Classification of French maize populations based on morphological traits
Classification of French maize populations based on morphological traits
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DOI：
10.1051/agro:19970906
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发表时间：
1997-11-01
期刊：
影响因子：
--
通讯作者：
Boyat, A
中科院分区：
文献类型：
--
作者：
Gouesnard, B;Dallard, J;Boyat, A
对来自法国大都市的262个玉米群体在两个地点的农艺形态性状进行了遗传变异分析，主成分(PC)轴上最重要的变量是与成熟度性状、穗形和粒形有关的变量。在PC分析的第一个平面上，种群的分布是连续的，来自某些特定地区的种群被聚在一起：比利牛斯(早期材料和圆锥形耳朵)、阿尔萨斯(圆柱形耳朵)、Bresse(主要是小粒)、Vallee de la Garonne(晚期材料长耳朵或小粒)。对在前四个PC上计算的种群间距离矩阵和在地理坐标上计算的种群间距离矩阵进行了关联。基于前4个标准化PC轴(占变异的77%)，计算了系统分类，并用树状图确定了成熟度性状、果穗和籽粒形状在分类中的大小。
The genetic variability of the whole collection of 262 maize populations originating from metropolitan France was evaluated in two locations for agro-morphological traits, The most important variables in the principal component (PC) axis were related to maturity traits, and ear and grain shapes. On the first plane of the PC analysis, the distribution of populations was continuous, and populations from some particular regions were found grouped together: Pyrenees (early material and conical ears), Alsace (cylindrical ears), Bresse (mostly small kernels), Vallee de la Garonne (late material with long ears or with small kernels). The two distance matrices among populations calculated on the first four PC and on the geographic coordinates were correlated. Based on the first four standardized PC axes, which accounted for 77% of the variability, hierarchical classifications were computed and dendrograms confirmed the magnitude of maturity traits, and ear and kernel shapes in the classification.