my country is rich in plant resources and has many types and varieties of fruit trees. According to statistics, my country's fruit trees include about 58 families, more than 300 species, and more than 10,000 varieties, both native and introduced. Faced with a wide variety of fruit trees, how to classify them?

There are many ways to classify fruit trees, with different classification basis and different types of fruit trees.

Fruit trees are divided into cold zone fruit trees, temperate zone fruit trees, subtropical and tropical fruit trees according to ecological adaptability; fruit trees are divided into two categories: deciduous fruit trees and evergreen fruit trees according to the growth habits of leaves; according to tree body characteristics, Fruit trees are divided into tree fruit trees, shrub fruit trees, vine fruit trees, and perennial herbaceous fruit trees; according to the structure of the fruit, fruit trees can be divided into pome fruit trees, stone fruit fruit trees, citrus fruit trees, berry fruit trees, nut fruit trees, etc.

The commonly used classification methods are as follows:

1. Woody evergreen fruit trees

(1) Citrus

Citrus The fruit tree belongs to the Rutaceae family. The fruit is developed from the ovary. The outer pericarp is orange-yellow and is rich in oil cells. This type of fruit is extremely resistant to storage and transportation. The main fruit trees include tangerines, sweet oranges, pomelos, limes, lemons, kumquats, tangerines, grapefruits, seedless Wenzhou mandarins, four-season tangerines, etc.

(2) Other berries

(carambola), stone fruits (olives, mangoes), nuts (cashew nuts) , coconut), pods (tamarinds, carob trees), polyberries (pineapples), vine fruit trees (passionflower), etc.

2. Woody deciduous fruit trees

(1) Pome fruits

Pome fruit trees belong to the Rosaceae family. The fruits are composed of an ovary and its receptacle** *A false fruit that develops at the same time. The exocarp is thin, the mesocarp is fleshy, and the endocarp is leathery, with seeds inside. The edible part is mainly the fleshy torus. The fruit is resistant to storage and transportation. The main fruit trees include apples, pears, sand fruits, hawthorns, quinces, papayas, etc.

(2) Drupe fruit

Drupe fruit trees belong to the Rosaceae family, and the fruit is a true fruit developed from the ovary. . The exocarp is thin, the mesocarp is fleshy, and the endocarp is bony and has a hard core with seeds inside. The edible part is the fleshy mesocarp. The fruit is not resistant to storage and transportation. The main fruit trees include peach, plum, plum, apricot, cherry, etc.

(3) Berries

The fruits of berry fruit trees are rich in juice and cannot withstand storage and transportation. The grape fruit develops from the ovary. The outer pericarp is thin, the mesocarp is the fleshy part and the endocarp is the free plasma cells attached around the seeds.

(4) Nuts

Nut fruit trees mainly include chestnuts, walnuts, pecans, pecans, ginkgo, hazelnuts, almonds, etc. The edible part of the fruits of this type of fruit tree is the seeds.

(5) Persimmon and jujubes

Persimmon, jujube, wild jujube, Junqianzi, etc.

3. Perennial herbaceous fruit trees

Banana, pineapple, papaya, strawberry, etc.

The above is the general classification of fruit trees for everyone to study and study.