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Introduction to the Root Characteristics and Structure of Soybean
The root system of soybean is a taproot system. It is divided into a main root and lateral roots, and both the main root and the lateral roots are densely covered with root hairs. The main part of the root lies 5-20 cm deep in the soil, and the whole root system is roughly bell-shaped. On soybean roots, rhizobia live in symbiosis with the soybean. When the soybean germinates, the rhizobia invade the root, and when the soybean grows its first compound leaf, root nodules have formed on the soybean roots, first on the main root and then gradually spreading to the lateral roots. The root nodules are produced through the action of rod-shaped rhizobia that have 1-2 flagella at one end. They are aerobic bacteria, mainly growing on the root system near the soil surface
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Introduction of new soybean varieties for farmers' reference in seed selection
Xinfeng No. 1 was developed by the Agricultural Technology Extension Station of Hongmiaozi Township, Xinbin County, through sexual hybridization and selection using Chang No. 4 as the female parent and Qunxuan No. 1 as the male parent. It was approved by the Crop Variety Approval Committee of Liaoning Province in December 2002. The variety has a growth period of 121 days and belongs to the early-maturing group. The average plant height is 94.7 cm, with a semi-determinate podding habit and 17.9 nodes on the main stem. The stems are thick and tough, the root system is well developed, and it is lodging-resistant. The leaves are round, the pubescence is gray, and the flowers are white. The pods are grayish-brown, with 59.9 pods per plant, and many pods contain 3-4 seeds. The seeds are yellow with a yellow hilum,
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AM89-9 Soybean Variety Introduction and Main Characteristics
AM89-9 soybean was developed in 1989 by sexual hybridization from flat-stem soybean. After 10 years of breeding, trial planting and strict purification and rejuvenation selection, it stood out in the soybean kingdom and became a pearl in the soybean kingdom. Since its promotion in 1996, it has consistently won people's affection and is called "the king of kings among soybeans". Characteristics: growth period 115-120 days, 100-seed weight 20-21 grams (100-seed weight of foundation seed 18-19 grams). Plant height 100 cm. Pods are mainly set on the main stem, which generally has 22-25 nodes, with an average internode length of 4-6 cm. Pod-setting position is low, apical dominance is strong, average pods per plant 130, tolerant of continuous and repeated cropping, strong stress resistance, good yielding ability. Yield performance: on plots with good fertilizer and water conditions, yield per mu can reach 550-600 jin. In 1996, in Chentun Village, Dashi Township, Beining City, it reached as high as 598 jin. Adaptation range: Liaoning, Jilin and southern Heilongjiang. Areas with fertile soil are best. Cultivation points: seeding rate 3-4 kg per mu. In Liaoning, this variety is generally sown in early May, and sparse planting is advisable, with a plant spacing of 10-13 cm. It likes fertilizer and water; apply 20,000-30,000 jin of farmyard manure per hectare as base fertilizer, with N:P:K at 4:10:6. During the growth period, hoe and ridge in time, and spray chlormequat to control plant height at about 1 m.
