CN104663422A - Hybrid rice seed production method - Google Patents
Hybrid rice seed production method Download PDFInfo
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- CN104663422A CN104663422A CN201510061275.0A CN201510061275A CN104663422A CN 104663422 A CN104663422 A CN 104663422A CN 201510061275 A CN201510061275 A CN 201510061275A CN 104663422 A CN104663422 A CN 104663422A
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Abstract
The invention discloses a hybrid rice seed product method. The hybrid rice seed product method comprises the following steps: (1) selecting high-quality two-line photo-thermo sensitive genic sterile male line Guangxuan S as a female parent, and selecting an indica-japonica hybridized wide compatibility restorer line Guanghui 499 bred through self-parent convergent cross as a male parent; (2) raising rice seedlings, namely, carrying out two-stage rice seedling raising on the male parent, wherein seedling age in a first stage is controlled to be within 7 days, and 13cm*13cm single plant deposit transplanting is adopted in the first stage and a second stage, and 13cm*10cm double plant deposit transplanting is adopted in a three stage; and the female parent is in wetness-raised seedling, a medicament is adopted for soaking seeds, sparse seeding and uniform seeding are adopted, short seedlings are cultivated, seedling transplanting age of the female parent is 22 days, and the female parent is transplanted before 6.0 leaves grow; (3) transplanting according to the specifications that bed width of a seed field is 2.0-2.1m and the male parent and the female parent are transplanted in a row ratio of 1 to (12-14) in each bed; (4) carrying out nutrient and water management; (5) predicting and adjusting a flowering period, wherein a flower meeting standard is that the female parent and the male parent are eared at the same time or the female parent is eared 1-2 days earlier than the male parent, and meeting of the female parent and the male parent in a full blooming period is guaranteed to the utmost extent; and (6) preventing impurities.
Description
Technical field:
The present invention relates to the producing method for seed of a kind of hybrid rice, belong to agricultural technology field.
Background technology:
Hybrid rice is produced by different seed rice phase mutual cross, dependence be maternal and its two objects, i.e. " three are " (male sterile line, maintainer and restorer).Production will be planted one piece of breeding field and one piece of seed farm; breeding field plantation male sterile line and maintainer; when they are all bloomed time; maintainer sends pollen to male sterile line by means of media such as wind, worm, water, birds; it is solid that male sterile line obtains normal pollen; the offspring produced remains male sterile line, reaches breeding male sterile lines object.The male-sterile seed that breeding can come by we, retain a part and continue breeding the coming year, another part is then with the restorer production of hybrid seeds, when the male sterile line of seed farm and restorer are all bloomed time, the pollen of restorer sends male sterile line to, the offspring that male sterile line produces, is just to provide the hybrid rice seed of field planting.
Existing hybrid rice mainly solves a difficult problem for high yield, but the problem of ubiquity rice quality difference.Along with the living standard of people improves day by day, meal of having enough can not satisfy the demands of consumers, and therefore seed selection high-quality rice variety is brought into schedule, becomes a research focus of current rice science men.And conventional rice quality better but yield poorly, therefore not only high yield but also high-quality are conventional Rice and existing hybrid rice breeding all open questions.
Summary of the invention:
The present invention seeks to, be used for making up the deficiencies in the prior art, and the producing method for seed of a kind of hybrid rice is provided.
To achieve these goals, technical scheme of the present invention is as follows:
A producing method for seed for hybrid rice, comprises following step:
(1) selection of maternal and male parent: be that photo-thermo-sensitive genic male sterile line extensively selects S to be female parent by high-quality two extensive 499 is extensively male parent from the Xian round-grained rice friendship wide-congenial restoring line of parent's convergent cross seed selection;
(2) seedling: male parent adopts two sections of seedling, the 1st period of length of time rice seedlings grow controls within 7d, and the 1st and the 2nd phase 13cm × 13cm individual plant posts cultivation, and cultivation is posted in the two strain of the 3rd phase 13cm × 10cm, individual plant band tiller 8 ~ 10 when striving for field-transplanting; Male parent late May or early June plant; Maternal water-raised seedling, land for growing field crops sowing quantity 30 ~ 34kg/hm2, rice seedling bed seeding quantity 150 ~ 225kg/hm2, adopt Medicament soaked seed, light seeding, evenly to broadcast, and cultivates short shape seedling, maternally transplants length of time rice seedlings grow 22d, and it is complete to plant team before 6.0 leaves;
(3) plant specification: the wide 2.0 ~ 2.1m in seed farm railway carriage or compartment, every railway carriage or compartment parental is planted by 1:12 ~ 14; In male parent row, 3 phase male parents are planted by 3:4:3 is alternate, spacing in the rows 17cm, with maternal line-spacing 17cm; Maternal Planting Densities 13cm × 13 ~ 15cm, twoly originally plants;
(4) rich water quality management: land for growing field crops requires to use sufficient base manure, topdress in time, male parent transplants the timely deep placement ball fertilizer of rear 5 ~ 7d, Guan Shui accomplishes that shallow water urgees tiller, and interval puts field, seedling foot dry field, enter cun water booting of ear differentiation after date field to grow flower, later stage dry wet strong seed, starts to put field when the total seedling number of female parent reaches 80% of plan spike number, terminates to the ear differentiation III phase;
(5) prediction of flowering period and adjustment: flower chance standard is the Parent heading same period or female early father 1 ~ 2d heading, strive that Parent is contained flower and met, shelled by leaf age contrast and young fringe and the method such as to look into and carry out prediction of flowering period, criterion is the Parent same period in early stage or maternal slightly morning, and balanced growth is until heading;
(6) anti-assorted: strictly to isolate, space isolation is not less than 500m, and the time is isolated in more than 20d, and not in the glutinous rice zone production of hybrid seeds, yellow maturity is gathered in, and dries in time and raises only, guarantee that seed color and luster, germination rate, moisture and cleanliness are up to standard, prevent mechanical admixture.
