中文摘要：

[目的]探讨我国西部地区芥菜型油菜农艺性状间的相互关系,为西部地区芥菜型油菜育种提供科学依据。[方法]以39份西部地区芥菜型油菜材料为对象,运用典型相关分析方法,对其产量性状（5个变量）、主茎性状（6个变量）、分枝性状（3个变量）、角果性状（4个变量）4组生态性状（共含18个变量）间的典型相关关系进行了研究。[结果]西部地区芥菜型油菜单株产量主要靠每株有效角果数取胜,每株角果总数、每角果粒数、千粒重的影响不明显;影响西部地区芥菜型油菜产量性状最重要的性状是主茎性状,其次是分枝性状和角果性状;西部地区芥菜型油菜产量性状、主茎性状、分枝性状、角果性状4组性状间均有密切的联系。[结论]要提高我国西部地区栽培芥菜型油菜产量性状,重点要抓好主茎性状,其次是分枝性状和角果性状;要选择每株角果总数、每株有效角果数优良的油菜品种应重点从有效分枝数、株高、主花序角果数、主花序果柄数等性状方面选择,要选择每角果粒数、千粒重优良的油菜品种应重点从果喙长度等性状方面选择。

英文摘要：

[Objective] The study aimed at exploring the relationship among the agronomic characters of B. juncea in western China, in order to provide scientific basis for the breeding of B. juncea in western China. [Method] 39 B. juncea materials from western China were used for the canonical correlation analysis, and canonical correlations between each pair of the four ecological character （containing 18 variables） were verified, including yield characters （5 variables）, caulis characters （6 variables）, branch characters （3 variables） and pod characters （3 variables）. [Result] Yield per plant of B. juncea in western China suffered a tremendous influence from effective pod number per plant while was not significantly affected by the total pod number per plant, seed number per pod and 1 000-seed weight; the most important character related with the yield character of B. juncea in western China was caulis character, followed by the branch character and pod character; yield characters, caulis characters, branch characters and pod characters of B. juncea in western China were closely correlated. [Conclusion] In order to improve the yield characters of B. juncea in western China, caulis characters should be focused on, followed by branch characters and pod characters; rapeseed varieties with high performance in total pod number per plant and effective pod number per plant should be chosen through the perspectives of effective branch number, plant height, pod number of main inflorescence, fruit stalk number of main inflorescence and other traits, while rapeseed varieties with high performance in seed number per pod and 1 000-seed weight should be chosen through the perspectives of beak length and other traits.