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运用典范相关分析方法,对西藏及周边地区芥菜型油菜的产量性状、主茎性状、分枝性状、角果性状等4组性状间的典范相关关系进行了比较研究。结果表明:(1)所研究的18个性状中,西藏芥菜型油菜的平均数为周边地区芥菜型油菜的1.88倍,总体变异系数比周边省份芥菜型油菜高10.22%;(2)西藏芥菜型油菜单株产量主要取决于每株角果数和千粒重,而周边省份芥菜型油菜单株产量主要取决于每株有效角果数,中国周边国家芥菜型油菜单株产量主要取决于每株有效角果数和千粒重;(3)影响西藏芥菜型油菜产量性状最重要的因素是角果性状,其次是分枝性状和主茎性状,而影响周边省份和中国周边国家芥菜型油菜产量性状最重要的因素则是主茎性状,其次是分枝性状和角果性状。
Canonical correlation analysis was used to study the canonical correlations among four traits of Brassica juncea such as yield traits, main stem traits, branching traits and fruit traits in Tibet and the surrounding areas. The results showed that: (1) Among the 18 traits studied, the average number of Brassica juncea in Tibet was 1.88 times higher than that in the surrounding area, and the overall coefficient of variation was 10.22% higher than that of the surrounding provinces Brassica juncea. (2) The yield per plant of oilseed rape mainly depends on the number of pods and grain weight per plant, while the yield per plant of Brassica juncea in the neighboring provinces depends mainly on the number of effective pods per plant. The yield per plant of Brassica juncea in the neighboring countries of China mainly depends on the effective angle Fruit number and 1000-grain weight. (3) The most important factor influencing the yield traits of Brassica juncea in Tibet was pod fruit traits, followed by branching traits and main stem traits, which affected the yield traits of Brassica juncea in neighboring provinces and neighboring countries in China Factors are the main stem traits, followed by branching traits and fruit traits.