CN1110246C - Method for breeding recovery line of trilinear super hybridized rice - Google Patents
Method for breeding recovery line of trilinear super hybridized rice Download PDFInfo
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- CN1110246C CN1110246C CN 00131189 CN00131189A CN1110246C CN 1110246 C CN1110246 C CN 1110246C CN 00131189 CN00131189 CN 00131189 CN 00131189 A CN00131189 A CN 00131189A CN 1110246 C CN1110246 C CN 1110246C
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Abstract
The present invention discloses a method for selecting the restoring line of three-line super hybrid rice, wherein the restoring line is a novel restoring line is bred from convergent hybridization with the utilization of the genetic diversities of the different restoring sources of the conventional variety of the super rice from International Rice Research Institute and Java rice BP98, and a plurality of good restoring lines in China; the novel restoring line has the advantages of stability, large ear, high quality of granules, wide restoring range, strong compatibility, high quality and good resistance. With the utilization of the restoring line for matching with the existing sterile line, the production of the hybrid rice can be considerably improved, the restoring line has large latent capacity in increasing yield, and simultaneously, the present invention has great significance in the theory and the practice of the hybrid rice.
Description
Affiliated technical field
The present invention relates to a kind of utilize international paddy rice the conventional super hybridization rice kind source of different recoveries from java rice BP98 and the hereditary difference of domestic a plurality of Elite restorer lines, through behind the convergent cross, breed stable, have big fringe, many, recover wide, compatibility strong, product are of fine quality, the new restorer line of better resistance.Through strong, resistant to lodging, the every fringe average particle of its hybrid of test cross combo performance tillering ability number at 350-450 grain, ripening rate more than 85%.This selection belongs to the Plant genetics technical field.
Background technology
China hybrid rice is applied existing two more than ten years, and for hybrid rice is stepped to a new level, each Rice Production province is all in the apolegamy of carrying out " ternary hybrid rice ", " two is hybrid rice " and " super hybridization rice " new combination in recent years.And the improvement of sterile line is only limited to the improvement of quality and strain shape, is difficult to enlarge genetic diversity; And the seed selection of restorer and improvement can enlarge genetic diversity by the method for convergent cross, thereby can bring into play fully the heterotic effect of hybrid rice.At present, the restorer of applying in production belongs to single cross and double cross seed selection basically, the restorer that rare convergent cross gets.The production of hybrid rice will attain a new height, and good restorer is the basic guarantee of a key.Conventional super hybridization rice can not be directly used in hybrid rice as restorer, because it lacks the recovery gene, and has the too poor and not strong shortcoming of tillering of the leaf attitude of strain.The recovery system of simultaneously general hybrid rice, yield potential is just paced up and down on same level.Therefore, seek the good super hybridization rice restorer of seed selection and utilize its super hybridization rice characteristic and sterile line combo, can be on the basis that has sterile line now, the production of hybrid rice is pushed away further greatly, have great yield potential.
Summary of the invention
Be the technical measures that realize that above-mentioned purpose of the present invention is taked:
1. utilize manual detasseling method, with international paddy rice conventional super hybridization rice artificial emasculation after, award the pollen of BP98, the hybridization combo obtains hybridizing F
1In generation, it shows as neat and consistent.
2. utilize manual detasseling method, with hybridization F obtained above
1In generation, artificial emasculation awards the Lu extensive No. 6 pollen, finishes three mating groups and obtains three friendship F
1In generation, it shows as separation.
3. utilize manual detasseling method, hand over F with above-mentioned three
1In generation, selected the fine individual plant artificial emasculation, awards the pollen of Mianhui725, finishes four mating groups, obtains four and hand over F
1, it shows as separation.
4. utilize manual detasseling method, hand over F with above-mentioned four
1In generation, selected the fine individual plant artificial emasculation, awards extensive 88 pollen up to ten thousand, finishes the convergent cross combo, obtains F
1, add then generation to F
2, by artificial a large amount of roguings, add generation, be recycled to for the 6th generation, it is strong to breed tillering ability, many of big fringes, colory super hybridization rice recovers strain.
Concrete seed selection flow process and trait expression situation are as follows:
Super hybridization rice/BP98 artificial emasculation, hybridize.
↓
F
1The extensive No. 6 agronomy sex expression neat and consistent in // Lu, artificial emasculation carries out three mating groups
↓
F
1The sex expression of ///Mianhui725 agronomy separates, and preferentially good individual plant artificial emasculation carries out four mating groups
↓
F
1// // ten thousand extensive 88 agronomy sex expressions separate, and preferentially good individual plant artificial emasculation carries out five mating groups
↓
F
1
↓?
F
2Artificial selection, 2000 individual plants
↓?
F
3Bad plant is eliminated in artificial selection
↓?
F
4Bad plant is eliminated in artificial selection, selects good plant and sterile line test cross, combo
↓?
