Artificial pollination method of eucalyptus

Abstract

The invention discloses an artificial pollination method of eucalyptus. The artificial pollination method comprises the following steps: (1) selecting seed trees: selecting the seed trees with excellent heredity quality and high combining ability; (2) performing castration: selecting flower branches with moderate flowering amount and moderate maturity, wherein the quantities of buds is 20 or above, and the moderate maturity means opercula is light white and soon drops optimally; (3) performing bagging: performing isolation on branches to be subjected to pollination so as to prevent pollution of non-target, pollen; (4) performing pollination: mastering good pollination opportunity during the pollination, when top ends of gynoecium stigmas expand and secrete certain mucus, performing pollination, wherein the optimal pollination period is the time 3-5 days after castration, and during the pollination operation, performing pollination from bottom to top so as to avoid the condition that the stigmas are damaged after being hit. Compared with the prior art, the artificial pollination method disclosed by the invention has the advantages that artificial pollination is an important means for performing hybridization breeding and cultivating new species of the eucalyptus; according to the artificial pollination method disclosed by the invention, the operation is convenient, the dosage of the pollen can be saved, the success rate of the pollination is increased, the fruit setting rate is increased, and the final effective hybrid seed number is increased.

Description

technical field [0001] The invention relates to an artificial pollination method, in particular to an artificial pollination method for eucalyptus. Background technique [0002] Eucalyptus is the general name of Eucalyptus plants of Myrtaceae (Myrtaceae). It is native to Australia and Indonesia islands. It is widely planted in various countries. The cultivated area of ​​eucalyptus in my country has reached 6 million hectares. It is an important industrial timber species in the southern region and has made important contributions to the production of commercial timber in our country. Eucalyptus urophylla (Eucalyptus urophylla S.T.Blake) is the most important species of eucalyptus introduced in my country, and the cultivation area of ​​its pure species and its hybrid varieties as parents accounts for more than 85% of the national eucalyptus cultivation area. Therefore, the present invention mainly solves the problem of Eucalyptus urophylla. Provide guarantee for the artificia...

AI Technical Summary

Problems solved by technology

The traditional artificial pollination method of eucalyptus generally adopts cumbersome working procedures, the fruit setting rate and pollination effect are unstable, and the pollen waste of the male parent tree is serious.

Images