Effects of different drought manners and different water availabilities on root growth of maize(Zea Mays) seedlings
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DOI:10.7606/j.issn.1000-7601.2008.05.31
Key Words: maize(Zea mays L.)  root growth  drought manner  water availability
Author NameAffiliation
LI Bo Center of Crop Chemical Control, Key Laboratory of Crop Cultivation and Farming System, State Key Laboratory of National Plant Physiology and Biochemistry, China Agricultural University, Beijing 100094, China 
WANG Gangwei Center of Crop Chemical Control, Key Laboratory of Crop Cultivation and Farming System, State Key Laboratory of National Plant Physiology and Biochemistry, China Agricultural University, Beijing 100094, China 
TIAN Xiaoli Center of Crop Chemical Control, Key Laboratory of Crop Cultivation and Farming System, State Key Laboratory of National Plant Physiology and Biochemistry, China Agricultural University, Beijing 100094, China 
DONG Xuehui Center of Crop Chemical Control, Key Laboratory of Crop Cultivation and Farming System, State Key Laboratory of National Plant Physiology and Biochemistry, China Agricultural University, Beijing 100094, China 
ZHANG Mingcai Center of Crop Chemical Control, Key Laboratory of Crop Cultivation and Farming System, State Key Laboratory of National Plant Physiology and Biochemistry, China Agricultural University, Beijing 100094, China 
WANG Baomin Center of Crop Chemical Control, Key Laboratory of Crop Cultivation and Farming System, State Key Laboratory of National Plant Physiology and Biochemistry, China Agricultural University, Beijing 100094, China 
DUAN Liusheng Center of Crop Chemical Control, Key Laboratory of Crop Cultivation and Farming System, State Key Laboratory of National Plant Physiology and Biochemistry, China Agricultural University, Beijing 100094, China 
LI Zhaohu Center of Crop Chemical Control, Key Laboratory of Crop Cultivation and Farming System, State Key Laboratory of National Plant Physiology and Biochemistry, China Agricultural University, Beijing 100094, China 
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Abstract:
      The objective of this study is to investigate the effects of progressive drought and direct drought on root growth of maize seedlings subjected to well watered, moderate water stress and severe water stress, respectively, with hybrid maize Gaoyou 115. The results indicated that moderate water stress (55% FC) was the most advantages for root growth in conditions of progressive drought, while well watered (75% FC) was the most favor in conditions of direct drought. When the root system was sorted into fine roots (0.05 mm