CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2021, Vol. 43 ›› Issue (6): 996-1005.doi: 10.19802/j.issn.1007-9084.2020362

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Identification, evaluation and improvement utilization of northeast China Soybean Germplasm Population in Jiamusi

Ji-liang WANG1(), Chun-mei ZONG2,3(), De-liang WANG1, Yan-ping WANG2, Hong-xin JIANG1, Dan-xia YANG1, Meng-meng FU3, Lei WANG3,2, Hai-xiang REN2, Tuan-jie ZHAO3, Wei-guang DU2(), Jun-yi GAI3()   

  1. 1.Institute of Crop Development of Heilongjiang Province Agricultural Reclamation, Jiamusi 154007, China
    2.Mudanjiang Branch of Heilongjiang Academy of Agricultural Sciences/Mudanjiang Experiment Station of the National Center for Soybean Improvement, Mudanjiang 157041, China
    3.Soybean Research Institute of Nanjing Agricultural University/Key Laboratory for Soybean Biology, Genetics and Breeding, Ministry of Agriculture and Rural Affairs/National Center for Soybean Improvement/National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing 210095, China
  • Received:2020-12-21 Online:2021-12-22 Published:2021-12-23
  • Contact: Wei-guang DU,Jun-yi GAI E-mail:wangjiliang1977@163.com;zongcm@126.com;weiguangdu@126.com;sri@ njau.edu.cn;weiguangdu@126.com


In order to accurately identify the phenotypic traits of the Northeast soybean germplasm population in Jiamusi, observe the performance of this population and study its potential breeding significance in Jiamusi. Using the Northeast China Soybean Germplasm Population composed of 361 local varieties and bred varieties in the Northeast region of China, the repeated inner grouping design experiment method was used to conduct accurate phenotypic identification of main agronomic traits in Jiamusi from 2012 to 2014. The results showed: 1) The average performance of the soybean germplasm population in Northeast China was 113.5 days (92.5-136.0 days), protein content 39.8% (35.6%-45.0%), oil content 21.5% (17.5%-24.2%), total protein-oil was 61.3% (57.4%-64.3%), the 100-seed weight was 21.1g (8.2-32.0g), the plant height was about 101.2cm (54.9-142.6cm), the nodes No. of main stem was 18.6 (12.4-24.6), and the branches was 2.5 (0.2-7.4), lodging 2.1 (1.0-4.0). 2) The local suitable maturity groups were MG0 and MGI, and the average value of each trait of these two maturity varieties was similar to the total average value of the population. The growth days of MG000-00 are concentrated at 95-110 days, which is about 15-25 days earlier than the local frost-free period; the oil content and total protein-oil was about 1 and 1.5 percentage points higher than MG0-I, respectively; the plant height and node number were about 10-40 cm and 2-8 nodes lower respectively. The growth days of MGII were as long as 150 days, and it can’t be stable and mature. Compared with local varieties, the protein and the total protein-oil were about 2% lower, and the oil is about 0.5% lower. The plant height and the number of nodes were about 10 cm and 2 nodes higher respectively; The degree of lodging is as high as level 3. MGIII could not mature normally in Jiamusi, and its growth and lodging degree increased. 3) According to the estimation of the genetic progress of various agronomic and quality traits in Jiamusi, although the oil and protein content is relatively lower, but they have certain potential to be improved. The Jiamusi region has bred many excellent varieties suitable for the northern part of the Northeast by using the soybean resources of the Northeast China, which reflects the important role of the Northeast germplasm. According to the performance of local varieties, excellent parents for improving different shapes were selected from the Northeast soybean germplasm population for reference by breeders.

Key words: northeast China soybean germplasm population, maturity group, agronomic and seed quality traits, genetic variation, breeding potential

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