CN103598086B - Method for breeding maize inbred lines by use of suwan1 group - Google Patents
Method for breeding maize inbred lines by use of suwan1 group Download PDFInfo
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- CN103598086B CN103598086B CN201310533066.2A CN201310533066A CN103598086B CN 103598086 B CN103598086 B CN 103598086B CN 201310533066 A CN201310533066 A CN 201310533066A CN 103598086 B CN103598086 B CN 103598086B
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Abstract
The invention discloses a method for breeding maize inbred lines by use of suwan1 group; according to the method, the suwan1 group is used, 5 generations of adaptive modification of the suwan1 group is performed in the southern region of yunnan, and each generation is single plant self breeding; at the sixth generation, after the single plant self breeding, ten disease-resistant lodging-resistant clusters with good fecundity are harvested, the clusters are separated and seeds are removed, then the seeds are planted in the central region of yunnan in summer and in the southern region of yunnan in winter of the same year, and then are continued to plant for 5 generations, and each generation is single plant self breeding; at the twelfth generation, the seeds are planted into ten head progeny rows, after the single plant self breeding, 2-3 superior self breeding clusters are selected from each head progeny row, the clusters are separated and seeds are removed, then the seeds are planted in the central region of yunnan in summer and in the southern region of yunnan in winter of the same year, and then are continued to plant for 6 generations, and in each generation, seeds harvested by an older generation are planted into head progeny rows, and a pedigree method is used for selection; a plurality of superior maize inbred lines are bred by the method, and the technical problems that the hereditary basis of maize germplasm in the prior art is narrow and the maize germplasm adapting to tropical and subtropical regions in China is lacking can be solved.
Description
Technical field
The invention belongs to crop breeding technical field, relate in particular to a kind of method utilizing Suwan1 unexpected mass incident corn inbred line.
Background technology
Corn is the maximum cereal crops of China's cultivated area, and Ye Shi China is a fastest-rising grain variety of consumption demand in period from now on.
Although domestic corn variety quantity is more, but original inbred line level is low, mostly is Temperate zone germplsam, and improved variety homogeneity is serious, high yield, high-quality, many anti-, wide suitable improved seeds are relatively less, are difficult to apply in tropical and subtropical region such as Yunnan Province of China.The narrow primary limiting factor having become China's corn breeding and production sustainable development of Germplasms, the parent 86.3% that China promotes more than 100,000 hectares crossbreed according to statistics concentrates in Lancaster, Reid, tangsipingtou, the large Heterotic Groups of Lucia Red Cob four, fragile hereditary basis not only seriously limits Genetic improvement innovation and new product seed selection work, and very easily brings out Corn diseases and insect pests eruption and prevalence.
Southwest is one of China main maize area, long-term cultivated area accounts for 1/4 of national maize sown area, but because the harm of this area's ecotope complicated, sick worm is serious, lack the torrid zone, the strong advantage corn hybrid seed in subtropics of adaptation this area for a long time, Level Maize Production is well below average national level.
The torrid zone, subtropics corn are the important germ plasm resource of improvement, amplification Temperate maize, but the torrid zone, subtropics corn has strong photoperiodic reaction, seriously limit the torrid zone, subtropics corn in effective utilization of China.
Chinese yunnan is economized has unique geography and climate advantage, the torrid zone, subtropics and Temperate maize be energy normal growth all, be the desirable place of carrying out tropical and subtropical maize germplasm improvement innovation, can be used as the torrid zone, " bridge " that subtropics corn shifts to northern China.Utilize this advantage, in Yunnan Province, improvement innovation is carried out to large quantities of torrid zones of the ground introductions such as corn origin and Genetic Diversity Centers Mexico, South Africa, Thailand, subtropics corn; By technology passivation photoperiods such as shuttle breeding and warm kind of matter hybridization, improve the seed selection a collection of polymerization torrid zone, the high-quality of subtropics corn good characteristic, high yield, multi-resistant corn inbred line, greatly widened the hereditary basis of China's corn germplasm, strong advantage corn hybrid seed seed selection being adapted to Southwestern China area has a very important role.
Summary of the invention
The technical problem to be solved in the present invention overcomes the corn germplasm that existing corn germplasm hereditary basis is narrow, lack adaptation tropical and subtropical region, its objective is and provide a kind of method utilizing Suwan1 unexpected mass incident corn inbred line.
