CN101697708A - Method for producing seeds of japonica hybrid rice - Google Patents
Method for producing seeds of japonica hybrid rice Download PDFInfo
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- CN101697708A CN101697708A CN200910228819A CN200910228819A CN101697708A CN 101697708 A CN101697708 A CN 101697708A CN 200910228819 A CN200910228819 A CN 200910228819A CN 200910228819 A CN200910228819 A CN 200910228819A CN 101697708 A CN101697708 A CN 101697708A
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Abstract
The invention relates to technology for producing seeds of japonica hybrid rice, and belongs to the technical field of rice seed production. The japonica sterile line 17A with high stigma exposure rate and good character stability is taken as a female parent, the japonica-clinous restorer line is taken as a male parent, and seeds of japonica hybrid combination Longyou1715 with high purity and high yield are produced by a three line method.
Description
The present invention relates to the Japonica Hybrid seeding technique, be specifically related to the high-yield seeds production method of Japonica Hybrid grand excellent 1715.
Background technology
Paddy rice produces hybrid rice seed based on self-pollination by three line method or two line method, is maternal with male sterile promptly, to recover is male parent, male sterile line accepts to recover the pollen of system, realizes that cross pollination is solid, produces the F1 seed of heterozygosis and uses on producing.The hybrid rice seed of a large amount of large-scale productions generally is to be alternate plantation with male sterile line and recovery, by the cultivation adjusting father and mother is originally bloomed simultaneously; auxiliary with the manual pollination; the grain husk that pollen flies away male sterile line is taken, finished fertilization, the clever flower development of after fertilization becomes healthy and strong seed.In order to improve hybrid seed yield, need to determine this seedtime of father and mother, father and mother's one's own profession ratio, this transplanting of father and mother density and mode, in conjunction with technology such as florescence adjusting and field management, farthest obtain high hybrid seed yield.By being set, secure isolation zone guarantees seed production purity with artificial impurity removing technology.
But, because the light temperature physiological property difference that each combined parent strain had, need be according to parent's characteristic, concrete every technical parameter of determining the production of hybrid seeds, set up the colony and the cross pollination situation of high yield, realize high cross pollination rate and maternal high ripening rate,, finally realize high hybrid seed yield to give full play to the productive potential of this combination production of hybrid seeds.
Summary of the invention
The invention provides the high-yield seeds production technique of Japonica Hybrid grand excellent 1715.
On the basis that grand excellent 1715 parents' the characteristic of growing is fully studied, fully optimize seeding technique, improve father and mother's pattern of farming originally, realize the hybrid seed yield of 200-250 kilogram/mu.Determine the best sowing date of hybrid combination and father and mother this date of seeding is poor, adopt two phase male parents etc., guarantee this flower synchronization of father and mother.Design wide male parent row, narrow maternal row, the maternal configuration mode of inserting many seedlings of little spacing in the rows obtains high yield colony, and hybrid seed yield is significantly improved.
Technical scheme of the present invention is:
Utilize the stigma exposing ratio height, the japonica rice sterile line 17A that property stability is good does maternal, and recovering with japonica-cline type is that R1415 makes male parent, produces grand excellent 1715 Japonica Hybrid seeds by three methods that are.
Its concrete production of hybrid seeds step comprises:
(1) isolates: do not have other rice varieties plantation in 500 meters scopes around the seed farm.
(2) sowing date: maternal single sowing, male parent divide the sowing of two phases.The 7-10 of male parent after female parent the is broadcast days sowing first phases, second the sowings in 17-20 days after broadcasting aspire to female parent, two male parent dates of seeding phase, differed 10 days.
(3) sow and young plants management wholely.
(4) transplant rational close planting in good time:
A. transplant, father and mother originally transplant simultaneously in good time, and the maternal length of time rice seedlings grow was at 35-40 days.
B. father and mother's one's own profession was than 2: 8.
C. male parent adopts wide row, the maternal narrow row that adopts, and this spacing in the rows of father and mother is identical, the every cave rice transplanting of male parent number
More than female parent.
(5) Honda moisture and fertilizer management:
A. basal dressing and base fertilizer.
B. moisture: shallow water transplants seedlings, the 2-3cm deep water seedling of living, and thin moisture tiller, the cave stem number of tillering reaches 10
Dry field when individual keeps deep water flowering stage, the pustulation period alternation of wetting and drying.
(6) florescence is regulated:
(7) manually catch up with powder:
Manually catch up with powder at maternal full-bloom stage, general fine day 10:30-11:00 in the morning carries out catching up with the first time powder, caught up with powder one time, and stopped to catch up with powder after female parent closes grain husk in per afterwards 25 minutes.At least catch up with every day powder more than 3 times.Overcast and rainyly when blooming in a large number, female parent begins to catch up with powder.
