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影响大白菜霜霉病抗性鉴定的因素
引用本文:程永安,柯桂兰.影响大白菜霜霉病抗性鉴定的因素[J].西北农业学报,1995,4(4):69-72.
作者姓名:程永安  柯桂兰
作者单位:陕西省农业科学院蔬菜研究所, 杨陵712100;陕西省农业科学院蔬菜研究所, 杨陵712100
摘    要:以陕西关中地区十字花科作物上的霜霉病菌为苗源,采用苗期人工喷雾接种等方法,三究了接种液的有效笥、寄主苗龄、不同源的病原菌等因素对大白菜抗病性鉴定的影响,结果表明:①孢子囊的来源和接种液制备时间直接影响接种液的有效性;②大白菜陶蝗感白菜源的霜霉病菌外,还易感甘兰长甘和萝卜源的病菌,增加了抗病鉴定的难度;③大白菜不同生长阶段存在抗病性变化,因此苗期人工接种鉴定有一定局限性。

关 键 词:大白菜  霜霉病  鉴定  影响因素  抗病性
收稿时间:1994/12/21 0:00:00
修稿时间:1995/3/25 0:00:00

FACTORS AFFECTING EVALUATION OF CHINESE CABBAGE RESISTANCE TO DOWNY MILDEW
Chen Yongan and Ke Guilan.FACTORS AFFECTING EVALUATION OF CHINESE CABBAGE RESISTANCE TO DOWNY MILDEW[J].Acta Agriculturae Boreali-occidentalis Sinica,1995,4(4):69-72.
Authors:Chen Yongan and Ke Guilan
Institution:Institute of Vegetable Shaanxi Academy of Agricultural Sciences, Yangling 712100;Institute of Vegetable Shaanxi Academy of Agricultural Sciences, Yangling 712100
Abstract:This paper was dealed with the effect of host seedling age,pathogens from different hosts, and efficiency of spore supension on the evaluation of resistance to downy mildew in Chinese cabbage.The results showed that Chinese cabbage disease resistance was varied with different growing stages, and the reliability of identification in seedling is poor;the efficiency of spore suspension was affected direct1y by spore sac source and preparation time of spore suspension;the Chinese cabbage was susceptible to the downy mildew from cabbage and radish besides that from Chinese cabbage.
Keywords:Chinese cabbage  Downy mildew  Affecting factors  Resistance evaluation
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