Striga on rice in West Africa; Crop host range and the potential of host resistance
Striga on rice in West Africa; Crop host range and the potential of host resistance
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DOI：
10.1016/s0261-2194(96)00079-8
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发表时间：
1997-03-01
期刊：
影响因子：
2.8
通讯作者：
Jones, MJ
中科院分区：
文献类型：
--
作者：
Johnson, DE;Riches, CR;Jones, MJ
独脚金和黑独脚金会给西非几内亚稀树草原地区的旱稻造成严重损失。在盆栽试验中，将从科特迪瓦北部的玉米和水稻作物中采集的独脚金种子与玉米、水稻、磨粉机和高粱一起播种。 S. aspera 从水稻和玉米中采集，在玉米、高粱和水稻上生长，但在磨粉机上不生长。来自迷宫、高粱或水稻的 S. hermonthica 没有表现出特异性，并且寄生于所有四种测试作物。 S. asiatica 从玉米和 Andropogon sp 中采集。生长在玉米和水稻上，但不生长在小米上。在田间试验中，5 个水稻品种和两个水稻品种 TR47255-B-B-5-4 和 IR49255-B-B-5-2 对 S. aspera 具有部分抗性。这些水稻品种还表现出较低的 S.hermonthica 寄生水平。 17株独脚金茎m(-2)寄生水稻，使水稻籽粒减产约50%。与敏感的苜蓿品种相比，光斑稻的生长似乎较少受到独脚金寄生的影响。 (C) 1997 爱思唯尔科学有限公司。
Striga aspera and Striga hermonthica can cause serious losses in upland rice in the guinea savanna areas of West Africa. In pot experiments, seed from Striga spp., collected from maize and rice crops in northern Ivory Coast, were sown with maize, rice, miller and sorghum. S. aspera collected from rice and maize, grew on maize, sorghum and rice, but not on miller. S. hermonthica from either maze, sorghum or rice showed no specificity and parasitized all four test crops. S. asiatica collected from maize and Andropogon sp. grew on maize and rice, but not on millet. In field experiments, five cultivars of Oryza glaberrima and two cultivars of Oryza sativa, TR47255-B-B-5-4 and IR49255-B-B-5-2, offered partial resistance to S. aspera. These rice cultivars also showed lower levels of parasitization by S. hermonthica. Parasitization of rice by 17 Striga stems m(-2), reduced rice grain yield by about 50%. Growth of O. glaberrima appeared to be less affected by Striga parasitization than a susceptible O. sativa cultivar. (C) 1997 Elsevier Science Ltd.