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Insect-resistant cotton varieties
Lumianyan 16 is a new conventional insect-resistant cotton variety that was jointly developed by the Shandong Cotton Research Center and the Institute of Biotechnology of the Chinese Academy of Agricultural Sciences. In May 2001, it was approved by Shandong Crop Variety Approval Committee. 1. High-yield and stable production In the production test of Shandong Province in 2000, lint and pre-frost lint yielded an average of 7.0% and 9.2% more than Zhongmian 29 respectively. In 2000, in the national Yellow River Basin Bacterial Cotton Regional Test, the average pre-frost lint was the same as the hybrid Zhongmiansuo 29, and in 2001 the yield was increased by 7.4% compared with the hybrid Zhongmiansuo 38, and the production test increased by an average of 11.4. %. The cotton center carried out 4 pilot tests for two years, and the lint yield increased by an average of 17.5% compared with Xinmian 33B. The variety has high yield potential and wide adaptability. 2. Resistant to disease and insect resistance The variety is highly resistant to Helicoverpa armigera, and the provincial test was conducted. The insect resistance was equivalent to that of the control Zhongmiansuo 29; the disease pool was identified, and high resistance to wilt disease, disease index was 8.1; Wilt is good, the disease refers to 25.7. 3. The fiber quality is excellent Provincial pilot test averages for two years. The 2.5% fiber span length is 28.7 mm, the specific strength is 20.7 cN/tex, and the micronaire value is 4.6, which is equivalent to control Zhongmiansuo No. 29. 4. Precociousness is good. The height of the bell coat is 132 days in the whole growth period of the variety. It is a medium-early-maturing variety and is suitable for the live broadcasting of spring in Shandong and Yellow River valleys or spring planting with other crops. In the two-year average of provincial trials, the boll weight was 5.67 grams and the number of clothes was 39.73%. 5, easy to cultivate and manage This species has better emergence, early and medium-term plant growth is faster, easy to put up high-yield shelf, strong bell strength, flowering and boll concentration, bolling smooth, if fertilizer is appropriate, the upper, middle and lower bell evenly , Premature not premature aging. The plant type is semi-compact and has few sprouts and is easy to manage. 6. Suitable planting areas are suitable for live spring and spring planting in the cotton fields of the Yellow River Basin. Lu Mianyan No. 17 Lumianyan No. 17 is a new breed of conventional insect-resistant cotton recently selected by Shandong Cotton Research Center. This breed has the following characteristics: 1. High-yield, stable production 1999-2000 to participate in regional trials in Shandong Province, the average annual yield of 95.3 kg lint, 88.95 kg of pre-frost lint, respectively, than the control of insect-resistant hybrid cotton No. 29 increased production by 5.77% and 6.78%. In 2001, it was put into production trials. The average of six trials was 121.5 kg of lint per mu, and 116.8 kg of lint before frost, which was 21.6% and 23.7% higher than the control Xinmian 33B. As a conventional insect-resistant cotton variety, Lumianyan 17 had a higher yield of ginned cotton than the control insect-resistant hybrid Zhongmian 29 for two consecutive years, which was more than 20% higher than the American variety Xinmian 33B, demonstrating its high yield. 2. Strong resistance to disease and insect resistance The variety is highly resistant to Helicoverpa armigera, and the test results were confirmed by the provincial test. The insect resistance is equivalent to that of the control No. 29 in cotton; the identification of disease pool is high resistance to wilt disease and verticillium wilt resistance. 3, the fiber quality is excellent Provincial pilot two-year regional test average, 2.5% fiber span length 29.5 mm, specific strength 22.5Cn/tex, micronaire value 4.7, three indicators with a good match. 4. Premature high-yield provinces Each province has a two-year average for regional trials. The whole growth period is 129 days, and the pre-frost rate is 93.3%. It is a medium-early-maturing variety and is particularly suitable for spring planting in the southwestern Shandong and Lubei. Cotton planted in spring. 5, easy to cultivate and manage the varieties of clothing points high, the average regional test was 42.2%, but the emergence of a better, early and mid-plant growth, easy to put up high-yield shelf, strong bell, flowering and ringing concentrated, bell Weight 5.43 grams, medium size. Its outstanding feature is that the plant type is more compact, with few axillary buds, and it is easy to manage. It only needs to go to the leaves and to top it on time. 6. Suitable planting areas are suitable for live spring and spring planting in the cotton fields of the Yellow River Basin. Lu Mianyan No. 18 Lu Mianyan No. 18 (former Lu 25 Series) is a new breed of insect-resistant cotton newly developed in Shandong Cotton Research Center. I. Characteristics Lu Mianyan No. 18 is a mid-maturing variety. The whole growth period is from 130 days to 132 days. The variety has good seedlings, and the early growth is moderate. In the middle and late periods, it grows strong, does not have premature aging, and the leaves are dark green and strong in bell. Bell speed is fast, evenly distributed in the middle and lower, the bell shell is thin, and the boll opening is smooth. In the two-year regional trial, the average boll weight was 5.58 grams, 38.5% for clothes, and 10.7 grams for children. Second, resistance to the resistance of this species high resistance to cotton bollworm, and stable resistance. From 1999 to 2000, it was identified as the most prominent first species resistant to cotton bollworm. In the second year of the outbreak of the second generation of cotton bollworm in 2000, Lumianyan 18 was planted in Xiajin, Linqing, Huimin, Heze and other cotton regions. They all showed outstanding resistance to cotton bollworm, which was significantly better than that of local production 33B. And other insect-resistant cotton varieties. High resistance to wilt disease, resistance to verticillium wilt. Lu Mianyan No. 18 was tested and demonstrated. It also showed strong drought resistance, salt and alkali resistance, and it has good resistance to stem blight of red leaves at the later stage. 3. High-yield production In the provincial production test in 2001, the average cotton seed cotton at six points was 300.6 kg/mu; the average lint cotton and pre-frost lint cotton was 114.1 kg/mu and 106.6 kg/mu, which was an increase of 14% over the control 33B. 2% and 12.9%, significant increase in production. In the province's main cotton producing area, more than one demonstration planting, the general average level is above 100 kg/mu lint, and the small area high yield above 150 kg/mu lint, showing outstanding high yield levels. Fourth, the fiber quality Integrated cotton test center of the Ministry of Agriculture several years of fiber test results, 2.5% span length 29.0 mm above, than the intensity of 24gf/tex, micronaire value of 4.6 to 5.0, especially than The strength exceeds that of the anti-insect cotton variety 33B in the current production promotion, and also exceeds the 5 new varieties newly approved in 2001 in Shandong Province. The fiber quality of the variety has a strong competitive advantage to meet the needs of the domestic textile industry for high-quality cotton, and to increase the ability of China's raw cotton export to earn foreign exchange after China's accession to the WTO. V. Suitable planting areas are suitable for spring planting in the cotton fields of the Yellow River Basin.