CN104521739A - Breeding method of hybrid corn seeds - Google Patents
Breeding method of hybrid corn seeds Download PDFInfo
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- CN104521739A CN104521739A CN201410768239.3A CN201410768239A CN104521739A CN 104521739 A CN104521739 A CN 104521739A CN 201410768239 A CN201410768239 A CN 201410768239A CN 104521739 A CN104521739 A CN 104521739A
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Abstract
The invention relates to a breeding method of hybrid corn seeds. The breeding method comprises the following steps: performing blood relationship and breeding process of female parents 22-2, namely building a basic material with S2*22, and then breeding by selecting plants and selfing for continuous seven generations, wherein S2 and 22 belong to a common selfing line of a group P; performing blood relationship and breeding process of male parents R177, namely building a basic material with a selfing line Dan340*Ye107 in the second annual summer, and then breeding by selecting plants and selfing for continuous seven generations, wherein the Dan340 belongs to a brigade material, the ye107 belongs to the common selfing line, and the ratio of parental lines is 1 to 5; firstly, seedling the male parents; and then seeding the female parents when the male parents begin to germinate, wherein the quantity of the female parents is 500-4,000, and the quantity of the male parents is 800. By using the breeding method, the bred hybrid corn seeds have the characteristics of high disease resistance and lodging resistance, high yield and good quality.
Description
Technical field
The present invention relates to is cultivating crop seeds field, specifically a kind of hybrid corn seed selection.
Background technology
Generally corn hybrid seed is used in real agricultural seed field, but because corn hybrid seed provenance is different, and the hereditary capacity produced is different, cause no matter from output, still be all not quite similar qualitatively and in Growth Traits, therefore affect the seed output and quality of first-filial generation.
Summary of the invention
Technical problem to be solved by this invention overcomes the deficiencies in the prior art, and provide a kind of hybrid corn seed selection, the technical solution adopted for the present invention to solve the technical problems is:
One), the blood relationship of maternal 22-2 and seed selection pass through: with S2 × 22 constructional base material, and be bred as by the selfing of selecting good strains in the field for seed of continuous 7 generations, wherein S2 and 22 all belongs to the public inbred line of P group, and it specifically passes through and is:
A, First Year are aestivated and season are obtained S0 with S2 × 22 constructional base material, the first year winter (Hainan) roguing, after corn maturation results are pollinated in selfing, obtain S1.
B, Second Year are aestivated season roguing, after corn maturation results are pollinated in selfing S2
C, the second year winter (Hainan) roguing, obtain S3 after corn maturation results are pollinated in selfing,
D, the 3rd year roguing in summer, obtain S4 after corn maturation results are pollinated in selfing,
E, the 3rd year winter (Hainan) roguing, obtain S5 after corn maturation results are pollinated in selfing
F, the 4th year roguing in summer, after corn maturation results are pollinated in selfing, obtain S6, the performance of plant panicled characters is neat, and economical character is neat, stabilization characteristics of genetics.
Two), the blood relationship of male parent R177 and seed selection pass through: Second Year aestivates season with inbred line pellet 340 × tuck in 107 constructional base materials, and be bred as by the selfing of selecting good strains in the field for seed of continuous 7 generations, red 340 belong to trip's based materials, tuck in 107 and all belong to public inbred line, and it is specifically through being:
A), Second Year aestivate with red 340 × tuck in 107 constructional base materials to obtain S0, the second winter in year (Hainan) selected good strains in the field for seed, after corn maturation results are pollinated in selfing S1.
B), within the 3rd year, aestivate and select good strains in the field for seed, after corn maturation results are pollinated in selfing, obtain S2.
C), selected good strains in the field for seed in the 3rd winter in year (Hainan), after corn maturation results are pollinated in selfing, obtain S3.
D), select good strains in the field for seed for the 4th summer in year, being pollinated after corn maturation is gathered in the crops until selfing obtains S4.
