Grafting method of super clonal pinus sylvestris var. mongolica Litv

Abstract

The invention relates to the technical field of plant planting, and particularly provides a grafting method of super clonal pinus sylvestris var. mongolica Litv. The method comprises the following steps of cutting selection, wherein seeds of trees are from the superior variety GS1 super clonal pinus sylvestris var. mongolica Litv., and 40-year-old GS1 seed trees are adopted; one-year-old branches which are robust, free of diseases and insect pests and have rich terminal buds are collected as the cuttings; selection of stocks, wherein 3-year-old Pinus banksiana Lamb or 3-year-old Pinus densiflora Sieb. et Zucc is selected as the stocks; rejuvenation of the cuttings, wherein a young stock grafting method and the stocks are adopted to conduct rejuvenation to form rejuvenated stocks; grafting, wherein rejuvenated irregular stock double-faced gluing grafting grafts the rejuvenated cuttings onto the stocks. According to the grafting method of super clonal pinus sylvestris var. mongolica Litv, on the basis of the cutting rejuvenation, a GS1 rejuvenated irregular stock double-faced gluing grafting technology is adopted, the grafting survival rate can reach 60%, the expanding propagation speed is obviously increased, and the grafting method of super clonal pinus sylvestris var. mongolica Litv has important practical significance in promoting the goods varieties.

Description

technical field [0001] The invention relates to the technical field of plant planting, in particular to a method for grafting excellent clones of Pinus sylvestris sylvestris. Background technique [0002] Pinus sylvestris is a geographical variety of European scots pine. In my country, it is naturally distributed in western Inner Mongolia and Daxing'an, Heilongjiang. There are sylvestris pine forests in the sandy land at an altitude of 300-900 meters, distributed in an island shape, and also distributed in Xiaoxing'anling. This tree species has strong adaptability, light-loving, cold-resistant, and drought-resistant, and the seedlings are not shade-tolerant. Deep-rooted, not strict on soil, but poor growth in swampy and stagnant water. [0003] The excellent line of Pinus sylvestris (GS1) is an excellent clone of Pinus sylvestris sylvestris that has been screened out through decades of comparative observation of 365 excellent clones in the Zhanggutai Pinus sylvestris seed o...

AI Technical Summary

Problems solved by technology

[0005] The seeds of GS1 are half-siblings, so the excellent traits of the parents cannot be fully inherited by sowing and reproduction, so asexual reproduction must be selected

At present, GSI adopts the traditional pith cambium grafting method for grafting, that is, the grafting rootstock is the same stock pith cambium grafting grafting method, and the survival rate of grafting is very low, only 10%, which seriously inhibits the expansion. Speed