Radiation breeding and selecting method for tea tree

A technology of radiation breeding and tea tree, applied in the fields of botanical equipment and methods, application, plant genetic improvement, etc., can solve the problems of self-incompatibility, difficult to produce breakthroughs, and long growth cycle.

Inactive Publication Date: 2015-11-18
湖南省茶叶研究所
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  • Abstract
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  • Application Information

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Problems solved by technology

Due to its high heterozygosity, long growth cycle, and self-incompatibility, the seed setting rate is not high. Due to the high concentration of backbone parents in traditional cross breeding, th

Method used

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  • Radiation breeding and selecting method for tea tree
  • Radiation breeding and selecting method for tea tree

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The determination of embodiment 1 radiation dose

[0017] In 2012, in Hunan, the fine varieties Bixiangzao, Dapengcha, Jianbohuang No. 13, Jinxuan, Lizaoxiang, Xiangbolu, Yucui, and Quanyeqi were selected as the female parents, and Yaubei and Quanjiao were granted as female parents. Mixed pollen of Ye Qi and Bi Xiangzao.

[0018] When harvesting hybrid seeds, it is required that the seeds have a clarity of ≥95%, a moisture content of 30-40%, and store at 4°C after sealing.

[0019] In the second year, the full-grained seeds will be selected in the Radiation Breeding Research Center of the Institute of Atomic Energy, Hunan Academy of Agricultural Sciences. 60 Co-γ-ray radiation, the radiation dose is 0, 20, 40, 60, 80, 100Gy, the irradiated seeds are planted in the field in the same year, the row spacing is 60cm, the plant spacing is 30cm, and the survival rate and seedling height of the seedlings are compared with the original female parent. The investigation of where...

Embodiment 2

[0025] Embodiment 2 selects and breeds good tea tree varieties with the tea tree radiation breeding breeding method of the present invention

[0026] The seedlings obtained after the radiation dose of 20-60Gy in Example 1 were selected, and the original female parent was used as a control to select beneficial mutant lines. The goals of trait selection are: tall plants, strong growth vigor (referring to thick stems, large leaves, and robust growth of the whole plant), strong tenderness of buds and leaves, and strong stress resistance (referring to disease resistance, drought resistance, and cold resistance), etc. The selection criterion is that one or more of the above traits are superior to the parent.

[0027] For 4 consecutive years, according to the above selection criteria, the beneficial mutant lines selected from the M1 generation (seedlings planted after radiation) were selected for excellent line selection, and a local main cultivar C. chinensis was added as a control....

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Abstract

The invention relates to a radiation breeding and selecting method for a tea tree. The radiation breeding and selecting method comprises the following steps: carrying out radiation treatment on hybrid seeds of the tea tree by adopting <60>Co-gamma rays, planting the seeds, selecting to obtain beneficial variant plants by adopting the female parent as the contrast, and carrying out qualification test, stability observation and regional testing to breed a novel variety of the tea tree. With the adoption of the radiation breeding and selecting method, variation with high frequency and rich type can be generated for the tea tree; through ground planting and selecting, the beneficial variation type can be obtained; and through the comparison qualification test on the aspects of yield, quality, resistance and adaptation, the novel variety of the tea tree with synchronous improvements on multiple important characters including high yield, high quality, high resistance, wide application and the like is realized.

Description

technical field [0001] The invention belongs to the field of plant breeding, in particular to a tea tree radiation breeding selection method. Background technique [0002] Tea tree (Camelliasinesis (L.) O.Kuntze) is an important economic crop. The tea drink made from its leaves has multiple health care functions for people and is known as a healthy drink in the 21st century. Because of its high heterozygosity, long growth cycle, and self-incompatibility, the seed setting rate is not high. Due to the high concentration of backbone parents in traditional cross breeding, the genetic background of the parents is narrow, and the potential for recombination and improvement of offspring is limited. It is difficult to produce higher Big breakthrough. Moreover, the breeding cycle is as long as 16 years. [0003] Radiation mutation breeding has been recognized by scholars at home and abroad today, and has become one of the important breeding methods. It can break the genetic backgro...

Claims

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Application Information

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IPC IPC(8): A01H1/06
Inventor 杨培迪赵洋杨阳刘振成杨宁静刘勇
Owner 湖南省茶叶研究所
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