Advances in Leaf Color Change Mechanism and Breeding of Osmanthus fragrans

doi:10.11924/j.issn.1000-6850.casb2023-0836

Abstract

Abstract:

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.

Key words: Osmanthus fragrans, leaf color change, pigment, chimera, breeding

TU Xunliang, JIANG Yu, QIN Fan, WANG Jin, WAN Bin. Advances in Leaf Color Change Mechanism and Breeding of Osmanthus fragrans[J]. Chinese Agricultural Science Bulletin, 2024, 40(28): 42-50.

Figures/Tables 6

References 66

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类型		现有品种
纯色	红色系	虔南贵妃^[7]、罗彩2号^[8]、罗彩18号^[9]、罗彩19号^[10]、永福幻彩、永福紫炫、闽农桂冠、珍珠彩桂、罗彩1号、罗彩3号、罗彩4号、罗彩6号、罗彩11号、罗彩20号、罗彩26号、罗彩29号、罗彩30号、罗彩31号、罗彩34号、罗彩40号、罗彩46号、罗彩50号、闽彩12、闽彩19
纯色	黄色系	永福彩霞^[11]、永福金彩^[12]、紫嫣公主^[13]、罗彩16号^[14]、罗彩17号^[15]、永福粉彩、永福绚彩、朝阳金钻、罗彩7号、罗彩8号、罗彩12号、罗彩13号、罗彩15号、罗彩22号、罗彩23号、罗彩24号、罗彩27号、罗彩36号、罗彩38号、罗彩44号、罗彩45号、罗彩47号、罗彩48号、罗彩49号、闽彩10、闽彩13、闽彩25、闽彩28
复色（嵌合体）		银碧双辉^[16]、彩虹^[17]、四季芳华^[18]、云田彩桂、金玉桂花

类型		现有品种
纯色	红色系	虔南贵妃^[7]、罗彩2号^[8]、罗彩18号^[9]、罗彩19号^[10]、永福幻彩、永福紫炫、闽农桂冠、珍珠彩桂、罗彩1号、罗彩3号、罗彩4号、罗彩6号、罗彩11号、罗彩20号、罗彩26号、罗彩29号、罗彩30号、罗彩31号、罗彩34号、罗彩40号、罗彩46号、罗彩50号、闽彩12、闽彩19
纯色	黄色系	永福彩霞^[11]、永福金彩^[12]、紫嫣公主^[13]、罗彩16号^[14]、罗彩17号^[15]、永福粉彩、永福绚彩、朝阳金钻、罗彩7号、罗彩8号、罗彩12号、罗彩13号、罗彩15号、罗彩22号、罗彩23号、罗彩24号、罗彩27号、罗彩36号、罗彩38号、罗彩44号、罗彩45号、罗彩47号、罗彩48号、罗彩49号、闽彩10、闽彩13、闽彩25、闽彩28
复色（嵌合体）		银碧双辉^[16]、彩虹^[17]、四季芳华^[18]、云田彩桂、金玉桂花

色素种类		呈色
叶绿素	叶绿素a	蓝绿色
叶绿素	叶绿素b	黄绿色
类胡萝卜	胡萝卜素	橙黄色
类胡萝卜	叶黄素	黄色
类黄酮（花色素苷）	花青素	红色（酸性）
类黄酮（花色素苷）	花黄素	蓝色（碱性）

色素种类		呈色
叶绿素	叶绿素a	蓝绿色
叶绿素	叶绿素b	黄绿色
类胡萝卜	胡萝卜素	橙黄色
类胡萝卜	叶黄素	黄色
类黄酮（花色素苷）	花青素	红色（酸性）
类黄酮（花色素苷）	花黄素	蓝色（碱性）