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Method for breeding novel cockscomb specie by epigenetics principle and distant hybirdization

An epigenetic and distant hybrid technology, applied in the field of flower breeding in modern agriculture, can solve the problems of declining stress resistance and disease resistance, single inflorescence type, limited ornamental value, etc., and achieve the effect of strong disease resistance.

Active Publication Date: 2015-08-12
HUBEI UNIV
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Problems solved by technology

After long-term artificial cultivation and selection, cockscomb has formed ornamental characteristics such as obvious main stem, few branches, long and wide leaves, and crown inflorescence, but its stress resistance and disease resistance have declined significantly, and the inflorescence type is single. Limit the development of ornamental value

Method used

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  • Method for breeding novel cockscomb specie by epigenetics principle and distant hybirdization

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Experimental program
Comparison scheme
Effect test

Embodiment

[0025] Embodiment: a kind of selection and breeding of cockscomb showing three inflorescence types of spike, crown and Pteris simultaneously

[0026] a. Selection of distant parents and hybridization and hormone treatment

[0027] The cultivar Celosia coliformis was used as the female parent, and Ejin No. 1 was used as the male parent. The plant height of Cockscomb is 60cm-75cm, with a single red crown, red leaves, and light red stems; the plant height of No. 1 is 138cm-170cm, multi-branched, scattered spikes, the tip of the inflorescence is lavender, and the leaves are green. Stem green.

[0028] From late July to mid-September in Wuhan, from 6:00 to 9:00 in the morning, perform thinning and emasculation treatment on the cultivated cockscomb, and put them in paper bags; from 10:30 to 12:00, use tweezers to take the green pea Put the anthers of No. 1 in a small petri dish, use a clean brush to stick the pollen on the emasculated stigma of the cultivated Celosia celosia, and ...

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Abstract

The invention provides a method for breeding a novel cockscomb specie by epigenetics principle and distant hybridization. The method comprises the following steps of a, carrying out distant hybirdization on a coronary cultivated specie and feather cockscomb and carrying out hormone treatment to obtain filial generation F1-1, b, carrying out hybridization on the coronary cultivated specie and Vietnam red to obtain filial generation F1-2, c, compounding the filial generation F1-1 and F1-2 to obtain filial generation CCF1, d, carrying out backcrossing on the CCF1 and the coronary cultivated cockscomb specie, e, controlling growth of cockscomb plants with spicate, coronary and phoenix tail-shaped inflorescences according to difference of a temperature and illumination, selecting hybrid filial generation and carrying out directional cultivation, and f, carrying out cultivation for 5 generations to obtain the novel cockscomb specie simultaneously with spicate, coronary and phoenix tail-shaped inflorescences. The method can breed the novel ornamental cockscomb specie with multiple types of inflorescences.

Description

technical field [0001] The invention relates to genetic breeding technology, in particular to a method for selecting and breeding new varieties of cockscomb flower by utilizing the principle of epigenetics and distant hybridization technology, and belongs to the technical field of flower breeding in modern agriculture. Background technique [0002] In the breeding process of fine varieties, intraspecific hybridization has high affinity and no reproductive isolation phenomenon exists, so breeding experts have always mainly used the genetic resources within the cultivated species. However, with the increase of the number of intra-species hybridization, on the one hand, good genes are diluted; on the other hand, inter-specific genes are relatively limited, and intra-specific gene resources in intra-specific hybrid cultivation are becoming more and more scarce. It is difficult to breed breakthrough new varieties, while wild The species has preserved and accumulated rich genetic ...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
Inventor 喻铭灿黄丽关艳张广雨郑伟任俊宋兆建蔡得田
Owner HUBEI UNIV
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