干旱模式下木薯气孔密度及生理指标的比较分析

张圆雷; 张宏图; 徐子寅; 李淑霞; 于晓玲; 赵平娟; 李文彬; 张秀春; 于晓惠; 阮孟斌

doi:10.15886/j.cnki.rdswxb.20240056

干旱模式下木薯气孔密度及生理指标的比较分析

doi: 10.15886/j.cnki.rdswxb.20240056

张圆雷^1,2,
张宏图^1,2,
徐子寅^2,3,
李淑霞^2,3,
于晓玲^2,3,
赵平娟^2,3,
李文彬^2,3,
张秀春^2,3,
于晓惠^1,,
阮孟斌^2,3,

1. 海南大学热带农林学院, 海口 570228 中国;
2. 中国热带农业科学院热带生物技术研究所/海南省热带农业生物资源保护与利用重点实验室, 海口 571101 中国;
3. 中国热带农业科学院三亚研究院/热带作物生物育种全国重点实验室, 海南三亚 572025 中国

基金项目:

国家自然科学基金面上项目(32272037)

详细信息

第一作者:
张圆雷(1999-),男,海南大学热带农林学院2021级硕士研究生。E-mail:hainandaxuezyl@163.com

通信作者:
于晓惠(1987-),女,讲师。研究方向:分子遗传。E-mail:xiaohuiyu@hainanu.edu.cn

阮孟斌(1979-),男,研究员。研究方向:分子遗传。E-mail:ruanmengbin@itbb.org.cn

中图分类号: S533

Comparative analysis of stomatal density and physiological indexes of cassava under drought stress

1. School of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan 570228;
2. Hainan Key Laboratory of Tropical Agricultural Biological Resources Conservation and Utilization, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101;
3. Sanya Academy/National Key Laboratory of Tropical Crop Biological Breeding, Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan 572025, China

摘要: 为解析木薯（Manihot esculenta）在干旱胁迫下的生理调控机制，本研究统计分析了93个木薯栽培品种的气孔密度，比较干旱胁迫下不同木薯品种气孔密度的变化情况，并对其叶片生理生化指标进行测定，分析不同木薯品种气孔密度及生理指标与其抗旱性的关系。结果发现：1）在干旱胁迫下，不同栽培品种气孔密度的变化规律不一致，木薯气孔密度与抗旱性呈弱负相关（相关系数为-0.15）;2）在干旱胁迫条件下，6个木薯栽培品种（3个低气孔密度和3个高气孔密度）叶片的可溶性糖含量和蒸腾速率均显著下降，但在高、低气孔密度品种间没有显现出非常一致的规律。因此，干旱对木薯生长的影响较大，木薯可能通过合成渗透调节物质及抗氧化物酶来快速响应干旱胁迫，并进一步影响气孔的分化发育。
- 木薯 /
- 气孔 /
- 干旱胁迫 /
- 生理指标
Abstract: Cassava is an important tropical food crop with high light efficiency and drought tolerance. Stomata is the gateway through which water and air exchange between plant leaves and the external environment. Stomata density directly affect the drought resistance of plants. However, the physiological mechanism of stomata in the formation of drought tolerance in cassava is not clear. In order to analyze the physiological regulation mechanism of cassava under drought stress, the stomatal density of 93 cassava cultivars was statistically analyzed, the changes of stomatal density of different cassava cultivars under drought stress were compared, and the physiological and biochemical indexes of their leaves were measured to analyze the relationship between stomatal density and physiological indexes of different cassava cultivars and their drought resistance. The results showed that stomatal density of cassava cultivars under drought stress was not consistent. Overall, there was a weak negative correlation between stomatal density and drought resistance（correlation coefficient was -0.15）. The soluble sugar content and transpiration rate decreased significantly in 6 cassava cultivars（3 with low stomatal density and 3 with high stomatal density） under drought stress, but the change was not very consistent in both the high and low stomatal density cultivars. It was hence concluded that drought had a greater impact on cassava growth, and that cassava might respond to drought stress quickly through the synthesis of osmoregulatory substances and antioxidant enzymes, which further affect the differentiation and development of stomata.
- cassava /
- stomata /
- drought stress /
- physiological indicators

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干旱模式下木薯气孔密度及生理指标的比较分析

doi: 10.15886/j.cnki.rdswxb.20240056

第一作者:
张圆雷(1999-),男,海南大学热带农林学院2021级硕士研究生。E-mail:hainandaxuezyl@163.com

通信作者:
于晓惠(1987-),女,讲师。研究方向:分子遗传。E-mail:xiaohuiyu@hainanu.edu.cn

阮孟斌(1979-),男,研究员。研究方向:分子遗传。E-mail:ruanmengbin@itbb.org.cn

Comparative analysis of stomatal density and physiological indexes of cassava under drought stress

计量

干旱模式下木薯气孔密度及生理指标的比较分析

doi: 10.15886/j.cnki.rdswxb.20240056

作者简介:
张圆雷(1999-),男,海南大学热带农林学院2021级硕士研究生。E-mail:hainandaxuezyl@163.com

通讯作者: 于晓惠(1987-),女,讲师。研究方向:分子遗传。E-mail:xiaohuiyu@hainanu.edu.cn; 阮孟斌(1979-),男,研究员。研究方向:分子遗传。E-mail:ruanmengbin@itbb.org.cn

English Abstract

Comparative analysis of stomatal density and physiological indexes of cassava under drought stress

全文HTML

目录

留言板

干旱模式下木薯气孔密度及生理指标的比较分析

doi: 10.15886/j.cnki.rdswxb.20240056

第一作者: 张圆雷(1999-),男,海南大学热带农林学院2021级硕士研究生。E-mail:hainandaxuezyl@163.com

通信作者: 于晓惠(1987-),女,讲师。研究方向:分子遗传。E-mail:xiaohuiyu@hainanu.edu.cn 阮孟斌(1979-),男,研究员。研究方向:分子遗传。E-mail:ruanmengbin@itbb.org.cn

Comparative analysis of stomatal density and physiological indexes of cassava under drought stress

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干旱模式下木薯气孔密度及生理指标的比较分析

doi: 10.15886/j.cnki.rdswxb.20240056

作者简介: 张圆雷(1999-),男,海南大学热带农林学院2021级硕士研究生。E-mail:hainandaxuezyl@163.com

通讯作者: 于晓惠(1987-),女,讲师。研究方向:分子遗传。E-mail:xiaohuiyu@hainanu.edu.cn; 阮孟斌(1979-),男,研究员。研究方向:分子遗传。E-mail:ruanmengbin@itbb.org.cn

English Abstract

Comparative analysis of stomatal density and physiological indexes of cassava under drought stress

全文HTML

目录

第一作者:
张圆雷(1999-),男,海南大学热带农林学院2021级硕士研究生。E-mail:hainandaxuezyl@163.com

通信作者:
于晓惠(1987-),女,讲师。研究方向:分子遗传。E-mail:xiaohuiyu@hainanu.edu.cn

阮孟斌(1979-),男,研究员。研究方向:分子遗传。E-mail:ruanmengbin@itbb.org.cn

作者简介:
张圆雷(1999-),男,海南大学热带农林学院2021级硕士研究生。E-mail:hainandaxuezyl@163.com