Mapping of quantitative trait loci corroborates independent genetic control of apple size and shape
Mapping of quantitative trait loci corroborates independent genetic control of apple size and shape
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DOI：
10.1016/j.scienta.2014.05.019
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发表时间：
2014-07-22
影响因子：
4.3
通讯作者：
Han, Zhenhai
中科院分区：
文献类型：
--
作者：
Chang, Yuansheng;Sun, Rui;Han, Zhenhai
果实大小和形状是经济作物重要的外部品质性状。为了确定苹果果实大小和形状之间的遗传关系，以“乔纳森”ד金冠”杂交后代为材料，对苹果大小（平均重量）、长度、直径和形状（长/直径比）的数量性状lad（QTL）进行了定位。果实大小、长度和直径服从正态分布。苹果的大小和形状之间没有相关性，但这两个变量与长度和直径呈显著相关。将45个控制苹果大小、长度、直径和形状的QTL定位到两个亲本的13条染色体上。其中，12个果实长度和直径的QTL与果实大小的QTL重叠或紧密相关，而3个与果实形状的QTL共定位。没有一个果实大小的QTL与果实形状的QTL定位在同一区域或相邻区域，表明果实大小和形状受独立的遗传控制。(C)2014爱思唯尔有限公司版权所有。
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. (C) 2014 Elsevier B.V. All rights reserved.