled by polygenes. Anthocyanin contents had high broad-sense
heritability, which was stable in the three progenies. However, the mean content of anthocyanins
was different among the three progenies, which suggested that the white paternal parents might
have an effect on the anthocyanin content in progenies. All the parental aromatic compounds
existed in their progenies, and the contents of the aromatic compounds showed a high variability
in the progeny populations. However, among aromas, terpenoids were only detected in the
paternal parents ‘Muscat of Alexandria’ and ‘Xiangfei’, and were not identified in another
paternal parent ‘Jingzaojing’ and the maternal one ‘Jingxiu’. The presence or absence of
terpenoids in berries was controlled by oligogenes, and terpenoid content was a quantitative
character controlled by polygenes. Moreover, the progeny of ‘Jingxiu’ × ‘Xiangfei’ had higher
terpenoid content than those from ‘Jingxiu’ × ‘Muscat of Alexandria’, indicating that the Muscat
parents should have an effect on the terpenoid content of progeny populations.
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