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Hybrid purple romanesco broccoli breeding method

A pagoda flower and hybrid technology, which is applied in the field of breeding of purple pagoda cauliflower hybrids, can solve problems such as the emergence of no purple pagoda cauliflower varieties or breeding research work, etc., and achieves excellent comprehensive character performance in the field, rich types, and cyanobacteria. The effect of high glycoside content

Inactive 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

[0003] The pagoda cauliflower currently on the market is light green, and the seeds come from abroad. There is no emergence or breeding research of purple pagoda cauliflower varieties at home and abroad.

Method used

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  • Hybrid purple romanesco broccoli breeding method

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Effect test

Embodiment 1

[0024] Such as figure 1 Shown, present embodiment provides the breeding method of purple pagoda cauliflower hybrid, specifically comprises the following steps:

[0025] 1) Screening and identification of germplasm resources. Since 2010, 7 pagoda-type cauliflower germplasm resources have been collected, and 3 purple cauliflower germplasm resources have been collected since 2013. After field planting, investigation and identification of agronomic traits, 1 ogura cytoplasmic male sterile pagoda-shaped cauliflower and 3 fertile pagoda-shaped cauliflowers, as well as 2 available curd-compact spherical purple cauliflower species were screened out quality.

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

[0027] 3) Selection and breeding of recurrent parents. Using fertile pagoda-type broccoli hybrids as donor...

Embodiment 2

[0033] 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-compatible DH line, and seeds can be obtained by placing bees in a greenhouse.

Embodiment 3

[0035] If the first generation of hybrid species requires a large amount of seed production, it is possible to find a suitable area for isolated seed collection in open-air sun borders. As a special vegetable, under normal circumstances, isolated seed production can be carried out in a greenhouse.

[0036] 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.

[0037] 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 period of the female parent is about 15 days later than that of the male parent, it is necessary to sow 15-20 days earlier. Taking Hangzhou as an example, the sowing period of the female parent is...

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Abstract

The invention discloses a hybrid purple romanesco broccoli breeding method, which takes purple DH line or inbred pure line obtained by microspore culture or through traditional breeding and inbred homozygous as male parent, takes common romanesco broccoli ogura cytoplasmic male sterile line obtained by multi-generation backcross and transfer as female parent, and obtains purple romanesco broccolihybrid generation new variety through cross breeding. The obtained purple romanesco broccoli is prepared from ogura cytoplasmic male sterile line and purple cauliflower DH line, and the recurrent parent is self-compatible and can be pollinated by bees to carry out the reproduction of hybrid seeds and sterile lines, and thus the seed production technology is reliable, and the seed production cost is greatly reduced.

Description

technical field [0001] The invention belongs to the field of plant breeding, and in particular relates to a breeding method for purple pagoda cauliflower hybrids. Background technique [0002] Pagoda cauliflower (Brassica oleracea L.var.botrytis cv.romanesco), also known as Roman cauliflower, has special appearance characteristics, like a Buddha topknot, arranged in a regular Fibonacci sequence fractal. Similar to the large curd. Pagoda cauliflower appeared in Italy in the 16th century and is a type of cauliflower variety of Brassica oleracea var. Pagoda cauliflower was only planted in my country at the end of the last century. It is rich in vitamin C, vitamin K, and crude fiber. It tastes similar to ordinary cauliflower and has a better ornamental value. It is gradually known by consumers as a special dish. [0003] The pagoda cauliflower currently on the market is light green, and the seeds come from abroad. There is no emergence or breeding research of purple pagoda cau...

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 顾宏辉虞慧芳王建升赵振卿盛小光沈钰森
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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