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首页> 外文期刊>Nematropica >IMPACT OF WHEAT ON MELOIDOGYNE GRAMINICOLA POPULATIONS IN THE RICE-WHEAT SYSTEM OF BANGLADESH
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IMPACT OF WHEAT ON MELOIDOGYNE GRAMINICOLA POPULATIONS IN THE RICE-WHEAT SYSTEM OF BANGLADESH

机译：孟加拉邦水稻-小麦系统中小麦对谷类扇贝种群的影响

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A soil bioassay, using rice as an indicator plant, and a host susceptibility experiment were conducted to investigate the impact of wheat on population densities of Meloidogyne graminicola in a rice-wheat rotation area of Bangladesh. The bioassay revealed widespread infestations of M. graminicola following wheat harvest. Root-galling severity ratings on a 1 to 9 scale for all 18 fields tested ranged from 1.5 to 7.0 with a mean of 4.8. Root-galling severity in rice nursery seedbeds ranged from 1.0 to 4.4 with a mean of 3.3. In the host susceptibility experiment, all wheat varieties commonly cultivated in ricewheat rotation areas of Bangladesh were determined to be excellent hosts to M. graminicola. The reproduction on wheat roots was 26.4 to 57.9 times the initial nematode population density. The results of these two experiments indicate that wheat is contributing to high population densities of M. graminicola in soil which can negatively impact rice, and possibly wheat, productivity in a rice-wheat rotation.
机译：进行了以水稻为指示植物的土壤生物测定和寄主敏感性试验，以研究小麦对孟加拉国稻麦轮作区麦格诺麦格米尼科拉种群密度的影响。生物测定显示，小麦收获后广泛感染了禾本科分枝杆菌。所有18个试验田的根gal严重性等级为1到9，范围为1.5到7.0，平均值为4.8。水稻育苗床根gal的严重程度在1.0到4.4之间，平均为3.3。在寄主敏感性试验中，确定在孟加拉国稻麦轮作区普遍种植的所有小麦品种均是格拉氏莫拉氏菌的优良寄主。小麦根部的繁殖量是线虫初始种群密度的26.4至57.9倍。这两个实验的结果表明，小麦在土壤中引起了高分枝杆菌的种群密度，这可能对稻麦轮作产生负面影响，甚至可能影响小麦的生产力。

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