WANG Xin,SUN Xinuo,SUN Xinbo,et al.Effects of Trinexapac-Ethyl on Growth and Turf Quality of Baoding Bermudagrass Under Shade[J].Northern Horticulture,2019,43(22):76-82.[doi:10.11937/bfyy.20190872]
抗倒酯对遮荫下狗牙根生长和草坪质量的影响
- Title:
- Effects of Trinexapac-Ethyl on Growth and Turf Quality of Baoding Bermudagrass Under Shade
- Keywords:
- bermudagrass; turfgrass; shade; trinexapac-ethyl; turf visual quality
- 文献标志码:
- A
- 摘要:
- 以河北农业大学选育的‘保定狗牙根’为试验材料，在50%遮荫胁迫下，采用3种浓度抗倒酯60、120、240 μL?m-2对盆栽草坪进行喷施处理，探讨抗倒酯对遮荫胁迫下‘保定狗牙根’生长及草坪质量的影响。结果表明：施用6周后，喷施抗倒酯处理的狗牙根植株高度较对照显著降低了49.7%~55.0%，叶片长度和节间长度分别较对照缩短了52.2%~57.9%和43.0%~49.5%，叶片宽度和茎粗分别较对照增加了60.1%~76.6%和37.6%~68.8%，且均以高浓度处理效果最明显；试验期间，抗倒酯处理的狗牙根草坪外观质量综合评分较对照提高了10.2%~25.3%，叶片可溶性糖含量有所增加，但叶片PSⅡ最大光化学效率（Fv/Fm）无明显变化。表明喷施抗倒酯有助于改善‘保定狗牙根’草坪在遮荫胁迫下的表现。
- Abstract:
- Taking ‘Baoding bermudagrass’ selected by Hebei Agricultural University as the plant material,the experiment was conducted to determine the influence of trinexapac-ethyl (TE) on the growth and turf quality of bermudagrass under 50% shade.Trinexapac-ethyl was applied at 60 μL?m-2，120 μL?m-2 and 240 μL?m-2 by spraying on separate containers.The results showed TE had significant effects on plant height,leaf and internode length,leaf width,stem diameter and turf visual quality of ‘Baoding bermudagrass’ under shade.After 6 weeks,the height,leaf length and internode length of TE-treated plants reduced by 49.7% to 55.0%,52.2% to 57.9% and 43.0% to 49.5% compared with non-TE-treated plants respectively,but leaf width and stem diameter significantly increased by 60.1% to 76.6% and 37.6% to 68.8% respectively with increasing TE rate.Trinexapac-ethyl enhanced turf visual quality by 10.2%-25.3% and increased the soluble sugar content to some extent during the study,but had no significant influence on Fv/Fm of leaves.The results suggested that TE was conducive to improve the shade performance of ‘Baoding bermudagrass’.
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备注/Memo
第一作者简介：王新（1991-），女，硕士研究生，研究方向为草坪科学与管理。E-mail：820974704@qq.com.责任作者：李会彬（1978-），男，博士，副教授，研究方向为作物逆境生理与调控。E-mail：lihb@hebau.edu.cn.基金项目：河北省自然科学基金优秀青年资助项目（C2018204056）；河北省高等学校科学技术研究资助项目（Z2017004）；河北农业大学创新创业训练计划资助项目（2018135）。收稿日期：2019-04-29