High efficient broad-spectrum Bradyrhizobium elkanii Y63-1  

作　　者：Piao Leng Fuxiao Jin Song Li Yi Huang Chanjuan Zhang Zhihui Shan Zhonglu Yang Limiao Chen Dong Cao Qingnan Hao Wei Guo Hongli Yang Shuilian Chen Xinan Zhou Songli Yuan Haifeng Chen 

机构地区：[1]Oil Crops Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Improvement of Oil Crops,Ministry of Agriculture and Rural Affairs,Wuhan,430062,China

出　　处：《Oil Crop Science》2023年第4期228-235,共8页中国油料作物学报(英文版）

基　　金：funded by Key Research and Development Plan Projects of Hubei Province(2022BBA0036);the National Natural Science Foundation of China(grant no.32071964)。

摘　　要：Soybean(Glycine max),the primary source of high-quality plant protein,plays a crucial role as a grain and oil crop in China.Harnessing the full potential of symbiotic nitrogen fixation in soybean production holds immense significance for agriculture and ecology alike.Zhongdou 63,a newly developed early-maturing summer soybean cultivar in 2021,exhibits remarkable traits such as high yield,superior quality,multi-resistance,and wide adaptability.In this study,eight distinct rhizobia strains from diverse regions were meticulously screened to identify highly effective strains specifically suited for Zhongdou 63.The aboveground biomass,plant height,chlorophyll content,root length,nodule number,and nodule dry weight of Zhongdou 63 were measured and the data were subjected to statistical analysis.The results demonstrated that Y63-1 is a predominant strain of Zhongdou 63.Subsequently,we conducted further investigations on the broad-spectrum nodulation characteristics of Y63-1.Ten representative soybean cultivars were individually inoculated with Y63-1 and subsequently analyzed for nodule numbers and nodule dry weight in their symbiotic systems with rhizobia.The findings revealed that Y63-1 effectively formed nodules with all ten soybean varieties tested.In summary,our current study identified highly efficient broad-spectrum Bradyrhizobium elkanii strain Y63-1 as the predominant strain in Zhongdou 63 and provided a theoretical foundation for enhancing yield potential not only in Zhongdou 63 but also in other varieties through inoculation with highly efficient rhizobia in production.

关 键 词：Soybean RHIZOBIUM Nodule symbiosis NODULATION Broad spectrum 

分 类 号：S565.1[农业科学—作物学]