Breeding of a New Cotton Variety ‘Xumian 608’ Suitable for Machine Picking with Early Maturity and High Quality

doi:10.11923/j.issn.2095-4050.cjas2023-0007

Abstract

Abstract:

Aiming at the problems such as grain and cotton competition for land, excessive labor and increasing labor costs in cotton production, a new early-maturing cotton variety ‘Xumian 608’ was bred by cross-breeding technology with ‘Lumian 19’ as female parent and ‘Xu Mian 266’ as male parent. ‘Xumian 608’ can meet the one year two-harvest planting system of wheat (garlic, oil) and cotton, and is suitable for mechanized harvesting. In the regional trial of new cotton varieties in Jiangsu Province from 2018 to 2019, the growth period of ‘Xumian 608’ was 99 days, the lint percentage was 40.1%, and the lint yield of ginned cotton was 1221.0 kg/hm², which was 3.9% higher than that of the control ‘Zhong mian Suo 50’. The plant height was 87.5 cm and the first fruit branch height was 20.8 cm, which met the standard of machine-picked cotton plant type. The average length of the upper half part of the fiber was 28.1 mm, the specific breaking strength was 29.2 cN/tex, and the micronaire value was 5.1. In the production test of Jiangsu Province in 2020, the average lint yield was 1340.3 kg/hm², which was 10.5% higher than that of the control ‘Zhong mian Suo 50’. This variety was suitable for promoting and planting in the early-maturing cotton areas in Jiangsu Province, Yangtze River basin and Yellow River basin. It showed tolerance to wilt, verticillium and salt, resistant to bollworm and sensitivity to defoliating agents.

Key words: early maturing cotton, ‘Xumian 608’, variety breeding, yield, quality

ZHAO Mingming, HU Xinyan, LI Weihua, LI Ke, WANG Kang, CHEN Xiaoguang. Breeding of a New Cotton Variety ‘Xumian 608’ Suitable for Machine Picking with Early Maturity and High Quality[J]. Journal of Agriculture, 2024, 14(1): 29-33.

Figures/Tables 9

References 22

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年份	品种	皮棉产量/(kg/hm²)	皮棉产量较CK增减产/%	衣分/%	僵瓣率/%
2018	徐棉608	1204.1	7.4	39.1	4.3
2018	中棉所50(CK)	1121.0	—	37.8	4.9
2019	徐棉608	1237.9	0.3	41.2	3.0
2019	中棉所50(CK)	1234.0	—	39.1	2.3
2020	徐棉608	1340.3	10.5	40.8	2.0
2020	中棉所50(CK)	1213.3	—	39.0	2.1

年份	品种	皮棉产量/(kg/hm²)	皮棉产量较CK增减产/%	衣分/%	僵瓣率/%
2018	徐棉608	1204.1	7.4	39.1	4.3
2018	中棉所50(CK)	1121.0	—	37.8	4.9
2019	徐棉608	1237.9	0.3	41.2	3.0
2019	中棉所50(CK)	1234.0	—	39.1	2.3
2020	徐棉608	1340.3	10.5	40.8	2.0
2020	中棉所50(CK)	1213.3	—	39.0	2.1

试验类型	年份	绒长/mm	比强力/(cN/tex)	马克隆值	伸长率/%	反射率/%	整齐度/%	纺纱指数
区域试验	2018	28.7	29.8	5.1	6.2	80.0	84.7	138
	2019	27.5	28.6	5.1	6.9	81.3	83.9	128
	平均	28.1	29.2	5.1	6.6	80.7	84.3	133
生产试验	2020	27.9	29.9	5.2	7.5	79.3	84.0	132

试验类型	年份	绒长/mm	比强力/(cN/tex)	马克隆值	伸长率/%	反射率/%	整齐度/%	纺纱指数
区域试验	2018	28.7	29.8	5.1	6.2	80.0	84.7	138
	2019	27.5	28.6	5.1	6.9	81.3	83.9	128
	平均	28.1	29.2	5.1	6.6	80.7	84.3	133
生产试验	2020	27.9	29.9	5.2	7.5	79.3	84.0	132

年份	品种	霜前花率/%	果枝始节/节	10月5日前收花率/%	出苗期（月/日）	开花期（月/日）	吐絮期（月/日）	生育期/d
2018	徐棉608	89.5	6.2	45.5	6/3	7/25	9/ 11	100
2018	中棉所50(CK)	89.7	5.6	43.6	6/3	7/25	9/ 11	100
2019	徐棉608	92.4	5.7	46.2	6/3	7/24	9/ 8	97
2019	中棉所50(CK)	92.3	5.7	38.6	6/3	7/27	9/ 8	97
2020	徐棉608	80.8	6.0	47.1	6/3	7/26	9/ 16	102
2020	中棉所50(CK)	79.2	5.6	40.7	6/3	7/27	9/ 17	103