中国水稻科学 ›› 2021, Vol. 35 ›› Issue (2): 187-199.DOI: 10.16819/j.1001-7216.2021.0710

• 研究报告 • 上一篇    下一篇

全生育期臭氧胁迫对不同水稻品种稻草饲用品质的影响

章燕柳1, 邵在胜1, 杨阳2, 童楷程2, 王云霞2,*(), 景立权1, 王余龙1, 杨连新1   

  1. 1江苏省作物遗传生理重点实验室/江苏省作物栽培生理重点实验室/江苏省粮食作物现代产业技术协同创新中心/扬州大学 农学院, 江苏 扬州 225009
    2扬州大学 环境科学与工程学院, 江苏 扬州 225009
  • 收稿日期:2020-07-17 修回日期:2020-09-29 出版日期:2021-03-10 发布日期:2021-03-10
  • 通讯作者: 王云霞
  • 基金资助:
    国家自然科学基金资助项目(31471437, 31371563);江苏高校优势学科建设工程资助项目

Effects of Ozone Stress on Feeding Quality of Straw of Different Rice Varieties During the Whole Growth Period

Yanliu ZHANG1, Zaisheng SHAO1, Yang YANG2, Kaicheng TONG2, Yunxia WANG2,*(), Liquan JING1, Yulong WANG1, Lianxin YANG1   

  1. 1Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops/ College of Agronomy, Yangzhou University, Yangzhou 225009, China
    2College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China
  • Received:2020-07-17 Revised:2020-09-29 Online:2021-03-10 Published:2021-03-10
  • Contact: Yunxia WANG

摘要:

【目的】研究不同类型水稻品种稻草饲用品质相关理化指标对臭氧胁迫的响应。【方法】利用新型自然光气体熏蒸平台,以 8个水稻品种为供试材料,设置室内对照和高臭氧浓度(80 nL/L)处理,于抽穗期、穗后20 d和成熟期分别测定叶片和茎鞘中饲用品质相关的理化指标。【结果】与对照相比,高浓度臭氧处理使稻草粗蛋白、木质素、纤维素、半纤维素和总酚含量分别增加7.07%(P <0.1)、10.88%(P <0.1)、1.98%、0.92%和5.01% (P<0.01),可溶性糖和淀粉含量分别下降15.07%(P <0.1)和18.55%(P <0.01)。多数情形下,叶片各指标含量对臭氧胁迫的响应大于茎鞘。所有测定指标的品种间差异均达极显著水平。不同生育期稻草木质素、纤维素、半纤维素和总酚含量表现为穗后20 d>成熟期>抽穗期,稻草可溶性糖和淀粉含量则表现为抽穗期>成熟期>穗后20 d,而粗蛋白含量随生育进程推进呈降低趋势。方差分析表明,臭氧胁迫与品种互作对所有测定指标的影响均达显著或极显著水平;除总酚含量外,臭氧与植株部位互作对所有测定指标的影响均达极显著水平;而臭氧与生育时期互作仅对植株粗蛋白、纤维素、可溶性糖和总酚含量有显著或极显著影响。【结论】稻草饲用品质相关理化指标因生育时期、供试品种和茎叶不同部位而异,高浓度臭氧环境下稻草饲用品质表现出变劣的趋势。

关键词: 臭氧, 水稻, 饲用品质, 总酚, 淀粉

Abstract:

【Objective】The purpose of this study is to investigate the effects of ozone stress on feeding quality of rice straw. 【Method】By using a new-type natural-light gas fumigation platform, eight rice varieties were treated with high ozone (80 nL/L) or clean air from transplanting to maturity. The physicochemical indexes related to feed quality of rice straw at heading, 20 days after heading (DAH20) and maturity were analyzed. 【Result】The ozone stress increased the concentrations of crude protein, lignin, cellulose, hemicellulose and total phenol in rice straw by 7.07% (P< 0.1), 10.88% (P< 0.1), 1.98%, 0.92% and 5.01% (P<0.01), respectively; while the concentrations of soluble sugar and starch decreased by 15.07% (P< 0.1) and 18.55% (P<0.01). In most cases, the changes of feed quality index in leaves under ozone stress were greater than those in stems, respectively. Significant genotypic differences were detected for each measured feed value indexes. The concentrations of lignin, cellulose, hemicellulose and total phenol in straw followed the tendency of DAH20 > maturity > heading, the concentrations of soluble sugar and starch showed the opposite trend of heading > maturity > DAH20, while the crude protein concentration decreased successively with the growth process. Analysis of variance revealed significant interactions between ozone stress and varieties for all measured feed value indexes. Significant interactions between ozone and plant organs were detected for all feed value indexes except total phenol concentration. Significant interactions between ozone and growth period were found for the concentrations of crude protein, cellulose, soluble sugar and total phenol. 【Conclusion】Physicochemical indexes related to feed value of rice straw varied with the growth stages, varieties and organs of plants, ozone concentration of 80 nL/L leads to deterioration of feed value of rice straw.

Key words: ozone, rice, feed quality, total phenol, starch