| 柑桔根系接触与黄龙病传播关系的研究 |
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| 引用本文： | 徐长宝,杜育映,邓文胜,黄金萍,邓晓玲,岑伊静.柑桔根系接触与黄龙病传播关系的研究[J].中国果业信息,2015,44(4). |
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| 作者姓名： | 徐长宝 杜育映 邓文胜 黄金萍 邓晓玲 岑伊静 |
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| 作者单位： | 华南农业大学园艺开发公司,广东省博罗县柑桔研究所,广东博罗县柑桔研究所,华南农业大学农学院昆虫学系,华南农业大学农学院植物病理学系,华南农业大学农学院昆虫学系 |
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| 基金项目： | 公益性行业(农业)科研专项“柑桔黄龙病和溃疡病综合防控技术研究与示范”(201003067)和广东省科技计划项目“广东省柑桔黄龙病防控技术集成与示范”（2012A020200016） |
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| 摘 要： | 黄龙病是柑桔最严重的传染性病害，其病原菌在病株地上各部位和根部均有分布，主要通过病芽嫁接和柑桔木虱Diaphorina citri Kuwayama进行传播。本文研究了黄龙病通过柑桔根部传病的可能性，结果表明，将感染黄龙病的红皮山桔苗与健康沙糖桔苗直接合种在一起，3年后健苗均没有发病；但是将病苗、健苗的侧根表面切除、相互连接绑缚合种在一起6个月后发现，30株健苗中有1株感染了黄龙病，9个月后感染数达到9株，12个月后为11株，感染率达36.67%，说明病树、健树根系直接交叉生长并不能传播黄龙病，但通过病根嫁接、病健苗的根系生长融合在一起则可以导致病原的传播，即病根嫁接与病芽嫁接一样具备传播黄龙病的能力，而且传播效率较高。
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| 关 键 词： | 黄龙病 柑桔 根系 嫁接 传病 |
| 收稿时间： | 2015/4/4 0:00:00 |
| 修稿时间： | 2015/4/30 0:00:00 |
Study on the possibility of the root transmission of huanglongbing |
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| Abstract: | Huanglongbing (HLB) is the most destructive disease of citrus. The pathogeny of this disease not only distributes in the whole aerial parts, but also in the root of the infected citrus. It is mainly transmitted by bud grafting and vector insect pest, Diaphorina citri Kuwayama. In this research, the transmission possibility of the infected root was studied. The result showed that HLB was not transmitted by planting the infected and healthy citrus young plants directly together even after 3 years. But among the 30 tested- healthy young plants, 1 became infected after the root being grafted with the root of the infected plant for 6 months. Night healthy plants were infected after 9 months, 11 plants were infected and the total infected rate reached 36.67% 1 year after root grafting. The result demonstrates that infected root can not transmit HLB directly, but root grafting has the ability of transmission of this disease. |
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| Keywords: | huanglongbing citrus root grafting disease transmission |
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