The life of wolfberry

(1) the optimum temperature for germination of seeds is 20-25 ℃, which can be unearthed in 7 days. During the period of 1-4 years, the vitality of seeds did not weaken obviously. In the period of 5 years, the vitality of seeds decreased obviously, and in the period of 10 years, the vitality of seeds completely lost. In addition, the seeds preserved in the way of fruit are higher in germination rate and germination potential than those preserved in the way of seed. There are also differences in different varieties. For example, the seed vitality of wolfberry like round fruit is stronger than that of wolfberry like hemp leaf. The seed germination rate of wolfberry like round fruit, which has been preserved for 10 years, is 50% and 41%, while the seed of wolfberry like hemp leaf completely loses its vitality

(2) the root system starts to move in the middle and last ten days of March every year, grows at the end of March, the first secondary peak is in April, the growth slows down after May, the second growth peak is in late July to mid August, the growth slows down again in September, and the growth stops at the end of October or the beginning of November. Generally, it can reach 2-3 meters in soil, 4-5 meters in root width, 1500 or more root strips at most, and the total length can reach nearly 130 meters

3) in the first ten days of April every year, the dormant buds of stem and leaf release leaves, the spring shoots grow in the middle and last ten days of April, and stop growing from the last ten days of July to the first ten days of August. The spring leaves fall off. In the first ten days of August, the branches release leaves and shoot autumn shoots again, stop growing in the middle of September, and fall leaves again in the last ten days of October, and enter into hibernation.

(4) the budding and flowering period of flowers and fruits in spring is from late April to late June, and the fruiting period is from early May to the end of July. In autumn, most of the buds bloom in the first and middle of September, and the fruit period is from the middle of September to the first ten days of October.

Generally speaking, 3-5 years of wolfberry trees are young: 6-10 years of tree body expansion, tree crown enrichment; 11-25 years of growth slows down, trunk and branches are stable: 26-35 years are similar to 11-25 years, but the growth of root and neck is slightly larger; 36-55 years of growth weakens: 56 years later into the decline period. A branch of Lycium barbarum growing normally with a life span of up to 100 years

(5) the opening process of flowering Lycium barbarum flower can be divided into five periods according to its external morphology.
a. budding stage: small green hemispherical protuberances appear in the axils of the leaves, or small green hemispherical protuberances appear at the base of the leaf primordium of the old eye branches, that is, young flower buds. When it grows to 2-3 mm long and 1-1.5 mm thick, it is the budding stage and the pollen mother cell forming stage, with the growth period of 5-6 days
b. young bud stage: the flower bud is 3-4 mm long and 2-3 mm thick. The calyx is green, covering the petals. The petals are yellowish green, with filaments and styles. The growth period is about 10-12 days.
c. crown stage: from the opening of calyx to the loosening of corolla, the flower bud is about 12 mm long and 2.5 mm thick, the anther is milky white, the stigma is green, and the petals are purplish red. The growth period is about 3 days.
d. flowering period: from the beginning of petal loosening to outward spreading, corolla lobes are purplish red, about 2-5 hours. The stamens extend out of the corolla tube, most of them are higher than the pistil, the anthers are cracked, the pollen is light yellow and scattered in large quantities; the stigma is capitate, green, and the nectary at the base of ovary is rich
f. withering period: the whole corolla is dry, dead and falling off for 2-3 days
g. fruiting stage is generally divided into three stages

② green fruit stage: after the pollen of Lycium barbarum is transferred to the stigma, the ovary expands to green young fruit, the style is withered, the corolla and filament fall off. Generally, the fruit is 09 cm long and 0.5 cm in diameter. The growth period is about 22-29 days. Low temperature, long growth period
② color change period: the color of fruit changes from green to light green → light yellow → yellow red. The pulp is dense, the endosperm is full, and the seeds are white. The soluble solid content of fresh fruit was 4.62%. The time is 3-5 days.
③ red ripening period: the fruit grows the fastest, its volume expands 1-2 times rapidly, its color is bright red, and it is fully mature. The pulp is soft and juicy, and the total sugar content is 46% ~ 52%. Calyx is easy to fall off, seeds are mature, yellow and white. Time 1 day.

The seedlings of Lycium barbarum can bloom and bear fruit in the same year. Later, with the growth of tree age, the ability of flowering and bearing fruit gradually increases. After 36 years, the ability of flowering and bearing fruit gradually decreases. The age of bearing fruit is about 30 years