10个树种光合和蒸腾性能对水分胁迫的响应.pdfVIP

2005, 20( 2): 36~ 38 Journal ofNorthwest Forestry Un iversity * 10 ** 范杰英, 郭军战 , 彭少兵 (, 712100) : 研究了 10 个树种 一年生实生苗主要光合和蒸腾性能对根际水分胁迫的响应在水分 胁迫 件下, 其生理过程均受到显著影响, 不同树种对水分胁迫的响应不同, 树种间响应值的 变化表明其抗旱性的差别, 将其响应值用模糊数学隶属函数统计方法进行综合评判得出: 金链 树紫穗槐香椿木瓜抗旱能力较强; 沙枣杜仲柠 国槐次之; 葛藤合欢抗旱能力较差 : 水分胁迫; 净光合速率; 蒸腾速率; 气孔导度; 抗旱性 : S718. 48 : A : 2005) Photosynthesis and Trans iration Res onse ofTen Tree S ecies in the toW ater Stress FAN Jieying, GUO Junzhan, PENG Shaobin ( Colleg e of Forestry, N orthw est A F University, Yang ling, Shaanx i 712100, Ch ina) Abstracter: The res onse ofmain hotosynthesis and trans iration indexes of ten tree s ecies in the north- w est of ch ina to w ater stress at rh izos here w as investigated w ith oneyearold seedlings. The hysiological indexesw ere significantly affected byw ater stress. Each s ecies show ed different hotosynthesis and trans iration res onse to w a ter stress. The res onse index of different s ecies re resented their resistant ca ability tow ater stress. The index a nalysis of ten tree s ecies by com arison and statistics of subject function show ed thatLaburnum al inum, Amor ha f ruticosa, Toona sinensis, Chaenomeles s eciosa had strong drought resistance; E laeagnus angustfi olia, Eucomm ia ulmo ides, Caragana korshink ii w ere in the m iddle level andP ueraria thunbergiana, A lbizzia j ulibrissin had a oor resistance. K ey words: net hotosynthesis rate; trans iration rate; stomata conduc;t drought resistance , , cm , (= 2 1) 2, , 2004 4 ,