Which kinds of walnut tree buds can be divided into?

   walnut is a monoecious plant. The buds can be divided into leaf buds, female flower buds, male flower buds and dormant buds.

   female flower buds (mixed buds): more than 3 nodes at the apex of branches. The morphological characteristics are as follows: the bud is the largest, spherical, the scales are tight, and the top of the bud is obtusely round. After the female flower bud germinates, the fruiting branch is drawn first, and then 1-3 or more female flowers are planted at the top of the fruiting branch, and blossom and bear fruit. The mixed buds of early bearing walnut are not only born at the top of 1-year-old branches, but also have mixed flower buds, generally 2-5, up to 20 at most. Walnuts are mostly born in 1-2 buds at or below the tip of 1-year-old branches, solitary or superimposed with leaf buds and male flower buds in leaf axils. After germination, the fruiting branch is produced, and at the top of the fruiting branch, the female inflorescence blossoms and bears fruit.

   male flower bud: generally born in the branch terminal bud below the 2-10 nodes, the bud body is long oval, the scale is very small, can not cover the bud body, so it is also called naked bud. Male flower buds are pure flower buds, only male flowers are produced after germination, showing catkin, without branches and leaves. Longer male inflorescences can be more than 12 cm long, with more than 10 male flowers, producing a large number of yellowish pollen.

   leaf bud: also known as vegetative bud. Growing at the top of the branch or below the mixed bud of the fruiting branch, there may be leaf buds on each node of the branch. The bud body of the terminal leaf bud is larger, the bud body of the lateral leaf bud is smaller, and the leaf bud germinates and develops branches. The leaf buds located in the upper part of the branches can produce full and robust new shoots and can be transformed into fruiting mother branches when the nutritional conditions are good. Most of the smaller leaf buds in the middle and lower parts of the branches did not germinate and were dormant. In this way, the developmental branch of the walnut tree has a long shoot in the terminal bud, a short branch in the lower part, and a light band in the middle and lower part. when it grows for many years, the branch position will rise and the fruit position will move outward.

   latent buds, that is, dormant buds. It's a kind of leaf bud. Born at the base of the branches, the buds are small and round, and generally do not germinate, and their vitality can be maintained for decades to more than a hundred years. With the thickening of the branches, they are gradually put into the bark, and when stimulated, they can sprout and shoot for renewal and rejuvenation.

The properties of the terminal buds of    walnut varied with different tree ages. After the terminal bud of the young tree germinates, the growth is large, forming backbone branches and forming the trunk. After entering the fruiting period, most of the terminal buds form mixed buds, which can branch and prolong the growth, but a few terminal buds continue to bear fruit and enlarge the crown. The terminal bud of walnut can be divided into true and false. For those who do not bear female flowers, the terminal buds are true terminal buds; those with female flowers at the top of branches can not continue to branch and grow after fruit, and their terminal buds are called false terminal buds. The false terminal bud is formed by the elongation of the base of the first lateral bud under the female flower bud, the true terminal bud is easier to form mixed buds, and the fruit setting rate is higher.

The compound buds of    walnut are born in the axils of branches and leaves, arranged up and down, also known as vertical arrangement, with the upper bud as the main bud and the lower bud as the secondary bud. The arrangement of leaf buds, male flower buds and two male flower buds were the most.