The latest willow breeding methods

The willow is the general name of a kind of plants of the genus Salix in the willow family, with many species, easy hybridization, strong hybrid growth and adaptability, and easy asexual reproduction. Excellent clone varieties can be obtained through asexual reproduction from natural or artificial hybrid populations. We can also quickly obtain a large number of high-quality seedlings by the method of plant tissue culture. Let's take a look at the propagation methods of willows.

Growth habits of Willow

Willow belongs to a wide ecological range of plants, has a wide adaptability to the environment, and is a mesophytic and humid tree species that like light, humidity and cold tolerance, but some species can grow in places with poor ecological conditions such as drought and saline-alkali tolerance, and grow better in the plains and fertile fields with superior site conditions. the general life span is 20 to 30 years, and a few species can reach more than 100 years.

Distribution of producing area of willow

Willow is suitable for a variety of ecological environments, no matter high mountains, plains, sand dunes, polar regions have willow growth, mainly distributed in the temperate regions of the Northern Hemisphere. The dry willow is native to the plains of North, Northeast and Northwest China. Weeping willows are introduced all over China and are introduced in many countries in Europe, Asia and America. Korea weeping willow, round head willow, Changzhu willow, white willow, big white willow, fine column willow, Qi willow and so on are mostly found in northeast China, as well as in Korea, Japan and the Russian far East. Firecracker willow is native to Europe and is introduced in northeast China. White willow is produced in Xinjiang, Gansu, Qinghai and Xizang in China, as well as in Iran, Pakistan, northern India, Afghanistan, Russia and Europe. Glandular willow produces in the middle and lower reaches of the Yellow River and southern Liaoning Province, as well as in Korea and Japan. Yunnan willow is native to Yunnan, Guangxi, Guizhou and Sichuan of China. Purple willow is produced in the lower reaches of the Yangtze River in China. The big leaf willow is produced in Sichuan Province of China. Cotton willow has been introduced in Beijing, Shanghai, Guangzhou and other cities in China.

Propagation methods of Willow

Willow cutting propagation is commonly used, which can maintain the excellent characteristics of the mother tree, mainly cutting propagation, but also sowing and raising seedlings. The cutting was carried out in early spring, and the excellent plants with fast growth and few diseases and insect pests were selected as the mother tree. 2-3-year-old branches were cut before sprouting and cut into 15-17 cm as cuttings. The cuttings were cut directly with a row spacing of 20 × 30 cm and fully watered after cutting. often keep the soil moist, wipe sprouts and weeds in time, and apply topdressing for 3 times after rooting, the seedlings are vulnerable to weevil, aphid and willow leaf beetle. The seeds were harvested in April and sowed with picking. The weight of a thousand seeds was 0.4 grams, the germination rate was 70% 80%, the seed per mu was about 0.25 kg, and the height of the seedlings in the same year was 80 cm 100 cm. The transplant should be carried out from the defoliation in winter to the bud in the early spring of the following year, and the pillars should be fully watered and supported after planting.