CN105961193A - Method for producing two-line rice hybrid seeds in asynchronous flowering period - Google Patents
Method for producing two-line rice hybrid seeds in asynchronous flowering period Download PDFInfo
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- CN105961193A CN105961193A CN201610501470.5A CN201610501470A CN105961193A CN 105961193 A CN105961193 A CN 105961193A CN 201610501470 A CN201610501470 A CN 201610501470A CN 105961193 A CN105961193 A CN 105961193A
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- seeds
- glutinous
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- rice
- time
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
- A01H1/00—Processes for modifying genotypes ; Plants characterised by associated natural traits
- A01H1/02—Methods or apparatus for hybridisation; Artificial pollination ; Fertility
Abstract
The invention provides a method for producing two-line rice hybrid seeds in asynchronous flowering period. The method includes steps of a, selecting seeds by means of carrying out seed selecting and breeding or transformation on round-grained non-glutinous sterile lines, round-grain non-glutinous general lines and round-grain non-glutinous restoration lines which are used as male parents; b, producing the hybrid seeds at the hybrid seed production time from the end of the August to the beginning of the September; c, applying fertilizers, to be more specific, spraying the boric fertilizers on the male parents in young ear periods and shifting flower seasons to an earlier time; d, removing dew on female parents by the aid of bamboo poles every morning in fine days in earing and flowering seasons of the female parents; e, harvesting the seeds, to be more specific, removing weeds with obvious difference in sheath, leaf colors, plant types, leaf types and the like in rice seedling seasons and timely harvesting the seeds when the seeds are ripe. Flower time characteristics of the round-grain non-glutinous sterile lines, the round-rain non-glutinous general lines and round-grain non-glutinous restoration lines are similar to flower time characteristics of female parent non-glutinous rice. The method has the advantages that the flower seasons can be shifted to the earlier time in modes of smartly applying the boric acid fertilizers and removing the dew in the early morning, the problem of flowering asynchronism in existing procedures for producing hybrid seeds can be solved, flower seasons of the male parents and the female parents coincide with one another, the hybrid setting percentage can be increased, and the purposes of producing the hybrid seeds and increasing the production can be achieved.
Description
Technical field
The present invention relates to a kind of colored time do not meet two is the producing method for seed of paddy rice cross breeding.
Background technology
The hybrid rice that past promotes is all the cross combination of Xian round-grained rice type, and this kind of combination is all long-grained nonglutinous rice due to Parent, opens
Flower habit is roughly the same, does not meet contradiction and do not highlight during the production of hybrid seeds during flower, as long as there being good Seedling frame, flower synchronization can obtain well
High yield.But the Hybrids of Indica and Japonica production of hybrid seeds in recent years, owing to how indica type light (warm) sterile line makees female parent, round-grained rice type or japonica-cline type are extensively
Making male parent combo with restorer, although with the obvious advantage, but do not meet phenomenon during flower and be susceptible to, it is the highest that this has resulted in setting percentage.
Summary of the invention
In order to solve the problems referred to above, the present invention propose a kind of colored time do not meet two is the producing method for seed of paddy rice cross breeding, pass through
Execute boron fertilizer ingeniously and catch up with the mode of dew to do sth. in advance the florescence early in the morning, improve the setting percentage of outcrossing, reach the purpose of seeds for increasing yield.
The present invention realizes particular by techniques below scheme:
The two of a kind of flowering asynchronism are the producing method for seed of paddy rice cross breeding, comprise the following steps:
A, seed selection: when selection-breeding or transformation have and maternal long-grained nonglutinous rice spends, japonica rice sterile line and the round-grained rice type of characteristic close are extensively and restorer
Make male parent；
B, the production of hybrid seeds: production of hybrid seeds arrangement of time is by the end of August at the beginning of 9 months；
C, fertilising: male parent is at children's fringe phase sprayed boric fertilizer, florescence ahead of time；
D, catch up with dew: maternal heading flowering period, the dew that fine day is rushed on female parent every morning with arrowroot；
E, results: nursery period removes the significant hybrid strains of difference such as sheath, leaf color difference, plant type, blade profile, during seed maturity
Results in time.
Further, described male parent is 30885 to be Oryza sativa L. rice varieties.
Further, in step c, every mu 150～250g boron fertilizer are watered 50kg and use.
The producing method for seed having the beneficial effect that the present invention that the present invention produces solves the male parent female parent florescence not by executing boron fertilizer ingeniously
With problem, additionally at maternal heading flowering period, the dew that fine day is rushed on female parent with arrowroot every morning, make female parent open ahead of time
Flower make male parent and maternal colored time meet well, reach the purpose of abundant outcrossing, improve the yield of the production of hybrid seeds.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all
Belong to the scope of protection of the invention.
