中国油料作物学报 ›› 2019, Vol. 41 ›› Issue (4): 537-.doi: 10.7505/j.issn.1007-9084.2019.04.008

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Analysis of the national summer soybean regional trials in Huang-Huai-Hai region during 2006-2017 #br#


  1. Henan Shangqiu Academy of Agriculture and Forestry Sciences, Shangqiu 476000, China
  • Online:2019-08-28 Published:2019-10-18


To summarize and to improve the summer soybean breeding, 12 years of the National Summer Soy? bean Regional Trials in Huang-Huai-Hai Region in 2006-2017 were analyzed especially on yield and agronomic traits changes. Results showed that yield level was improved obviously. Plant height, effective branches per plant, ef? fective pods per plant, seeds per plant, seed weight and 100-seed weight were all increased. Moreover, the overall trend of growth duration was decreasing. Bottom pod height decreased slightly. Crude protein increased slightly, crude fat decreased. A total of 20 lines reached the high crude protein standard, and 80 reached the high crude fat standard. The resistance level to SMV (soybean mosaic virus) was improved continuously, but the resistance level to SCN (soybean cyst nematode) was decreased obviously. It indicated complex correlations among the above traits, for example, yield had highly significant positive correlation with seed weight per plant and 100-seed weight, and had highly significant negative correlation with disease index to nematode SC7. Results of multiple regression, partial correlation and path analysis showed that the seed weight per plant had positive effect on yield, the number of nodes on main stem had negative effect on yield. In summary, it revealed that the seed weight per plant was the key factor on yield improvement in Huang-Huai-Hai region. It was recommended that parent with moderate nodes on main stem and higher seed weight per plant was required, and soybean quality and multi-biotic resistance were also im? portant.

Key words: summer soybean, regional trial, yield, agronomic trait, quality, resistance, evolvement