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Improved control hybridization method on tree of willow

A hybridization method, willow technology, applied in horticultural methods, botanical equipment and methods, plant genetic improvement, etc., can solve the problem that nutrients are difficult to achieve hybrid growth and maturity, reduce hybrid yield and germination rate, hybrid abortion maturity, etc. problems, to achieve the effect of improving breeding efficiency, simple facilities, and high maturity

Pending Publication Date: 2018-12-21
SHANDONG FOREST SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of hydroponic hybridization with cut branches in the greenhouse are that it is easy to control the temperature and humidity, and can artificially control the morning and evening of the flowering period. The disadvantage is that most willow branches are thin and weak, and the nutrients in the branches are difficult to meet the requirements of hybrid development and maturity. Breeding failure
The advantage of big tree hybridization is that the number of hybrids obtained is large, the maturity is high, and a sufficient number of breeding populations can be obtained to meet the breeding needs; the disadvantage is that the trees and willows are tall and difficult to operate manually, and need to be erected. It is time-consuming, labor-intensive and wasteful to carry out bagging and isolation of each female flower branch. At the same time, subject to the influence of the weather, it is easy to cause the parents to fail to meet in the flowering period, resulting in breeding failure.
At present, there is no hybrid breeding method that combines outdoor arbor hybridization and greenhouse cutting hydroponic hybridization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method of controlled hybridization on an improved arbor willow:

[0033] Step 1, dwarf tree willow cultivation: select the female plant of 2-year-old tree willow such as dry willow, weeping willow and other robust saplings, and cut it flat from the ground 2cm to make rootstock. Select 0.8-1.5cm robust branches of female flower buds on the same species of willow in 4 years to make scions, and the scion length is 6cm, and 2 buds are reserved on each scion. Graft the scion to the rootstock. Each rootstock can be connected with 1-3 scions depending on the thickness. After grafting, use plastic ropes to bind and fix, and then bury the soil 2cm above the grafting site. Pay attention to remove the bandages in time and erase the germinated branches of the rootstock, and cut off the excessive branches germinated on the scion at the same time.

[0034] Step 2, girdling of saplings: girdling the grafted stock and ear combination after 1 year of cultivation in the field, the g...

Embodiment 2

[0040] A method of controlled hybridization on an improved arbor willow:

[0041] Step 1, dwarf arbor willow cultivation: select the female plant of 3-year-old arbor willow such as dry willow, weeping willow and other robust saplings, and cut it flat from the ground 5cm to make rootstock. Select 1.5cm robust branches of female flower buds on the same species of willow in 5 years to make scion, the long 10cm of scion, keep 3 buds on each scion. Graft the scion to the rootstock. Each rootstock can be connected with 1-3 scions depending on the thickness. After grafting, use plastic ropes to bind and fix, and then bury the soil 3cm above the grafting site. Pay attention to remove the bandages in time and erase the germinated branches of the rootstock, and cut off the excessive branches germinated on the scion at the same time.

[0042] Step 2, girdling of saplings: girdling the grafted stock and ear combination after 2 years of cultivation in the field, the girdling season is S...

Embodiment 3

[0048] A method of controlled hybridization on an improved arbor willow:

[0049] Step 1, dwarf arbor willow cultivation: select the female plant of 2-year-old arbor willow such as dry willow, weeping willow and other robust saplings, and cut it flat from 4cm from the ground to make rootstock. Select the 1cm strong branch of female flower bud on the same kind of willow in 4 years to make scion, and the long 8cm of scion keeps 3 buds on each scion. Graft the scion to the rootstock. Each rootstock can be connected with 1-3 scions depending on the thickness. After grafting, use plastic ropes to bind and fix, and then bury the soil 2.5cm above the grafting site. Pay attention to remove the bandages in time and erase the germinated branches of the rootstock, and cut off the excessive branches germinated on the scion at the same time.

[0050] Step 2, girdling of saplings: girdling the grafted stock and ear combination after 2 years of cultivation in the field, the girdling seaso...

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Abstract

The invention discloses an improved control hybridization method on the tree of a willow. The method comprises the following steps of dwarf arbor willow cultivation, young tree girdling, greenhouse flower forcing, pollination, management after pollination and hybrid collection. The improved control hybridization method on the tree of the willow has the advantages that the advantages of the outdoorhybridization on the tree and greenhouse branch-cutting hydroponic hybridization are fully utilized, the disadvantages of the outdoor hybridization on the tree and greenhouse branch-cutting hydroponic hybridization are abandoned, thereby improving the hybrid maturity and harvest rate and improving the breeding effect, and the method is very suitable for hybridization breeding of an arbor willow with thin branches; the hybridization method and needed facilities are simple and grasped by general staffs, and suitable for scientific research and production personnel occupied in willow breeding.

Description

technical field [0001] The invention relates to willow crossbreeding technology, in particular to an on-tree control hybridization method for improving the yield and maturity of arbor willow hybrids and improving hybridization efficacy. Background technique [0002] The interspecific and intraspecific genetic variation of willow is large, and the hybrid affinity is high, so crossbreeding is the main means of cultivating new willow varieties. Willow crossbreeding generally adopts two methods: greenhouse cutting branch hydroponics hybridization and outdoor big tree hybridization. The advantages of hydroponic hybridization with cut branches in the greenhouse are that it is easy to control the temperature and humidity, and can artificially control the morning and evening of the flowering period. The disadvantage is that most willow branches are thin and weak, and the nutrients in the branches are difficult to meet the requirements of hybrid development and maturity. Breeding f...

Claims

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Application Information

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IPC IPC(8): A01G2/10A01G17/00A01G7/06A01G31/00A01H1/02
CPCA01G2/10A01G7/06A01G17/005A01G31/00A01H1/02
Inventor 秦光华于振旭宋玉民乔玉玲彭琳
Owner SHANDONG FOREST SCI RES INST
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