两个紫薇品种引种栽培及逆境胁迫下脯氨酸含量分析  

Introduction Experiment and Analysis on Proline Contents in Two Lagerstroemia indica Varieties Under Condition of Stresses

作　　者：曾慧杰[1,2,3] 王晓明[1,2,3] 李永欣[1,2,3] 蔡能[1,2,3] 乔中全[1,2,3] 

机构地区：[1]湖南省林业科学院,湖南长沙410004 [2]湖南省林木无性系育种重点实验室,湖南长沙410004 [3]湖南富林生物科技有限公司,湖南长沙410004

出　　处：《北方园艺》2015年第16期67-72,共6页Northern Horticulture

基　　金：国家林业局"948"资助项目(2003-4-26)

摘　　要：以美国"红火箭"、"红火球"2个大红色紫薇新品种为试材,开展品种比较试验,研究了其生长和开花特性;并采用脯氨酸测定分析方法,研究了体内脯氨酸含量对植株抗逆性的影响。结果表明:栽植4年后"红火箭"和"红火球"的树高和地径分别比对照普通红花紫薇高9.2%、16.0%和15.3%、18.7%;"红火箭"花色鲜红(RHS 46B),花径4.1cm,花序长25.1cm,"红火球"花色猩红(RHS 46A),花径4.5cm,花序长35.1cm;在湖南地区这2个品种6月中旬始花,花期达4个月,着花密度大,均优于对照品种;干旱胁迫下,脯氨酸含量均是先升高后降低,"红火箭"含量最高,耐旱能力为"红火箭">"红火球">普通红花紫薇;水涝胁迫下,脯氨酸含量均呈"下降-上升-下降"的变化趋势,"红火球"峰值最大,耐涝能力为"红火球">"红火箭">普通红花紫薇;低温胁迫下,离体叶片中脯氨酸含量最高的是"红火箭",抗寒能力为"红火箭">"红火球">普通红花紫薇。‘Red Rocket＇and‘Dynamite＇were introducted from United States.Their growth and flowering characteristics were analysed through variety test.The influence of proline content on the resistance of plants was researched by proline measurement and analysis method.The results showed that plant height of 4-year-old‘Red Rocket＇and‘Dynamite＇,respectively,9.2%and 16.0% were highter than control;ground diameter of 4-year-old‘Red Rocket＇and‘Dynamite＇,respectively,15.3%and 18.7% were thicker than control;the flower color of‘Red Rocket＇was bright red（RHS 46B）and‘Dynamite＇was scarlet（RHS 46A）,flower diameter were 4.1cm and 4.5cm,length of inflorescence were 25.1cm and 35.1cm.The florescence was from the middle of June to november,lasted four months,the flowers density were very high.Proline content increased first,then decreased under drought,the order of drought tolerance was：‘Red Rocket＇〉‘Dynamite＇〉control,proline content were‘down-up-down＇trend under water-logging stress,the order of water-logging tolerance was：‘Dynamite＇〉‘Red Rocket＇〉control,leaves in vitro of‘Red Rocket＇had higher proline content under freezed,the order of cold tolerance was：‘Red Rocket＇〉‘Dynamite＇〉control.

关 键 词：紫薇 引种 抗逆性 脯氨酸 

分 类 号：S722.7[农业科学—林木遗传育种]