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Heading date determines rice’s adaptation to its area and cropping season. We analyzed the molecular evolution of the Hd6 quantitative trait locus for photoperiod sensitivity in a total of 20 cultivated varieties and wild rice species and found 74 polymorphic sites within its coding region (1,002 bp), of which five were nonsynonymous substitutions. Thus, natural mutations and modifications of the...
Background Magnaporthe oryzae, the causal fungus of rice blast disease, negatively impacts global rice production. Wild rice (Oryza rufipogon), a relative of cultivated rice (O. sativa), possesses unique attributes that enable it to resist pathogen invasion. Although wild rice represents a major resource for disease resistance, relative to current cultivated rice varieties, no prior studies have compared...
Background Rice, which serves as a staple food for more than half of the world’s population, is very susceptible to the pathogenic fungus, Magnaporthe oryzae. However, common wild rice (Oryza rufipogon), which is the ancestor of Asian cultivated rice (O. sativa), has significant potential as a genetic source of resistance to M. oryzae. Recent studies have shown that the domestication of rice has altered...
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