Effects of Clipping Height on Stress Resistance and Antioxidant Enzymes Activities of Dual-purpose Winter Wheat

doi:10.11733/j.issn.1007-0435.2017.04.011

Acta Agrestia Sinica ›› 2017, Vol. 25 ›› Issue (4): 762-767,789.DOI: 10.11733/j.issn.1007-0435.2017.04.011

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Effects of Clipping Height on Stress Resistance and Antioxidant Enzymes Activities of Dual-purpose Winter Wheat

WANG Yu-ping, YANG Jing-ning, WANG Dan-dan, YANG Qian, ZHANG Xiao-ming, SHEN Yu-ying

College of Pastoral Agriculture Science and Technology, Lanzhou University, State Key Laboratory of Grassland Agro-ecosystems, National Demonstration Center for Experimental Grassland Science Education(Lanzhou University), Lanzhou, Gansu Province 730020, China

Received:2016-02-29 Revised:2017-08-06 Online:2017-08-15 Published:2017-11-01

刈割高度对粮饲兼用小麦抗逆性及保护性酶活性的影响

王玉平, 杨景宁, 王丹丹, 杨倩, 张小明, 沈禹颖

兰州大学草地农业科技学院草地农业生态系统国家重点实验室草业科学国家级实验教学示范中心(兰州大学), 甘肃兰州 730020

通讯作者: 沈禹颖,E-mail:yy.shen@lzu.edu.cn
作者简介:王玉平(1990-),女,甘肃白银人,硕士,研究实习员,E-mail:ypw@lzu.edu.cn;
基金资助:
甘肃省科技支撑计划-陇东黄土高原冬小麦粮饲兼用的技术体系研究与示范（1504NKCA081）；教育部创新团队草地农业系统耦合与管理（IRT_17R50）资助

Abstract

Abstract:

The effects of clipping on dual-purpose winter wheat physiological metabolism were studied in pot trials. Experiment was conducted at the greenhouse of college of pastoral agriculture science and technology of Lanzhou university. Three treatments were set up, including residue removal (CK), 3 cm height (RE-3) and 6 cm height (RE-6). Each treatment had 40 replications. The seedling dry matter (DM), water soluble sugar (WSS), soluble protein concentration (SP), the activities of peroxidase (POD) and superoxide dismutase (SOD) were measured under different cutting intensities. The results showed that DM and WSS of above ground were significantly decreased with increasing clipping height.(P <0.05).Compared to CK, the leaf SP and above-ground SOD activity under RE-3 treatment were increased 18%~25% and 10%~30%, respectively (P <0.05); the stem POD activity was also increased 30% under RE-6 treatment (P <0.05). However, the under-ground POD activity was decreased with increasing clipping intensity, and under-ground SOD activity was not significantly affected by clipping intensity. Therefore, determining the optimum residue height and intensity of clipping to maximize winter wheat recovery was beneficial to dual-purpose use of wheat.

Key words: Winter wheat, Clipping, Water soluble sugar, Soluble protein, Antioxidant enzymes activities

摘要：

为探索刈割对冬小麦抗逆生理特性的影响，在温室控制条件下，设置不同刈割留茬高度（6 cm（RE-6）、3 cm（RE-3），不刈割（CK）），以‘陇育4号’冬小麦（Triticum aestivum）为材料，分析植株干物质（DM）积累，可溶性糖（WSS）、可溶性蛋白含量（WP），过氧化物酶（POD）和超氧化物歧化酶（SOD）等抗逆指标活性。结果表明：刈割后20 d内冬小麦干物质和可溶性糖含量随着刈割留茬高度增加而减少（P <0.05），RE-3处理下叶可溶性蛋白与地上部SOD活性分别较对照显著增加18%~25%和10%~30%（P <0.05），RE-6处理茎POD活性较对照显著增加30%（P <0.05）。刈割降低植株地下部POD活性，但对地下部SOD活性无显著影响。刈割留茬3 cm下‘陇育4号’通过增加地上部可溶性蛋白及地上部抗氧化酶活性，为其安全越冬及早春的恢复生长提供生理基础。

关键词: 冬小麦, 刈割, 可溶性糖, 可溶性蛋白, 保护性酶活性

CLC Number:

S512.11

WANG Yu-ping, YANG Jing-ning, WANG Dan-dan, YANG Qian, ZHANG Xiao-ming, SHEN Yu-ying. Effects of Clipping Height on Stress Resistance and Antioxidant Enzymes Activities of Dual-purpose Winter Wheat[J]. Acta Agrestia Sinica, 2017, 25(4): 762-767,789.

王玉平, 杨景宁, 王丹丹, 杨倩, 张小明, 沈禹颖. 刈割高度对粮饲兼用小麦抗逆性及保护性酶活性的影响[J]. 草地学报, 2017, 25(4): 762-767,789.

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Effects of Clipping Height on Stress Resistance and Antioxidant Enzymes Activities of Dual-purpose Winter Wheat

刈割高度对粮饲兼用小麦抗逆性及保护性酶活性的影响

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