A kind of cutting propagation method of torreya longifolia

Abstract

The invention belongs to the technical field of asexual reproduction of plants and particularly provides a cutting propagation method for Torreya jackii. The method specifically comprises the following steps: (1) construction of a full-sunlight and automatic spraying cutting pool; (2) cutting shoot collection and cutting shoot preparation; (3) cutting; (4) maintenance management after cutting; (5) management after transplanting. According to the method, hormone treatment is adopted during cutting and transplanting, so that the cutting survival rate and the rooting rate are increased greatly, the plant growing conditions are improved, the propagation survival rate is high, the heredity changes little, management is convenient, large-scale propagation is facilitated, the endangered plant Torreya jackii can be saved effectively, and the existing background of the plant is enabled to move northwards.

Description

technical field [0001] The invention belongs to the technical field of plant vegetative propagation, and in particular relates to a cutting propagation method of the evergreen small tree Torreya longifolia. Background technique [0002] Long-leaf Torreya ( Torreya jackii Chan ), also known as Torreya chinensis and Torreya japonica, belonging to the genus Torreya yewaceae, is a relict gymnosperm plant remaining from the Cenozoic Tertiary period, a precious tree species unique to my country, and a wild plant under national second-level key protection. The taxonomy and flora's climatic response to the Quaternary Ice Age are of great significance. In addition, the long-leaved torreya is hard and fragrant, and can be used to make utensils. [0003] Long-leaved Torreya is an evergreen small tree or often a multi-branched shrub; branches are whorled or opposite, spreading or branchlets drooping; leaves are opposite, arranged in two rows, hard, linear-lanceolate, 3-13 cm long , 3-...

AI Technical Summary

Problems solved by technology

[0006] In the prior art, there are very few researches on the cutting propagation of Torreya torreya, because Torreya torreya is extremely rare in the wild, and there is no more suitable one in the market. Torreya torreya seeds have a very long maturity period and poor natural regeneration ability, so they are stored in warm sand for winter Or direct sowing, the germination rate is only 0.5-1%. In addition, the long-leaved torreya grows slowly and has high requirements on the environment. Two long-leaved torreyas preserved by the Chinese Academy of Sciences in Jiangsu Province have passed more than 50 years. The tree height is 6 meters, the chest The neck is 13 cm, but there is no fruiting so far. The state of the art does not utilize the large-scale propagation of Torreya torreya. Therefore, research on the effective invisible propagation method of Torreya torreya can save the endangered plant Torreya torreya and make the survival background of this species move north