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《Plant Fiber Sciences in China》 2018-01
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Physiological and Biochemical Responses of 3 Ramie Varieties to Drought Stress

LI Linlin;MA Yuanbo;ZHANG Lang;SU Xiaohui;CUI Dandan;WANG Jilong;YANG Ruifang;SHE Wei;CUI Guoxian;Ramie Research Institute of Hunan Agricultural University;Shanghai United Self Biological Engineering Co,LTD;Institute of Bast Fiber Crops,Chinese Academy of Agricultural Sciences;  
In this research,we selected Zhongzhu-1,Tri-1 and Xiangzhu-7 to study the growth and physiological characteristics of these 3 ramie varieties under soil drought stress with four different soil content levels:normal water supply(75%~80%of capacity,CK),continuous droughts of 6 d,continuous droughts of 12 d,continuous droughts of 24 d.The result showed that drought stress can affect the growth of ramie,resulting in lower growth rate.The degree of wilting of ramie was positively correlated with drought stress duration.With the increasing of continuous drought stress,the degree of growth rate,leaf SPAD value,root activity of three ramie varieties affected was:Tri No.1Zhongzhu No.1Xiangzhu No.1.Under PD_(12)treatment,the POD value of Tri-1 reached the peak,and that of Zhongzhu No.1and Xiangzhu No.7 was positively correlated with drought stress duration.The impact on ramie was increased with the duration of the stress,and there were differences among different ramie varieties.Comprehensive analysis displayed that under the persistent drought conditions,the drought resistances for the3 ramie varieties were Xiangzhu No.7Zhongzhu No.1Tri No.1.
【Fund】: 现代农业产业技术体系“国家麻类产业技术体系土壤肥料岗位”(CARS-19-E20)
【CateGory Index】: S423;S563.1
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