For solving the problems of the technologies described above, technical scheme of the present invention is as follows:
Use Suwan1 colony, in the southern regions of the Yunnan Province (i.e. southern areas, Yunnan Province) through the adaptability improvement of 5 generations, per in generation, is all after individual plant selfing, gathers in the crops disease-resistant anti-fall and 50, the fruit ear that fecundity is good, and every fringe takes off plantation after the seed mixing of equal number, when the 6th generation, after individual plant selfing, gather in the crops disease-resistant anti-fall and 10, the fruit ear that fecundity is good, divide fringe threshing, plant in the summer of the middle regions of the Yunnan Province (i.e. Centure Area Yunnan Province) subsequently, same year is in the winter planting of the southern regions of the Yunnan Province, continue plantation 5 generation, per in generation, all plants into 10 head progeny rows, individual plant selfing, each head progeny row selects 10, excellent selfing fruit ear, the seed that every fringe takes off equal number is mixed into 50 plantations, when the 12nd generation, plant into 10 head progeny rows, after individual plant selfing, each head progeny row selects excellent selfing fruit ear 2-3, divide fringe threshing, plant in the summer of the middle regions of the Yunnan Province subsequently, the winter planting of same year the southern regions of the Yunnan Province, continue plantation 6 generation, per the seed that previous generation gathers in the crops all is become head progeny row by generation, pedigree method is adopted to select, each selection fine individual plant selfing 5-10 strain in the head progeny row that performance is excellent, ear selection is carried out again during results, each head progeny row selects excellent selfing fruit ear 2-3, divide fringe threshing, by the method, select a collection of excellent corn inbred line.A collection of high yield, high-quality, many anti-superior corn kinds has finally been bred as with the excellent corn inbred line of institute's seed selection.
Compared with the prior art, the invention has the beneficial effects as follows:
The present invention by the comprehensive means of bulk method, pedigree method and the middle regions of the Yunnan Province, the southern regions of the Yunnan Province shuttle breeding from Suwan1 colony continuous multi-generation selfed breeding corn inbred line, concentrate the excellent resistance of tropical corn germplasm, performance product are of fine quality, better resistance and output high, widen the Germplasm Bases of China's corn, solve the technical problem that existing corn germplasm hereditary basis is narrow, lack the corn germplasm adapting to tropical and subtropical region, the corn hybrid seed adapting to China tropical and subtropical region for seed selection is laid a good foundation.
Biomaterial Suwan1 colony (Yan Shuqin etc. in non-patent literature involved in the present invention, to the evaluation importing Suwan1 corn germplasm Breeding of Inbred Lines, Maize Sciences, 2007,15(1): 62-66) open, and above-mentioned biomaterial has preservation applicant, applicant ensures to provide to the public in 20 years from present patent application day.No. 2238, Panlong District Beijing Road, Kunming, Yunnan Province, applicant contact address, Cereal Crops Inst., Yunnan Prov. Agricultural Academy, telephone number 0871-5892503.
Accompanying drawing explanation
Figure utilizes Suwan1 unexpected mass incident corn inbred lines process schematic.
Embodiment:
Further illustrate the present invention below in conjunction with embodiment, but be not construed as limiting the invention.
In (1st generation) summer in 1991: introduce Suwan1 colony, summer, individual plant selfing, gathered in the crops disease-resistant anti-fall and 50, the fruit ear that fecundity is good in the plantation of Yunnan Province's Kaiyuan City, and every fringe takes off the seed mixing of equal number.
(2nd generation) winter in 1991: by upper one season results seed in the plantation of Jinghong City, Yunnan Province, individual plant selfing, gathers in the crops disease-resistant anti-fall and 50, the fruit ear that fecundity is good, and every fringe takes off the seed mixing of equal number.
(the 3rd generation) summer in 1992: by upper one season results seed in the plantation of Yunnan Province's Kaiyuan City, individual plant selfing, gathers in the crops disease-resistant anti-fall and 50, the fruit ear that fecundity is good, and every fringe takes off the seed mixing of equal number.
(the 4th generation) winter in 1992: by upper one season results seed in the plantation of Jinghong City, Yunnan Province, individual plant selfing, gathers in the crops disease-resistant anti-fall and 50, the fruit ear that fecundity is good, and every fringe takes off the seed mixing of equal number.
(the 5th generation) summer in 1993: by upper one season results seed in the plantation of Yunnan Province's Kaiyuan City, individual plant selfing, gathers in the crops disease-resistant anti-fall and 50, the fruit ear that fecundity is good, and every fringe takes off the seed mixing of equal number.
