Hybridization breeding method for fructus jujubae trees

Abstract

A jujube tree hybridization method, that is, by effectively isolating the entire plant or a branch group of the female parent tree, collecting pollen from the male parent tree at the best time after flowering to artificially pollinate the female parent tree, and collecting seed cores after the fruit matures , store, sow in spring to cultivate progeny jujube seedlings, retain the progeny jujube seedlings with cultural traits, and collect spike seedlings on plants with obvious outstanding and excellent cultural traits, and scions enter the excellent-line high-grain identification nursery for determination until they are obtained. Excellent variety. The method can effectively overcome the disadvantages of jujube crossbreeding such as difficulties and low operability, and realizes directional hybridization, which is beneficial to the accurate directionality of hybrid offspring, improves breeding progress, shortens breeding time, and improves breeding efficiency.

Description

technical field [0001] The invention relates to a jujube hybrid breeding method. Background technique [0002] Fruit tree breeding has been carried out for more than 50 years, and great achievements have been made. Among them, hybrid breeding is a technical method in which hybrids are obtained through the combination of gametes between types with different genetic types, and then cultivated and selected to create new varieties. When using this method, clear breeding objectives and correct selection and matching of parents are the key to success or failure. [0003] Jujube tree is a tree species with many flowers and many buds and a very low fruit setting rate, and few kernels are formed in the seed core. Under normal circumstances, the natural fruit setting rate of jujube trees is less than 1%, the rate of kernels contained in seed kernels is less than 5%, and the variation rate of seed kernels after germination and seedlings is also extremely high, which often manifests...

AI Technical Summary

Problems solved by technology

Under normal circumstances, the natural fruit setting rate of jujube trees is less than 1%, the rate of kernels contained in seed kernels is less than 5%, and the variation rate of seed kernels after germination and seedlings is also extremely high, which often manifests as the phenomenon of tree species returning to their ancestors. Breeding method for cross breeding is often futile and lacks operability