CN101171905A - Hybridization non-glutinous rice combination 9 excellent 418 high production seed producing method - Google Patents
Hybridization non-glutinous rice combination 9 excellent 418 high production seed producing method Download PDFInfo
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- CN101171905A CN101171905A CNA2007101318914A CN200710131891A CN101171905A CN 101171905 A CN101171905 A CN 101171905A CN A2007101318914 A CNA2007101318914 A CN A2007101318914A CN 200710131891 A CN200710131891 A CN 200710131891A CN 101171905 A CN101171905 A CN 101171905A
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Abstract
The invention discloses a hybrid Japonica rice combination 9 superior 418 high yielding seed production method, which belongs to the Japonica hybrid rice seed production method. The invention utilizes the Japonica hybrid rice sterile line 9201A with high stigma exertion rate and good property stability as the maternal plant, and the japonica-cline type restoring line C418 as the paternal plant, and the seed production is performed through the supplementary measures of security separation, seeding at the optimum stage, reasonable planting, appropriate row ratio, blooming period adjustment, reasonable use of 920, artificial supplementary pollination, insect and disease prevention, and sickly and off-type plants, etc. Proved by experiments, the invention has the advantage that the seed production yield exceeds 200 kilograms per mu. The seed production cost is low, the yield of hybrid Japonica rice seed production is obviously enhanced, and the purity of the produced hybrid seed is more than 98 percent.
Description
Technical field
The present invention relates to hybrid rice seed breeding process, specifically is that a kind of Japonica Hybrid makes up 9 excellent 418 high-yield seeds production methods.
Background technology
The development of China's hybridization long-grained nonglutinous rice has obtained great achievement, and the development of Japonica Hybrid is relatively very slow.Breeding circle of tracing it to its cause general flat think the Japonica Hybrid hybrid seed yield not high be one of the heaviest factor of restriction development.What Japonica Hybrid was most widely used three is that male sterile line all belongs to BT type male sterile line, all is to utilize the conventional japonica rice transformation of each ecological rice workspace to form.The male sterile line angle of glume opening that this direct transformation becomes is little, stigma exposing ratio is almost nil, outcrossing seed-setting rate is low, cytoplasmic in addition negative effect causes the male sterile line flowering time than the obvious delay of maintenance line, also more be later than recovery system with certain long-grained nonglutinous rice blood relationship, differ greatly when causing father's flower of female parent, add round-grained rice type hybrid seeding and be subject to weather, moisture, factor affecting such as fertilizer, the less-than-ideal phenomenon of this flower synchronization of father and mother easily takes place, cause the Japonica Hybrid hybrid seed yield low, the sterile line propagation difficulty, it is higher to make numerous kind of cost, has seriously restricted applying of Japonica Hybrid.
Summary of the invention
The objective of the invention is to avoid above-mentioned weak point of the prior art and provide a kind of Japonica Hybrid to make up 9 excellent 418 high-yield seeds production methods.It is to utilize a kind of stigma exposing ratio height, and the stable good male sterile line of proterties is as female parent, and recovering with japonica-cline type is that C418 makes male parent, by the first-filial generation seed of the three method training preparing high-purity high yields 9 excellent 418 that are.
Technical scheme of the present invention is as follows: a kind of Japonica Hybrid makes up 9 excellent 418 high-yield seeds production methods, it is to utilize a kind of stigma exposing ratio height, the good japonica rice sterile line 9201A of property stability is as female parent, recovering with japonica-cline type is that C418 makes male parent, makes high-purity high yield 9 excellent 418 Japonica Hybrid combination generation seeds by the three method trainings that are; Concrete main point of strain breeding and method are as follows:
(1) safety is isolated: space length＞500 meter, or carry out the production of hybrid seeds time with other Japonica rice kind of heading flowering period of being separated by more than 20 days and isolate;
(2) begin sowing in good time: first phase male parent can late sowing than female parent 8～10 days, and second phase male parent was than maternal late sowing 18～20 days, and two phase male parents were separated by 8～10 days;
(3) plant row density when: father and mother's one's own profession is than 2: 8-2: 10, and 5 * 4 cun of distances between rows and hills, this interval of father and mother 7-8 cun; Maternal cave plants the 2-3 seedling, and the male parent cave plants the 2-3 seedling, and two phases of male parent are respectively planted delegation, and June, early and middle ten days was transplanted, and planted female parent earlier, after plant male parent, block-by-block is planted; Father and mother originally all will plant the basic seedling of foot;
(4) land for growing field crops rich water quality management: base fertilizer mu is executed carbon ammonium 40-50 kilogram, phosphate fertilizer 40-50 kilogram.Father and mother originally plant the 5-7 days general carbon ammoniums of executing in back and urge for 30 kilograms/mu to tiller, and cross 7 ~ 10 days male parent gross areas and execute urea 5-7 kilogram partially for every mu.Middle and later periods can be regulated to execute and regulate fertile and fringe granulated fertilizer in conjunction with the florescence.Plant the gently roasting field of left and right sides gradation in back 30 days, roasting field is unsuitable overweight.