(the 6th generation) winter in 1993: by upper one season results seed in the plantation of Jinghong City, Yunnan Province, individual plant selfing, gathers in the crops disease-resistant anti-fall and 10, the fruit ear that fecundity is good, point fringe threshing.
(the 7th generation) summer in 1994: the seed that a upper season gathers in the crops is planted into 10 head progeny rows at Yunnan Province's Kaiyuan City, individual plant selfing, and each head progeny row selects 10, excellent selfing fruit ear, and the seed that every fringe takes off equal number is mixed into 50.
(the 8th generation) winter in 1994: the seed that a upper season gathers in the crops is planted into 10 head progeny rows in Jinghong City, Yunnan Province, individual plant selfing, and each head progeny row selects 10, excellent selfing fruit ear, and the seed that every fringe takes off equal number is mixed into 50.
(the 9th generation) summer nineteen ninety-five: the seed that a upper season gathers in the crops is planted into 10 head progeny rows in Kunming, Yunnan Province, individual plant selfing, and each head progeny row selects 10, excellent selfing fruit ear, and the seed that every fringe takes off equal number is mixed into 50.
(the 10th generation) winter nineteen ninety-five: the seed that a upper season gathers in the crops is planted into 10 head progeny rows in Jinghong City, Yunnan Province, individual plant selfing, and each head progeny row selects 10, excellent selfing fruit ear, and the seed that every fringe takes off equal number is mixed into 50.
(the 11st generation) summer in 1996: the seed that a upper season gathers in the crops is planted into 10 head progeny rows at Yunnan Province's Kaiyuan City, individual plant selfing, and each head progeny row selects 10, excellent selfing fruit ear, and the seed that every fringe takes off equal number is mixed into 50.
(the 12nd generation) winter in 1996: the seed that a upper season gathers in the crops is planted into 10 head progeny rows in Jinghong City, Yunnan Province, individual plant selfing, and each head progeny row selects excellent selfing fruit ear 2-3, point fringe threshing.
(the 13rd generation) summer in 1997: the seed that a upper season gathers in the crops is become head progeny row in Kunming, Yunnan Province kind, pedigree method is adopted to select, each selection fine individual plant selfing 5-10 strain in the head progeny row that performance is excellent, ear selection is carried out again during results, each head progeny row selects excellent selfing fruit ear 2-3, point fringe threshing.
In (the 14th generation) winter in 1997: the seed that a upper season gathers in the crops is become head progeny row in Jinghong City, Yunnan Province kind, continued to adopt pedigree method to select, each selection fine individual plant selfing 5-10 strain in the head progeny row that performance is excellent; Carry out ear selection again during results, each head progeny row selects excellent selfing fruit ear 2-3, point fringe threshing.
In (the 15th generation) summer in 1998: the seed that a upper season gathers in the crops is become head progeny row in Yunnan Province's Kaiyuan City kind, continued to adopt pedigree method to select, each selection fine individual plant selfing 5-10 strain in the head progeny row that performance is excellent; Carry out ear selection again during results, each head progeny row selects excellent selfing fruit ear 2-3, point fringe threshing.
In (the 16th generation) winter in 1998: the seed that a upper season gathers in the crops is become head progeny row in Jinghong City, Yunnan Province kind, continued to adopt pedigree method to select, each selection fine individual plant selfing 5-10 strain in the head progeny row that performance is excellent; Carry out ear selection again during results, each head progeny row selects excellent selfing fruit ear 2-3, point fringe threshing.
In (the 17th generation) summer in 1999: the seed that a upper season gathers in the crops is become head progeny row in Kunming, Yunnan Province kind, continued to adopt pedigree method to select, each selection fine individual plant selfing 5-10 strain in the head progeny row that performance is excellent; Carry out ear selection again during results, each head progeny row selects excellent selfing fruit ear 2-3, point fringe threshing.
In (the 18th generation) winter in 1999: the seed that a upper season gathers in the crops is become head progeny row in Jinghong City, Yunnan Province kind, continued to adopt pedigree method to select, each selection fine individual plant selfing 5-10 strain in the head progeny row that performance is excellent; Carry out ear selection again during results, each head progeny row selects excellent selfing fruit ear 2-3, point fringe threshing.
