细菌SnebYK诱导大豆抗阿特拉津的效果评价  

Evaluation of bacterial strain SnebYK induced soybean against atrazine

作　　者：陈乐[1] 赵莹莹[1] 王媛媛[2] 朱晓峰[1] 陈立杰[1] 段玉玺[1] 

机构地区：[1]沈阳农业大学植物保护学院/北方线虫研究所,辽宁沈阳110866 [2]沈阳农业大学生物科学技术学院,辽宁沈阳110866

出　　处：《中国油料作物学报》2014年第5期641-647,共7页Chinese Journal of Oil Crop Sciences

基　　金：现代农业产业技术体系(CARS-04-PS13);农业部公益性行业科研专项(200903040-03)

摘　　要：除草剂阿特拉津易对大豆产生药害,细菌菌株SnebYK(Klebsiella pneumoniae)能够诱导大豆抗阿特拉津。选用50个不同地区的大豆品种进行验证,进一步确定细菌SnebYK对大豆抗性的诱导效果。结果表明:经过细菌SnebYK发酵液诱导处理的大豆能在阿特拉津有效成分500g/hm2的土壤条件下正常生长,地上部干物质积累量增加,株高、根长、地上部鲜重和地下部鲜重与未施用阿特拉津的对照无显著差异(P<0.05),冠部和根部的药害反应均在80%以上;开花结果未受影响,成熟期株高、豆荚数和百粒重与对照无显著差异(P<0.05)。说明细菌SnebYK能有效增加大豆对阿特拉津的耐性,经过SnebYK处理的大豆能在施用阿特拉津的环境下正常生长,这为大豆与玉米的轮作以及大豆田施用阿特拉津提供可能性。Soybean was sensitive to Atrazine [2- chloro- 4,6- bis-( ethylamino)- s- triazine],a widely used herbicide in agriculture. Previous study indicated that the bacteria Klebsiella pneumoniae strain SnebYK induced resistance to atrazine in soybean. 50 different soybean varieties were selected to investigate the effect of SnebYK on induced resistance. Results showed that soybean grown normally in the soil with 500 g /hm2atrazine( effective component) after SnebYK culture. Dry shoot weight of the soybean was higher than control. Plant height,root length,fresh shoot weight and fresh root weight were not significantly different from control. Injury response of shoot and root were both above 80%. Soybean blooming and fruiting were not affected by atrazine. During mature period,plant height,pod number per plant and hundred- grain weight were not significantly different from control.Results suggested that bacteria SnebYK could effectively improve soybean tolerance to atrazine,and made soybean- corn rotation available.

关 键 词：大豆 细菌 阿特拉津 伤害反应 诱导抗性 

分 类 号：S565.1[农业科学—作物学] S482.4