4个不同地区十字花科根肿病菌生理小种鉴定及甘蓝新组合的抗性鉴定
- 西南大学园艺园林学院/重庆市蔬菜学重点实验室/南方山地园艺学教育部重点实验室,重庆,400716
摘要: 采用Willimas鉴别系统对采自重庆市涪陵区、四川省成都市新都区、云南省昆明市嵩明县、四川省攀枝花市盐边县的4份根肿病菌菌样进行生理小种鉴定，结果表明：4个地区生理小种分别为4号，11号，7号，7号。利用田间自然鉴定法在4号为优势小种的重庆市涪陵区发病区对79个甘蓝新组合进行了抗性鉴定，其中表现高抗、抗病、耐病和感病的分别有8，20，20，31个。从中选择8个具有抗性且经济性状较优良的组合进行室内接种鉴定，结果表明：甘蓝新组合GZ04，GZ09，GZ40，GZ76和GZ80为耐病杂种组合，GZ03，GZ19和GZ78为抗病杂种组合，其中GZ78表现为高抗。
Identification of Races of Plasmodiophora brassicae from Four Different Regions and Resistance Identification of New Cabbage Cross Combinations
- 西南大学园艺园林学院/重庆市蔬菜学重点实验室/南方山地园艺学教育部重点实验室,重庆,400716
Abstract: Williams identification system was used to identify the races of clubroot (Plasmodiophora bras‐sicae) in four different regions (Fuling District of Chongqing ,Xindu District of Chengdu in Sichuan ,Song‐ming County of Kunming in Yunnan and Yanbian County of Panzhihua in Sichuan) .The races were identi‐fied to be NO.4 ,NO. 11 ,NO. 7 and NO. 7 ,respectively .Then natural identification method in the field was applied and race No.4 ,which was the dominant race of clubroot in Fuling ,was used to test the resist‐ance of 79 cabbage cross combinations .Eight combinations were shown to be highly resistant to the dis‐ease ,20 were resistant ,20 were tolerant and 31 were susceptible .In addition ,8 excellent cross combina‐tions with good economic traits and resistance were inoculated with race No.4 in the laboratory .The result showed that GZ04 ,GZ09 ,GZ40 ,GZ76 and GZ80 were tolerant ,GZ03 and GZ19 were resistant ,and GZ78 was highly resistant to clubroot .
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