Pass through the method, finally select a collection of more excellent corn inbred line as YML32, YML46 etc., be bred as a collection of high yield, high-quality, many anti-superior corn kinds by them: No. 1, Yun Rui (YML32 × 478), No. 2, Yun Rui (YML32 × YML17), No. 4, Yun Rui (YML46 × 106), No. 6, Yun Rui (YML46 × YML107), No. 9, Yun Rui (YML46 × YML8711).
The above excellent selfing fruit ear, to show described in excellent selfing fruit ear excellent refers to: (by breeding objective) is disease-resistant, marketing quality good, color and luster is good, head progeny row is neat, ripening rate is high.
Claims (1)
1. utilize a method for Suwan1 unexpected mass incident corn inbred line, the method comprises the following steps:
Use Suwan1 colony, improve in the southern regions of the Yunnan Province 5 generation adaptability, per in generation, is all after individual plant selfing, gather in the crops disease-resistant anti-fall and 50, the fruit ear that fecundity is good, every fringe is planted after taking off the seed mixing of equal number, when the 6th generation, after individual plant selfing, gather in the crops disease-resistant anti-fall and 10, the fruit ear that fecundity is good, divide fringe threshing, plant in the summer of the middle regions of the Yunnan Province subsequently, same year is in the winter planting of the southern regions of the Yunnan Province, continue plantation 5 generation, per in generation, all plants into 10 head progeny rows, individual plant selfing, each head progeny row selects 10, excellent selfing fruit ear, the seed that every fringe takes off equal number is mixed into 50 plantations, when the 12nd generation, plant into 10 head progeny rows, after individual plant selfing, each head progeny row selects excellent selfing fruit ear 2-3, divide fringe threshing, plant in the summer of the middle regions of the Yunnan Province subsequently, same year is in the winter planting of the southern regions of the Yunnan Province, continue plantation 6 generation, per the seed that previous generation gathers in the crops all is become head progeny row by generation, pedigree method is adopted to select, each selection fine individual plant selfing 5-10 strain in the head progeny row that performance is excellent, ear selection is carried out again during results, each head progeny row selects excellent selfing fruit ear 2-3, divide fringe threshing, by the method, namely select excellent corn inbred line.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107787830A (en) * | 2016-08-31 | 2018-03-13 | 辽宁东亚农业发展有限公司 | A kind of method for improving Temperate maize variety and quality and resistance |
| CN108887172B (en) * | 2018-07-16 | 2021-11-12 | 贵州省旱粮研究所 | Method for breeding sterile tolerant inbred line by using corn population Suwan1 |
| CN110115226A (en) * | 2019-05-06 | 2019-08-13 | 贵州省旱粮研究所 | A method of based on corn Suwan germplasm breeding Day neutral self-mating system |
| CN112514791A (en) * | 2020-12-18 | 2021-03-19 | 云南点谷农业科技有限公司 | Breeding method for breeding maize inbred line through high-medium-low altitude cyclic planting |
| CN112640774B (en) * | 2021-01-10 | 2023-04-25 | 贵州省旱粮研究所 | Method for breeding warm corn inbred line by stepwise improvement strategy |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1526273A (en) * | 2003-09-22 | 2004-09-08 | 四川农大正红种业有限责任公司 | Fast and efficvent corn shuttle pedigree breeding process |
| CN102090322A (en) * | 2010-11-29 | 2011-06-15 | 山东冠丰种业科技有限公司 | Seed selection method for new strain of maize inbred line |
| US8524994B1 (en) * | 2009-10-16 | 2013-09-03 | Syngenta Participations Ag | Inbred corn line NPAF4543 |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1526273A (en) * | 2003-09-22 | 2004-09-08 | 四川农大正红种业有限责任公司 | Fast and efficvent corn shuttle pedigree breeding process |
| US8524994B1 (en) * | 2009-10-16 | 2013-09-03 | Syngenta Participations Ag | Inbred corn line NPAF4543 |
| CN102090322A (en) * | 2010-11-29 | 2011-06-15 | 山东冠丰种业科技有限公司 | Seed selection method for new strain of maize inbred line |
Non-Patent Citations (2)
| Title |
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| 云南省玉米育种现状及研究方向;陈洪梅等;《云南省玉米育种现状及研究方向》;20031231;第77-79页，尤其是第77页第1栏第1段至第2栏第1段。 * |
| 杂交玉米研究中的自交系选育技术;杨峻芸等;《玉米科学》;20011231;第9卷(第1期);第46-48页，尤其是第47页第2.3节。 * |
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