Effect of water stress on leaf water potential and leaf holding water capacity in seedlings of the different tree species | 水分胁迫对4树种幼苗叶水势和持水力的影响
2009
Shi Shengqing, Chinese Academy of Forestry, Beijing(China),Institute of Forestry Research | Sun Xiaoguang, Transportation Bureau of Baoding, Baoding(China),Highway Administration | Wang Ying, Agricultural University of Hebei, Baoding(China), College Forestry
chinois. 以皂荚（Gleditsia sinensis）、核桃（Juglans regia）、柿子（Diospyros kaki）和黑枣（Diospyros lotus）为材料,在田间持水量为80%、60%、40%和30%的条件下对4树种幼苗叶含水量、叶水势和叶持水力进行了研究。结果表明：严重水分胁迫下,4树种叶含水量降低幅度是核桃〈柿树〈皂荚〈黑枣,核桃和柿树能够保持较高的叶水势,而皂荚和黑枣的叶水势则比较低;充足供水条件下,4树种叶持水力是皂荚〉核桃〉柿树〉黑枣,水分胁迫诱导了皂荚、柿树和黑枣叶片持水力的提高,而耐旱的核桃却没有明显的变化。[著者文摘]
Afficher plus [+] Moins [-]anglais. Leaf water content,leaf water potential and leaf holding water capacity of four tree seedlings（Gleditsia sinensis,Juglans regia,Diospyros kaki and Diospyros lotus） were studied under four water stress treatments： 80%,60%,40% and 30% of soil field capacity.The results showed that the range of decrease in leaf water content of four trees was J.regia〈D.kaki〈G.sinensis〈D.lotus under severe water stress（30%）,and leaf water potential of J.regia and D.kaki could maintain the higher level,but that of G.sinensis and D.lotus was lower under severe water stress;leaf holding water capacity of four trees was G.sinensis〉J.regia〉D.kaki〉D.lotus under normal condition（80%）,but,it was prompted in G.sinensis,D.kaki and D.lotus,instead of J.regia under water stress.
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