E), selected good strains in the field for seed in the 4th winter in year (Hainan), after corn maturation results are pollinated in selfing, obtain S5.
F), select good strains in the field for seed for the 5th summer in year, after corn maturation results are pollinated in selfing, obtain S6, plant performance is more neat.
G), winter (Hainan) the tree characteristics performance of the 5th year is neat, selects good strains in the field for seed to obtain economical character, the S7 of stabilization characteristics of genetics after corn maturation results are pollinated in selfing.
Seeding technique main points: 1), above earth fertility is good in selection of land requirement, and irrigation and drainage are convenient, and isolation condition is good, and photo-thermal is sufficient, and the masses have the level land production of hybrid seeds of production of hybrid seeds experience; 2), parental 1: 5 is advisable; 3), the wrong phase, the first nursery of male parent, male parent starts to emerge and broadcasts female parent; 4), density, general maternal 3500---4000 strain, about male parent 800 strain; 5), strict roguing, in time thoroughly emasculation, stop selfing; 6), timely results prevent from going rotten, and do the anti-assorted guarantor ground after regaining well.
(2) the numerous strain technical essential of parent: (1), selection fertile soil, the plot breeding that isolation condition is good; (2), every mu stay seedling 3500---4000 strain, April early and middle ten days sowing be advisable; (3), strict roguing; (4) the anti-assorted guarantor ground after gathering in the crops, is done well.
The invention has the beneficial effects as follows, the hybrid corn seed that the present invention cultivates, have disease resistance strong, resistant to lodging, output is high, the feature of quality better.
Embodiment
One), the blood relationship of maternal 22-2 and seed selection pass through: with S2 × 22 constructional base material, and be bred as by the selfing of selecting good strains in the field for seed of continuous 7 generations, wherein S2 and 22 all belongs to the public inbred line of P group, and it specifically passes through and is:
A, First Year are aestivated and season are obtained S0 with S2 × 22 constructional base material, the first year winter (Hainan) roguing, after corn maturation results are pollinated in selfing, obtain S1.
B, Second Year are aestivated season roguing, after corn maturation results are pollinated in selfing S2
C, the second year winter (Hainan) roguing, obtain S3 after corn maturation results are pollinated in selfing,
D, the 3rd year roguing in summer, obtain S4 after corn maturation results are pollinated in selfing,
E, the 3rd year winter (Hainan) roguing, obtain S5 after corn maturation results are pollinated in selfing
F, the 4th year roguing in summer, after corn maturation results are pollinated in selfing, obtain S6, the performance of plant panicled characters is neat, and economical character is neat, stabilization characteristics of genetics.
Two), the blood relationship of male parent R177 and seed selection pass through: Second Year aestivates season with inbred line pellet 340 × tuck in 107 constructional base materials, and be bred as by the selfing of selecting good strains in the field for seed of continuous 7 generations, red 340 belong to trip's based materials, tuck in 107 and all belong to public inbred line, and it is specifically through being:
A), Second Year aestivate with red 340 × tuck in 107 constructional base materials to obtain S0, the second winter in year (Hainan) selected good strains in the field for seed, after corn maturation results are pollinated in selfing S1.
B), within the 3rd year, aestivate and select good strains in the field for seed, after corn maturation results are pollinated in selfing, obtain S2.
C), selected good strains in the field for seed in the 3rd winter in year (Hainan), after corn maturation results are pollinated in selfing, obtain S3.
D), select good strains in the field for seed for the 4th summer in year, being pollinated after corn maturation is gathered in the crops until selfing obtains S4.
E), selected good strains in the field for seed in the 4th winter in year (Hainan), after corn maturation results are pollinated in selfing, obtain S5.
F), select good strains in the field for seed for the 5th summer in year, after corn maturation results are pollinated in selfing, obtain S6, plant performance is more neat.
