云南3个主要栽培东方百合品种盐胁迫的生理和开花响应差异

The different responses of physiology and flowering of three main cultivars of oriental hybrid to salt stress in Yunnan

提拔(Tiber)、索尔邦(Sorbonne)、西伯利亚(Siberia)是云南地区东方百合切花的3个主要栽培品种.本研究通过比较其在0.05%、0.10%、0.15%和0.20%NaCl质量分数下的形态、生理和开花的响应差异,以确定其中耐盐胁迫的品种.结果表明,NaCl处理抑制了3个品种东方百合基径、株高、叶面积、茎干重、叶干重、开花数、花苞基径、花苞长度、叶绿素含量;增加了类胡萝卜素、丙二醛和脯氨酸含量.3个品种在0.20%NaCl处理下均不能存活.0.15%NaCl质量分数为本研究中最大的耐盐胁迫浓度.0.15%NaCl质量分数下,3个品种中Tiber的株高、叶面积、茎干重、叶干重、叶绿素a、开花数减少最小;丙二醛增加最少;类胡萝卜素含量和游离脯氨酸含量增加最多.使用隶属函数法评价得出3个百合品种耐盐性从强到弱为Tiber>Sorbonne>Siberia.

Tiber,Sorbonne and Siberia are the three main cultivars of oriental lily flowers in Yunnan.The differences responses of morphophysiology and flowering of the three cultivars which were applied to 0.05%,0.10%,0.15% and 0.20% NaCl concentrations treatments were compared to determine the resistance to salt stress.The results showed that none of the three varieties survived at 0.20% NaCl treatment.When the three cultivars of oriental lily were applied to 0.05%,0.10% and 0.15% NaCl treatment,the base diameter,plant height,leaf area,stem dry weight,leaf dry weight,flowering number,flower base diameter,flower length,and chlorophyll content were decreased with the NaCl concentration increased.The content of carotenoid,malondialdehyde and proline were increased.The 0.15% NaCl concentration was the maximum salt tolerance concentration in this study.The reduced amount of the height,leaf area,stem dry weight,leaf dry weight,chlorophyll a and flowering number of Tiber was the less than the other cultivars at 0.15% NaCl treatment.And the content of malondialdehyde of Tiber was increased less than Sorbonne and Siberia,the content of carotenoid and free proline increased more than the other cultivars.The values of subordinate function were used to evaluate the salt tolerance among different lily cultivars.The salinity tolerance for those cultivars was Tiber>Sorbonne>Siberia.