摘要： 2,4 二乙酰基藤黄酚(2,4 DAPG)产生菌是荧光菌对土传病害进行生物防治的主要类群之一。室内筛选结果表明:供试的12个2,4 DAPG产生菌菌株对番茄青枯病菌均有不同程度的抑制作用,其中CPF10抑菌效果最佳,抑菌带宽为3.5mm;而2P24、5J10次之,抑菌带宽为3.0mm。CPF10和2P24培养原液对番茄胚根的生长均有明显的抑制作用。CPF10和2P24根部定殖结果表明,两菌株均可在番茄幼苗根部大量定殖,根表细菌数量随着时间延长呈下降趋势但仍维持较高数量;而根内细菌数量有明显上升的趋势。CPF10和2P24对番茄青枯病均有一定的防治效果,其中2P24的防治效果最好。而CPF10在所有的处理中变异系数(CV)最小,防治效果最稳定。
关键词:
2,
-二乙酰基藤黄酚产生菌,
番茄青枯病,
定殖,
防效
Abstract: Preliminary explorat ion of the bacteria that produce 2, 4-DAPG colonize the rhizoplane and cont rol tomato southern bacterial w ilt, it is know n that 12 offering stains had different effect on pathogent ic bacter-i um, CPF10 was the best among all treatment s in cont rolling the pathogenic bacterium. Fermented broths of st rains CPF10 and 2P24 had considerable inf luence w ith vig or of tomato seed g ermination and grow th of corcule , culture stock of st rain CPF10 affected them deep. Bacteria strains 2P24 and CPF10 colonized the rhizoplane. In g reenhouse ex periments, 2P24 was the best among all treatments in cont rolling the disease, w hile variation coeff icient of CPF10 w as the smallest in all the t reatment s, so controlling ef fect of CPF10 w as the most stable.
Key words:
Bacteria producing 2, 4-DAPG,
Tomato southern bacterial w ilt,
Vigor of g ermination,
Colonizat ion,
Controlling effect
中图分类号:
周洪友, 刘正坪, 胡俊, 张俊祥, 唐文华. 2,4-二乙酰基藤黄酚产生菌在番茄根部的定殖及对番茄青枯病的防治[J]. 华北农学报, 2004, 19(4): 105-108. doi: 10.3321/j.issn:1000-7091.2004.04.029.
LIU Zheng-ping2, HU Jun2,ZHANG Jun-xiang2,TANG Wen-hua. Preliminary Exploration of Bacteria That Produce 2,4-DAPG Colonize the Rhizoplance and Controll the Tomato Southern Bacterial Wilt[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2004, 19(4): 105-108. doi: 10.3321/j.issn:1000-7091.2004.04.029.