拮抗菌D67-2防治柑桔青绿霉病的效果

Effect ofthe Antagonist D67-2 (Pseudomonas sp. )on controling Citrus Penicillium rot

拮抗菌D67-2(Pseudomonas sp.)是从柑桔根系附生微生物中分离筛选的对柑桔青绿霉菌有拮抗作用的假单孢杆菌。用5×10~6、5×10~7和5×10~8个菌体/毫升3种浓度的拮抗菌D67-2悬浮液处理锦橙果实,采用聚乙烯薄膜袋单果包装。经100天贮藏试验表明,拮抗菌D67-2对青绿霉病的防治效果较好,浓度为5×10~8个菌体/毫升的处理效果与500ppm多菌灵相当;该拮抗菌处理对果实营养成分含量和外观内质没有不良影响。

The antagonist D67-2 (Pseudomonas sp. ) was screened from the epiphytes of citrus roots. Jincheng (Citrus sinensis Osbeck)fruits were treated by D67-2 suspension at concentrations of 5 × 10~6,5 × 10~7and 5 ×10~8 cells/ml, and then individually packed with polyethylene film bag, and storaged at room temperature for 100 days. It was found that D67-2 was effective on the control of citrus penicillium rot,and did not influence the nutrient components and edible quality of fruits,and the effectiveness of the suspension at concentration of 5 × 10~8 cells/ml could be comparable to that of 500ppm carbendazim.