CN1115952C - Production method of hybrid rice - Google Patents
Production method of hybrid rice Download PDFInfo
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- CN1115952C CN1115952C CN 98124446 CN98124446A CN1115952C CN 1115952 C CN1115952 C CN 1115952C CN 98124446 CN98124446 CN 98124446 CN 98124446 A CN98124446 A CN 98124446A CN 1115952 C CN1115952 C CN 1115952C
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 21
- 235000009566 rice Nutrition 0.000 title claims abstract description 21
- 240000007594 Oryza sativa Species 0.000 title claims abstract 3
- 241000196324 Embryophyta Species 0.000 claims abstract description 14
- 238000009395 breeding Methods 0.000 claims abstract description 11
- 230000001488 breeding effect Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 8
- 238000010899 nucleation Methods 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 5
- 241000748095 Hymenopappus filifolius Species 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 241000209094 Oryza Species 0.000 description 18
- 238000012423 maintenance Methods 0.000 description 9
- 239000008280 blood Substances 0.000 description 3
- 210000004369 blood Anatomy 0.000 description 3
- 244000118056 Oryza rufipogon Species 0.000 description 1
- 240000008467 Oryza sativa Japonica Group Species 0.000 description 1
- 244000184734 Pyrus japonica Species 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 244000037666 field crops Species 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000009401 outcrossing Methods 0.000 description 1
- 230000010152 pollination Effects 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
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- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
Abstract
A method for producing hybrid rice comprises breeding sterile line with Biaobiao 8A as female parent and Biaobiao 8B as male parent; and (3) producing the hybrid of Biaoyou No. 1 by using Biaoqi 8A as a female parent and using Chenghui 19 as a male parent. The height of the standard 8B is 15-20cm higher than that of the standard 8A plant, and the standard 8B mixed with the standard 8A is removed according to the plant height in the breeding and seed production. The Biaoyou No. 1 leaves are all upright, Biaoyou No. 8A and Biaoyou No. 8B are leaves, false hybrid is removed by means of the label of the leaf in the three-leaf period of Biaoyou No. 1, no leaf cutting is needed in the breeding, and no Jiudi 0 is needed. In the test, the standard You No. 1 increases the yield by 5.3 percent compared with the Shanyou 63. The standard 8A has good stigma exsertion, and the seed production rate is 50-100 Kg/mu more than that of Zhenshan 97A and gang 46A.
Description
The invention belongs to the rice heterosis utilization field, be specifically related to the seed selection and the seed production method thereof of the new combination of a kind of hybrid rice.
Hybrid rice is widely planted at Chinese countryside, and a lot of technical problems are anxious must to be solved but still exist.The hybrid rice production of hybrid seeds with low content of technology, the breeding cost height, the field operation is very numerous and diverse, need great amount of manpower and material resources, guarantee that seed purity is very difficult simultaneously, only between heading flowering period, the field recognizes that carefully could discern seed farm sneaks into maintenance line in the male sterile line, and at this moment pollen spreads, F
1Unavoidably sneak into male sterile line and maintenance line in generation, usually cause and drop in production over a large area, cause enormous economic loss for peasant and seeds company, so existing hybrid rice seeding technique can't guarantee the production of high-purity seed, these all are to hinder the key factor that hybrid rice further develops.The risk in seed market and fragility are to cause that because of the high and difficult assurance high-purity seed quality of seed production cost seeds company and peasant household all are difficult to bear so huge economic pressures and risk pressure to a great extent.Therefore, seed selection and research are suitable for improving hybrid seed yield, simplify seeding technique, and reducing breeding cost and improving seed purity effectively is a great research topic.
The objective of the invention is to solve the problems referred to above in the hybrid rice production process, a kind of high-yield hybrid new rice variety and simple seed production method thereof are provided, reduce the seed production cost effectively and improve seed purity, guarantee seed quality.
The present invention is achieved in that
The production method of a kind of hybrid rice is characterized in that male sterile line is the high 15-20cm of plant than recovering, and removes the recovery system of sneaking into male sterile line according to plant height in breeding and seed farm, guarantees seed purity; All upright according to the crossbreed blade, male sterile line and recovery are that blade drapes over one's shoulders leaf, remove pseudostationary with draping over one's shoulders the leaf mark during hybrid seeding.
Mark 8B removes the mark 8B that sneak into mark 8A according to plant height than the high 15-20cm of mark 8A plant in breeding and seed farm, guarantee seed purity.
It is all upright to mark excellent No. 1 blade, and mark 8A and mark 8B be for draping over one's shoulders leaf, mark excellent No. 1 tri-leaf period with draping over one's shoulders leaf mark removal pseudostationary.
Mark 8A and mark 8B are and drape over one's shoulders leaf system, and the fringe layer does not cut leaf when the breeding and the production of hybrid seeds on the leaf layer, do not spray GA.
Advantage of the present invention and good effect are as follows:
High yield, stable yields, adaptability mark by force excellent No. 1 plant experimentally inside and outside the province with variety comparative test in, generally than Shanyou 63 volume increase 5.3%, and fertilizer resistance anti-lodging, yield stability is good, has bigger application prospect.
2. it is simple to mark excellent No. 1 seeding technique
Because male sterile line mark 8A blade is hung down loosely downwards, heading property is good, and bag neck degree is light, generally has only 1-2cm, and heading back fringe layer very is beneficial to different friendship pollination on the leaf layer.Therefore, needn't cut leaf during the production of hybrid seeds, needn't spray 920, only this can save manufacturing cost more than 150 yuan for every mu.
