Field trial design method for seed selection nursery stage of sugarcane crossbreeding

A technology of hybrid breeding and field experiment, applied in the direction of botany equipment and method, application, plant gene improvement, etc., can solve the problems of being easily affected by the environment, small population size, difficulty in selection, etc., to reduce the cost of experiment, easy to operate, The method is simple and effective

Inactive Publication Date: 2017-08-08
SUGARCANE RES INST OF YUNNAN ACADEMY OF AGRI SCI
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Problems solved by technology

Because most of the target traits for sugarcane breeding are quantitative traits, they are easily affected by the environment. At the same time, in the "hybrid garden" stage, each

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  • Field trial design method for seed selection nursery stage of sugarcane crossbreeding

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[0019] The design method of field experiment in the selection nursery stage of sugarcane hybrid breeding is as follows:

[0020] (1) For each clone or genotype material selected in the hybrid nursery, only one stem is cut and planted in the seed nursery, and the number of each selected material is the number of the combination. For example, the number of the combination (Yuetang 73-204×CP72-1210) is 1. If the combination is selected for 80 materials, the number of each selected material is the number 1 of the combination;

[0021] (2) The row length of the field trial in the selection nursery is 1.5m, and the row spacing is 1.0-1.2m. One row is planted for each selected material, with 8-10 buds per row. The selected materials for each combination are planted sequentially, and the control varieties are arranged according to the general situation of the test site. When planting, put each stem (1 cane stem is 1 selected material) into the row, and cut the stem into 3 buds / segment wi...

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Abstract

The invention discloses a field trial design method for a seed selection nursery stage of sugarcane crossbreeding, which comprises the steps: one stem is cut from each clone or genotype material selected from a crossbreeding nursery, and the one stem is planted in a seed selection nursery, wherein the seed selection nursery field test is 1.5 m in line length and 1.0 to 1.2 m in line spacing, each selected material is planted in 1 line, and the bud amount is 8 to 10 buds per line; all the selected materials in a combination are planted in order, while the control species are arranged; during planting, each stem is placed into the line, the stem is cut into 3 buds per section with a knife, the sections are evenly planted in the line, while excess sugarcane buds are removed; for a combination of which the number of selected materials reach 60 and more, the selected materials is divided equally, and repeatedly planted, the number of repetition is 2 to 4; for a combination of which the number of elected materials is less than 60, the selected materials are planted in order. According to the invention, the breeding efficiency can be improved, the test cost is reduced, and the method is simple and effective and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of field experiment design method for the selection and breeding of new sugarcane varieties, and is mainly used in the seed selection nursery stage of the five-garden breeding program of sugarcane cross breeding to guide the development of field experiments and to breed excellent new varieties of sugarcane. Background technique [0002] Sugarcane is the main sugar crop in my country, and the output of sucrose accounts for more than 90% of the total sugar. Hybrid breeding is currently the main way to cultivate new varieties of sugarcane, widely adopted by countries all over the world. The "five gardens" selection is the main selection procedure used in sugarcane hybrid breeding in my country. After being screened by the "five gardens" test, the selected materials will enter the regional test and production test, and finally be approved and promoted. [0003] "Seed selection garden" is the second stage in th...

Claims

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Application Information

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IPC IPC(8): A01H1/04
CPCA01H1/04
Inventor 刘家勇赵培方昝逢刚覃伟赵俊夏红明赵丽萍姚丽杨昆吴才文陈学宽吴转娣朱建荣赵勇
Owner SUGARCANE RES INST OF YUNNAN ACADEMY OF AGRI SCI
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