A New Soybean Variety Guixia 3
Approval number: Guiyindou 2007001
Variety name: Guixia No. 3
Breeding unit: corn Research Institute of Guangxi Zhuang Autonomous region
Variety source: Gui M32 was bred by mixed selection method using Guangxi farm variety "Jingxi Qingpidou" as female parent and Wuming black bean as male parent.
Characteristics: growth period 108 days, medium maturity variety, limited pod setting habit, plant height 59.9 cm, medium height, main stem 14.7 nodes, branches 2.5, pods per plant 43.7, grain number per plant 78.8, grain weight per plant 11.1 g, 100 seed weight 17.6 g. Oval leaves, medium-large, furry sparse, close, purple flowers, brown hairs, pods brown, large, oval seeds, seed coat cyan glossy, large grains, navel light brown. The variety has good defoliation, strong adaptability and lodging resistance. analyzed by the Grain quality Supervision, Inspection and testing Center of the Ministry of Agriculture, crude protein 43.63%, crude fat 20.11%.
Yield performance: participated in and passed the seventh week summer soybean regional trial in Guangxi from 2003 to 2005, the average yield per mu in three years was 139.16 kg, 6.4% higher than that of the control Guixia No.1.
Key points of cultivation techniques: 1.3 ~ 18000 plants per mu are required for pure breeding, and about 10000 plants are suitable for interplanting. Medium ploughing, weeding and soil cultivation combined with topdressing seedling fertilizer: urea 5kg + potassium chloride 10kg per mu, or urea 5kg + compound fertilizer 15kg. If the plant growth is poor, you can apply fertilizer again at the flowering and pod stage.
Approval opinion: after examination, this variety meets the standard of soybean variety approval in Guangxi, and can be planted as summer soybean in the whole region.
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Improved Soybean Variety-Guixia No.2
Variety approval No.: Gui Shendou 2004003 breeding Unit: Guangxi Zhuang Autonomous region Maize Research Institute Variety Source: Guangxi farm variety "Fusui Huangdou" as female parent and "Gui 190" (Pingguodou × Qingren bird) as male parent, it was bred by sexual hybridization. Applicant: Guangxi Zhuang Autonomous region Maize Research Institute characteristics: this variety is an early-maturing summer soybean variety, the growth period is about 96 days. Limited podding habits, purple flowers, brown hairs, large leaves, ovoid. Plant height 55-65cm, number of main stem nodes 13-
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Propagation of improved varieties of soybean
Soybean is a self-pollinating crop, which often becomes worse due to mechanical mixing, bad climate and cultivation conditions, as well as natural hybridization and other reasons. Therefore, self-bred seeds should not be used for a long time and should be replaced every three years. Therefore, we must persist in purification and rejuvenation and do a good job in breeding in order to maintain the breed character of fine varieties. 1. Methods of purification and rejuvenation of soybean varieties (1) selection of strains the common methods of purification and rejuvenation of soybean are composed of three steps: single plant selection, strain identification and mixed high-fold propagation. Separate individual plant selection
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