This rational close planting density of father and mother for example is in the above-mentioned step (4): the male parent line width is 25cm, and maternal line width 16.6cm, father and mother be 30cm in the ranks originally, and male parent and maternal spacing in the rows all are 13.3cm.The 3-4 strain of the every cave of male parent, maternal every cave 2-3 strain.
Fertilizer management for example is in the above-mentioned step (5):
(1) base manure is composite fertilizer 25kg/ mu, urea 10kg/ mu.
(2) for can early growth and quick tiller after guaranteeing to turn green behind the rice transplanting, after transplanting 5-7 days, every mu imposes urea
10-12.5kg/ mu or carbonic hydroammonium 25kg/ mu.
Florescence in the above-mentioned step (6) is regulated: the stripping stem is investigated young fringe developmental process, early the maternal 0-0.5 phase is normal to ear differentiation mid-early stage male parent, if this developmental process of father and mother occurring differed above 0.5 phase, then rise concentration and spray the leading parent of growth with chlormequat 0.5g/, or spray with 0.5g/ liter " 920 " and to grow the hysteresis parent, 3 phases of ear differentiation used " 920 " to regulate in the past.
Embodiment:
(1) isolates: do not have other rice varieties plantation in 500 meters scopes around the seed farm.
(2) sowing date: maternal single sowing, male parent divide the sowing of two phases.The 7-10 of male parent after female parent the is broadcast days sowing first phases, second the sowings in 17-20 days after broadcasting aspire to female parent, two phase male parents differed 10 days sowing time.For example, Mu Ben sowing time is May 19.The first phase male parent is in sowing on May 27, and the second stage of male parent was sowed in 5-6 day in June.
(3) sow wholely:
A. bask seeds, soak seed and carry out the seed disinfection processing.Clean with clear water after 6-8 hour with seed soaking spirit seed soaking during seed soaking, the vernalization two days later of soaking seed again is to showing money or valuables one carries unintentionally for good.
B. the seedbed will select that irrigation and drainage are convenient, soil property is good, the field piece of water conservation, is organized into wide about 1.5 meters seedbed, and that bed surface requires is smooth, soil is evenly thin, will stay the wide ditch of 30cm between the bed, so that management.
(4) young plants management:
A. adopt the watery ricenursery management, require not cut off the water supply, do not flood deeply.
B. take repeatedly to apply fertilizer, base fertilizer 10-15kg composite fertilizer topdresses based on urea.
C. pay close attention to damage by disease and insect, insect pest mainly is rice fulgorid and rice thrips, and disease is is mainly prevented and treated damping off, rice blast, stripe virus disease.
D. enhance field management, cultivate the strong seedling of band tiller.
(5) transplant rational close planting in good time:
A. transplant, father and mother originally transplant simultaneously in good time, and the maternal length of time rice seedlings grow was at 35-40 days.
B. plant row than being defined as father and mother's one's own profession than 2: 8;
C. the transplanting density of You Huaing
Male parent adopts wide row, the maternal narrow row that adopts, and this spacing in the rows of father and mother is identical, and the every cave rice transplanting of male parent number is more than female parent.For example: the male parent line width is 25cm, and maternal line width 16.6cm, father and mother be 30cm in the ranks originally, and male parent and maternal spacing in the rows all are 13.3cm.The 3-4 strain of the every cave of male parent, maternal every cave 2-3 strain.The wide line-spacing meaning of male parent is to be convenient to the male parents transplanting of two phases and farming activities such as fertilising, spray medicine are carried out, and guarantees that the later stage can reach maternal effective fringe 18-20 ten thousand/mu, male parent 7-8 ten thousand/mu, female parent is set up high yield colony, form sufficient amount grain husk flower, the florescence concentrates, and obtains maximum pollination grain husk flowers.
(6) Honda management:
A. fertilising: 1. base manure is composite fertilizer 25kg/ mu, urea 10kg/ mu;
2. for can early growth and quick tiller after guaranteeing to turn green behind the rice transplanting, after transplanting 5-7 days, every mu imposes urea 10-12.5kg/ mu or carbonic hydroammonium 25kg/ mu.Can apply Tanaka with disposable behind 100g/ mu nitrofen and the urea mixing when topdressing.
B. moisture: shallow water transplants seedlings, the 2-3cm deep water seedling of living, and thin moisture tiller, the cave stem number dry field when reaching 10 of tillering keeps deep water flowering stage, the pustulation period alternation of wetting and drying.
