Morphological and physiological traits of roots and their relationships with water productivity in water-saving and drought-resistant rice
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- 作者：Guang Chua ; Tingting Chena ; Zhiqin Wanga ; Jianchang Yanga ; jcyang@yzu.edu.cn" class="auth_mail ; jsyzyjc@126.com" class="auth_mail ; Jianhua Zhangb ; 1 ; jhzhang@cuhk.edu.hk" class="auth_mail
- 关键词：Water-saving and drought-resistant rice (Oryza sativa L.) ; Root morpho-physiological traits ; Grain filling ; Alternate wetting and drying ; Grain yield ; Water productivity.
- 刊名：Field Crops Research
- 出版年：June 2014
- 年：2014
- 卷：162
- 期：Complete
- 页码：108-119
- 全文大小：1580 K
文摘
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Water-saving and drought-resistant rice (WDR) showed higher water productivity than paddy rice under water-saving irrigation.
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WDR had better root morpho-physiological performance than paddy rice, such as greater root length density and active absorption area.
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WDR could maintain a higher root activity during soil-drying and more recovery functions during re-watering.
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The improved root traits in WDR benefits shoot physiological processes, leading to higher grain yield and water productivity.