G), winter (Hainan) the tree characteristics performance of the 5th year is neat, selects good strains in the field for seed to obtain economical character, the S7 of stabilization characteristics of genetics after corn maturation results are pollinated in selfing.
Hybrid corn seed planting effect is tested: maternal 22-2, coleoptile lilac, the first leaf leaf sheath lilac, and strain half is compact; strain total leaf number 19, full-bloom stage tassel is concentrated, and branch 6-10, branch main shaft angle is less; tassel grain husk shell is green, and flower pesticide is yellow, and filigree is red, fruit ear cartridge type; seed yellow is partially hard, cob white, 130 days breeding times, plant height 181cm; Ear height 70-80cm, spike length 17cm, the thick 3.8cm of fringe, tassel row number 16 row; several 35 of row grain, thousand kernel weight 315 grams, seed-producing rate 82%.Male parent R177 coleoptile purple, the first leaf leaf sheath purple, seedling growth is medium, and strain plant type is micro-hangs down loosely; the strain number of blade 20, straw staygreen, stem stalk becomes zig-zag type, branch and main shaft angle larger; tassel grain husk shell purple, filigree light red, fruit ear is tapered, the yellow horse tooth partially of seed; 141 days breeding times, plant height 185cm, the high 110cm of fringe grain; spike length 18cm, the thick 3.5cm of fringe, tassel row number 12-14 is capable; several about 36 of row grain, thousand kernel weight 320 grams, seed-producing rate 85%.
Cultural technique: generally purebred 4000 strains.Also can corn, the two cover plantation of potato.Adapt to the plantation of our province 1100-2000 rice altitude ranges, be advisable to early April sowing with late March.
(1) seeding technique main points:
1), selection of land requires that soil fertility is good, and irrigation and drainage are convenient, and isolation condition is good, and photo-thermal is sufficient, and the masses have the level land production of hybrid seeds of production of hybrid seeds experience.
2), parental 1: 5 is advisable.
3), the wrong phase, the first nursery of male parent, male parent starts to emerge and broadcasts female parent.
4), density, general maternal 3500---4000 strain, about male parent 800 strain.
5), strict roguing, in time thoroughly emasculation, stop selfing.
6), timely results prevent from going rotten, and do the anti-assorted guarantor ground after regaining well.
(2) the numerous strain technical essential of parent:
(1), in selection earth is fertile, the plot breeding that isolation condition is good.
(2), every mu stay seedling 3500---4000 strain, April early and middle ten days sowing be advisable.
(3), strict roguing.
(4) the anti-assorted guarantor ground after gathering in the crops, is done well.
Embodiment recited above is only be described the preferred embodiment of the present invention; not the spirit and scope of the present invention are limited; under the prerequisite not departing from design concept of the present invention; the various modification that in this area, common engineers and technicians make technical scheme of the present invention and improvement; protection scope of the present invention all should be fallen into; the technology contents of request protection of the present invention, all records in detail in the claims.
Claims (2)
1. a hybrid corn seed selection, the selection of corn seed of the present invention:
One), the blood relationship of maternal 22-2 and seed selection pass through: with S2 × 22 constructional base material, and be bred as by the selfing of selecting good strains in the field for seed of continuous 7 generations, wherein S2 and 22 all belongs to the public inbred line of P group, and it specifically passes through and is:
A, First Year are aestivated and season are obtained S0 with S2 × 22 constructional base material, the first year winter (Hainan) roguing, after corn maturation results are pollinated in selfing, obtain S1.
B, Second Year are aestivated season roguing, after corn maturation results are pollinated in selfing S2
C, the second year winter (Hainan) roguing, obtain S3 after corn maturation results are pollinated in selfing,
D, the 3rd year roguing in summer, obtain S4 after corn maturation results are pollinated in selfing,
E, the 3rd year winter (Hainan) roguing, obtain S5 after corn maturation results are pollinated in selfing
F, the 4th year roguing in summer, after corn maturation results are pollinated in selfing, obtain S6, the performance of plant panicled characters is neat, and economical character is neat, stabilization characteristics of genetics.
