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Mapping of quantitative trait loci corroborates independent genetic control of apple size and shape

文献类型: 外文期刊

作者: Chang, Yuansheng 1 ; Sun, Rui 1 ; Sun, Huanhuan 1 ; Zhao, Yongbo 2 ; Han, Yuepeng 3 ; Chen, Dongmei 2 ; Wang, Yi 1 ; Zhan 1 ;

作者机构: 1.China Agr Univ, Coll Agron & Biotechnol, Inst Hort Plants, Beijing 100193, Peoples R China

2.Hebei Acad Agr & Forestry Sci, Changli Inst Pomol, Changli 066600, Heibei, Peoples R China

3.Chinese Acad Sci, Wuhan Bot Garden, Wuhan 430074, Peoples R China

关键词: Fruit shape;Fruit size;QTL;Malus domestica

期刊名称:SCIENTIA HORTICULTURAE ( 影响因子:3.463; 五年影响因子:3.672 )

ISSN:

年卷期:

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收录情况: SCI

摘要: Fruit size and shape are important external quality traits in commercial crops. To determine the genetic relationship between the size and shape of apple fruits, quantitative trait lad (QTLs) for apple size (average weight), length, diameter, and shape (length/diameter ratio) were identified and mapped in progeny of a 'Jonathan' x 'Golden Delicious' cross. Fruit size, length, and diameter followed a normal distribution. There was no correlation between apple size and shape, but both variables were significantly correlated with length and diameter. Forty-five QTLs for apple size, length, diameter, and shape were mapped to 13 chromosomes of the two parent cultivars. Of these, 12 QTLs for fruit length and diameter either overlapped or were closely associated with QTLs for fruit size, whereas three co-localized with QTLs for fruit shape. No QTLs for fruit size mapped to the same or neighboring regions as QTLs for fruit shape, suggesting that size and shape are under independent genetic control

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