| 苜蓿叶片水杨酸含量与其蓟马抗性的关系 |
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| 引用本文： | 刘玉良,米福贵,特木尔布和,王普昶,马小廷.苜蓿叶片水杨酸含量与其蓟马抗性的关系[J].西北植物学报,2011,31(3):588-594. |
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| 作者姓名： | 刘玉良 米福贵 特木尔布和 王普昶 马小廷 |
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| 作者单位： | 内蒙古农业大学,生态环境学院,呼和浩特,010019 |
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| 摘 要： | 采用不同抗蓟马特性的苜蓿品系,于不同蓟马虫口密度下测定苜蓿水杨酸含量和虫害程度,以明确苜蓿叶片水杨酸含量与其抗蓟马特性的关系.结果表明,苜蓿叶片游离态、结合态水杨酸含量均与苜蓿抗蓟马特性密切相关;高抗品系(抗蓟马品系)的水杨酸初始含量(0.539 mg·g-1)高于低抗品系(0.403 mg·g-1);与较低抗品系相比,高抗品系受害器官(叶)水杨酸含量随虫口密度和危害点面积的增大而增加相对缓慢,而随危害指数的增大而增加较快(3.84倍).可见,水杨酸主要是间接增强苜蓿对蓟马的抗性;高抗蓟马苜蓿品系能通过快速获得较高水杨酸含量来阻碍被危害伤口的扩大,降低其受危害程度,促使自身产量和品质提高.
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| 关 键 词： | 关联性 苜蓿 抗蓟马特性 水杨酸含量 病虫危害指数 |
Relationship between Alfalfa Salicylic Acid Content and Its Thrips Resistance |
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| LIU Yu-liang,MI Fu-gui,TE Muerbuhe,WANG Pu-chang,MA Xiao-ting.Relationship between Alfalfa Salicylic Acid Content and Its Thrips Resistance[J].Acta Botanica Boreali-Occidentalia Sinica,2011,31(3):588-594. |
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| Authors: | LIU Yu-liang MI Fu-gui TE Muerbuhe WANG Pu-chang MA Xiao-ting |
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| Institution: | LIU Yu-liang,MI Fu-gui,TE Muerbuhe,WANG Pu-chang,MA Xiao-ting(College of Ecology and Environmental Science,Inner Mongolia Agricultural University,Hohhot 010019,China) |
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| Abstract: | The relationship between the content of salicylic acid in alfalfa and its anti-thrips property was investigated in detecting the content of salicylic acid and damage level of insect pest according to the different density of thrips in different anti-thrips alfalfa.The results showed that the anti-thrips property of alfalfa was closely related to the free salicylic acid,bound salicylic acid and the total content of salicylic acid.The initial content of salicylic acid in high-level(thrips resistant strains) r... |
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| Keywords: | correlation alfalfa thrips resistance salicylic acid content pests index |
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