GK22 (National Insect-resistant Cotton No. 22) is a new type of monovalent transgenic cotton with high quality, high yield, resistance to wilt disease and resistance to verticillium wilt, created by Nantong Genesis Transgenic Seed Co., Ltd. (formerly the subject of breeding transgenic insect-resistant cotton in Jiangsu Province Group) undertook the national "863" plan and was systematically selected from "863" genetically modified materials. It was approved by the Jiangsu Provincial Crop Variety Approval Committee in November 2000. It was the first genetically modified insecticide resistant insecticide in Jiangsu Province. Cotton varieties. Yield Performance GK22 In 1998 and 1999, the national joint trial of cotton-resistant cotton yielded 207.31kg of seed cotton and 80.9kg of lint per mu, which was 8.42% and 1.44% higher than that of the Ganmian 3. In the 2000 production test, the yield per mu was 243.34 kg and 98.88 kg, which increased by 11.98% and 6.46% compared with the control Qinmian 3. Features GK22 plant height about 110cm, plant tower shape, high resistance to cotton bollworm and red bollworm, resistance to wilt disease, resistance to verticillium wilt. The stalks are hard, uniform from top to bottom, the surface of the sun is light purple, the back is light green, and the stem hair is thin and short. The plant is sparsely clear and has good ventilation and light transmission. The leaves are medium in size, lacking depth, and light green leaves. The first fruiting branch has a height of 17-20cm, the fruit branch length is 45-55cm, and the main stem has an included angle of 50°. about. The fruit branch is generally 17 sets, the first fruit branch is about 12cm long and the fruit section is four or five. The bell is strong, the bell inside is more, the length of the bell is about 3cm, the lobe is deep and incomplete. The length of the velvet is 32mm, the boll weight is 5.72g, the clothing content is 42.5%, the clothing index is 7.1%, and the seed is 9.8g. The bell has an oval mouth and is mostly 5 rooms. Boosting, large flowers, easy to pick flowers. Flesh white, shiny, little bells. According to the inspection of the Cotton Quality Supervision, Inspection and Testing Center of the Ministry of Agriculture, Guokuo No. 22 fiber has a 2.5% crossover length of 28.5mm, a 50.6% uniformity ratio, a strong ratio of 24.3, a micronaire value of 4.1, and an air-spinning index of 2022, reaching a Class A standard for high-quality cotton. . The whole growth period is about 140d. The cultivation points were GK22 coated seed, nutritious seedlings, and 2 capsules. It is generally planted along the rivers and coastal areas in early April and transplanted in late May. 7-10d before transplanting to uncover the seedlings. The cotton field should be applied with base fertilizer, mainly organic fertilizer, and nitrogen, phosphorus and potassium should be used together. It is advisable to plant 2500-2800 mu per mu, and plant 1200-1200 per mu for three-dimensional planting cotton fields. Seedlings at the seedling stage were treated with nitrogenous fertilizer to promote tree growth, and when flowering and bolling stage had two big peaches, the flower and bell fertilizer was reapplied. Timely top cover fertilizer, so that the upper fruit branch elongation and more knot peach. In general, the total amount of pure nitrogen in the Mushi field is about 15kg. The total amount of active ingredients used in the treatment of mu is 6-8g, which is applied twice in late June and at the end of July. In the year of the occurrence of cotton bollworm, three or four generations of prevention and treatment met the control once. For pests that are not resistant to blind ticks, roundworms, etc., they must be treated promptly to prevent harm.
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