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期 刊 ：植物保护学报 2010年

关键词：绿盲蝽；危害；寄主植物；生理指标；

Keywords:Lygus lucorum, damage, host plants, physiological index,

摘 要 ：以绿盲蝽偏好程度不同的5种寄主植物为材料,利用生物化学方法分析了受绿盲蝽危害后各寄主体内生理代谢指标的变化。结果表明,受害后各寄主植物体内叶绿素与蛋白质含量均有不同程度的下降,下降率在10%～40%之间。可溶性糖含量的变化较大,绿盲蝽偏好程度较高的苜蓿与绿豆,糖含量较未受害对照分别高62.10%和31.90%,差异达显著水平。受害后除Bt棉体内游离脯氨酸含量明显下降外,其它寄主脯氨酸含量均增加,以大豆增加最显著(53.47%)。受害后寄主植物体内3种保护酶活性有增有减,但活性变化与偏好程度呈正相关性,5种寄主植物体内POD活性均增加,其中苜蓿增加最多(133.00%),仅大豆体内SOD活性下降(3.17%),苜蓿、大豆、甜叶菊体内CAT活性均下降。

Abstract:Using biochemical analysis method, the changes of physiological indices of five different host plants which Lygus lucorum prefers differently were studied. After the host plants were infested by L.lucorum, both the chlorophyll and protein contents decreased 10% -40%. Soluble sugar contents in alfalfa and mung bean increased 62.10% and 31.90%, respectively. Proline contents increased in all host plants except for Bt cotton, especially the soybean increased 53.47%. The POD activities in all host plants increased, as well as the SOD activities except soybean, which decreased 3.17%, the CAT activities, however, decreased in the host plants of alfalfa, soybean and stevia.

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