Two), the blood relationship of male parent R177 and seed selection pass through: Second Year aestivates season with inbred line pellet 340 × tuck in 107 constructional base materials, and be bred as by the selfing of selecting good strains in the field for seed of continuous 7 generations, red 340 belong to trip's based materials, tuck in 107 and all belong to public inbred line, and it is specifically through being:
A), Second Year aestivate with red 340 × tuck in 107 constructional base materials to obtain S0, the second winter in year (Hainan) selected good strains in the field for seed, after corn maturation results are pollinated in selfing S1.
B), within the 3rd year, aestivate and select good strains in the field for seed, after corn maturation results are pollinated in selfing, obtain S2.
C), selected good strains in the field for seed in the 3rd winter in year (Hainan), after corn maturation results are pollinated in selfing, obtain S3.
D), select good strains in the field for seed for the 4th summer in year, being pollinated after corn maturation is gathered in the crops until selfing obtains S4.
E), selected good strains in the field for seed in the 4th winter in year (Hainan), after corn maturation results are pollinated in selfing, obtain S5.
F), select good strains in the field for seed for the 5th summer in year, being pollinated after corn maturation is gathered in the crops until selfing obtains S6.
G), winter (Hainan) the tree characteristics performance of the 5th year is neat, selects good strains in the field for seed to obtain economical character, the S7 of stabilization characteristics of genetics after corn maturation results are pollinated in selfing.
2. hybrid corn seed selection according to claim 1, is characterized in that: parental 1: 5 is advisable; The first nursery of male parent, male parent starts to emerge and broadcasts female parent, maternal 3500---4000 strain, male parent 800 strain.
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| CN201410768239.3A CN104521739A (en) | 2014-12-04 | 2014-12-04 | Breeding method of hybrid corn seeds |
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| CN201410768239.3A CN104521739A (en) | 2014-12-04 | 2014-12-04 | Breeding method of hybrid corn seeds |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106577264A (en) * | 2016-12-21 | 2017-04-26 | 漯河市农业科学院 | Corn inbred material homozygosis breeding method for Huang-Huai-Hai areas |
| CN107455254B (en) * | 2017-08-10 | 2019-01-11 | 北京市农林科学院 | Corn selects system, method with the polymerization of group's major clique |
| CN109197578A (en) * | 2018-11-22 | 2019-01-15 | 山东省农业科学院玉米研究所（山东省农业科学院玉米工程技术研究中心） | A kind of selection of P crowds of corn inbred line Lx286 |
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| CN1489897A (en) * | 2003-07-29 | 2004-04-21 | 赵劲霖 | Producing method for seeds of corn coeno-species |
| CN102090332A (en) * | 2010-11-10 | 2011-06-15 | 天津滨海国际花卉科技园区股份有限公司 | Thin layer culture method of tulips |
| CN102318553A (en) * | 2011-08-22 | 2012-01-18 | 山西省原平市双惠种业有限公司 | Breeding method of hybrid corn |
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Patent Citations (4)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106577264A (en) * | 2016-12-21 | 2017-04-26 | 漯河市农业科学院 | Corn inbred material homozygosis breeding method for Huang-Huai-Hai areas |
| CN107455254B (en) * | 2017-08-10 | 2019-01-11 | 北京市农林科学院 | Corn selects system, method with the polymerization of group's major clique |
| CN109197578A (en) * | 2018-11-22 | 2019-01-15 | 山东省农业科学院玉米研究所（山东省农业科学院玉米工程技术研究中心） | A kind of selection of P crowds of corn inbred line Lx286 |
| CN109197578B (en) * | 2018-11-22 | 2021-11-05 | 山东省农业科学院玉米研究所（山东省农业科学院玉米工程技术研究中心） | Breeding method of P-group maize inbred line Lx286 |
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Application publication date: 20150422 |