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Method for obtaining a distant hybrid between cultivating chrysanthemum and related genera

A technology of distant hybrids and closely related genera, applied in horticultural methods, botanical equipment and methods, plant genetic improvement, etc., can solve the problem of weak research, development and utilization of germplasm resources of related genera, and insufficient excavation of resistance genes and utilization issues to achieve the effects of overcoming the barriers of distant hybridization, remarkable ecological and social benefits, and improved varieties

Inactive Publication Date: 2011-08-17
NANJING AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0006] Compared with foreign countries, my country has abundant germplasm resources of Chrysanthemum relatives, but it is still quite weak in the research, development and utilization of germplasm resources of relatives. There are only sporadic reports. The excellent characters of many species, especially Various resistance genes have not yet been fully tapped and utilized, and urgently need to be paid attention to and strengthened

Method used

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  • Method for obtaining a distant hybrid between cultivating chrysanthemum and related genera
  • Method for obtaining a distant hybrid between cultivating chrysanthemum and related genera

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Embodiment

[0045] Implementation example: apply this method to carry out the distant hybridization test between the genus of cultivated chrysanthemum varieties and many closely related genus species successively, and obtain a series of distant hybrids, such as 'Olympic Torch' × Rock Chrysanthemum (Chrysanthemum genus) , 'Zhongshan Jingui'×golden mugwort (Artemisia), 'Zhongshan Zigui'×white crystal chrysanthemum (Chrysanthemum chrysanthemum), 'Hanxiaobai'×Hibiscus chrysanthemum (Hibiscus), etc. Taking the distant hybridization of Chrysanthemum 'Zhongshan Jingui' and Artemisia golden Artemisia as an example, the specific explanation is as follows:

[0046] The cultivated chrysanthemum variety 'Zhongshanjingui' [Dendranthema morifolium 'zhongshanjingui'] was used as the female parent, and the wild species of Artemisia [Artemisia vulgaris] (because of the irregular yellow or white spots of different sizes on the surface of the leaves) was used as the female parent. , named after its golden-y...

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Abstract

The invention obtains a method for obtaining a distant hybrid between chrysanthemum and related genera, belonging to the breeding field of biotechnology. Cultivating chrysanthemum is selected as a female parent, wild related genera species with strong ability to resist diseases and insects and special ornamental value are taken as male parents, the means of tissue culture is adopted to carry out the isolated culture of hybrid embryo to overcome the barrier of zygotic embryo abortion after the distant hybrid between the chrysanthemum and the related genera. Then hybrid morphology identification and in situ hybridization identification are carried out on the obtained progeny materials. The progeny materials are selected to carry out in situ hybridization, wherein, the morphology features such as stem, leaf, inflorescence, epidermal hair and the like of the progeny materials are between both parents and different from the female parent, and shows male parent special characteristics or new characteristics unendowed to both parents, if chromosome components are respectively from both parents, the intergeneric distant hybrid is obtained. The method successfully realizes the distant hybrid of chrysanthemum and a plurality of related generas, improves the existing cultivating chrysanthemum breed and creates a batch of new germ plasms with using value.

Description

1. Technical field [0001] The invention relates to a method for obtaining distant hybrids between cultivated chrysanthemums and closely related genera, and relates to a method for chrysanthemum germplasm innovation, variety improvement and new variety selection of cultivated chrysanthemum varieties and closely related genera species originating in China, belonging to biological The field of technical breeding. 2. Background technology [0002] Chrysanthemum [Dendranthema morifolium] is also known as Juqiu, Ju, Juhua, Nuhua, Huanghua, Zhuying, Jinying, Emperor's Flower, etc. It is native to my country and is one of the top ten traditional famous flowers in China and one of the four major cut flowers in the world. It is also one of the most important ornamental flowers in the world. It has been cultivated for more than 1600 years. It is formed by natural hybridization of Maohua chrysanthemum, wild chrysanthemum and purple wild chrysanthemum and long-term artificial selection (C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04A01H4/00
Inventor 陈发棣邓衍明汤访评陈素梅房伟民管志勇李真王海滨滕年军
Owner NANJING AGRICULTURAL UNIVERSITY
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