摘要:
比较茶蚜对14个茶树品种的选择性,并分析茶树叶片组织结构与茶蚜对茶树品种选择性的关系,结果 表明:①有蚜梢率(%)、蚜量比值、蚜情指数3个指标相关性显著,用这3个指标来衡量茶蚜对不同品种的选择性是可行的;②有蚜梢率(%)、蚜量比值、蚜情指数3个指标均与茶树叶片气孔密度呈显著正相关,与下表皮厚度、下表皮角质层厚度、栅栏组织厚度呈显著负相关,与叶片茸毛长度和密度、叶片总厚度、叶片海绵组织厚度之间无显著相关性;③气孔密度、下表皮厚度、下表皮角质层厚度、栅栏组织厚度是构成茶蚜对茶树种质选择性的重要因子。
关键词:
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茶树 /
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品种(种质) /
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组织结构 /
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茶蚜 /
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选择性
Abstract:
The selectivity of tea aphid on fourteen tea cultivars was elevated,and the relationship between Tea Leaf Structure and selectivity of tea aphids on tea germplasms was analyzed.Our results showed that:① Aphid shoot rate(%),aphid number ratio,aphid sentiment index are feasible to measure the selectivity of tea aphid on different cultivars.② Aphid shoot rate(%),aphid number ratio,aphid sentiment index have a strong positive correlation with the stoma density while negative with the thickness of subepidermis,the thickness of cuticular layer on subepidermis,the thickness of palisade tissue of tea leaf,and no significant correlation with the pubescence length and density,the leaf thickness,the thickness of spongy tissue of tea leaf.③ The stoma density,the thickness of subepidermis,the thickness of the cuticular layer on subepidermis,the thickness of palisade tissue is significant factors on the selectivity of tea aphids on tea germplasms.
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