一、诱发突变在水稻育种中的作用(一)诱变育种的优点1.对于一个已育成的品种来说,可以在不改变基因型的其它部分的情况下,获得个别性状的有利的特殊变异。这些性状变异可能是:矮秆、抗倒伏、抗病、抗虫、改进籽粒品质(蛋白质和氨基酸含量)和早熟等。2.能够诱发出多基因变异以改进数量性状(如产量)。 I. The Role of Induced Mutations in Rice Breeding 1. The Advantages of Mutagenesis Breeding 1. For a bred breed, favorable special variations of individual traits can be obtained without changing the rest of the genotype . These trait variations may be dwarfing, lodging resistance, disease resistance, pest resistance, improving grain quality (protein and amino acid content) and precociousness. 2. Can induce multiple gene mutations to improve quantitative traits (such as yield).