The author briefly outlined the fundamental concepts of the Osmanthus fragrans colour group and categorized the existing new varieties based on leaf coloration-emerging into two types of monochromatic and polychromatic(chimera).This article elaborated on the three types of pigments presented in the leaves-chlorophyll,carotenoids,and anthocyanins,their contents and ratios,as well as the influencing factors and leaf color change mechanisms.Furthermore,it summarized the characteristics and current applications of cross-breeding,mutation breeding,and genetic engineering in O.fragrans.It also suggested strengthening the functional analysis of genes involved in the O.fragrans colour group and innovation in breeding technology,to obtain breakthrough new varieties with superior traits,strong adaptability,and excellent ornamental qualities,aiming to propel the continuous development of the O.fragrans colour group breeding program.
关键词
桂花/叶色变化/色素/嵌合体/育种
Key words
Osmanthus fragrans/leaf color change/pigment/chimera/breeding
维普
万方数据