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利用原子辐射诱导农作物发生变异,并从中进行新品种的选育称为辐射育种。辐射育种是人工诱变育种主要方法之一,辐射处理简便易行,辐射引起的突变稳定较快,射线引起有机体的变异较大,它能引起形态学、解剖学和生态学特征等方面的深刻变异,表现在茎秆增强、株高变矮、穗子紧密、千粒重增加、提早成熟、品质改善、抗病性增强等有利突变方面。利用射线处理可使突变率提高到3%(即突变体占处理个体的百分率),比自然突变率高出100倍以上,甚至达1000倍。而且突变类型也常超出一般的变异范围,能
The use of atomic radiation induced variation in crops, and from which the breeding of new varieties known as radiation breeding. Radiation breeding is one of the main methods of artificial mutagenesis. Radiation treatment is simple and easy. Radiation-induced mutations are stable, and the variation of organisms caused by radiation is large. It can cause profound morphological, anatomical and ecological characteristics Variation, manifested in the stalk enhanced short stature, ears close, increased grain weight, early maturity, quality improvement, disease resistance and other favorable mutations. The use of ray treatment can increase the mutation rate to 3% (ie, mutant percentage of individuals treated), more than 100 times higher than the natural mutation rate, or even up to 1000 times. And mutation types often exceed the general range of variation, can