Acta Agriculturae Boreali-Sinica ›› 2024, Vol. 39 ›› Issue (S1): 125-134. doi: 10.7668/hbnxb.20194991

Special Issue: Oil crops Cultivation & Physiology

• Tillage & Cultivation·Physiology & Biochemistry • Previous Articles     Next Articles

Screening of Culture Conditions for the Identification of Nodulation Ability of Soybean-rhizobium Symbiosis

ZHAO Yuan1,2, LIU Zhi2, YANG Qing2, WANG Yu1, WANG Yanli1, YAN Long2, ZHANG Kai1, SHI Xiaolei2, LIU Xiaoyan3   

  1. 1 College of Agronomy and Biotechnology,Hebei Normal University of Science & Technology,Qinhuangdao 066004,China
    2 Institute of Cereal and Oil Crops,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang 050035,China
    3 Hebei Seed Station,Shijiazhuang 050031,China
  • Received:2024-07-23 Published:2025-01-24

Abstract:

In order to investigate the impact of different environments on the symbiotic nodulation ability of soybean-rhizobia and to screen suitable culture conditions for symbiotic nodulation,this study established 10 treatments based on 4 environmental factors(culture temperatures:22,26,30 ℃;culture substrates:vermiculite,vermiculiteand nutrient soil;inoculation periods:0 day post-inoculation,inoculation at 10 days;final bacterial concentration:OD600=0.5,OD600=0.9,OD600=1.3),resulting in 36 different culture conditions.Five nodulation-related phenotypes of soybean-rhizobia were measured under these conditions,including the number of nodules per plant,nodule dry weight per plant,nodule size,SPAD of leaf growth at 10 and 24 days post-inoculation(DPI).Principal component analysis,fuzzy mathematics membership function method,and cluster analysis were employed to comprehensively evaluate and classify the symbiotic nodulation ability of soybean-rhizobia under different conditions.A comprehensive evaluation system for the nodulation ability of soybean-rhizobia was established,and the optimal culture conditions were selected based on the comprehensive evaluation index D value.The results showed that culture temperature was the primary environmental factor influencing the symbiotic nodulation of soybean-rhizobia.The maximum values of the number of nodules per plant,nodule dry weight per plant,nodule size,SPAD of leaf growth at 10 and 24 days post-inocubion corresponded to culture temperatures of 30,26,26,30 and 26 ℃,respectively,under,different culture conditions.Under the culture conditions set,the optimal culture temperature for the symbiotic nodulation of soybean-rhizobia was 26 ℃.Multivariate linear regression analysis and grey relational analysis based on the comprehensive evaluation index D value indicated that nodule dry weight and nodule size had a strong correlation with the symbiotic nodulation ability of soybean-rhizobia,serving as important reference indicators for nodulation ability identification.The results of this study established a comprehensive evaluation system for the symbiotic nodulation ability of soybean-rhizobia,providing a theoretical basis for selecting phenotypes and culture conditions for nodulation ability identification.

Key words: Soybean, Rhizobia, Symbiotic culture, Nodulation ability, Comprehensive evaluation

Cite this article

ZHAO Yuan, LIU Zhi, YANG Qing, WANG Yu, WANG Yanli, YAN Long, ZHANG Kai, SHI Xiaolei, LIU Xiaoyan. Screening of Culture Conditions for the Identification of Nodulation Ability of Soybean-rhizobium Symbiosis[J]. Acta Agriculturae Boreali-Sinica, 2024, 39(S1): 125-134. doi: 10.7668/hbnxb.20194991.

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