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Introduction to the jp96-10 soybean variety
Characteristics: Growth period 120-125 days, plant height 80-90 cm, 100-seed weight 23-24 g (100-seed weight of foundation seed 21 g). It is a strongly branching type, usually with 7-9 branches, up to 12. The root system is well developed and its nitrogen-fixing ability is strong. Flowers and pods are especially dense, with an average of 240 pods per plant and a maximum of 819. It has strong adaptability, is especially salt-alkali tolerant, highly resistant to downy mildew, and strongly resistant to lodging. Yield performance: The general yield per mu is 550 jin, with the potential to increase to 600 jin per mu. In 1997
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Introduction to the MD6 Premium Soybean Variety and Analysis of Its Characteristics
MD6 Premium Soybean is a newly bred ultra-high-yield, dual-purpose fresh-eating variety from the Beijing Fengda Agricultural Science Institute. After two consecutive years of multi-point comparative trials in Guantao County, it generally yields about 300 kg per mu, with high-yield fields reaching 350 kg, an increase of more than 50% over ordinary local varieties. Moreover, this variety has large pods, many seeds per pod, and large seeds, making it especially suitable for sale as fresh edamame. MD6 Premium Soybean has a growth period of about 100 days, belongs to the determinate podding habit, has a plant height of 70--80 cm, and 3-- per plant branches
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px96-18 Soybean Variety Introduction
Characteristics: Growth period 115-120 days, 100-seed weight 22-23 grams (original seed 100-seed weight 20 grams). Plant height 90-100 cm. Main stem pods predominate, average node number 19-23, internodes relatively short, dense podding, strong apical dominance, mostly three- and four-seed pods. Well-developed root system, strong stalk, lodging resistant. Adaptation range: Liaoning, Jilin and southern Heilongjiang regions. Yield performance: Generally over 550 jin per mu, with the potential to increase to 600 jin per mu. In 1997, in Wangtun Village, Futun Township, Beining City, it reached as high as 5
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Introduction to the Characteristics and Traits of the Cangdou No. 4 Soybean Variety
Cangdou No. 4 was bred by the Cangzhou Academy of Agricultural Sciences of Hebei Province, and was approved by the National Crop Variety Approval Committee in 2000. Characteristics and traits: This variety has a growth period of 92-94 days and is an early-maturing summer-sown type. Plant height is 75-80 cm, the main stem has 15-16 nodes, pod-setting height is 10-15 cm, there are 1-15 branches, and 35 effective pods per plant. Round leaves, purple flowers, brown pubescence, semi-determinate pod-setting habit, deciduous. Seeds are round, the seed coat is yellow and glossy, with a dark brown hilum. Suitable areas: suitable for planting in the summer soybean production areas of Hebei, Shandong, and Shan
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Introduction to the Characteristics and Traits of the Chengdou No. 6 Soybean Variety
(1) Variety source: An early-maturing spring soybean variety bred by the Crop Research Institute of the Provincial Academy of Agricultural Sciences. (2) Characteristics and traits: The growth period is about 103 days, 5 days later maturing than the control Aijiaozao. Plant height is about 55 cm, with determinate pod-bearing habit, lanceolate leaves, white flowers, gray hairs, brown mature pods, elliptical seeds, yellow seed coat, brown hilum, and 100-seed weight of about 17 g. The seed protein content is 45.7%, and the fat content is 19.61%. It mainly shows long pods and many seeds, with 2.2-2.6 seeds per pod. It is resistant to viral diseases.
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Introduction to the Soybean Variety Chengdou 7 (8601-4)
(1) Variety origin: This line was developed by the Sichuan Academy of Agricultural Sciences in 1986 by crossing Baiqiancheng as the female parent with Chengdu Tiankan Dou as the male parent, followed by generation-by-generation directional selection. (2) Characteristics: This variety is a medium-maturing spring soybean variety, with a spring sowing growth period of about 120 days. It has a determinate podding habit, white flowers, and gray pubescence. The seeds are large (100-seed weight about 26 g), nearly round, with yellow seed coats and yellow hila. The rate of fully developed seeds is relatively high, the protein content is 43.5%, and the fat content is 20.7%. It has good yield potential, excellent quality, resistance to mosaic virus disease, and strong lodging resistance.
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Introduction to the Characteristics of the Soybean Variety Chengdou No. 8
(1) Variety source: Chengdou No. 8 (formerly coded 8407-1) was developed by the Crop Research Institute of the Sichuan Academy of Agricultural Sciences through crossbreeding of Chengdou No. 4 and (Rongjing) badouzi. (2) Characteristics: An early-maturing spring soybean variety, it can also be planted in summer and autumn. The growth period for spring sowing is about 105 days, plant height is 40 cm, it has strong virus resistance and lodging resistance, the white grain weight is about 18 g, and the seeds contain 44.4% protein and 20.2% fat. (3) Yield performance: The three-year provincial regional trial average from 1994-1996
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