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Breeding method of green pagoda cauliflower hybrid

A technology of pagoda flower and hybrids, which is applied in the field of breeding of green pagoda cauliflower hybrids, can solve the problems of pagoda cauliflower germplasm resources and the difficulty of available resources, etc., achieve strong heterosis, reduce seed production costs, and comprehensive Excellent resistance effect

Active Publication Date: 2019-10-08
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are very few germplasm resources of pagoda cauliflower, and most of them are sterile hybrids, so the available resources are more difficult

Method used

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  • Breeding method of green pagoda cauliflower hybrid

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] like figure 1 Shown, present embodiment provides a kind of breeding method of green pagoda cauliflower hybrid, specifically comprises the following steps:

[0025] 1) Screening of germplasm resources. Since 2010, 7 pagoda-type cauliflower germplasm resources and 2 green cauliflower germplasm resources have been collected. Through the observation and identification of agronomic characters, 1 ogura male sterile pagoda-type cauliflower and 3 fertile pagoda-type cauliflowers, as well as 2 usable green cauliflower germplasms with different ripening stages were screened out.

[0026] 2) Male sterility source selection. The ogura male sterile pagoda-type cauliflower hybrid, denoted as bj1841, showed normal petals and nectary, and it was used as a male sterile source breeding material.

[0027] 3) Selection and breeding of recurrent parents. Using fertile pagoda-type broccoli hybrids as donors, denoted as RCK01, 13 strains of double haploid series were obtained through micr...

Embodiment 2

[0031] Embodiment 2 parent breeding

[0032] Because pagoda cauliflower needs to be cut many times and cultivated over winter, it has a strong winter nature, so parents need to be bred in a greenhouse to prevent the wounds after cutting from being infected by rainwater. Because of the self-compatibility of the recurrent parent, seeds can be obtained through assisted pollination by releasing bees in a separate shed; the male sterile line is planted in a separate shed with a ratio of 1:1 to the male sterile line and the recurrent parent, which needs to be pollinated by releasing bees. Seeds are obtained by backcrossing; the male parent is a self-incompatible DH line, which needs to be pollinated manually at the flowering stage in a greenhouse to obtain seeds.

Embodiment 3

[0033] Embodiment 3 hybrid seed production

[0034] If a large amount of seed production is required for the first-generation hybrid species, it is possible to find a suitable area for isolated seed collection in open-air sun borders, and under normal circumstances, isolated seed production can be carried out in a greenhouse.

[0035] (1) Choose a planting greenhouse: According to the production area, choose an ordinary plastic greenhouse, glass greenhouse or solar greenhouse. It is best not to plant cruciferous crops in the previous work, or the greenhouse soil has been sterilized. Apply base fertilizer and borax before transplanting.

[0036] (2) Ratio of sowing and planting: the parents raise seedlings and transplant, and plant according to the ratio of female parent: male parent 2:1 or 3:2. Because the growth periods of the female parent and the male parent are slightly different, and because the growth periods of multiple male parents are different, it is necessary to st...

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PUM

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Abstract

The invention discloses a breeding method of a green pagoda cauliflower hybrid. A green pagoda cauliflower first-filial generation new variety is obtained by subjecting a pagoda cauliflower and greencauliflower hybrid filial generation to microspore culture or taking conventional breeding selfing homozygous DH line or selfing pure line as a male parent and common pagoda cauliflower ogura cytoplasm male sterile line obtained by multi-generation backcross breeding as a female parent by means of hybridization. The hybrid is excellent in comprehensive resistance, resistant to cold and green in flower ball, thereby having high ornamental value.

Description

technical field [0001] The invention belongs to the technical field of plant breeding, and in particular relates to a method for breeding green pagoda cauliflower hybrids. Background technique [0002] Pagoda cauliflower (Brassica oleracea L.var.botrytis cv.romanesco), also known as Roman cauliflower, first appeared in Rome, Italy in the 16th century, hence the name Roman cauliflower. . It has been introduced into my country since the end of the 20th century, and it has only been cultivated for more than 20 years in my country. Pagoda cauliflower is rich in vitamin C, vitamin K, and crude fiber. It tastes the same as ordinary cauliflower with tight curds, but its curds are like Buddha's hair. The large curd is composed of many small curds with similar shapes, showing a Fibonacci sequence Fractal arrangement, both nutritional and ornamental. [0003] Ordinary pagoda cauliflower seeds come from abroad, and there is no emergence or breeding research work of self-developed pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 王建升顾宏辉虞慧芳赵振卿盛小光沈钰森
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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