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Artificial cross breeding method for eucalyptus based on female parent dwarfing

An artificial hybridization and dwarfing technology, applied in botany equipment and methods, plant genetic improvement, grafting, etc., can solve the problems of limited dwarfing effect of eucalyptus, achieve reliable genetic traits of female parent, avoid the risk of working at heights, pollination The effect of volume increase

Active Publication Date: 2022-04-12
广西壮族自治区国有东门林场
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the apical dominance removal of lateral branches is not enough to control the growth of plant height, so the dwarfing effect of eucalyptus is limited

Method used

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  • Artificial cross breeding method for eucalyptus based on female parent dwarfing
  • Artificial cross breeding method for eucalyptus based on female parent dwarfing
  • Artificial cross breeding method for eucalyptus based on female parent dwarfing

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Embodiment 1

[0045] A method for artificial cross-breeding of eucalyptus based on female parent dwarfing, the specific operation steps are as follows:

[0046] (1) Screening of excellent individual plants: In the Eucalyptus urophylla family test forest, according to the above-mentioned criteria for the selection of excellent individual plants of Eucalyptus, from the diameter at breast height and tree height measured for consecutive years, the family stock volume and the average annual growth were calculated by statistical methods. After analysis and comparison, select excellent families, and then select 1 to 2 excellent individual plants with the best phenotypic traits in the mature age excellent families, number them, and cultivate them as excellent scion plants; A single plant refers to an individual with the largest tree height and diameter at breast height, and the trunk is straight and the angle of sharpening is small. Genetic variation analysis of wood properties such as resistance (...

Embodiment 2

[0060] A method for artificial cross-breeding of eucalyptus based on female parent dwarfing, the specific operation steps are as follows:

[0061] (1) Screening of excellent individual plants: In the Eucalyptus urophylla family test forest, according to the above-mentioned criteria for the selection of excellent individual plants of Eucalyptus, from the diameter at breast height and tree height measured for consecutive years, the family stock volume and the average annual growth were calculated by statistical methods. After analysis and comparison, select excellent families, and then select 1 to 2 excellent individual plants with the best phenotypic traits in the mature age excellent families, number them, and cultivate them as excellent scion plants; A single plant refers to an individual with the largest tree height and diameter at breast height, and the trunk is straight and the angle of sharpening is small. Genetic variation analysis of wood properties such as resistance (...

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Abstract

The invention discloses a method for artificial cross breeding of eucalyptus based on female parent dwarfing, which is characterized by comprising the following operation steps: (1) screening excellent single plants; (2) rootstock cultivation; (3) grafting; (4) grafting plant cultivation; (5) collecting pollen; (6) storing the pollen; (7) manually controlling pollination; (8) management after pollination; (9) harvesting fruits; and (10) treating fruits. The dwarfed plant grafted by the method disclosed by the invention blooms in the second year after grafting, can be manually controlled to pollinate on the ground as a female parent, greatly saves manpower and material resources, can harvest more hybrid seeds, and can also be used as a male parent to collect pollen; by establishing a dwarf breeding garden, the strength of cross breeding can be enhanced, and orthogonal cross, inverse cross, backcross and test cross can be simultaneously carried out, so that a hybrid offspring population with a wider hereditary basis is obtained, and the method has milestone significance in accelerating the eucalyptus breeding process.

Description

technical field [0001] The invention relates to the technical field of forest tree breeding and eucalyptus cultivation, in particular to a method for artificial cross-breeding of eucalyptus based on dwarfing of the female parent. Background technique [0002] Eucalyptus is native to Australia and belongs to the Myrtaceae, Angophora Cav., Corymbia K.D.Hill & L.A.S.Johnson and Eucalyptus L'Herit species collectively. Eucalyptus is rich in resources, with a total of 808 species and 137 subspecies or varieties, totaling 945 taxa. Because of its fast growth and wide range of uses, it has become one of the three major plantation tree species recognized in the world. my country began sporadic introduction in 1890. In 1982, the "Sino-Australia Technical Cooperation Dongmen Eucalyptus Demonstration Forest Project" was implemented in the Dongmen Forest Farm. A large number of introduction experiments were systematically carried out, and Eucalyptus urophylla, Eucalyptus grandis, Eucal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04A01G2/30
CPCY02P60/40
Inventor 邱炳发唐再生王建忠陆珍先熊涛张磊蒋兴成赵英伟李霞马忠才李丽芳刘金炽彭智邦俸荣娣
Owner 广西壮族自治区国有东门林场
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