(5) florescence prediction and adjusting: beginning before and after July 20, look into this ear differentiation of father and mother process one time every stripping in 3 days, ear differentiation prometaphase father belongs to normally 0.5-1 phase morning, should in time regulate as difference is excessive; Get a little representatively during inspection, can not only look into the part;
(6) cut leaf heading stage and spray gibberellin: father and mother originally all prescind 1/3rd of sword-like leave when seeing fringe 10%; Gibberellin 920 spray methods are pressed gross area and are calculated: under this flower synchronization of father and mother good situations, cut the maternal pre-together spray 1 gram/mu of the preceding 1-2 God of leaf; Cut leaf male parent on same day mu spray 4 grams, second day maternal mu spray 4 gram, the 3rd day male parent 4 grams that fill spray, whether female parent sprayed the 1-2 gram again in the 4th day, fill spray according to this fringe of father and mother potential difference decision male parent later on again;
(7) catch up with powder: began to catch up with powder the maternal same day when blooming in a large number in good time.Fine hot weather catches up with the powder time for the first time about about 11:00, catches up with one time every 30 minutes later on, until the female parent end of blooming.Cloudy day is caught up with the powder time retardation during low temperature for the first time; Afternoon rainy day, rain stopped still can bloom about the 3:00 of back, should note in time catching up with powder;
(8) impurity elimination is protected pure: rogueing is most important.Remove special-shaped strain according to this characteristic feature of father and mother before the heading, florescence arrangement special messenger removes loose powder strain in special-shaped strain in father, the female parent and the female parent; Thoroughly impurity elimination before the results confirms that qualified stepfather's female parent separately receives, takes off, shines, stores up.
The present invention compares with existing other Japonica Hybrid has following advantage:
1, first-filial generation kind output height: per mu yield 650-700 kilogram, can increase production one one-tenth more than.
2, comprehensive proterties such as resistance is good: bacterial blight-resisting, and blast resisting, anti-(anti-) stripe virus disease, no false smut, banded sclerotial blight is light.
3, adaptability is wider: be suitable for Jiangsu along Huaihe River, the Huaibei, the central and north, Anhui, the middle and south, Henan, southern Shandong and Guanzhong area popularizing planting.
4, be easy to the production of hybrid seeds: use the technology of the present invention, every mu of hybrid seed yield surpasses 200 kilograms, and guarantees that purity is more than 98%.
Embodiment
Further specify method of the present invention below in conjunction with embodiment.
Embodiment:
The present invention is a producing seeds of japonica hybrid rice, with indica hybrid rice production of hybrid seeds difference.With a kind of stigma exposing ratio height, the stable good japonica rice sterile line 9201A of proterties is as female parent, with the japonica-cline type recovery is that C418 makes male parent, by supplementary measures such as safety isolation, proper seeding, reasonable cultivation, the row ratio that suits, adjusting florescence, use " 920 ", artificial supplementary pollination, prevention and elimination of disease and pests and roguing rationally.
