CN105284589A - Cultivation method for lodging-resistant rice variety - Google Patents
Cultivation method for lodging-resistant rice variety Download PDFInfo
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- CN105284589A CN105284589A CN201410276171.7A CN201410276171A CN105284589A CN 105284589 A CN105284589 A CN 105284589A CN 201410276171 A CN201410276171 A CN 201410276171A CN 105284589 A CN105284589 A CN 105284589A
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Abstract
The invention provides a cultivation method for a lodging-resistant rice variety, belonging to selective cultivation of novel plant varieties. The method comprises the following steps: firstly setting lodging-causing environmental stress according to a nitrogen-application level and planting density of rice in local, and selecting out lodging-resistant resources; subjecting the lodging-resistant resources and other materials with excellent comprehensive characters to artificial hybridization, planting F2 to F4-generation populations in the lodging-causing environmental stress according to a pedigree selective cultivation method, and repeatedly selecting a single plant or a plant line which is non-lodging in a maturity stage; identifying other important characters of a lodging-resistant plant line with F5-generation, wherein it is needed to identify retention capability for cultivation of a sterile line and identify restoring capability for cultivation of a restoring line; subjecting the above-mentioned materials to generation-adding stabilization so as to cultivate a lodging-resistant conventional variety, subjecting the plant line with the retention capability and sterile cytoplasm to backcross warranty so as to cultivate a lodging-resistant sterile line, and subjecting the plant line with restoring capability to generation-adding stabilization so as to cultivate a lodging-resistant restoring line; and subjecting the lodging-resistant sterile line and the lodging-resistant restoring line to preparing a hybrid combination so as to cultivate a lodging-resistant hybrid combination. The cultivation method provided by the invention can guarantee strong lodging resistance of cultivated rice variety and identify lodging resistance of the cultivated rice variety, so lodging loss of rice production is reduced.
Description
Technical field
The invention belongs to plant variety seed selection, particularly rice varieties resistant to lodging is cultivated.
Background technology
High yield and lodging are current Rice Super-yield Breeding and upper a pair conspicuous contradiction of cultivation.Improving biological yield is the basis of Rice Super-yield Breeding, and the important measures of current high-yield culturing are also improve biological yield by increasing fertilizing amount, and improve biological yield plant height must be caused to increase, in move in the heart, the increased risk of lodging.Lodging can cause Seed-Setting Percentage in Rice decline, thousand kernel weight reduces, rice qualitative change is bad, output declines to a great extent; Lodging is unfavorable for mechanical harvesting, and not only field grain osses increases, and harvesting cost significantly rises.Therefore, the important goal that the anti-fall property of rice varieties is rice breeding is always improved.
The lodging resistance of rice varieties is determined by the strain Leaf pattern of kind and inherent physiological structure, and closely related with the planting environment factor.The lodging risk of same kind sharply increases with the increasing of planting density and the raising of nitrogen amount applied.The anti-fall breeding of current paddy rice mainly relies on the sporadic lodging event in the personal experience of breed breeding people and Breeding Process to carry out the choice of material, lack the anti-fall breeding method of stability and high efficiency, cause the anti-fall property of the rice varieties of incubation undesirable, particularly by increasing plant height, improving nitrogen fertilizer amount and Planting Densities, there is serious high yield and the contradiction of lodging in the super hybridization rice kind establishing high yield basis with larger biological yield, causes a large amount of super hybridization rice kind to be difficult to play due high yield potential aborning especially.
Summary of the invention
Object of the present invention is exactly the defect existed for prior art, plan provides a kind of rice varieties breeding method resistant to lodging, make breeder in rice breeding process, apply to obtain the high nitrogen of limit biological yield according to the target output of seed selection, high density causes down environment stress, carry out continuing to select to the different generations of hybridization transformation, cultivate anti-fall rice varieties, improve the anti-fall breeding efficiency of paddy rice, carry out lodging resistance qualification to improved variety, effectively prevention large area produces lodging loss.
For realizing the object of the invention, the technical scheme taked is as follows.
A kind of rice varieties breeding method resistant to lodging, is characterized in that, be made up of following steps:
1, cause the setting of falling environment stress: on the normal amount of nitrogen and planting density basis of local Rice Production, nitrogen amount applied is improved 60%, density increases by 50%, and the biological yield at heading stage improves 30%.Fertilization mode is: base fertilizer 50%, jointing fertilizer 50%, and base fertilizer is joined by 1: 0.5: 0.6 and executed phosphorus and potash fertilizer, guarantees normal plants.
2, anti-fall Screening germplasm: plant the resource material that other proterties meets breeding demand causing down under environment stress, selects the maturing stage not lodge the genetic resources of material as breeding resistant to lodging.
3, anti-fall material initiative: utilize anti-fall resource material and the excellent material of other Comprehensive Traits or hybrid rice parents to carry out artificial hybridization, according to pedigree selection, plants F causing down under environment stress
2-F
4for colony, the individual plant repeatedly selecting the maturing stage not lodge or strain; F
5generation quality, resistance and comprehensive agronomy Characters Identification are carried out to anti-fall strain, cultivate male sterile line also need carry out confining force qualification, restorer carries out restoring force qualification.
4, anti-fall breed of variety: above-mentioned material is carried out add generation stable, according to breeding objective, M8003 line is carried out to other proterties, conventional variety resistant to lodging can be cultivated; Retentive for tool strain and sterile cytoplasm are carried out backcrossing making and protects, anti-fall male sterile line can be cultivated; Restoring force strain will be possessed carry out adding for stable, anti-fall restorer can be cultivated; Utilize male sterile line resistant to lodging and restorer preparing hybrid to combine, select other proterties according to breeding objective, anti-fall hybrid combination can be cultivated.
