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A planting method for identification of combining ability of maize dh line

A planting method and combining ability technology, which is applied in the field of planting methods and zone-zoning tools for the identification of combining ability of DH lines in maize, can solve the problems of undetermined related traits and properties, rich variety of variations, increased breeding costs, etc., and achieve convenient cross-pollination , clear groups, and the effect of saving breeding costs

Active Publication Date: 2022-05-13
张掖市易农农业科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its complex heredity and rich variety of variations, it has the disadvantage of too long a period in the conventional breeding process.
The above-mentioned problems can be solved by adopting haploid breeding, and at the same time, a large number of DH lines of maize have been obtained, but the relevant traits and properties of these new DH lines cannot be determined, and it is necessary to carry out research on their biological characteristics, stress resistance and genetic characteristics. Identification, especially the identification of combining ability is particularly important, and the existing planting methods require a lot of work in pollination and harvest classification, which is time-consuming and labor-intensive, which greatly increases the cost of breeding

Method used

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  • A planting method for identification of combining ability of maize dh line
  • A planting method for identification of combining ability of maize dh line
  • A planting method for identification of combining ability of maize dh line

Examples

Experimental program
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Effect test

Embodiment 1

[0023] A planting method for identifying the combining ability of corn DH lines, specifically comprising the following steps:

[0024] S1. Classification of types: According to the number of leaves of the DH lines, the maize DH lines to be identified are divided into three types according to the maturity stage: early maturity, middle maturity and late maturity, and then each type of maize DH lines to be identified is divided into NSS groups according to heterosis groups and SS groups;

[0025] S2. Numbering: Number the DH series according to the division type and quantity. For example, the first DH series of the early-maturing NSS group can be compiled as: early-maturing is coded as E, NSS group is coded as N, E-N-0001

[0026] S3. Select the test species: select 20-30 corresponding test species for each group according to the heterosis pattern;

[0027] S4. Sowing: Before sowing, divide the corresponding planting area according to the ripening period and heterosis group, pla...

Embodiment 2

[0035] A planting method for identifying the combining ability of corn DH lines, specifically comprising the following steps:

[0036] S1. Classification of types: According to the number of leaves of the DH lines, the DH lines of maize to be identified are divided into early-maturing, mid-maturing and late-maturing types. Among them, early-maturing means that the number of leaves of its parents is less than 15, and mid-maturing means that the number of leaves of its parents In 15-18 pieces, mid-maturity means that the number of leaves of its parents is more than 18 pieces.

[0037] After the maize DH lines to be identified are divided into early-maturing, mid-maturing and late-maturing varieties, they can be sown according to the different maturity periods of the corresponding test species to ensure that different DHs at different maturity periods can meet the corresponding test species at the flowering period, and can be tested. Cross pollination, improve pollination concent...

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Abstract

The invention provides a planting method for identifying the combining ability of corn DH lines. Firstly, according to the number of leaves of the DH lines, the corn DH lines to be identified are divided into three categories: early maturity, middle maturity and late maturity, and then each The maize DH lines to be identified were divided into NSS group and SS group according to the heterosis group. After the categories were divided, the maize DH lines to be identified were planted in the planting areas corresponding to the maturity period and blood relationship. The number of planting holes in each corn DH line is 5-8. When pollinating, it is pollinated in the direction of the section, and the same pollen can be pollinated to ears of different DH lines. The operation is simple and the pollen is not easy to be polluted and error-prone. Low requirements and high work efficiency; when harvesting, harvest according to the row direction, which can realize different combinations of the same DH series to be collected into one group, and the groups are clear in the subsequent identification of combining ability, and there is no need to hire manual labor for grouping and classification, saving a lot of labor. The identification method is simple and fast in operation, saves identification time and breeding cost.

Description

technical field [0001] The invention relates to the field of agricultural breeding, in particular to a planting method and a division tool for identifying the combining ability of a corn DH line. Background technique [0002] Corn is an annual herbaceous plant of the grass family Zea genus. It is an important food crop and feed crop, and it is also the crop with the highest total output in the world. Its planting area and total output are second only to rice and wheat. Corn has always been known as a longevity food, rich in protein, fat, vitamins, trace elements, cellulose, etc., and has great potential for developing high-nutrition, high-biological function foods. However, due to its complex heritability and rich variety of variation, there is a shortcoming of too long period in the conventional breeding process. The above-mentioned problems can be solved by adopting haploid breeding, and at the same time, a large number of DH lines of maize have been obtained, but the re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/20A01H1/02A01G7/00
CPCA01G22/20A01H1/02A01G7/00
Inventor 赵向田王婵张宇马海渊王勇
Owner 张掖市易农农业科技有限公司
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