C. disease pest and weed: in time prevent and treat diseases such as rice blast, stripe virus disease, false smut, insect pests such as control rice fulgorid, leaf roll snout moth's larva, rice plant skipper; Be used with careless jinx, butachlor, once prepare pesticide-clay mixture after turning green and spread fertilizer over the fields, the control crop smothering;
D. control sword-like leave length, conveniently catch up with pollen;
E. short tillering, prepare quick-acting fertilizer, strive for high yield.
(7) florescence is regulated: the differentiation process of judging young fringe with the known conventional method.The 5-10 strain was got in beginning about July 20 every 3 days, and the stripping stem is investigated young fringe developmental process.Early the maternal 0-0.5 phase is normal to ear differentiation mid-early stage male parent, if this developmental process of father and mother occurring differed above 0.5 phase, then rise concentration with chlormequat 0.5g/ and spray the leading parent of growth, or spray growth hysteresis parent with 0.5g/ liter " 920 ", 3 phases of ear differentiation used " 920 " to regulate in the past.
(8) manually catch up with powder:
Manually catch up with powder at maternal full-bloom stage, general fine day 10:30-11:00 in the morning carries out catching up with the first time powder, uses thick rope pulling paddy rice middle and upper part, caught up with powder one time, and stopped to catch up with powder after female parent closes grain husk in per afterwards 25 minutes.At least catch up with every day powder more than 3 times.The powder time is caught up with in overcast and rainy suitable postponement, observes to begin to catch up with powder when female parent is bloomed in a large number.
(9) removal of impurities is protected pure: before blooming according to plant type removal of impurities 1 time, heading seedling stage according to heading stage and plant type removal of impurities 1 time, maternal at full-bloom stage according to whether loose powder is removed maintenance line, before the results according to plant type and solid effect the strain of will mixing remove totally.
(10) results warehouse-in: manually cut male parent earlier, maternal by the unified results of machinery.Results back airing seed, moisture≤14% back packaging and warehousing.
Claims (4)
1. Japonica Hybrid producing method for seed is characterized in that:
Make female parent with japonica rice sterile line 17A, recovering with japonica-cline type is that R1415 makes male parent, by the three method production Japonica Hybrid seeds that are; Its concrete production of hybrid seeds step comprises:
(1) isolates: do not have other rice varieties plantation in 500 meters scopes around the seed farm;
(2) sowing date: maternal single sowing, male parent divide the sowing of two phases; The 7-10 of male parent after female parent the is broadcast days sowing first phases, second the sowings in 17-20 days after broadcasting aspire to female parent, two male parent dates of seeding phase, differed 10 days;
(3) sow and young plants management wholely;
(4) transplant rational close planting in good time:
A. transplant, father and mother originally transplant simultaneously in good time, and the maternal length of time rice seedlings grow was at 35-40 days;
B. father and mother's one's own profession was than 2: 8;
C. male parent adopts wide row, the maternal narrow row that adopts, and this spacing in the rows of father and mother is identical, and the every cave rice transplanting of male parent number is more than female parent;
(5) Honda moisture and fertilizer management:
A. basal dressing and base fertilizer;
B. moisture: shallow water transplants seedlings, the 2-3cm deep water seedling of living, and thin moisture tiller, the cave stem number dry field when reaching 10 of tillering keeps deep water flowering stage, the pustulation period alternation of wetting and drying;
(6) florescence is regulated;
(7) manually catch up with powder:
Manually catch up with powder at maternal full-bloom stage, general fine day 10:30-11:00 in the morning carries out catching up with the first time powder, caught up with powder one time, and stopped to catch up with powder after female parent closes grain husk in per afterwards 25 minutes; At least catch up with every day powder more than 3 times; Overcast and rainyly when blooming in a large number, female parent begins to catch up with powder.
2. according to the method for claim 1, it is characterized in that: this rational close planting density of father and mother is in the described step (4), and the male parent line width is 25cm, and maternal line width 16.6cm, father and mother be 30cm in the ranks originally, and male parent and maternal spacing in the rows all are 13.3cm; The 3-4 strain of the every cave of male parent, maternal every cave 2-3 strain.
3. according to the method for claim 1, it is characterized in that: fertilizer management is in the described step (5),
(1) base manure is composite fertilizer 25kg/ mu, urea 10kg/ mu;
(2) for can early growth and quick tiller after guaranteeing to turn green behind the rice transplanting, after transplanting 5-7 days, every mu imposes urea 10-12.5kg/ mu or carbonic hydroammonium 25kg/ mu.
