Ginkgo tree is one of the oldest trees in the world. Ginkgo tree, also known as ginkgo tree, was called gongsun tree or duck foot tree in ancient times. Its branches are tall and straight, and its fruit is white.
Ginkgo biloba is a special product in China with a long history. Geographically, wild Ginkgo biloba is distributed in Tianmu Mountain in China and Zhejiang. Not only that, it is also the only ancient ginkgo plant that still lives on the earth in modern times, which is very precious.
Is ginkgo a deciduous tree or an evergreen tree?
Ginkgo biloba is a deciduous tree of Ginkgo biloba. General deciduous trees, trees that shed their leaves in autumn and winter or dry season every year, generally refer to deciduous trees in temperate zones, and ginkgo trees have these characteristics.
About hundreds of millions of years ago, ginkgo trees appeared in large numbers in the world. But with the change of time, the number of ginkgo trees is getting less and less. The contemporary ginkgo trees that survive naturally are scattered sparsely, and the ancient ginkgo trees that are 100 years old are almost invisible.
Ginkgo biloba is a well-deserved "living fossil" There are nearly 26 varieties and varieties of Ginkgo biloba, including Ginkgo biloba, Ginkgo biloba, Ginkgo biloba and Ginkgo biloba. Because the fruit of ginkgo tree is white, it is also called ginkgo tree.
Ginkgo tree is a veteran of the tree world. They live long and grow slowly. Under natural growth conditions, it takes more than 20 years for ginkgo trees to grow and bear fruit, and it takes about 40 years for ginkgo trees to bear fruit in large quantities. Because of this, people also call ginkgo tree "Gongsun Tree".
Varieties of ginkgo trees
At present, there are many varieties of ginkgo trees, and their core varieties are: Dajingou, Jiafozhi, Dahai River, Maling No.3, Dongting Yellow and so on.
Its male plant varieties are: Songyou 1, Guangxi Zaohua. Its wood varieties are: Straight-dried Ginkgo S-3 1 and Wan Yu 9#. Its leaf varieties are: ginkgo, ginkgo, ginkgo, ginkgo.
Ginkgo biloba leaves are fan-shaped with stalks, and the leaves on its short branches generally have wavy notches, while the leaves on its long branches are mostly dichotomous.
Ginkgo biloba, on the other hand, has unisexual spore leaves, which grow in the axils of scaly leaves at the top of short branches of Ginkgo biloba. Generally, megaspore leaf bulbs have a long stalk, and there is a bead ring at the end of the stalk-annular megaspore leaves.
Identification characteristics of ginkgo biloba
Fan-shaped leaves, deciduous trees, clustered in short branches, scattered in long branches, unisexual cones, dioecious, drupe-like seeds. The leaves of female ginkgo plants are shallow, while those of male ginkgo plants are deep. The short branches of female flowers of Ginkgo biloba are relatively short, and the short branches of male flowers are relatively long.
Ginkgo biloba also has many primitive characteristics, such as its vein form is bifurcated, which is extremely rare in gymnosperms.
The male pollen of Ginkgo biloba will produce two swimming ciliated sperm during germination. This feature is very common in ferns and only exists in gymnosperms.