Concrete seeding technique measure:
(1) safety is isolated: space length＞500 meter, or carry out the production of hybrid seeds time with other Japonica rice kind of heading flowering period of being separated by more than 20 days and isolate;
(2) begin sowing in good time: first phase male parent can late sowing than female parent 8～10 days, and second phase male parent was than maternal late sowing 18～20 days, and two phase male parents were separated by 8～10 days;
(3) plant row density when: father and mother's one's own profession is than 2: 8-2: 10, and 5 * 4 cun of distances between rows and hills, this interval of father and mother 7-8 cun; Maternal cave plants the 2-3 seedling, and the male parent cave plants the 2-3 seedling, and two phases of male parent are respectively planted delegation, and June, early and middle ten days was transplanted, and planted female parent earlier, after plant male parent, block-by-block is planted; Father and mother originally all will plant the basic seedling of foot;
(4) land for growing field crops rich water quality management: base fertilizer mu is executed carbon ammonium 40-50 kilogram, phosphate fertilizer 40-50 kilogram.Father and mother originally plant the 5-7 days general carbon ammoniums of executing in back and urge for 30 kilograms/mu to tiller, and cross 7 ~ 10 days male parent gross areas and execute urea 5-7 kilogram partially for every mu.Middle and later periods can be regulated to execute and regulate fertile and fringe granulated fertilizer in conjunction with the florescence.Plant the gently roasting field of left and right sides gradation in back 30 days, roasting field is unsuitable overweight.
(5) florescence prediction and adjusting: beginning before and after July 20, look into this ear differentiation of father and mother process one time every stripping in 3 days, ear differentiation prometaphase father belongs to normally 0.5-1 phase morning, should in time regulate as difference is excessive; Get a little representatively during inspection, can not only look into the part;
(6) cut leaf heading stage and spray gibberellin: father and mother originally all prescind 1/3rd of sword-like leave when seeing fringe 10%; Gibberellin 920 spray methods are pressed gross area and are calculated: under this flower synchronization of father and mother good situations, cut the maternal pre-together spray 1 gram/mu of the preceding 1-2 God of leaf; Cut leaf male parent on same day mu spray 4 grams, second day maternal mu spray 4 gram, the 3rd day male parent 4 grams that fill spray, whether female parent sprayed the 1-2 gram again in the 4th day, fill spray according to this fringe of father and mother potential difference decision male parent later on again;
(7) catch up with powder: began to catch up with powder the maternal same day when blooming in a large number in good time.Fine hot weather catches up with the powder time for the first time about about 11:00, catches up with one time every 30 minutes later on, until the female parent end of blooming.Cloudy day is caught up with the powder time retardation during low temperature for the first time; Afternoon rainy day, rain stopped still can bloom about the 3:00 of back, should note in time catching up with powder;
(8) impurity elimination is protected pure: rogueing is most important.Remove special-shaped strain according to this characteristic feature of father and mother before the heading, florescence arrangement special messenger removes loose powder strain in special-shaped strain in father, the female parent and the female parent; Thoroughly impurity elimination before the results confirms that qualified stepfather's female parent separately receives, takes off, shines, stores up.
(9) whole growing is strengthened the extermination of disease and insect pest, pulls out outside proterties and the discrepant plant of maternal Xu 9201A, in time gathers in the crops behind the seed maturity.
Through the 2004-2006 evidence, hybrid seed yield is above 200 kilograms/mu.Breeding cost is low, significantly improved hybrid seed yield, make the hybrid seed purity height, and purity can reach more than 98%.