The two of a kind of flowering asynchronism are the producing method for seed of paddy rice cross breeding, comprise the following steps:
A, seed selection: when selection-breeding or transformation have and maternal long-grained nonglutinous rice spends, japonica rice sterile line and the round-grained rice type of characteristic close are extensively and restorer
Making male parent, this is fundamentally to overcome two some effectives do not met when being flower in the production of hybrid seeds, and Main Means screens exactly and goes out with transformation
Japonica rice sterile line and the round-grained rice type bloomed morning are extensively sterile line and restorer, as 30885 is that rice varieties etc. can be time colored for sterile line
Advance to the morning at 9 o'clock to 10 o'clock；
B, the production of hybrid seeds: more suitable at the beginning of the middle and lower reach of Yangtze River production of hybrid seeds is typically scheduled at 9 months by the end of August, arrange when being aided with other and promoting flower
Execute, can make well to meet during flower；
C, fertilising: male parent, at fringe beginning, sprayed boric fertilizer phase, when can spend ahead of time about 1 hour, is watered 50 kilograms of sprays one with 200g boron fertilizer
Mu ground effectiveness comparison is good, and notable less than 150g/ mu effect, more than the easy burn seedlings of 250g/ mu, this is to draw through repetition test
, the consumption the most reasonably controlling boron fertilizer is critically important；
D, catch up with dew: fine day makes spike of rice scatter with the dew that arrowroot is rushed on female parent morning, light-receiving area can be increased, improve fringe layer
Temperature, so that female parent is bloomed 40-50 minute ahead of time, thus well meets when allowing colored；
E, results: nursery period removes the significant hybrid strains of difference such as sheath, leaf color difference, plant type, blade profile, during seed maturity
Results in time.
The producing method for seed of the present invention can avoid male parent in prior art, maternal colored time cross events short or do not intersect
The problem that the setting percentage that causes is low, by the fertilising of science with catch up with the operations such as dew, by male parent, maternal colored time all extend, from
And reach to meet or Encounter Time is longer during flower, improving setting percentage, hybrid seed yield is greatly improved.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (3)
1. two not met when spending are the producing method for seed of paddy rice cross breeding, it is characterised in that comprise the following steps:
A, seed selection: when selection-breeding or transformation have and maternal long-grained nonglutinous rice spends, japonica rice sterile line and the round-grained rice type of characteristic close are extensively and restorer
Make male parent；
B, the production of hybrid seeds: production of hybrid seeds arrangement of time is by the end of August at the beginning of 9 months；
C, fertilising: male parent is at children's fringe phase sprayed boric fertilizer, florescence ahead of time；
D, catch up with dew: maternal heading flowering period, the dew that fine day is rushed on female parent every morning with arrowroot；
E, results: nursery period removes the significant hybrid strains of difference such as sheath, leaf color difference, plant type, blade profile, during seed maturity
Results in time.
The most as claimed in claim 1 a kind of colored time do not meet two is the producing method for seed of paddy rice cross breeding, it is characterised in that described father
Originally it is 30885 to be rice varieties.
The most as claimed in claim 1 a kind of colored time do not meet two is the producing method for seed of paddy rice cross breeding, it is characterised in that step c
In every mu 150～250g boron fertilizer be watered 50kg and use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610501470.5A CN105961193A (en) | 2016-06-30 | 2016-06-30 | Method for producing two-line rice hybrid seeds in asynchronous flowering period |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610501470.5A CN105961193A (en) | 2016-06-30 | 2016-06-30 | Method for producing two-line rice hybrid seeds in asynchronous flowering period |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105961193A true CN105961193A (en) | 2016-09-28 |
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ID=56953371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610501470.5A Pending CN105961193A (en) | 2016-06-30 | 2016-06-30 | Method for producing two-line rice hybrid seeds in asynchronous flowering period |
Country Status (1)
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| CN (1) | CN105961193A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104663422A (en) * | 2015-02-05 | 2015-06-03 | 广德县农业科学研究所 | Hybrid rice seed production method |
| CN104871963A (en) * | 2015-06-14 | 2015-09-02 | 安徽徽大农业有限公司 | Seed preparation method for blooming time overslip two-line rice hybridization |
| CN106069722A (en) * | 2016-06-26 | 2016-11-09 | 合肥慧谷农业科技有限公司 | A kind of colored time do not meet two is the producing method for seed of paddy rice cross breeding |
-
2016
- 2016-06-30 CN CN201610501470.5A patent/CN105961193A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104663422A (en) * | 2015-02-05 | 2015-06-03 | 广德县农业科学研究所 | Hybrid rice seed production method |
| CN104871963A (en) * | 2015-06-14 | 2015-09-02 | 安徽徽大农业有限公司 | Seed preparation method for blooming time overslip two-line rice hybridization |
| CN106069722A (en) * | 2016-06-26 | 2016-11-09 | 合肥慧谷农业科技有限公司 | A kind of colored time do not meet two is the producing method for seed of paddy rice cross breeding |
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Application publication date: 20160928 |
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