利用形态和SNAP标记评价引种大豆和印尼大豆基因型的遗传变异

P. Lestari, K. Nugroho, R. T. Terryana, Sustiprijatno Sustiprijatno, M. Mastur, Andy Agus Cahyono, D. Saptadi
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引用次数: 1

摘要

66个大豆(Glycine max (L.))的遗传变异利用10个单核苷酸扩增多态性(SNAP)标记对从公共领域检索到的形态特征进行了补充,估计了25个印尼改良品种和41个引进品种的梅里尔(Merril)基因型。数量形态性状(株高、粒重和产量)变异较大(CV>20%),而质量形态性状多样性相对中等(0.25 ~ 0.50)。产量与种子重呈显著正相关,与含油量呈中等正相关。特征值在茎长、花色、种皮色、株高、籽粒重、蛋白质含量、含油量和产量上的变异最大,说明它们是选择描述因子。印尼改良品种在形态上的变异小于引进品种。形态性状基因型间的关系与来源无关。基于SNAP构建的66个基因型的遗传相似性树状图鉴定出4个主要聚类,截断值为0.59。印尼改良品种的遗传范围比引进品种窄。印度尼西亚改良品种比美国改良品种更接近东亚的基因型,表明它们的起源关系。值得注意的是,基于SNAP标记的系统发育分析证实了比形态特征更清晰的分离。这些信息可为今后印尼大豆育种中有效的基因型鉴定和选择提供参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment of Genetic Variability in Introduced and Indonesian Soybean Genotypes Using Morphological and SNAP Markers
Genetic variability of 66 soybean (Glycine max (L.) Merril) genotypes comprising 25 improved varieties from Indonesia and 41 introduced genotypes was estimated using ten Single Nucleotide Amplified Polymorphism (SNAP) markers to complement the morphological characters searched from public domain. A number of quantitative morphological characters (plant height, seed weight and yield) showed high variations (CV>20%), while the diversity of qualitative morphological characters was relatively moderate (0.25-0.50). Yield was strongly correlated with seed weight, but moderately correlated with oil content. Eigen values indicated the highest variation on stem determination, flower color, seed coat color, plant height, seed weight, protein content, oil content and yield, suggesting their contribution as selection descriptors. Indonesian improved varieties less varied than introduced genotypes according to the morphology. The relationship among genotypes according to morphological characters was not relevant with the origin. The dendrogram constructed based on genetic similarity among 66 genotypes using SNAP identified four main clusters with a cut off of 0.59. Indonesian improved varieties were more narrow their genetic than introduced genotypes. Indonesian improved varieties were closer to genotypes from East Asia than those from United States, indicating their origin relation. Notably, phylogenetic analysis based on SNAP markers confirmed clearer separation than morphological characters. This information could be useful for efficient identification of genotypes and selection in the future soybean breeding in Indonesia.
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