F
5Artificial selection, contrast F
4In generation, be measured combination, the superseded not strong plant of restoring force,
↓ carries out repetition measurement to elected plant
F
6The combination of contrast repetition measurement, preferentially seed selection individual plant, and expansion colony, restorer seed selection
Restorer is finished
The present invention has proposed to utilize the convergent cross method first, creates a kind ofly to have many recoveries source, super large fringe, solid height, product super hybridization rice of fine quality and recover the selection of system, the remarkable result with the following aspects:
1. because resulting restored cording has two kinds of different recovery sources, its hybrid F
1Can extensive property obviously recover to fasten than source, general all more than 85%.
2. utilizing super hybridization rice to recover is the production of hybrid seeds, because of its big panicle many grains per panicle, and the pollen abundance, the seed farm piece can enlarge the capable ratio of recovery system and male sterile line, improves hybrid seed yield.
3. super hybridization rice recovers the hybrid generation of system, has big panicle many grains per panicle, tillers strong, anti-ly to fall, disease-resistant, superior quality characteristics, more than the general per unit area yield 900kg.
4. method maturation of the present invention, reliable and stable, extensively utilize this method will improve the Rice Production level, further promote the healthy stable development that hybrid rice produces.
Embodiment
The BP98 that selects super hybridization rice that international paddy rice breeds and area, Java again with domestic 3 kinds of Elite restorer lines through convergent cross, hand over F from five
2Select more than 2000 individual plant in the large group, through systematic breeding and test cross 9 the stable super hybridization rice restorers of seed selection typing of reestablishing diplomatic relations, now selfing was isozygotied to the 9th generation., utilize military golden 4A (zebra leaf male sterile line) and super hybridization rice combo that Wuhan University breeds, bred super high yields such as Wu Jin 298, Wu Jin p88, high-quality, anti-fall, disease-resistant new combination several, now entered the combination variety comparative test stage.
Through preliminary test, the super hybridized rice combination shows as the plant type compactness, blade is straight and upright, tillering ability is strong, big panicle many grains per panicle, average every fringe grain husk are spent several about 400, ripening rate is more than 85%, dry granular weighs 26 grams, and grain is elongated, and exterior quality and food flavor quality are all better, about general per mu yield 900kg, can directly apply to large tracts of land production.
Claims (1)
1. a breeding rice super hybridized rice recovers the method for system, it is characterized in that this selection comprises the steps:
A. utilize manual detasseling method, behind conventional super hybridization rice kind artificial emasculation, award the Varieties in Pollen Morphology in the different recoveries of java rice BP98 source, the hybridization combo obtains hybridizing F
1In generation, use single cross F
1Three friendships are carried out extensive No. 6 in artificial emasculation and restorer Lu, obtain three and hand over F
1After, carry out four with Mianhui725 and ten thousand extensive 88 again and hand over and five friendships, finish convergent cross;
B. from convergent cross offspring F
22000 parts of middle select target individual plants carry out systematic breeding, educate through Nan Fanbei, add 6 generations of Dai Zhidi, obtain stablizing the strain of agronomy unanimity;
C. when seed selection proceeded to for the 4th generation, utilize dissimilar sterile lines extensively and restorer test cross combo, screen strong excellent restorer, the advantage of eliminating is bad, recovers halfway plant;
D. when seed selection proceeded to for the 5th generation, the more excellent recovery material of performance in previous generation's test cross is carried out repetition measurement;
E. in the 6th generation, the contrast previous generation makes up the performance situation, and final election meets the restorer of breeding objective, and carries out the large group combo, and row enters kind than producing test, and the agronomy of restorer finalizes the design almost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00131189 CN1110246C (en) | 2000-11-30 | 2000-11-30 | Method for breeding recovery line of trilinear super hybridized rice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00131189 CN1110246C (en) | 2000-11-30 | 2000-11-30 | Method for breeding recovery line of trilinear super hybridized rice |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1296736A CN1296736A (en) | 2001-05-30 |
| CN1110246C true CN1110246C (en) | 2003-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00131189 Expired - Fee Related CN1110246C (en) | 2000-11-30 | 2000-11-30 | Method for breeding recovery line of trilinear super hybridized rice |
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| Country | Link |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100445396C (en) * | 2005-11-21 | 2008-12-24 | 安徽省农业科学院水稻研究所 | Molecular marking supplementary breeding method for multi-purpose restoring series of three-series hybrid rice |
| CN100426950C (en) * | 2006-05-31 | 2008-10-22 | 浙江理工大学 | Method for quick cultivating 'three line' hybrid rice restoring line using molecule mark |
| CN101116420B (en) * | 2007-09-27 | 2010-04-14 | 武汉大学 | Fire-resistant lodging-resistant red lotus type cytoplasmic male sterile series breeding method |
| CN103168680B (en) * | 2013-04-15 | 2014-11-26 | 四川得月科技种业有限公司 | Method for rapidly and selectively breeding restoring line of hybrid rice |
| CN103329795A (en) * | 2013-07-11 | 2013-10-02 | 江西省农业科学院水稻研究所 | General method for rapidly obtaining novel cytoplasm male sterility restoration source of rice |
-
2000
- 2000-11-30 CN CN 00131189 patent/CN1110246C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1296736A (en) | 2001-05-30 |
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