Claims (1)
1. a Japonica Hybrid makes up 9 excellent 418 high-yield seeds production methods, it is characterized in that, it is to utilize a kind of stigma exposing ratio height, the japonica rice sterile line 9201A that property stability is good does maternal, recovering with japonica-cline type is that C418 makes male parent, makes high-purity high yield 9 excellent 418 Japonica Hybrid combination generation seeds by the three method trainings that are; Concrete main point of strain breeding and method are as follows:
(1) safety is isolated: space length＞500 meter, or carry out the production of hybrid seeds time with other Japonica rice kind of heading flowering period of being separated by more than 20 days and isolate;
(2) begin sowing in good time: first phase male parent is than maternal late sowing 8～10 days, and second phase male parent was than maternal late sowing 18～20 days, and two phase male parents were separated by 8～10 days;
(3) plant row density when: father and mother's one's own profession is than 2: 8-2: 10, and 5 * 4 cun of distances between rows and hills, this interval of father and mother 7-8 cun; Maternal cave plants the 2-3 seedling, and the male parent cave plants the 2-3 seedling, and two phases of male parent are respectively planted delegation, and June, early and middle ten days was transplanted, and planted female parent earlier, after plant male parent, block-by-block is planted; Father and mother originally all will plant the basic seedling of foot;
(4) land for growing field crops rich water quality management: base fertilizer mu is executed carbon ammonium 40-50 kilogram, phosphate fertilizer 40-50 kilogram; Father and mother originally plant the 5-7 days general carbon ammoniums of executing in back and urge for 30 kilograms/mu to tiller, and cross 7 ~ 10 days male parent gross areas and execute urea 5-7 kilogram partially for every mu; Middle and later periods executes in conjunction with the florescence and regulates fertile and fringe granulated fertilizer; Plant the gently roasting field of left and right sides gradation in back 30 days, roasting field is unsuitable overweight;
(5) florescence prediction and adjusting: beginning before and after July 20, look into this ear differentiation of father and mother process one time every stripping in 3 days, ear differentiation prometaphase father belongs to normally 0.5-1 phase morning, should in time regulate as difference is excessive; Get a little representatively during inspection, can not only look into the part;
(6) cut leaf heading stage and spray gibberellin: father and mother originally all prescind 1/3rd of sword-like leave when seeing fringe 10%; Gibberellin 920 spray methods are pressed gross area and are calculated: under this flower synchronization of father and mother good situations, cut the preceding 1-2 God female parent of leaf and spray 1 gram/mu simultaneously; Cut leaf male parent on same day mu spray 4 grams, second day maternal mu spray 4 gram, the 3rd day male parent 4 grams that fill spray, whether female parent sprayed the 1-2 gram again in the 4th day, fill spray according to this fringe of father and mother potential difference decision male parent later on again;
(7) catch up with powder: began to catch up with powder the maternal same day when blooming in a large number in good time; Fine hot weather catches up with the powder time for the first time about about 11:00, catches up with one time every 30 minutes later on, until the female parent end of blooming.Cloudy day is caught up with the powder time retardation during low temperature for the first time; Afternoon rainy day, rain stopped still can bloom about the 3:00 of back, should note in time catching up with powder;
(8) impurity elimination is protected pure: remove special-shaped strain according to this characteristic feature of father and mother before the heading, florescence arrangement special messenger removes loose powder strain in special-shaped strain in father, the female parent and the female parent; Thoroughly impurity elimination before the results confirms that qualified stepfather's female parent separately receives, takes off, shines, stores up.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101822209B (en) * | 2010-02-02 | 2011-11-30 | 湖南省水稻研究所 | Simple seed production method of little-hybrid rice seeds |
| CN102687664A (en) * | 2012-06-19 | 2012-09-26 | 肖正来 | Method for producing seeds of hybrid rice |
| CN108112433A (en) * | 2017-12-18 | 2018-06-05 | 湖南农业大学 | A kind of producing method for seed for improving Seed Vigor of Hybrid Rice |
| CN112042528A (en) * | 2020-10-10 | 2020-12-08 | 上海市农业科学院 | Mechanical powder removing method for hybrid japonica rice |
| CN112136686A (en) * | 2020-10-10 | 2020-12-29 | 上海市农业科学院 | Method for pollinating japonica hybrid rice by mechanical assistance |
-
2007
- 2007-09-11 CN CNA2007101318914A patent/CN101171905A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101822209B (en) * | 2010-02-02 | 2011-11-30 | 湖南省水稻研究所 | Simple seed production method of little-hybrid rice seeds |
| CN102687664A (en) * | 2012-06-19 | 2012-09-26 | 肖正来 | Method for producing seeds of hybrid rice |
| CN102687664B (en) * | 2012-06-19 | 2014-01-22 | 安徽华凯农业科技有限公司 | Method for producing seeds of hybrid rice |
| CN108112433A (en) * | 2017-12-18 | 2018-06-05 | 湖南农业大学 | A kind of producing method for seed for improving Seed Vigor of Hybrid Rice |
| CN108112433B (en) * | 2017-12-18 | 2020-06-23 | 湖南农业大学 | Seed production method for improving hybrid rice seed vitality |
| CN112042528A (en) * | 2020-10-10 | 2020-12-08 | 上海市农业科学院 | Mechanical powder removing method for hybrid japonica rice |
| CN112136686A (en) * | 2020-10-10 | 2020-12-29 | 上海市农业科学院 | Method for pollinating japonica hybrid rice by mechanical assistance |
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Open date: 20080507 |