4. according to the method for claim 1, it is characterized in that: the florescence in the described step (6) is adjusted to,
The stripping stem is investigated young fringe developmental process, early the maternal 0-0.5 phase is normal to ear differentiation mid-early stage male parent, if this developmental process of father and mother occurring differed above 0.5 phase, then rise concentration and spray the leading parent of growth with chlormequat 0.5g/, or rise 920 with 0.5g/ and spray and grow the hysteresis parent, 3 phases of ear differentiation are in the past with 920 adjustings.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102550346A (en) * | 2010-12-28 | 2012-07-11 | 天津天隆农业科技有限公司 | Method for increasing yield of Longyou 619 hybrid seed of three-line japonica hybrid rice |
| CN102835302A (en) * | 2012-09-12 | 2012-12-26 | 上海市农业科学院 | Method for producing seeds of hybrid japonica rice mechanically and fully |
| CN102893853A (en) * | 2012-09-28 | 2013-01-30 | 北京金色农华种业科技有限公司 | Production method of hybrid rice seeds Xinrongyou 837 |
| CN102907310A (en) * | 2012-09-26 | 2013-02-06 | 北京金色农华种业科技有限公司 | Hybrid rice seed Rong Feng You 837 production method |
| CN103202220A (en) * | 2013-03-15 | 2013-07-17 | 北京金色农华种业科技有限公司 | Production method for hybrid rice seeds Youyou107 |
| CN103404431A (en) * | 2013-08-23 | 2013-11-27 | 云南禾朴农业科技有限公司 | Method for regulating seed production flowering phase of japonica rice |
| CN103782857A (en) * | 2014-01-23 | 2014-05-14 | 胡代书 | Cultivating method and seedling planting method of cross-year regrowing rice seeds |
| CN104170717A (en) * | 2013-12-19 | 2014-12-03 | 天津天隆种业科技有限公司 | Method for improving seed production yield of japonica three-line hybrid rice Longyou1715 |
| CN105557110A (en) * | 2015-12-14 | 2016-05-11 | 安徽省中日农业环保科技有限公司 | Hybrid rice pest and disease prevention planting technology |
| CN107950383A (en) * | 2017-12-08 | 2018-04-24 | 江苏沿海地区农业科学研究所 | A kind of small area producing method for seed of hybrid rice with the different female Combination nova of father |
| CN108849333A (en) * | 2018-06-28 | 2018-11-23 | 定远县鑫理想农业科技有限公司 | A kind of high yield paddy rice planting method |
| CN112042528A (en) * | 2020-10-10 | 2020-12-08 | 上海市农业科学院 | Mechanical powder removing method for hybrid japonica rice |
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2009
- 2009-11-27 CN CN200910228819A patent/CN101697708A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102550346A (en) * | 2010-12-28 | 2012-07-11 | 天津天隆农业科技有限公司 | Method for increasing yield of Longyou 619 hybrid seed of three-line japonica hybrid rice |
| CN102835302A (en) * | 2012-09-12 | 2012-12-26 | 上海市农业科学院 | Method for producing seeds of hybrid japonica rice mechanically and fully |
| CN102907310A (en) * | 2012-09-26 | 2013-02-06 | 北京金色农华种业科技有限公司 | Hybrid rice seed Rong Feng You 837 production method |
| CN102893853A (en) * | 2012-09-28 | 2013-01-30 | 北京金色农华种业科技有限公司 | Production method of hybrid rice seeds Xinrongyou 837 |
| CN103202220A (en) * | 2013-03-15 | 2013-07-17 | 北京金色农华种业科技有限公司 | Production method for hybrid rice seeds Youyou107 |
| CN103404431A (en) * | 2013-08-23 | 2013-11-27 | 云南禾朴农业科技有限公司 | Method for regulating seed production flowering phase of japonica rice |
| CN104170717A (en) * | 2013-12-19 | 2014-12-03 | 天津天隆种业科技有限公司 | Method for improving seed production yield of japonica three-line hybrid rice Longyou1715 |
| CN103782857A (en) * | 2014-01-23 | 2014-05-14 | 胡代书 | Cultivating method and seedling planting method of cross-year regrowing rice seeds |
| CN103782857B (en) * | 2014-01-23 | 2016-10-26 | 胡代书 | A kind of breeding method getting over year recycled water rice and nursery implantation methods |
| CN105557110A (en) * | 2015-12-14 | 2016-05-11 | 安徽省中日农业环保科技有限公司 | Hybrid rice pest and disease prevention planting technology |
| CN107950383A (en) * | 2017-12-08 | 2018-04-24 | 江苏沿海地区农业科学研究所 | A kind of small area producing method for seed of hybrid rice with the different female Combination nova of father |
| CN108849333A (en) * | 2018-06-28 | 2018-11-23 | 定远县鑫理想农业科技有限公司 | A kind of high yield paddy rice planting method |
| CN112042528A (en) * | 2020-10-10 | 2020-12-08 | 上海市农业科学院 | Mechanical powder removing method for hybrid japonica rice |
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Open date: 20100428 |