三角梅对盐胁迫的响应研究  

Responses of Bougainvillea to Salt Stress

作　　者：王振[1] 丁印龙[2] 董怡然[2] 杨盛昌[1] 

机构地区：[1]厦门大学环境与生态学院,福建厦门361005 [2]厦门市园林植物园,福建厦门361003

出　　处：《亚热带植物科学》2015年第2期91-95,共5页Subtropical Plant Science

基　　金：厦门市科学技术局项目(3502Z20124013)

摘　　要：长期盐胁迫处理实验表明,随着Na Cl浓度增加,不同三角梅品种的地上部和地下部生物量均呈下降趋势。与对照相比,盐浓度为5%时,勤花三角梅生物量下降幅度最小,为27.94%;樱花三角梅下降最大,为67.03%。当盐浓度为4%时,樱花三角梅、白苞三角梅和勤花三角梅的光量子产量分别为0.36、0.30和0.36,分别为对照的78.23%、79.64%和74.82%;金心鸳鸯三角梅的光量子产量为0.05,仅为对照的15.53%。白苞三角梅的光化学猝灭系数q P值随着盐浓度的升高无明显变化;金心鸳鸯三角梅、勤花三角梅和樱花三角梅的q P值随着盐浓度的升高而降低。4个三角梅品种的抗盐胁迫能力为:白苞三角梅>樱花三角梅>勤花三角梅>金心鸳鸯三角梅。The long-term Na Cl salt stress experiments showed that with the increasing of Na Cl concentration, shoot and root biomass of different Bougainvillea cultivars were decreased. At 5% Na Cl concentration, biomass of ‘Miss Manila＇ had the least decline of 27.94%; however, ‘Imperial Delight＇ had the largest decline of 67.03%, compared with the control. When the Na Cl concentration was 4%, the quantum yield of ‘Imperial Delight＇, ‘Shubhra＇ and ‘Miss Manila＇ were 0.36, 0.30 and 0.36, with 78.23%, 79.64% and 74.82% of the control, respectively; the quantum yield of ‘Thimma＇ was 0.05, only 15.53% of the control. With the increasing of Na Cl concentration, photochemical quenching coefficient q P of ‘Shubhra＇ had no obvious change; but q P value of ‘Thimma＇, ‘Miss Manila＇ and ‘Imperial Delight＇ decreased significantly. The resistance ability to Na Cl salt stress of four Bougainvillea cultivars was ‘Shubhra＇ 〉‘Imperial Delight＇〉 ‘Miss Manila＇ ‘Thimma＇.

关 键 词：三角梅 盐胁迫 叶绿素荧光 生长 

分 类 号：Q945.7[生物学—植物学]