Chuandou No. 4 (soybean)
(1) Variety source: it is selected by Sichuan Agricultural University.
(2) characteristics: the whole growth period is 102 days, anti-virus. Moderate plant height, purple flowers, brown antler, compact erect plants, limited pod habits, mature pods brown, sickle-shaped, seeds with orchard shape, navel brown, seed coat yellow.
(3) yield performance: the average yield per mu in the provincial regional test was 141.0 kg in 1993, 22.08% higher than that of the control (dwarf earlier), 121.7 kg per mu in 1994, 11.45% higher than the control, 144.7 kg per mu in the production test, 25.17% higher than the control, 91.5% higher than the control, 5.7% higher than the control, 100 grains weighed 21.6g, 4.2g higher than the control, and the protein content was 50.7%. Fat 18.6%, 1.6% and 0.68% higher than the control, respectively.
(4) suitable planting area: suitable for planting in areas below 1500 meters above sea level in our province.
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Chuandou No. 5 (soybean)
(1) Variety source: in 1988, the College of Agriculture of Sichuan Agricultural University used Xiangchun 10 as female parent and Ya'an white edamame bean line G272 as male parent for sexual hybridization. It was bred in 1994 by improved mixed selection method. (2) characteristics: early spring soybean, spring sowing growth period 108 days, plant height 54.1 cm, plant branches 2.6, white flowers, gray hairs, limited fruiting habits, compact plant type, mature pods brown, seed oval shape, seed coat yellow, seed navel brown, 100-grain weight 21.3 grams.
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Chengdou 9 (soybean)
(1) Variety source: Chengdou 9 was bred by crop Institute of Sichuan Academy of Agricultural Sciences in 1988 with Ajiaozao as female parent and Lei Lian (introduced from Japan) as male parent. (2) characteristics: the plant is about 50 cm tall, the leaves are oval, the flowers are white, the mature pods are brown, the seeds are oval, the seed coat is yellow, the navel is brown, and the weight of 100 seeds is about 21 grams. This variety is an early-maturing spring soybean variety with limited pods, suitable for spring sowing, and can also be planted in summer and autumn.
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