A kind of rice varieties breeding method resistant to lodging of the present invention, tool has the following advantages:
1, can be continuously applied in rice breeding process and cause the selection pressure of falling adverse circumstance, guarantee the strong lodging resistant force being bred as rice material or kind, improve the anti-fall breeding efficiency of paddy rice, for anti-fall breeding provides a kind of practicable new method, significantly can improve super hybridization rice kind versatility aborning.
2, can carry out lodging resistance qualification to improved variety, according to its lodging resistance determination promoting region and formulation lodging-prevention production measure, effectively prevention large area produces lodging loss.
Adopt the present invention, we utilize anti-fall rice pest insects material, by hybridizing with existing key male sterile line (female parent) and restorer (male parent), reestablish diplomatic relations, to filial generation strain high nitrogen, highdensity cause down environment stress under carry out anti-fall Material selec-tion, cultivated anti-fall resistance to rich water rice parent material Q6A and the Q extensive 28 of large spike, with its combo hybrid combination Q6 excellent 28 shows big panicle many grains per panicle, fertilizer resistance anti-lodging power is strong, yield level is high.
Claims (1)
1. a rice varieties breeding method resistant to lodging, is made up of following steps:
(1) cause the setting of falling environment stress: on the normal amount of nitrogen and planting density basis of local Rice Production, nitrogen amount applied is improved 60%, density increases by 50%, and the biological yield at heading stage improves 30%.Fertilization mode is: base fertilizer 50%, jointing fertilizer 50%, and base fertilizer is joined by 1: 0.5: 0.6 and executed phosphorus and potash fertilizer, guarantees normal plants.
(2) anti-fall Screening germplasm: plant the resource material that other proterties meets breeding demand causing down under environment stress, selects the maturing stage not lodge the genetic resources of material as breeding resistant to lodging.
(3) anti-fall material initiative: utilize anti-fall resource material and the excellent material of other Comprehensive Traits or hybrid rice parents to carry out artificial hybridization, according to pedigree selection, plants F causing down under environment stress
2-F
4for colony, the individual plant repeatedly selecting the maturing stage not lodge or strain; F
5generation quality, resistance and comprehensive agronomy Characters Identification are carried out to anti-fall strain, cultivate male sterile line also need carry out confining force qualification, restorer carries out restoring force qualification.
(4) anti-fall breed of variety: above-mentioned material is carried out add generation stable, according to breeding objective, M8003 line is carried out to other proterties, conventional variety resistant to lodging can be cultivated; Retentive for tool strain and sterile cytoplasm are backcrossed to make and protects, anti-fall male sterile line can be cultivated; Restoring force strain will be possessed carry out adding for stable, anti-fall restorer can be cultivated; Utilize male sterile line resistant to lodging and restorer preparing hybrid to combine, select other proterties according to breeding objective, anti-fall hybrid combination can be cultivated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410276171.7A CN105284589A (en) | 2014-06-20 | 2014-06-20 | Cultivation method for lodging-resistant rice variety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410276171.7A CN105284589A (en) | 2014-06-20 | 2014-06-20 | Cultivation method for lodging-resistant rice variety |
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| CN105284589A true CN105284589A (en) | 2016-02-03 |
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| CN201410276171.7A Pending CN105284589A (en) | 2014-06-20 | 2014-06-20 | Cultivation method for lodging-resistant rice variety |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108934857A (en) * | 2018-08-17 | 2018-12-07 | 全州县咸水虹桥米业有限公司 | A kind of breeding method of upland rice seed rice |
| CN110073969A (en) * | 2019-05-16 | 2019-08-02 | 湖南杂交水稻研究中心 | A method of rice breeding is assisted using index resistant to lodging |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102771382A (en) * | 2012-07-30 | 2012-11-14 | 江苏丰源种业有限公司 | Cultivating method for japonica rice variety strong in lodging resistance and suitable for mechanical transplanting of rice |
| CN103609435A (en) * | 2013-12-12 | 2014-03-05 | 安徽科技学院 | Breeding method of waxy corn lodging-resistance inbred line |
-
2014
- 2014-06-20 CN CN201410276171.7A patent/CN105284589A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102771382A (en) * | 2012-07-30 | 2012-11-14 | 江苏丰源种业有限公司 | Cultivating method for japonica rice variety strong in lodging resistance and suitable for mechanical transplanting of rice |
| CN103609435A (en) * | 2013-12-12 | 2014-03-05 | 安徽科技学院 | Breeding method of waxy corn lodging-resistance inbred line |
Non-Patent Citations (5)
| Title |
|---|
| 中华人民共和国国家质量监督检验检疫总局: "《GB 20413-2006 过磷酸钙》", 31 December 2006, 中国标准出版社 * |
| 中华人民共和国国家质量监督检验检疫总局: "《GB 6549-2011 氯化钾》", 30 November 2011, 中国标准出版社 * |
| 杨世民 等: "氮肥水平和栽插密度对杂交稻茎秆理化特性与抗倒伏性的影响", 《作物学报》 * |
| 汪森富 等: "氮磷钾平衡施用对水稻产量及化肥利用率的影响", 《耕作与栽培》 * |
| 田保明 等: "农作物倒伏及其影响因素分析", 《中国农学通报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108934857A (en) * | 2018-08-17 | 2018-12-07 | 全州县咸水虹桥米业有限公司 | A kind of breeding method of upland rice seed rice |
| CN110073969A (en) * | 2019-05-16 | 2019-08-02 | 湖南杂交水稻研究中心 | A method of rice breeding is assisted using index resistant to lodging |
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Application publication date: 20160203 |
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