A Study On the Classification of Sweet Osmanthus Cultivars
Zang Dekui1,2 Xiang Qibai1 Liu Yulian1
(1 Research Center of Sweet Osmanthus,Nanjing Forestry University,Nanjing 210037)
(2 College of Forestry,Shandong Agricultural University,Taian 271018)
Abstract: This paper deals with the origin, evolution and classification of sweet osmanthus cultivars. The characteristics of reproductive organs, such as inflorescence types, blossoming habits, flower colors, flower types, fertility or sterility of ovaries, are much more significant than those of vegetative organs, such as the size and shape of lamina, leaf margin and apex, petiole. So the former should be used as the first consideration in cultivars classification of sweet osmanthus, while the latter as a reference only. Using the inflorescence types and blossoming habits as the first criterion, and the flower colors as the second one, we proposed a system in which two divisions and four groups are recognized, namely, Fragrans Division (only 1 group, i.e., Fragrans Group) and Autumn Division (3 groups, i.e., Latifolius Group, Thunbergii Group and Aurantiacus Group). Fragrans Division is more primitive than Autumn Division, while the evolutionary sequence from primitive to advanced in Autumn Division is Latifolius Group, Thunbergii Group and Aurantiacus Group. Sixty-two cultivars found in China are classified according to the system.
Key words: Sweet osmanthus; Classification criterion; Origin and evolution; Cultivar classification system
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只看楼主 我来说两句-
yuandan2003
沙发
四季桂叶子偏向于呈矩形,其他的我也不知道了
2006-10-30 21:57:30
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lyb410
板凳
如果可以不想看那么多 呵呵
2006-10-30 11:33:30
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有什么方法容易一下子辨认 四季桂 和丹(单)桂?
在广东 四季桂比丹(单)桂值钱
我看了那么久 没有记住方法:)
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