Method for genetic improvement of rice fragrance quality

The invention discloses a method for carrying out genetic improvement on rice fragrance quality, which comprises the steps of crossbreeding and mutation breeding, the combination mode and mutation type of various genes in a Yuefeng B genome are changed by combining crossbreeding and mutation breeding, so that the expression environment of fragrance genes is changed, and the rice fragrance quality is improved by screening. Genetic improvement is carried out on the fragrance quality of the rice on the basis of not changing fragrance genes, the content of fragrance substances is remarkably increased, and a basic material is provided for breeding of fragrant rice and super rice. 本发明公开了一种对水稻香味品质进行遗传改良的方法，包含杂交育种与诱变育种步骤，本发明通过将杂交育种和诱变育种相结合的方式，改变了粤丰B基因组内多种基因的组合方式和突变型，以此来改变香味基因的表达环境，通过筛选，在不改变香味基因的基础上对水稻的香味品质进行了遗传改良，实现了香味物质含量的显著提高，为香稻和超级稻的育种提供了基础材料。