What are the latest high-yielding cotton varieties?

Cotton is a plant of cotton genus of Malvaceae, originating in the subtropics, and has been widely cultivated in various cotton producing areas in China. The existing cultivated varieties include Si Zi cotton, German cotton, Dai cotton, Ke cotton and so on. The main commercial cotton bases are Jianghuai Plain, Jianghan Plain, Southern Xinjiang Cotton area, South Hebei, Northwest Shandong, North Henan Plain, and the Coastal Plain along the Yangtze River. Let's take a look at the high-yield cotton varieties.

Xiangzamian 7

[planting area] Xiangzamian 7 is a mid-mature hybrid cotton variety transformed with insect-resistant genes, and has obtained the safety certificate for production and application of agricultural genetically modified organisms. The name of transgenic organisms is Xiangzamian 7, which accords with the national cotton variety approval standard and has been approved. It is suitable for spring sowing in Jiangsu, south of Huaihe River, northern Jiangxi, Hubei, northern Hunan, eastern Sichuan, southern Henan and Zhejiang coastal areas.

[plant characteristics] in the cotton area of the Yangtze River basin, the spring sowing growth period is 123 days, the seedling emergence is good, the growth is strong, and the uniformity is good. The plant height is 115 cm, the plant type is compact, the fruit branch is long and spreading, the stem is stout, hairy, the leaf is larger, dark green, the first fruit branch node is 6.4 nodes, the boll per plant is 28, the boll is oval, the boll weight is 6.1 grams, the lint percentage is 42.1%, the seed finger is 9.9 grams, the flower rate before frost is 94.3%, and the inflorescence rate is 7.4%.

[high yield performance] participated in the regional trial of medium maturity group in the cotton area of the Yangtze River Basin from 2006 to 2007. The two-year average yield of seed cotton, lint and pre-frost lint per mu was 262.7 kg, 110.4 kg and 104.4 kg respectively, which was 4.3%, 12.0% and 12.5% higher than that of Xiangzamian 8, respectively. In the production test in 2008, the yield of seed cotton, lint cotton and pre-frost lint per mu was 225.4 kg, 95.4kg and 88.1kg respectively, which was 1.4%, 7.7% and 8.6% higher than that of Xiangzamian 8, respectively.

[resistance identification] resistant to Fusarium wilt, Verticillium wilt, medium resistance to Helicoverpa armigera, resistance to red bollworm.

China Cotton Institute 63

[planting area] China Cotton Institute 63 is the Cotton Research Institute of the Chinese Academy of Agricultural Sciences and biotechnology, so the new conventional upland cotton line "9053" is the female parent, and the improved line SKK9708, a new domestic bivalent transgenic insect-resistant cotton variety, is the male parent. The bivalent transgenic insect-resistant cotton hybrid is suitable for planting in the Yangtze River valley.

[plant characteristics] good seedling emergence, tower-shaped plant, high school plant, compact fruit branches, less hairy stems, medium-sized leaves, dark leaves, round bolls, smooth spitting. During the growth period of 125 days, plant height 109.50~121.0cm, fruit branches 17.81, boll per plant 25.57-29.5, boll weight 5.71-6.6 g, lint percentage 40.9-41.52%, seed finger 9.81-10.3 g, pre-frost flower rate 88.57-93%, stiff petal rate 4.4-12.24%.

[high yield performance] the average seed cotton yield of Zhongmiansuo 63 was 3567.30 kg / ha, 10.1% higher than that of the control (Xiangzamian 2 F1), and the average lint yield was 1478.55 kg / ha, which was 10.0% higher than that of the control, ranking first, and the increase was extremely significant. The lint yield before frost was 1310.40 kg / ha, 10.2% higher than that of the control. According to the results of production experiments at 10 sites in the Yangtze River Basin in 2006, the yields of seed cotton and lint were 3876.00 kg / ha and 1585.50 kg / ha respectively, which were 0.4% and 2.3% higher than those of the control (Xiangzamian 8 F1).

[resistance identification] resistant to Fusarium wilt, Verticillium wilt, high resistance to cotton bollworm, high resistance to red bollworm.

Tongza 411

Tongza 411 is a mid-mature hybrid variety transformed with insect-resistant gene, which has obtained the safety certificate for the production and application of agricultural genetically modified organisms and meets the national cotton variety approval standard. it is suitable for spring sowing in Jiangsu and Anhui south of Huaihe River, northern Jiangxi, Hubei, northern Hunan, eastern Sichuan, southern Henan and Zhejiang coastal areas.

[plant characteristics] the spring sowing growth period of cotton in the Yangtze River basin is 124 days. The seedling is good, the growth is strong, the uniformity is good. The plant height is 114.7 cm, the plant type is compact, the fruit branch is longer and spreading, the stem is stout, the hairs are less, the leaf is medium size, dark green, the first fruit branch is 6.7 nodes, the boll per plant is 29.5, the boll is oval, the boll is smooth, the single boll weight is 6g, the lint percentage is 43.2%, the seed finger is 10.4g, the pre-frost flower rate is 93.3%, and the inflorescence rate is 11.8%.

