【摘 要】
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The genetic and molecular basis of heterosis has eluded a consensus explanation for nearly a century.One common explanation is that slightly deleterious mut
【机 构】
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UniversityofMissouri,Columbia,MissouriUSA
【出 处】
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2007年国际多倍体杂种优势及表观遗传学大会
论文部分内容阅读
The genetic and molecular basis of heterosis has eluded a consensus explanation for nearly a century.One common explanation is that slightly deleterious mutations that differ between parents are complemented in the hybrid to produce superior characteristics.However,several lines of evidence from comparing diploid,triploid and tetraploid responses to the hybrid state suggest that a dosage component is involved and that complementation alone is inadequate to explain heterosis fully.In triploid maize,there can be two types of hybrids (AAB and BBA) resulting from two parental genotypes.
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