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Allelopathic Potential of Wheat on Sourgrass Resistant to Glyphosate
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作者 Marcio Akira Ito Germani Concenco +7 位作者 Rodolpho Freire Marques Sabrina Alves dos Santos Maxwell Eliezer dos Santos Alves Waggner Gomes Palharini Thais Stradioto Melo Laryssa Barbosa Xavier Silva Larissa Tagara Linhares Samara Emerim Concenco 《American Journal of Plant Sciences》 2015年第7期891-898,共8页
We aimed with this study to assay the allelopathic potential of wheat genotypes in inhibiting germination and initial growth of sourgrass (Digitaria insularis) resistant to the herbicide glyphosate. Two experiments we... We aimed with this study to assay the allelopathic potential of wheat genotypes in inhibiting germination and initial growth of sourgrass (Digitaria insularis) resistant to the herbicide glyphosate. Two experiments were installed under greenhouse conditions: the first one aimed to assay the potential of wheat genotypes in inhibiting emergence and initial growth of two test plants, and the second aimed to evaluate the potential of those wheat genotypes which performed better at the first experiment, inhibiting the emergence and initial growth of sourgrass biotypes resistant to the herbicide glyphosate. Five doses of aqueous cool-extracted extract from 32 wheat genotypes were applied to tomato and cucumber (Experiment 1) aiming to identify the ones with higher inhibitory effect. The five most inhibitory wheat genotypes were selected for Experiment 2, where the same doses of extract were applied on sourgrass. For both experiments, shoot fresh and dry mass, as well as water content, were assessed. Sourgrass germination is affected by wheat extracts, but initial seedling growth seems not to be affected;wheat genotypes differ in terms of their allelopathic potential in inhibiting sourgrass germination;wheat presents little inhibitory effect on sourgrass. 展开更多
关键词 Triticum aestivum Digitaria insularis Herbicide Resistance SOYBEAN
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