草甘膦对海岛棉农艺性状及光合作用的影响

doi:10.6048/j.issn.1001-4330.2023.12.001

新疆农业科学 ›› 2023, Vol. 60 ›› Issue (12): 2861-2868.DOI: 10.6048/j.issn.1001-4330.2023.12.001

• 作物遗传育种·种质资源·分子遗传学·土壤肥料 • 上一篇下一篇

草甘膦对海岛棉农艺性状及光合作用的影响

秦国礼¹^,²(), 王为然², 王萌², 杨静², 黄幸磊¹, 刘志清², 朱家辉², 阿里甫·艾尔西², 孔杰²(), 陈国栋¹()

1.塔里木大学农学院,新疆阿拉尔 843300
2.新疆农业科学院经济作物研究所,乌鲁木齐 830091

收稿日期:2023-04-21 出版日期:2023-12-20 发布日期:2024-01-03
通信作者: 陈国栋(1986-),男,甘肃武威人,教授,博士,硕士生/博士生导师,研究方向为作物高产栽培,(E-mail)cgdzky@163.com;孔杰(1980-),男,河南淮阳人,研究员,博士,硕士生导师,研究方向为海岛棉遗传育种,(E-mail)kongjie.258@163.com
作者简介:秦国礼(1996-),男,河北万全人,硕士研究生,研究方向为作物栽培学与耕作学,(E-mail)13903234529@163.com
基金资助:
新疆维吾尔自治区重大科技专项(2021A02001-4);新疆农业科学院青年科技骨干创新能力培养(xjnkq-2022010);塔里木大学研究生科研创新项目(TDGRI202119);天山英才计划(2021);神农青年英才(2022)

Effects of agronomic characters and photosynthetic parameters of glyphosate on sea island cotton

QIN Guoli¹^,²(), WANG Weiran², WANG Meng², YANG Jing², HUANG Xinglei¹, LIU Zhiqing², ZHU Jiahui², Alifu Aierxi², KONG Jie²(), CHEN Guodong¹()

1. College of Agriculture, Tarim University, Aral Xinjiang 843300, China
2. Institute of Cash Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China

Received:2023-04-21 Online:2023-12-20 Published:2024-01-03
Correspondence author: CHEN Guodong(1986-), male, native place: Wuwei, Gansu Provoince.Ph.D., Professor, doctoral supervisor, research of high yield cultivation theory and technology, (E-mail)cgdzky@163.com;KONG Jie (1980-),male, native place: Huaiyang, Henan Province, researcher, PhD, research field: Genetics and breeding of cotton,(E-mail)kongjie.258@163.com
Supported by:
Major R & D Project of Xinjiang Uygur Autonomous Region(2021A02001-4);Innovation Ability Training Project for Young Sci-Tech Backbone Talents Sponsored by Xinjiang Academy of Agricultural Sciences(xjnkq-2022010);Graduate Student Research Innovation Project of Tarim University(TDGRI202119);Tianshan Talent Project(2021);Shennong Young Talent Project(2022)

摘要/Abstract

摘要：

【目的】研究不同浓度草甘膦对海岛棉农艺性状及叶片光合作用的影响,为棉花化学除草提供技术指导。【方法】以抗草甘膦海岛棉新品系新长棉5号为研究对象,于棉花10叶期喷施1.25%、2.5%、5.0%、10.0%4种浓度草甘膦,测定分析株高、茎粗、叶期及光合指标的变化。【结果】4种浓度草甘膦处理后的海岛棉株高、茎粗、叶期、叶绿素含量、净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)、PSⅡ最大光化学效率(Fv/Fm)、PSⅡ的潜在活性(Fv/Fo)相比对照均呈下降趋势,草甘膦浓度越高,下降越明显;而细胞间CO₂浓度(Ci)呈升高趋势。1.25%处理于喷药后14 d生理指标与对照无差异,24 d农艺性状逐步恢复到对照水平。【结论】现蕾期(10叶期)喷施4种浓度的草甘膦会显著降低海岛棉的生长势,5%以上浓度处理影响海岛棉生长,新长棉5号田间化学除草使用草甘膦2.5%以下浓度为宜。

关键词: 海岛棉; 草甘膦; 农艺性状; 光合作用; 叶绿素荧光参数

Abstract:

【Objective】To study the effects of agronomical character and leaf photosynthetic parameters by different concentrations of glyphosate on glyphosate island cotton in the hope of providing chemical skills for weeding.【Methods】Using glyphosate-resistant Xinchangmian 5 as the research object and spraying four concentrations of glyphosate1.25%, 2.5%, 5.0%, 10.0% at 10 leaf stage, respectively, then plant height, stem diameter, leaf stage and photosynthetic indexes were measured.【Results】Compared with the control, plant height, stem diameter, leaf stage, chlorophyll content, net photosynthetic rate (Pn), stomatal conductance (Gs), transpiration rate (Tr), maximum photochemical efficiency of PSⅡ(Fv/Fm) and potential activity of PSⅡ(Fv/Fo) with treated by four concentrations of glyphosate were all decreased in sea island cotton. The glyphosate with higher concentrations, the more dramatic decline. However, the intercellular CO₂ concentration (Ci) showed an increasing trend. The treatment by 1.25% and 2.5% had no difference with control after 14 days of spraying, and the agronomic traits returned to the normal level after 24 days.【Conclusion】The growth trends reduce significantly by spraying 4 concentrations of glyphosate at the bud stage. More than 5% concentration of glyphosate affect the growth seriously sea island cotton Xinchangmian 5, so it is suggested that concentration below 2.5% of glyphosate be applied in production.

Key words: sea island cotton; glyphosate; agronomic traits; photosynthesis; chlorophyll fluorescence parameters

中图分类号:

S562

秦国礼, 王为然, 王萌, 杨静, 黄幸磊, 刘志清, 朱家辉, 阿里甫·艾尔西, 孔杰, 陈国栋. 草甘膦对海岛棉农艺性状及光合作用的影响[J]. 新疆农业科学, 2023, 60(12): 2861-2868.

QIN Guoli, WANG Weiran, WANG Meng, YANG Jing, HUANG Xinglei, LIU Zhiqing, ZHU Jiahui, Alifu Aierxi, KONG Jie, CHEN Guodong. Effects of agronomic characters and photosynthetic parameters of glyphosate on sea island cotton[J]. Xinjiang Agricultural Sciences, 2023, 60(12): 2861-2868.

图/表 3

图1 不同浓度草甘膦下棉花农艺性状及SPAD值变化注:小写字母代表显著差异(P<0.05),下同

Fig.1 Effects of different concentrations of glyphosate on cotton Agronomic traits and SPAD Note: small write letters represent significant difference (P< 0.05), the same as below

图2 不同浓度草甘膦下棉花光合特性变化

Fig.2 Effects of different concentrations of glyphosate on net photosynthetic indicators of cotton

图3 不同草甘膦浓度下棉花荧光特性变化

Fig.3 effects of different glyphosate concentrations on fluorescent efficiency of cotton

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草甘膦对海岛棉农艺性状及光合作用的影响

Effects of agronomic characters and photosynthetic parameters of glyphosate on sea island cotton

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