论文部分内容阅读
分别于1985—1986年和1987—1988年两个生产季节,在半干旱的地中海气候条件下,对包括叙利亚在内的22个国家基因库的7600多个品种(系)进行了鉴定。本文用了7个农艺性状的数据评价了基因库的种质特性和表型相异性。单变统计分析揭示,不同来源材料的所有性状都有差异。来自印度的种质的平均表型相异性程度最高,而来自保加利亚的最低。正则变换分析表明,前3个正则变量能解释总变异的77.7％。多变分析证明埃塞俄比亚种质具有特异性。来自叙利亚和约旦的基因库,彼此之间很相似,同时又都与其它基因库相离异。来自希腊、摩洛哥和法国的种质也具有某种特性。本鉴定结果为育种工作、种质收集和“核心”收集库的建立提供了非常有用的资料。本研究还证明,尽管种质交换在创造理想性状的整个变异中是一个很重要的因素,但环境条件必竟起着主要作用。
More than 7,600 varieties (lines) of 22 national gene banks including Syria were identified in the two production seasons of 1985-1986 and 1987-1988 under semi-arid Mediterranean climatic conditions. In this paper, the data of seven agronomic traits were used to evaluate the germplasm and phenotypic dissimilarity of genebank. Univariate statistical analysis revealed that all traits of materials from different sources are different. Germplasm from India had the highest average phenotypic dissimilarity, while the lowest from Bulgaria. Canonical transformation analysis showed that the first three regular variables explained 77.7% of the total variance. Varying analyzes show Ethiopian germplasm is specific. Gene banks from Syria and Jordan are very similar to each other and at the same time are all divorced from other gene banks. Germplasms from Greece, Morocco and France also have some characteristics. The results of this appraisal provide very useful information for breeding work, germplasm collection and establishment of a “core” collection library. This study also demonstrates that although germplasm exchange is a very important factor in creating the entire variation of ideal traits, environmental conditions play a major role.