Abstract:

Zheqiu 6, a new autumn soybean cultivar, was developed by Institute of Crops and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, using conventional hybridization breeding methods. It was approved by the Zhejiang Provincial Committee for the Approval of Major Crop Varieties in 2023, with the approval number Zheshendou 2023005. This cultivar is characterized by high yield, strong resistance, and superior quality. Zheqiu 6 features elliptical seeds with yellow seed coats and brown hilums, and exhibits a determinate growth habit. Its average growth period is 100.7 d, with a plant height of 93.8 cm, 17.6 main stem nodes, 2.6 effective branches per plant, 51.6 effective pods per plant, 1.9 seeds per pod, and a 100-seed weight of 27.0 g. The grain contains 42.3% protein and 20.7% oil. For disease resistance, artificial inoculation tests showed that Zheqiu 6 was highly resistant to both SC15 and SC18 strains of soybean mosaic virus in 2021, and resistant to both strains in 2022; for anthracnose, it showed resistance in 2021 and moderate resistance in 2022. Regarding yield performance, Zheqiu 6 achieved an average yield of 191.2 kg per 667 m² in the 2021-2022 Zhejiang Provincial Regional Trials for autumn soybean, and 177.5 kg per 667 m² in the 2022 Zhejiang Provincial Production Trials for autumn soybean.

Key words: Zheqiu 6, soybean, yield, agronomic traits, quality traits, cultivation technique