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Introduction to the characteristics of the Tongnong No. 12 soybean variety

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"Tongnong No. 12" is a new high-protein soybean variety bred by the Crop Institute of the Tonghua Academy of Agricultural Sciences. In March 2000, it was approved by the Jilin Provincial Crop Variety Approval Committee and named "Tongnong No. 12." Its protein content is 44.83%, and its fat content is 19.28%. 1. Characteristics "Tongnong No. 12" plants are 85 cm tall and have a determinate podding habit. Lanceolate leaves, dark green leaf color, gray pubescence. The main stem has 17 nodes, belongs to the multi-branching type, and the plant form is compact. Pods turn dark brown when mature. Seeds are round, with yellow seed coat, yellow hilum, and glossy seeds.

"Tongnong No. 12" is a new high-protein soybean variety bred by the Crop Institute of the Tonghua Academy of Agricultural Sciences. In March 2000, it was approved by the Jilin Provincial Crop Variety Approval Committee and named "Tongnong No. 12." Its protein content is 44.83%, and its fat content is 19.28%.

1. Characteristics "Tongnong No. 12" plants are 85 cm tall and have a determinate podding habit. Lanceolate leaves, dark green leaf color, gray pubescence. The main stem has 17 nodes, belongs to the multi-branching type, and the plant form is compact. Pods turn dark brown when mature. Seeds are round, with yellow seed coat, yellow hilum, glossy seeds, and a 100-seed weight of 17 grams.

Its indicators for lodging resistance, virus disease resistance, and pod borer resistance are all superior to the control variety "Changnong No. 4," and its quality is rated as excellent.

The growth period of "Tongnong No. 12" from emergence to maturity is 130 days and requires an effective accumulated temperature of 2650°C, making it a mid-late maturing variety.

2. Suitable range "Tongnong No. 12" is suitable for planting in areas of eastern Jilin Province and northeastern Liaoning Province with a frost-free period of more than 130 days.

3. Cultivation points "Tongnong No. 12" should be cultivated with sparse planting. In plots with below-medium fertility, the suitable density is 133,000 plants per hectare, that is, 60 cm row spacing, 25 cm plant spacing, with two seeds per hole; in plots with medium fertility or above, the suitable density is 60 cm row spacing and 30 cm plant spacing.

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