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绿盲蝽为害不同茶树种质的物理和化学特性分析

Physical and Chemical Properties of Different Tea Germplasms Damaged by Apolygus lucorum

  • 摘要: 2024年春季同一时期调查相同生态环境下的48份茶树种质的物理性状和绿盲蝽为害率,采集3个物理性状同类种质的一芽二叶并测定其化学成分,探究绿盲蝽为害不同茶树种质的差异性和特性。结果表明:不同茶树种质间存在显著差异。N7的总为害率最高(91.76%),黄旦最低(0.45%)。绿盲蝽为害主要与茶叶的叶色、叶质和叶面等物理性状呈显著或极显著负相关。N23、浙农113和ZX32的危害指数与酚氨比、EGC、EC含量呈极显著或显著正相关,与GCG含量呈显著负相关;氨基酸总量、EC含量随着绿盲蝽为害程度的加深而减少,GCG含量随着为害程度的加深呈上升趋势。物候期晚、叶质硬、叶色深、叶面隆起、高酚氨比、高EGC、高EC和低GCG的茶树种质适合作为抗绿盲蝽的茶树种质。

     

    Abstract: In the spring of 2024, during the same period, the physical traits of 48 different tea germplasm in the same plot of tea garden and damage caused by Apolygus lucorum(Meyer-Dür) were investigated. One bud and two leaves of three similar physical traits tea germplasm were collected for the determination and analysis of chemical components. The differences and characteristics of different tea germplasm damaged by A. lucorum were studied. The results showed that there were significant differences in damage among different tea germplasm. The total damage rate of N7 was the highest(91.76%), while that of Huangdan was the lowest(0.45%). The damage caused by A. lucorum was mainly significantly or extremely significantly related to leaf color, leaf texture and leaf surface. The damage indexes of N23, Zhenong 113 and ZX32 were significantly positively correlated with the phenol-ammonia ratio, EGC and EC contents, and significantly negatively correlated with GCG. The contents of amino acids and EC decreased with the deepening of the damage degree, while GCG increased with the deepening of the hazard degree. The tea germplasms with late phenological periods, hard leaves, dark leaf color, raised leaf surfaces, high phenolto-ammonia ratio, high EGC, high EC and low GCG are suitable as tea germplasms resistant to A. lucorum.