甘兰根肿病菌生物学特性

西南大学学报（自然科学版）

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甘兰根肿病菌生物学特性

郭向华,肖崇刚,曾艳. 甘兰根肿病菌生物学特性[J]. 西南大学学报（自然科学版）, 2001, 23(1).

引用本文:

郭向华,肖崇刚,曾艳. 甘兰根肿病菌生物学特性[J]. 西南大学学报（自然科学版）, 2001, 23(1).

BIOLOGICAL CHARACTERISTICS OF PLASMODIOPHORA BRASSICAE[J]. Journal of Southwest University Natural Science Edition, 2001, 23(1).

Citation:

BIOLOGICAL CHARACTERISTICS OF PLASMODIOPHORA BRASSICAE[J]. Journal of Southwest University Natural Science Edition, 2001, 23(1).

摘要: 对甘兰根肿病菌生物学特性研究表明，该菌休眠孢子萌发的最适温度为24℃，最适pH值为6.0～6.7，致死温度为45℃，且光对孢子i萌发有明显抑制作用。该菌休眠孢子在感病寄主的根分泌物溶液中萌发率最高，达75，。此外，耐病甘兰品种及非十字花科番茄作物的根分泌物均能刺激其孢子萌发。
- 甘兰,芸苔根肿病菌,生物学特性
Abstract: The optimum temperature for the germination of dormant spores of Plasmodiophora brassicae was sbown to be 24℃ and the optimum pH was in the rawae of 6.0～6.7. The lethal temperature for the pathogen was45℃ and light had a marked inhihiting effect on the germination of the spores. The dormant spores of the fungus had the higbest germination percentage( 75% ) in the root exudate of the suaceptible host. The root exudate of a resistant cabbage variety or of tormato,whichis not a crucifer, showed stimnulating effect to the germination of the spores.