高CO2浓度、干旱及其互作对不同持绿型小麦幼苗的影响

doi:10.13287/j.1001-9332.202007.024

应用生态学报 ›› 2020, Vol. 31 ›› Issue (7): 2407-2414.doi: 10.13287/j.1001-9332.202007.024

高CO₂浓度、干旱及其互作对不同持绿型小麦幼苗的影响

牛胤全¹, 史雨刚¹, 汤小莎¹, 晋秀娟¹, 曹亚萍², 杨进文¹, 王曙光¹, 孙黛珍^1*

¹山西农业大学农学院, 山西太谷 030801;
²山西省农业科学院小麦研究所, 山西临汾 041000

收稿日期:2019-11-25 接受日期:2020-04-29 出版日期:2020-07-15 发布日期:2021-01-15
通讯作者: E-mail: sdz64@126.com
作者简介:牛胤全, 男, 1993年生, 硕士研究生。主要从事小麦适应未来气候变化的研究。E-mail: ndniuyinquan@163.com
基金资助:
国家重点研发计划项目(2017YFD0300202-4)、山西省重点研发计划项目(201703D211007-6, 201803D221008-3)、山西省农业科学院农业科技创新研究课题(YCX2018412)和山西省自然科学基金项目(201901D111228)资助

Effects of high CO₂ concentration, drought, and their interaction on different stay-green wheat seedlings

NIU Yin-quan¹, SHI Yu-gang¹, TANG Xiao-sha¹, JIN Xiu-juan¹, CAO Ya-ping², YANG Jin-wen¹, WANG Shu-guang¹, SUN Dai-zhen^1*

¹College of Agronomy, Shanxi Agricultural University, Taigu 030801, Shanxi, China;
²Wheat Research Institute, Shanxi Academy of Agricultural Sciences, Linfen 041000, Shanxi, China

Received:2019-11-25 Accepted:2020-04-29 Online:2020-07-15 Published:2021-01-15
Contact: E-mail: sdz64@126.com
Supported by:
This work was supported by the National Key Research and Development Program of China (2017YFD0300202-4), the Shanxi Province Key Research and Development Program (201703D211007-6, 201803D221008-3), the Agricultural Science and Technology Innovation Research Project of Shanxi Academy of Agricultural Sciences (YCX2018412) and the Shanxi Province Natural Science Foundation (201901D111228).

摘要/Abstract

摘要： 以小麦持绿型品种‘烟农19'和非持绿型品种‘旱选3号'为试材,在开放式气室(OTC)内设置正常CO₂浓度(370 μmol·mol^-1)和高CO₂浓度(550 μmol·mol^-1),干旱(田间持水量的45%～55%)和灌溉(田间持水量的75%～85%),共4个环境处理,采用盆栽法研究高CO₂浓度、干旱及其互作对不同持绿型小麦幼苗生长性状、生物量积累和生理性状的影响。结果表明: 干旱显著抑制了小麦幼苗的生长发育;高CO₂浓度对小麦幼苗的生长发育有明显的促进作用,对分蘖数的影响更显著,干旱条件下高CO₂浓度使旱选3号和烟农19的分蘖数分别增加了61.0%和42.3%。两种水分条件下,高CO₂浓度显著增加了小麦幼苗的生物量,降低了幼苗叶片过氧化物酶和脯氨酸的含量。干旱条件下,高CO₂浓度表现出更好的“肥效作用”。此外,不同持绿型小麦品种对高CO₂浓度的响应存在差异,旱选3号对CO₂的响应更敏感。因此,在未来气候变化背景下,CO₂浓度升高时可以适当减少田间灌水量,合理利用水资源,还需注意选择适宜的品种。

关键词: 小麦, 开放式气室, CO₂浓度, 干旱, 幼苗, 生理性状

Abstract: In this study, a pot experiment was carried out to examine the effects of high CO₂ concentration, drought and interaction on seedling growth traits, biomass accumulation and physiological characteristics of different stay-green wheat seedlings, with a stay-green wheat variety Yannong 19 and a non stay-green wheat variety Hanxuan 3 as test materials. There were four treatments in the Open Top Chamber with factorial of CO₂ concentration (370 μmol·mol^-1 vs 550 μmol·mol^-1) and drought (45%-55% vs. 75%-85% of field water-holding capacity). Drought significantly inhibited the growth and development of wheat seedlings, while CO₂ concentration significantly increased the number of tillers and promoted the growth and development of wheat seedlings. Under drought condition, high CO₂ concentration increased the number of tillers of Hanxuan 3 and Yannong 19 by 61.0% and 42.3%, respectively. Under both water conditions, high CO₂ concentration significantly increased the biomass of wheat seedlings, and decreased the content of peroxidase and proline in leaves. Under drought condition, high CO₂ concentration showed stronger “fertilizer effect”. Furthermore, different varieties had different responses to high CO₂ concentration, with higher sensitivity of Hanxuan 3 to enhancement of CO₂ concentration. Under the scenario of increasing CO₂ concentration, the amount of irrigation water applied to a field can be appropriately reduced for efficient use of water resources. Meanwhile, it is necessary to pay attention to the selection of suitable wheat varieties.

Key words: wheat, OTC, CO₂ concentration, drought stress, seedling, physiological character

牛胤全, 史雨刚, 汤小莎, 晋秀娟, 曹亚萍, 杨进文, 王曙光, 孙黛珍. 高CO₂浓度、干旱及其互作对不同持绿型小麦幼苗的影响[J]. 应用生态学报, 2020, 31(7): 2407-2414.

NIU Yin-quan, SHI Yu-gang, TANG Xiao-sha, JIN Xiu-juan, CAO Ya-ping, YANG Jin-wen, WANG Shu-guang, SUN Dai-zhen. Effects of high CO₂ concentration, drought, and their interaction on different stay-green wheat seedlings[J]. Chinese Journal of Applied Ecology, 2020, 31(7): 2407-2414.

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高CO₂浓度、干旱及其互作对不同持绿型小麦幼苗的影响

Effects of high CO₂ concentration, drought, and their interaction on different stay-green wheat seedlings

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