银杏叶生长发育规律了研究

Abstract

Abstract:

The morphologic feature, growth and development, leaf screen and leaf biomass of four Ginkgo caltivars in China were studied in this paper, which were Kuijin, Maling 5^#, Jiafushou and Dongtinghuang.Leaves of Ginkgo are categorized:fan shape.semicircle shape and the heart shape.The heterophylly of Ginkgo is related with age of shoots and location of leaves growth.The phyllotaxis of cutivars are proved to be 3/8.The annual dynamic change in leaf length, leaf width, petide length, leaf area, dry and fresh weight of leaf can be expressed "S"-shaped curves.Water content in leaves sharply declines as the leaves growth period prolongs.Length of long shoot is 583cm, numbers of leaves are 402, leaf area is 9735cm², fresh weight of leaves is 355g, leaf area index is 2.58 for a 3-year-old young grafted tree.

Key words: Ginkgo, Leaf, Growth and development, Leaf area index

Cite this article

Shiyan Xing,Xia Sun,Kegui Li,Xiangliang You. GROWTH AND DEVELOPMENT OF GINKGO BILOBA LEAVES[J]. Scientia Silvae Sinicae, 1997, 33(3): 267-273.

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Figures/Tables 4

Fig.1

The morphologic feature of leaves on Ginkgo fine cultivars. A Jiafushou, B Maling 5#, C Kujin, D Dongtinghuang, E Seedling.The above row: leaves on two-year-old shoots; the below row: leaves on one-year-old shoots."

Fig.1

Table 1

S-Shape curve and linear regression analysis on leaves growth period (days after leaves extend x)and growth indices(yi)"

Table 1

Fig.2

The Change curves of dry, fresh weight and water content of leaves for Ginkgo fine cultivars "

Fig.2

Table 2

Lsw of changes in leaves sareen and leaves biomass of Gimkgo fine cultivars and seedling"

Table 2

References 7

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2	Del Tredici P . Ginkgo and people-a thousand years of internation. Amoldia, 1991, 51 (2): 2- 15.
3	Flesch V et al. Relative importance of growth and light level on terpene content of Ginkgo biloba. Phytohemistry, 1992, 31 (6): 1941- 1945.
4	Gunckel J E et al. Studies of development in long shoots and short shoots of Ginkgo biloba. Amer. J. Bot., 1946, 33 (4): 285- 295.
5	邢世岩.银杏丰产栽培.济南科技出版社, 1993: 1-406
6	邢世岩等. 美国银杏研究现状. 世界林业研究, 1994, 7 (4): 54- 61.
7	陈鹏等. 银杏叶面积系数测定方法的研究. 浙江林业科技, 1992, 12 (6): 8- 12.

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