[high yield performance] participated in the regional trial of medium maturity group in the Yangtze River Basin from 2007 to 2008, the two-year average yield of seed cotton, lint and pre-frost lint per mu was 249.8 kg, 108kg and 100.9 kg respectively, which was 6.3%, 16.0% and 16.8% higher than that of Xiangzamian 8, respectively. In the production test in 2008, the yield of seed cotton, lint cotton and pre-frost lint per mu was 248.9 kg, 107.9 kg and 100.5 kg respectively, which increased by 6.9%, 16.2% and 17.0% respectively compared with the control Xiangzamian 8.

[resistance identification] resistant to Fusarium wilt, Verticillium wilt and cotton bollworm.

Ezamian 29

[planting area] the first generation variety of transgenic insect-resistant gene was selected and bred by Jingzhou Academy of Agricultural Sciences and Institute of Biotechnology of Chinese Academy of Agricultural Sciences. It has obtained safety certificate for production and application of agricultural genetically modified organisms, meets the national cotton variety approval standard, and is suitable for spring sowing in the south of Huaihe River in Jiangsu and Anhui provinces (except Anqing and Yancheng), coastal areas of Zhejiang, northern Jiangxi, Jianghan Plain of Hubei and Hunan.

[plant characteristics] the spring sowing growth period of cotton in the Yangtze River Basin is 123 days, with good seedling emergence, strong growth and good uniformity. The plant type is compact, the plant height is 118 cm, the stem is stout and less fluffy, the fruit branches are long and spreading, the leaves are medium size and light green, the first fruit branch is 6.3 nodes, the bolls per plant are 26.1, the bolls are oval, the bolls are smooth, the single boll weight is 6.2 grams, the lint percentage is 41.7%, the seed finger is 10.4 grams, and the pre-frost flowering rate is 94.8%.

[high yield performance] participated in the regional trial of mid-maturity hybrid group in the Yangtze River Basin from 2005 to 2006. In 2005, the yield per mu of seed cotton, lint and pre-frost lint was 213.7 kg, 89.3kg and 84.3kg respectively, which was 7.1%, 7.9% and 10.0% higher than that of Xiangzamian 2, respectively. In 2006, the yields of seed cotton, lint and pre-frost lint per mu were 257.9 kg, 107.2 kg and 102.1 kg respectively, an increase of 2.3%, 8.7% and 9.2% over the control Xiangzamian 8, respectively. In the production test in 2007, the yield of seed cotton, lint cotton and pre-frost lint per mu was 247.5 kg, 103.5 kg and 98.0 kg respectively, which increased by 4.7%, 11.2% and 11.4% respectively over the control Xiangzamian 8.

[resistance identification] resistant to Fusarium wilt, Verticillium wilt, high resistance to cotton bollworm, high resistance to red bollworm.

Lu Mianyan 28

[planting area] Lumianyan 28 is a transgenic insect-resistant conventional variety, which accords with the national cotton variety approval standard, and belongs to transgenic conventional wheat and spring cotton varieties. It is suitable for spring interplanting of wheat in the cotton area of the Yellow River valley north of Huaihe River in southern Hebei, Shandong, northern Henan, central and eastern Henan, Jiangsu and Anhui provinces.

[plant characteristics] the whole growth period of interplanting wheat field in the Yellow River valley is 138 days, the plant shape is loose, the plant height is 90.4 cm, the stem is tough, the hairs are medium-dense, the leaves are medium-sized and green, the whole plant has glands, the glands are medium-dense, the fruit branch is 6.8 nodes, the boll per plant is 15.7, the boll is round, the bell tip is protruding, the boll shell is thin, the boll is smooth and concentrated, the single boll weight is 5.8 grams, the lint percentage is 41.5%, and the seed finger is 10.8 grams. The flower rate before frost is 88.6%, the seedling potential is general, the whole growth period is steady, the leaf function is strong in the middle and later stage, and there is no premature senility.

[high yield performance] participated in the regional trial of wheat interplanting cotton group in the cotton area of the Yellow River Basin from 2002 to 2003. The yields of seed cotton, lint and pre-frost lint per mu were 232.2 kg, 96.2kg and 85.2kg respectively, which increased by 19.0%, 15.6% and 16.2% respectively compared with the control Yu 668. In the production test in 2004, the yields of seed cotton, lint and pre-frost lint per mu were 226.5 kg, 95.7kg and 90.2kg respectively, which were 12.1%, 20.1% and 23.1% higher than those of Zhongmiansuo 45, respectively.

[resistance identification] High resistance to Fusarium wilt, resistance to Verticillium wilt, resistance to cotton bollworm.