Differentiation among barley landrace populations from the Near East
Differentiation among barley landrace populations from the Near East
复制标题
近东大麦地方品种种群的分化
DOI：
10.1007/bf00037893
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发表时间：
1989
期刊：
影响因子：
1.9
通讯作者：
E. Weltzien
中科院分区：
文献类型：
--
作者：
E. Weltzien
摘要 通过使用在叙利亚有利环境中生长的地方品种的穗后代的各种形态和发育性状，研究了来自叙利亚和约旦的 67 个大麦地方品种的变异结构。因子分析用于识别占地方品种群体总变异主要比例的性状复合体。随后，根据所有性状的相似性，地方品种被分为九个不同的组。每个群体都与特定的地理或环境因素密切相关，表明适应性过程也在当前的农业系统中发挥作用。这些结果表明，彻底描述种质资源的起源地点是有用的。最后，我调查了地方品种之间数量变异中由于植物类型差异造成的比例。根据定性遗传形态特征的相似性对种群进行分组。随后对数量遗传性状的方差分析表明，这种类型的分类在分配组间和组内的方差方面与地理分组一样有效。这一结果表明，种质资源可以根据地理信息或形态相似性进行排列。讨论了农艺评估和种质资源利用的实际意义。
SummaryThe structure of variation in 67 barley landraces from Syria and Jordan was investigated by using various morphological and developmental traits measured on spike progenies from the landraces grown in a favorable environment in Syria. Factor analysis was used to identify trait complexes that accounted for major proportions of the total variation among landrace populations.Subsequently, the landraces were clustered into nine distinct groups based on their similarity for all traits. Each group showed a close association to specific geographic or environmental factors, indicating that adaptive processes also are operating in current agricultural systems. These results show the usefulness of thoroughly describing the locations where germplasm accessions originate.Finally, I investigated what proportion of the quantitative variation among landraces was due to differences in plant type. Populations were grouped according to their similarity for qualitatively inherited morphological traits. Subsequent analyses of variance on quantitatively inherited traits showed that this type of classification was as effective as geographic grouping in distributing the variance among and within groups. This result suggests that germplasm collections can be arranged according to either geographic information or morphologic similarity. Practical implications for agronomic evaluation and utilization of germplasm collections are discussed.