Corn system selection efficient testing and matching method
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A corn and high-efficiency technology, applied in the field of crop genetics and breeding, can solve the problems of low efficiency of line selection and matching, and achieve the effects of easy pollination quality, ensuring work quality and efficiency, and preventing mixing
Inactive Publication Date: 2020-12-29
LIANYUNGANG ACAD OF AGRI SCI
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[0004] The purpose of the present invention is to provide an easy-to-operate, time-saving, labor-saving and high-quality corn line selection and matching method for the technical problem of low efficiency of line selection and matching in the current corn inbred line breeding process
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Embodiment 1
[0026] A kind of high-efficiency test and match method for maize line selection, the operation steps of the method are as follows:
[0027] (1) Determine 210 selected lines derived from foreign hybrid 78599 as the female parent of the test line, and select 5 materials from the backbone line of the unit and suitable for this ecological zone as the male parent of the test species, of which 3 are yellow-colored genetically related , which are respectively Chang 7-2, 702F and L051, and 2 parts are of reid blood, which are respectively Zheng 58 and L112. The male parents of each test species were numbered as F1, F2, F3, F4, and F5.
[0028] (2) Separate the test crossing and self-crossing addition work of the female parent of the line to be tested, and divide the self-crossing area and the test-matching area. The distribution area is planned separately. The female parents of the lines to be tested in the measurement and distribution area are numbered M1, M2, M3, ..., M210, and the...
Embodiment 2
[0039] A kind of high-efficiency test and match method for maize line selection, the operation steps of the method are as follows:
[0040] (1) Determine the 336 selected lines derived from foreign hybrid X1132 as the female parent of the test line, select 6 materials from the backbone line of the unit and suitable for this ecological zone as the test species, and 2 of them are from the yellow-modified line, respectively. Weichang 7-2, L051. 2 copies are from L422 and S121 of Huanglu lineage, and 2 copies are from group 78599, X178 and Lian 583 respectively. The male parents of each test species were numbered as F1, F2, F3, F4, F5, and F6.
[0041] (2) Separate the test crossing and self-crossing addition work of the female parent of the line to be tested, and divide the self-crossing area and the test-matching area. The distribution area is planned separately. The female parents of the lines to be tested in the measurement and distribution area are numbered M1, M2, M3, ..., ...
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Abstract
The invention discloses a corn system selection efficient testing and matching method. The method comprises the following steps that (1) the number of to-be-tested system female parents and the numberof tester male parents are determined in system selection; (2) a selfing area and a testing and matching area are formed through dividing; (3) the testing and matching area is divided into into a tester male parent area and ato-be-tested system female parent area, one-to-one correspondence planting is adopted in the planting method, one set of male parent corresponds to one set of female parent,and the male parents and the female parents are planted on one ridge; (4) the tester male parents are sown; (5) the to-be-tested system female parents are sown; (6) after 45-55 days of sowing, uniformplate changing and numbering are carried out on each testing and matching material of the to-be-tested system female parents in the testing and matching area; (7) the to-be-tested system female parents are bagged and pollinated; (8) harvesting is carried out. The method is an easy-to-operate, time-saving, labor-saving and high-quality corn system selection testing and matching method, a large amount of energy is saved for researchers in a nervous pollination period, pollination quality can be easily checked, concentrated repeated pollination can be achieved, it is guaranteed that all to-be-tested systems are solid, work planes can be completed easily, and breeding work quality and efficiency are guaranteed.
Description
technical field [0001] The invention belongs to the technical field of crop genetics and breeding, and in particular relates to a high-efficiency testing and matching method for maize line selection. Background technique [0002] Since the 21st century, corn has surpassed rice and wheat to become the world's largest crop. Corn is grown in more than 100 countries around the world. Corn is the most widely planted crop. Major corn producing countries include the United States, China, Brazil, Argentina, and the European Union. , Mexico and India, among which China and the United States are the two largest corn producers in the world. Corn is the second largest crop in my country, second only to rice. It has a wide distribution in China, mainly in the northeast, north and southwest regions, forming a long and narrow corn planting belt from northeast to southwest. This belt-shaped area concentrates the corn planting in China 85% of the total area and 90% of the output. Jilin, Heb...
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