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A kind of breeding method of green pagoda cauliflower hybrid

A pagoda flower and hybrid technology, which is applied in the field of selection and breeding of green pagoda cauliflower hybrids, can solve the problems of difficulty in available resources, lack of pagoda cauliflower germplasm resources, etc.

Active Publication Date: 2021-09-14
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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  • A kind of breeding method of green pagoda cauliflower hybrid

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Experimental program
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Effect test

Embodiment 1

[0024] Such as 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 m...

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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Abstract

The invention discloses a method for breeding a green pagoda cauliflower hybrid. In the method, the hybrid progeny of pagoda cauliflower and green cauliflower is obtained through microspore culture or a DH line or a self-bred pure line obtained through traditional breeding. As the male parent, the ogura cytoplasmic male sterile line of common pagoda cauliflower obtained by multi-generation backcrossing is used as the female parent, and a new generation of green pagoda cauliflower hybrid is obtained through crossing. The hybrid has excellent comprehensive resistance, is more cold-tolerant, has green curds, and has better 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 Patents(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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