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Efficient pear tree rot disease resistance breeding method

A technology for resistance breeding and rot disease, which is applied in the field of efficient pear tree rot disease resistance breeding, can solve the problems of combination, early selection without prompting resistance identification, waste of resources, etc., and achieve land saving, traffic and convenient operation , cost-saving effect

Active Publication Date: 2018-06-29
ZHENGZHOU FRUIT RES INST CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the prior art, early selection of resistance to rot disease was not carried out in the process of pear tree breeding, which greatly restricted the promotion of bred varieties. ; Chinese invention patent CN201310468321.X discloses a method for identifying resistance to pear tree rot disease, but it does not suggest how to combine resistance identification and early selection of breeding, and the selection criteria for resistant plants needs further research

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of efficient pear tree rot resistance breeding method comprises the following steps:

[0035] Step 1: Select "Xingao", a variety with high susceptibility to rot disease, as the female parent, and "Xinyali", a variety with moderate resistance to rot disease, as the male parent;

[0036] Step 2: Collect flower buds at the balloon stage, then peel off the anthers, dry at 25°C after collection, seal and store temporarily at 4°C after loosening the powder, and start pollination at the balloon stage of the female parent flower buds, and then carry out bagging for isolation after pollination, 14 days after pollination Remove the isolation; start bagging the fruit 3 weeks after pollination, and spray the whole plant with 70% thiophanate-methyl 800 times solution and 5% avermectin 4000 times solution within 1 week before bagging; and the day before bagging Soak the mouth of the bag with 500 times of 70% thiophanate-methyl and 1000 times of chlorpyrifos; when bagging, prop...

Embodiment 2

[0046] A kind of efficient pear tree rot resistance breeding method comprises the following steps:

[0047] Step 1: Select "Xingao", a variety with high susceptibility to rot, as the female parent, and "Xiangxiang", a variety with high resistance to rot, as the male parent;

[0048] Step 2: Collect flower buds at the balloon stage, then peel off the anthers, dry at 22°C after collection, seal and store temporarily at 4°C after loosening the pollen, and start pollination at the balloon stage of the female parent flower buds, and then carry out bagging for isolation after pollination, 10 days after pollination Remove the isolation; start bagging the fruit 3 weeks after pollination, and spray the whole plant with 70% thiophanate-methyl 800 times solution and 5% avermectin 4000 times solution within 1 week before bagging; and the day before bagging Soak the mouth of the bag with 500 times of 70% thiophanate-methyl and 1000 times of chlorpyrifos; when bagging, prop up the mouth of ...

Embodiment 3

[0059] A kind of efficient pear tree rot resistance breeding method comprises the following steps:

[0060] Step 1: Select the variety "Zaohong Comis" susceptible to rot as the female parent, and the variety "Wanxiu Pear" highly susceptible to rot as the male parent;

[0061] Step 2: Collect flower buds at the balloon stage, then peel off the anthers, dry at 24°C after collection, seal and store temporarily at 4°C after loosening the powder, and start pollination at the balloon stage of the female parent flower buds, and then carry out bagging for isolation after pollination, 12 days after pollination Remove the isolation; start bagging the fruit 3 weeks after pollination, and spray the whole plant with 70% thiophanate-methyl 800 times solution and 5% avermectin 4000 times solution within 1 week before bagging; and the day before bagging Soak the mouth of the bag with 500 times of 70% thiophanate-methyl and 1000 times of chlorpyrifos; when bagging, prop up the mouth of the bag...

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Abstract

The invention belongs to the technical field of fruit tree breeding, and particularly relates to an efficient pear tree rot disease resistance breeding method. The method comprises the steps of performing hybridized combination selection, hybridization pollination, hybrid seed lamination, seeding and transplanting and pear tree rot disease bacterium inoculation; weeding out disclosed plants according to the filial generation plant number in a hybridized combination; for the hybridized combination with the single plant number being 500 or above, weeding out the single plants with the diseased rate being 40 percent or higher and the disease spot length being 2cm or above; for the hybridized combination with the single plant number being smaller than 500, weeding out the single plants with the diseased rate being 70 percent or higher and the disease spot length being 2cm or above; then, selecting the fullest buds in a 10cm range at the topmost end of the resistance plant to be grafted onto the pyrus betulaefolia stocks.

Description

technical field [0001] The invention belongs to the technical field of fruit tree breeding, and in particular relates to an efficient breeding method for pear tree rot disease resistance. Background technique [0002] Pear Valsa canker, commonly known as "rotten skin disease", is one of the most serious diseases in pear cultivation and production. It mainly harms the main trunk, main branches and side branches of pear trees, causing bark rot and tree vigor to weaken. The yield and quality of pear fruits have declined. The disease has the characteristics of wide occurrence area, high morbidity rate, and difficulty in control. In pear orchards with serious onset, the trees are full of diseased scars, incomplete branches, and even cause a large number of dead trees or destroyed orchards. [0003] Pear is widely cultivated in my country, and is one of the most widely cultivated fruit tree species in my country, and its fruit is also one of the favorite fruits of consumers. Wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01G17/00A01G2/30A01G7/06
CPCA01G7/06A01G17/005A01H1/02
Inventor 王苏珂李秀根杨健侯珲王丽周增强王龙薛华柏苏艳丽
Owner ZHENGZHOU FRUIT RES INST CHINESE ACADEMY OF AGRI SCI
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