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Characteristics of the Chuandou No. 5 Soybean Variety

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(1) Variety origin: In 1988, the College of Agriculture of Sichuan Agricultural University used Xiangchun No. 10 as the female parent and the selected line G272 of Yaan white-haired soybean as the male parent for sexual hybridization. It was developed in 1994 using the modified bulk selection method. (2) Characteristics: An early-maturing spring soybean with a spring sowing growth period of 108 days, plant height 54.1 cm, 2.6 branches per plant, white flowers, gray hairs, determinate podding habit, compact plant type, brown mature pods, oval seeds, yellow seed coat, brown hilum, 100-seed weight 21.3 g,

(1) Variety origin: In 1988, the College of Agriculture of Sichuan Agricultural University used Xiangchun No. 10 as the female parent and the selected line G272 of Yaan white-haired soybean as the male parent for sexual hybridization. It was developed in 1994 using the modified bulk selection method.

(2) Characteristics: An early-maturing spring soybean with a spring sowing growth period of 108 days, plant height 54.1 cm, 2.6 branches per plant, white flowers, gray hairs, determinate podding habit, compact plant type, brown mature pods, oval seeds, yellow seed coat, brown hilum, 100-seed weight 21.3 g, sound seed rate 92.4%, protein content 45.2%, and fat content 19.7%. It has strong adaptability, resistance to viral diseases, resistance to lodging, and fairly good yielding ability.

(3) Yield performance: In the two-year provincial regional trial from 1995 to 1996, the average yield was 152.5 kg per mu, 25.5% higher than the control Gongdou No. 3; in the 1997 production trial, the average yield was 141.5 kg per mu, 21.2% higher than the control Gongdou No. 3.

(4) Cultivation points: For spring sowing, sowing from late March to mid-April is suitable, with 16,000 plants per mu; for autumn sowing, sowing before August 10 is suitable, with 25,000 plants per mu.

(5) Suitable planting areas: Suitable for planting in areas below 1500 m in altitude. It can be grown as field-edge soybean, in pure stands, or in intercropping and relay intercropping, and in areas with sufficient heat it can be grown as autumn soybean and as vegetable green soybean.

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