大白菜萝卜胞质雄性不育系RC_7单株产种量构成因素分析  

Correlation Studies on Seed Yield Cytoplasmic Male-sterile (CMS) of Chinese Cabbage RC_7

作　　者：赵利民[1] 柯桂兰[1] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨凌712100

出　　处：《中国农学通报》2006年第7期393-397,共5页Chinese Agricultural Science Bulletin

基　　金：农业部重点科技项目"优质多抗丰产大白菜新品种选育"(96-002-03);陕西省科技攻关项目"蔬菜新品种选育("95K01-G8-01);西安市科技攻关项目"白菜;萝卜;菜薹新品种选育及其产业化"(NG200201);农业科技成果转化资金项目"秦杂大白菜新品种的繁育与生产示范"(05EFN216100284)资助。

摘　　要：应用线性回归和相关分析的方法,研究了新育成的大白菜萝卜胞质雄性不育系RC7的单株产量构成因素及其相关性,研究结果表明:不育系RC7的单株有效角果数(r=0.96583**)、二级分枝数(r=0.96419**)、每果粒数(r=0.75701**)、主花序有效角果数(r=0.49024*)及主花序有效长度(r=0.40623*)与单株产种量之间存在极显著或显著的正相关关系。在此基础上,建立了不育系RC7及其保持系单株种子产量的多元线性回归方程。在利用该不育系制种过程中,栽培管理上应以增加分枝数,尤其是二级分枝数,作为高产的主攻方向。Yield form factors and correlation on Chinese cabbage RC7 and remainder B7 were studied through application of linear regression and correlated analysis ways. Results of correlated analysis showed： the pod number of single plant of sterile tine RC7（r=0.96583^＊＊）, second branch number（r=0.96419^＊＊）, seed number per pod （r=0.75701^＊＊）, pod number on main inflorescence （r=0.49024^＊）, main inflorescence （r= 0.40623^＊） and single yield exists quite remarkable or remarkable positive correlation. Then multivariate linear regression equations about form factors of single plant seed yield between remainder B7 and Chinese cabbage sterile line were set up. Increase branch number especially second branch number is the major method to get high yield in seed production.

关 键 词：大白菜 胞质雄性不育系 产种量 构成因素 分析 

分 类 号：S634.1[农业科学—蔬菜学]