匡政成 何叔军

摘要：为了湖南省机采棉品种选育，对2020年湖南省机采棉区域试验10个品种（系）的13个主要性状进行相关性分析。结果表明：籽棉产量与生育期、株高、第一果枝节位、第一果枝高度、单株结铃数呈正相关，与单株果枝数、衣分、单铃重、籽指、衣指、僵瓣花率呈负相关，以籽棉产量与单株结铃数、僵瓣花率的关系最为密切（r=0.678，-0.712）;皮棉产量与生育期、第一果枝高度、单株结铃数、衣分、籽棉产量呈正相关，与株高、第一果枝节位、单株果枝数、单铃重、籽指、衣指、僵瓣花率呈负相关，以皮棉产量与籽棉产量、单株结铃数、僵瓣花率关系最为密切（r=0.956，0.603，-0.710）。通过产量对比，筛选出产量相对较高、适宜在湖南省种植的中棉所1606、中棉早183、中MB901、盐棉462和湘棉36机采棉品种（系）。

关键词：湖南省;机采棉;产量;农艺性状;相关性分析

中图分类号：S562.038文献标识码：A文章编号：2095-3143（2021）06-0023-05

DOl：10.3969/j.issn.2095-3143，2021，06.004

Correlation Analysis of Main Characters of Machine-picked Cotton Variety in Hunan Province

KuangZhengcheng， He Shujun

（Hunan Cotton Research Institute. ，Changde， Hunan 415101， China）

Abstract： For the selection and breeding of machine-picked cotton varieties in Hunan Province， the correla-tion analysis of 13 main traits of 10 varieties （lines in Hunan Province machine - picked cotton regional trials in 2020 was carried out. The results showed the yield of seed cotton was positively correlated with growth period， plant height， first fruit branch node position， first fruit branch height， and number of bolls per plant， and had a positive correlation with the number of fruit branches per plant， lint percentage， boll weight， seed finger， lint finger， and stilt flower rate. The yield of seed cotton had the closest relationship with boll-setting and the stilt flower rate（r 0. 678，-0.712） . The lint cotton yield was positively correlated with growth period， height of first fruit branch number of bolls per plant， lint percentage， and yield of seed cotton， and was negatively correlated with plant height， first fruit branch node position， number of fruit branches per plant single boll weight， seed finger， lint fin-ger， and stilt flower rate. The lint yield had the closest relationship with the yield of seed cotton， the number of bolls per plant， and the rate of dead cotton （r= 0. 956， 0.603， -0. 710） . Through the comparison of yields Zhong 1606， Zhong 183， Zhong MB901， Yanmian 462 and Xiangmian 36 machine - picked cotton varieties （lines ） with relatively high yield and suitable for planting in Hunan Province were selected

Key words： Hunan Province; Machine - picked cotton; Yield; Agronomic traits; Correlation analysis

受農村劳动力减少、人工成本上涨、植棉效益下降等因素影响，近年来湖南省棉花种植模式逐步向轻简化（机械化）转变，因而对棉花品种也提出了新要求2。培育适宜湖南省种植的机采棉新品种，对推广棉花轻简化（机械化）生产技术，引导湖南省棉花生产健康发展具有十分重要的意义3-41。鉴于此，利用2020年湖南省机采棉区域试验数据，分析机采棉品种（系）的主要性状间的相关关系，以期为湖南省机采棉品种选育提供参考。

1材料与方法

根据2020年湖南省机采棉区域试验汇总资料，统计分析其10个机采棉品种（系）的生育期（X1）、株高（X2）、第一果……