Breeding Report on the New Soybean Variety Longdou 6 with High-protein and Disease-resistant Characters
To meet the domestic demand for soybeans and soybean products and to reduce the supply-demand gap for soybeans in China,breeding and promoting soybean varieties with high yield,broad adaptability,and disease resistance has become a top priority in soybean breeding.Longdou 6 is a new soybean variety bred by the Crop Research Institute,Gansu Academy of Agricultural Sciences through the sexual hybridization with the female parent Zhonghuang 12 and the male parent Handou 3.In the 2022 to 2023 Gansu soybean regional experiment,Longdou 6 achieved an average yield of 3 419.9 kg/ha,which was higher than that of the control variety.In the 2023 Gansu production experiemtn,the average yield was 3 196.4 kg/ha,which was 10.1% higher than that of the control variety Longdou 2.The crude protein content of the seeds is 459.7 g/kg and the ether extract content is 205.4 g/kg.Longdou 6 has good yield,strong adaptability,resistance to lodging,good field growth and defoliation,and is a high-protein variety.It is resistant to Mosaic virus disease and medium resistance to gray spot disease,which is suitable for planting in the middle-late maturing and late maturing soybean varieties type area in Gansu Province.
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