3. be easy to impurity elimination and keep the high-purity seed
Because maintenance line mark 8B and male sterile line mark 8A have the plant height of 15-20cm poor, can rely on this mark property all to remove the maintenance line of sneaking in the male sterile line in breeding and seed farm, guaranteed the purity and the seed production purity of male-sterile seed effectively.Because the highly purified leaf male sterile line that drapes over one's shoulders has been arranged, when recovering to be the production of hybrid seeds with upright leaf, crossbreed generation blade is all upright, and the maintenance line and the male sterile line of sneaking into wherein drape over one's shoulders leaf, be marked at after planting 20 days with draping over one's shoulders leaf, can accurately discern and remove pseudostationary tri-leaf period, EARLY RECOGNITION and remove the heavy economic losses can make peasant household and seeds company avoid pseudostationary and to cause.
4. mark 8A male sterile line stigma appearing is good, the outcrossing seed-setting rate height, and the comparable existing Zhenshan 97a of the general per mu yield of the production of hybrid seeds and many 50-100Kg/ of Gang No.46A production of hybrid seeds mu, every mu increases income 200-400 unit.
Narrate embodiments of the invention below:
1. leaf marking sterile series " mark 8A " is draped over one's shoulders in seed selection
Zhenshan 97B with drape over one's shoulders leaf system RGS
20, recessive tallness is IR
50Eui is successively hybridized to such an extent that recessive tallness drapes over one's shoulders the leaf maintenance line, hybridizes to such an extent that weak recessive tallness drapes over one's shoulders the leaf maintenance line with hilllock 46B again, must drape over one's shoulders a little less than the leaf recessive tallness male sterile line-mark 8A with Gang No.46A test cross and continuous backcross again and corresponding maintenance line one is marked 8B.Mark 8A is than the low 15-20cm of mark 8B plant height.
2, recovering is the seed selection of " becoming extensive 19 ":
Based on tropical seed rice resource, select for use and merged common cultivated rice and two seed rice blood relationships of India O.nivara, infiltrated tropical japonica rice CPSLO and how anti-germplasm TKm
6The how anti-kind IR of high-quality Deng the parent of indica and japonica subspecies more than 30 blood relationship
50Be female parent; With the kind IR that contains the high yield blood relationship
8, high-combining ability parent IR
24, Gui 630 eurytopicity to recover be bright extensive 63 to hybridize F for male parent
2Generation select fine individual plant again with bright extensive 63 hybridization, breed new restorer line and become extensive 19 through seed selection is stable.
3. " mark excellent No. 1 " seed selection of the new combination of hybrid rice
Utilization is draped over one's shoulders the weak recessive tallness male sterile line mark of leaf 8A and is recovered to be tied to form extensive 19 combos with upright leaf, through test cross, combination yield trials and production demonstration etc., bred " marking excellent No. 1 " hybrid rice of upright leaf, it is suitable with existing promotion mix Shanyou 63 that this makes up the ripe phase, production ratio Shan sorrow 63 increases 5.3%, is suitable for the medium rice district plantation of China south.
4. mark excellent No. 1 seeding technique:
Compare with existing hybrid rice, it is very simple to mark excellent No. 1 seeding technique, marks excellent No. 1 producing method for seed and be not cut leaf, do not execute 920, and the seed farm seeding stage is removed the assorted strain of other upright leaf of sneaking in the male sterile line with draping over one's shoulders the leaf mark property in male sterile line colony; Initial bloom stage is dialled in male sterile line colony and is removed the maintenance line (poor with plant height) that mixes the people.Other measure as sow, plant, field management such as fertilizing, watering, pest control treatment with the land for growing field crops produce identical.Mark excellent No. 1 production of hybrid seeds and do not cutting leaf, do not spray under 920 the situation, can also obtain the output of 250-300Kg/ mu, increase 50-100Kg, amplification 25-50% than Zhenshan 97a and Gang No.46A series of combination.
5. mark excellent No. 1 applying
No. 1, sorrow of mark can be at medium rice district, China south popularizing planting because of high yield, stable yields, good stress resistance, and all Shanyou 63 plantations area all can be planted, its culture technique with existing make up similar.
Claims (2)
1, the production method of a kind of hybrid rice is characterized in that male sterile line is the high 15-20cm of plant than recovering, and removes the recovery system of sneaking into male sterile line according to plant height in breeding and seed farm, guarantees seed purity; All upright according to the crossbreed blade, male sterile line and recovery are that blade drapes over one's shoulders leaf, remove pseudostationary with draping over one's shoulders the leaf mark during hybrid seeding.
2, method according to claim 1, it is characterized in that male sterile line and recovery be the fringe layer on the leaf layer, breeding and do not cut leaf during the production of hybrid seeds does not spray 920.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98124446 CN1115952C (en) | 1998-11-05 | 1998-11-05 | Production method of hybrid rice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98124446 CN1115952C (en) | 1998-11-05 | 1998-11-05 | Production method of hybrid rice |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1218615A CN1218615A (en) | 1999-06-09 |
| CN1115952C true CN1115952C (en) | 2003-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98124446 Expired - Fee Related CN1115952C (en) | 1998-11-05 | 1998-11-05 | Production method of hybrid rice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1115952C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108243949B (en) * | 2018-03-16 | 2021-06-04 | 安徽省农业科学院水稻研究所 | Breeding method of light and simple type temperature-sensitive genic male sterile line |
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1998
- 1998-11-05 CN CN 98124446 patent/CN1115952C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1218615A (en) | 1999-06-09 |
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Co-applicant after: Sichuan edge Seed Industry Co., Ltd. Co-applicant before: Sichuan high quality grain and oil science and Technology Development Center |
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| COR | Change of bibliographic data |
Free format text: CORRECT: CO-APPLICANT; FROM: SICHUAN QUALITY GRAIN AND OIL SCIENCE + TECHNOLOGY DEVELOPING CENTER TO: SICHUAN SAIDE SEEDS CO.,LTD. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |