What color is ginkgo fruit?

Ginkgo fruit ripens around September. After maturity, the seeds are golden yellow, similar to kumquat, with white spots on the surface.

Ginkgo biloba morphology

Ginkgo biloba is the only medium-sized broad-leaved deciduous tree in gymnosperms, which can grow to 25-40 meters high and have a DBH of 4 meters. The bark of young trees is smooth and light gray, while the bark of big trees is grayish brown, with irregular longitudinal cracks on the surface, long branches, slow growth and serrated short branches.

It has a thin crown and some irregular branches. The annual branches are light brownish yellow, and the biennial branches are thick and short, gray, and the short branches are dark gray with fine longitudinal cracks. Winter buds are yellow-brown, mostly oval, and the top is blunt and round.

Ginkgo biloba is very special among seed plants, and it is the only broad-leaved deciduous tree in gymnosperms. The leaves are fan-shaped, binary fission or totally divided, with veins parallel to the leaves and no midvein. On the annual branches, the leaves are scattered spirally, and on the short branches, 3 ~ 8 leaves are clustered.

The fan-shaped leaves of adult Ginkgo biloba mainly have the shape of whole, binary fission or multi-division, but the leaves of young Ginkgo biloba are mostly binary fission.

4-6 male cones, yellow-green anthers and spherical pollen. During germination, swimming sperm with two cilia are produced. The stem of the female cone is very long, and the stem is divided into two branches, with at least 3 ~ 5 branches or no branches.

Ginkgo biloba has certain ornamental value. A large number of ginkgo forests have an overall aesthetic effect because of their straight branches and regular conical crowns. Ginkgo biloba leaves turn golden yellow in autumn, which is beautiful under the low-angle sunlight in autumn, and is often used as the background by photographers.

Ginkgo biloba is a gymnosperm, which has only the structure of seeds and has not yet evolved into the fruit of angiosperms, but the seed coat of Ginkgo biloba is developed and looks very similar to the fruit of angiosperms. Ginkgo seeds are1.5-2cm, and are wrapped by a brown seed coat of 2-3cm. Ginkgo seed is called ginkgo, which is a bit like apricot, because it contains a lot of butyric acid and smells like fermented bean curd.

Some people are allergic to the ingredients in fruit pulp, itchy and blistered, and they need to wear gloves when washing fruits. Seeds can be eaten after peeling and cooking, which is a traditional food in China and Japan.

Extended data:

distribution range

Ginkgo biloba is a rare tree species left over from Mesozoic era, and it is a specialty of China. Only Tianmu Mountain in Zhejiang Province has wild trees. Ginkgo biloba is cultivated in a wide range: from Shenyang in the northeast in the north to Guangzhou in the south, with an altitude of 40- 1000 meters in east China, Guizhou and western Yunnan (Tengchong) with an altitude of less than 2000 meters in southwest China, with Pizhou City in Jiangsu Province as the majority, mainly for producing seeds or as garden trees. Gardens in Korea, Japan, Europe and America are cultivated.

Growth habit

Ginkgo tree has a long initial growth time and strong germination. Ginkgo trees are divided into male plants and female plants. Male plants do not bear fruit, and female plants generally begin to bear fruit after 20 years. Ginkgo trees generally begin to sprout and spread leaves in March-April, bloom in April-May, mature in September-65438+ 10, and begin to shed leaves after 65438+10. ?

Seedlings, transplanted seedlings or tillers are often grafted in the cultivation area, which can blossom and bear fruit 8- 10 years in advance (seedlings usually start to bear seeds after 20 years). Ginkgo biloba cultivated everywhere is hundreds or thousands of years old.

References:

Baidu encyclopedia-ginkgo biloba