摘要
通过盆栽试验对转DREB基因大豆东农50与非转基因大豆东农50进行正常水分处理和干旱胁迫处理,研究转基因大豆在干旱条件下对土壤氮素转化相关细菌数量及生化强度的影响。结果表明,干旱条件下转DREB基因大豆在开花期对根际好氧性自生固氮菌的生长及土壤固氮强度有促进作用,在开花期和结荚鼓粒期对氨化细菌繁殖及氨化强度有抑制作用,在此时期对反硝化细菌的生长繁殖及其强度有抑制作用,在整个生长周期内转基因大豆对硝化细菌数量及其强度没有影响。
In this study,the transgenic soybean ＂Dongnong 50＂ and soybean ＂Dongnong 50＂ were planted under normal soil water condition and drought stress condition to study transgenic soybean＇s effect on the amount of nitrogen transforming bacteria and their corresponding biochemical intensity.The results showed that the number of aerobic azotobacter and the intensity of nitrogen fixation increased in the rhizosphere of transgenic soybean under drought stress treatment at the flowering stage.The number of the ammonification bacteria and the intensity of ammonification decreased while the number of denitrifying bacteria and the intensity of denitrification decreased.The number of the nitrifying bacteria and the intensity of nitrification were not affected during the whole growth period.
出处
《作物杂志》
CAS
CSCD
北大核心
2011年第5期22-26,共5页
Crops
基金
国家转基因生物新品种培育重点项目(2009ZX08011-023B)
