Method for shortening juvenile period of apple hybrid seedlings

Abstract

The invention discloses a method for shortening the juvenile period of apple hybrid seedlings, comprising the following steps of: culturing rootstock seedlings, culturing dwarf interstock seedlings, culturing apple hybrid seedlings, grafting seedlings at a high position, performing final-period management on trees and the like. According to the method, can be realized, and the semi-finished seedlings grafted at a high position after planting can blossom and fruit after growing to the 4th year, and have the fruiting plant rate up to 20% in the 5th year and up to 40% in the 6th year. Traditional seedlings need 8-10 years of juvenile period, so the juvenile period of the seedlings is shortened by 4 years; and compared with a traditional method, the plant rate after the juvenile period is greatly increased as well. According to the invention, measures of curing dwarf interstock seedlings early, sowing seedlings, taking the high-position buds of the seedlings and grafting the high-position buds to the dwarf interstock seedlings, and then planting, and other steps are adopted, and interstock grafting is performed on the apple seedlings, thus greatly shortening the juvenile period of the apple seedlings, shortening breeding process and fruiting time, increasing breeding efficiency, and saving lots of field management cost and resource investment simultaneously.

Description

technical field [0001] The invention relates to hybrid breeding, in particular to a method for shortening the juvenile period of apple hybrid seedlings. Background technique [0002] The childhood period of apple hybrid seedlings refers to the period from the germination of apple seeds to the time before the seedlings have the ability to form flower buds. The childhood period of apple seedlings is relatively long, and it generally takes 8 to 10 years without the participation of relevant cultivation methods. Hybrid breeding is the most traditional, safe and effective method, and it is still an irreplaceable main method for apple breeding. This determines the characteristics of long work cycle and large investment in apple hybrid breeding. The emergence of a good variety often requires decades and generations of unremitting persistence. In order to explore the principle of apple seedling infancy and infancy and improve breeding efficiency, scholars from various countries ha...

AI Technical Summary

Problems solved by technology

In order to explore the principle of apple seedling infancy and infancy and improve breeding efficiency, scholars from various countries have carried out a lot of research work. The preliminary research shows that the infancy of apple seedlings is an insurmountable process, mainly related to nutrient accumulation, and many attempts have been made. Cultivation methods such as growing in advance, increasing fertilizer and water, pruning in summer, applying plant growth regulators, etc., but the effect is not very satisfactory