Two new cotton varieties Lu rh-2

Approval number: Lunong trial No. 2006031.

Breeders: Luyou Cotton Research Institute of Jiyang County, Institute of Biotechnology of Chinese Academy of Agricultural Sciences.

Variety source: K321 (selected from Shiyuan 321) / (S45/GK12) F1.

Characteristics: hybrid varieties of transgenic insect-resistant cotton. The seedlings emerged quickly, the seedlings grew steadily, and grew strongly in the middle and later stage. The growth period is 129 days, the plant height is 106 cm, the plant is tube-shaped, the leaf is medium, the leaf color is dark green, the first fruit branch node is 7.0, the fruit branch number is 13.8, the boll per plant is 20, the boll weight is 6.5 grams, the pre-frost lint percentage is 39.3%, the seed finger is 11.7 grams, the pre-frost flower rate is 91.9%, and the inflorescence rate is 6.0%. From 2003 to 2004, it was tested by the Cotton quality Supervision, Inspection and testing Center of the Ministry of Agriculture (HVICC): fiber length 31.3mm, uniformity 85.6%, specific strength 28.5cN/tex, micronaire value 4.5, spinning evenness index 147.4. Resistance identification of Shandong Cotton Research Center in 2005: susceptible to Fusarium wilt, resistant to Verticillium wilt and resistant to cotton bollworm.

Yield performance: in the provincial cotton regional test from 2003 to 2004, the average yield of seed cotton, pre-frost seed cotton, lint cotton and pre-frost lint cotton was 247.17 kg, 227.38 kg, 99.8kg and 91.31kg respectively, which was 12.88%, 10.77%, 14.8% and 11.8% higher than that of Zhongmiansuo 29, respectively. In 2005, the production of test seed cotton, pre-frost seed cotton, lint cotton and pre-frost lint produced an average of 254.4 kg, 241.6 kg, 98.4 kg and 93.1kg respectively, which increased by 4.0%, 3.6%, 1.9% and 1.2% respectively over the control Lumianyan 15.

Key points of cultivation techniques: applying sufficient base fertilizer and increasing organic fertilizer and potash fertilizer. Suitable sowing time, direct seeding around April 20, nutrition bowl seedling raising at the end of March and the beginning of April. The suitable density is 2200 to 2500 plants / 667 square meters. Re-application of early flower fertilizer, generally every 667 square meters of urea 15 20 kg, foliar fertilizer spraying as appropriate. Make soil moisture before sowing and water it in case of drought. The second generation of cotton bollworm generally does not control, the third and fourth generation of appropriate control, timely control of aphids, cotton leaf mites, blind Toona mulatta, tobacco planthopper and other pests. Chemical control for a small number of times.

Jinmian 38 (original code DR409)

Approval number: Lunong examination No. 2006032 (approved by Shanxi crop Variety approval Committee in 2004).

Breeders: cotton Research Institute of Shanxi Academy of Agricultural Sciences, Institute of Microbiology of Chinese Academy of Sciences, Henan Kerun Biotechnology Co., Ltd. Introduced by Xiajin Yinxing seed Industry Co., Ltd.

Variety source: 95m2527 and 94187 were selected systematically after crossing.

Characteristics: conventional varieties of transgenic insect-resistant cotton. The seedling is good, the seedling is small, the leaf is medium, the leaf color is dark green. The growth period is 127days, plant height 103.9 cm, first fruit branch node 7.1, fruit branch number 14.5, boll per plant 23.8g, boll weight 5.6g, pre-frost lint percentage 38.2%, seed finger 10.9g, pre-frost flower rate 95.7%, stiff flower rate 5.5%. In 2005, it was tested by the Cotton quality Supervision, Inspection and testing Center of the Ministry of Agriculture (HVICC): fiber length 29.8mm, evenness 85.4%, specific strength 30.2cN/tex, micronaire value 4.8, spinning evenness index 148.5. Identification of disease resistance of Cotton Research Institute of Shanxi Academy of Agricultural Sciences in 2002: resistance to Fusarium wilt and resistance to Verticillium wilt.

Yield performance: in the cotton introduction experiment in Shandong Province in 2005, seed cotton and frost pre-frost seed cotton produced an average of 250.7 kg and 239.8 kg per 667m2, respectively, an increase of 2.5% and 2.8% over the control Lumianyan 15, respectively. the average yield of lint and pre-frost lint was 95.9kg and 91.6kg per 667m2, which was 0.7% and 0.4% lower than that of the control Lumianyan 15, respectively.

Key points of cultivation techniques: plastic film mulching, timely sowing, and adequate base fertilizer before sowing. The suitable density is 2600 to 3500 plants / 667 square meters. Timely watering and topdressing nitrogen fertilizer at flower bud stage, paying attention to timely chemical control, strengthening management in the middle and later stage, fine pruning, increasing peach setting rate, and spraying foliar fertilizer to prevent premature senility. The third and fourth generations of cotton bollworm should be properly controlled.