棉花黄萎病抗病性鉴定新方法探讨  

A New Method for Testing Cotton Resistance to Verticillium dahliae

作　　者：戴广辉[1] 刘俊芳[2] 李延增[1] 刘克明[2] 魏建昆[2] 

机构地区：[1]河北省农科院棉花研究所 [2]河北省农科院农业物理生理生化研究所

出　　处：《华北农学报》1989年第4期92-97,共6页Acta Agriculturae Boreali-Sinica

摘　　要：测试了12个具有不同抗性的棉花品种根冠细胞对棉花黄萎病毒素的敏感性,以孢子悬浮液苗期接种和毒素醮根为对照.试验结果表明,供试品种的根冠细胞死亡率与苗期接种病指和幼苗萎蔫指数均呈正相关,相关系数分别为0.719与0.816,试验证明,利用离体根冠细胞对毒素的敏感差异鉴定品种抗性,操作简便,结果可靠,适于大批量鉴定.The sensitivity of root cap cells of twelve cotton varieties to toxin produced by Verticillium dahliae had been tested. The results were compared with the disease index of seedlings inoculated with V. codidia and the wilt index of seedlings immersed in the toxin. The experimental results showed that death rate of root cap cells treated with toxin was highly correlated with the disease index and the wilt index. The coefficients of correlation were 0.719 and 0.816 respectively. The results indicated that large-scale screening for resistance to V dahliae can be accomplished accuratel yand rapidly by using this method.

关 键 词：棉花 黄萎病 抗病性 鉴定法 

分 类 号：S562.034[农业科学—作物学]