芒果炭疽病生态位研究  

Niche of Mango Anthracnose

作　　者：肖厚贞[1,2] 方佳[2] 王绥通 刘志威[3] 林运萍[3] 

机构地区：[1]海南大学公共实验中心,海南儋州571737 [2]中国热带农业科学院科技信息研究所,海南儋州571737 [3]海南省农垦总局,海口570000

出　　处：《湖北农业科学》2009年第2期340-342,共3页Hubei Agricultural Sciences

基　　金：科技部公益性基金资助(2004DIB4J139)

摘　　要：以叶片和果实病情指数为依据,研究了海南省7个芒果品种的炭疽病生态位。结果表明,芒果炭疽病对叶片和果实的侵染效应差别较小,对时间、空间和营养3资源的利用程度不尽相同。时间生态位宽度指数(平均值)分别为0.1177和0.2639,说明芒果炭疽病在时间维上的利用程度小,其发生和发展具有条件性;空间生态位宽度指数(平均值)为0.7047和0.9040,病菌能够充分利用各空间资源;营养生态宽度指数为0.6662和0.5796,说明病菌可以侵染各品种,但品种间的抗病性有较明显差异,台农1号抗病性较强,红芒6号、凯特和白玉较易感病。This paper studied niche of mango anthracnose according to disease index of leaf and fruit about seven cultivars in Hainan province. The results showed that effect of infection on leaf and fruit was finely discriminating, while the using capability to resource was different. The average of temporal niche breadth of mango anthracnose was 0.1177 according to disease index of leaf ,while 0.2639 according to disease index of fruit. That suggested that breaking out of mango anthracnose was conditional. The average of spatial niche breadth was 0.7047 （leaf） and 0.9040 （fruit）. The Indexes were higher and meant that mango anthracnose could inhabit four orientations. Nutritional niche breadth were 0.6662 on base of disease of leaf, while 0.5796 on fruit disease. The data showed that anthracnose could attack seven cultivars, but capability of resisting anthracnose was very dissimilar, Tainong No.1 was the most resistant, Red mango No.6, Baiyu and Keitt were susceptible.

关 键 词：芒果炭疽病 生态位 时间 空间 营养 

分 类 号：S511[农业科学—作物学]