The producing method for seed of described a kind of hybrid rice, the medicament adopted in described step (2) is strong chlorine oil.
The producing method for seed of described a kind of hybrid rice, in step (4), institute fertilise N, P, K usage ratio is 2.0:1.0:1.5,
The producing method for seed of described a kind of hybrid rice, when female parent extensively selects S to see fringe 5%, 20%, 50%, spray " 92 O " 3 times, ratio is 1:3:2, and Parent is with spray, and total consumption is advisable with 330 ~ 375g/hm2, sets up rational fringe Rotating fields.
Beneficial effect of the present invention is as follows:
The rice per mu yield 588.39kg-599.1kg that producing method for seed of the present invention obtains, plant type is loose moderate, the large grain of large fringe, stem stalk is sturdy, leaf look pale green, and sword-like leave is report slightly, leaf sheath, auricle, pulvinus, column cap, grain husk point colourless, tillering ability is medium, grow delicate and pretty, yielding ability, yield stability and later stage annesl are good, fertilizer resistance anti-lodging.And after testing, Coarse Rice Rate 80.8%, polished rice rate 72.9%, head milled rice 534%, grain length 6.8mm, aspect ratio 3.0, chalk rice rate 30%, chalkiness degree 2.5%, transparency 2 grades, caustic SCC 5.2 grades, gel consistence 82mm, amylose 15.0%, albumen quality content 8.7%; Bacterial leaf-blight shows as disease-resistant (3 grades), during rice blast shows as anti-(5 grades).
Embodiment:
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.
Embodiment 1
A producing method for seed for hybrid rice, comprises following step:
(1) selection of maternal and male parent: female parent extensively select S Fertility al-teration sensitive periods (ear differentiation III ~ VII phase) not occur continuous 3d daily mean temperature is lower than 230C and the daily minimal tcmperature microthermal climate lower than 200C.The In Middle And Lower Reaches of Changjiang River production of hybrid seeds is arranged in heading stage was advisable August 12 ~ 18.In the Anhui regional production of hybrid seeds in south, male parent arranges the sowing of 3 phases, sowing on the 1st April 26 phase, each issue interval 7 ~ 8d; Seed production florescence is advisable with female parent male parent 1 ~ 2d morning, Parent sowing gap stage 32 ± 1d, and leaf differs from 7.3 ± 0.1 leaves, and maternal date of seeding is tentatively determined May 31 to June 1, specifically depending on male parent growing state;
(2) seedling: male parent adopts two sections of seedling, the 1st period of length of time rice seedlings grow controls within 7d, and the 1st and the 2nd phase 13cm × 13cm individual plant posts cultivation, and cultivation is posted in the two strain of the 3rd phase 13cm × 10cm, individual plant band tiller 8 ~ 10 when striving for field-transplanting; Male parent late May or early June plant; Maternal water-raised seedling, land for growing field crops sowing quantity 30 ~ 34kg/hm2, rice seedling bed seeding quantity 150 ~ 225kg/hm2, adopt Medicament soaked seed, light seeding, evenly to broadcast, and cultivates short shape seedling, maternally transplants length of time rice seedlings grow 22d, and it is complete to plant team before 6.0 leaves; Rice seedling bed attention control rice thrips, Lissorhoptrus oryzophilus Kuschel and snout moth's larva etc.
(3) plant specification: the wide 2.0 ~ 2.1m in seed farm railway carriage or compartment, every railway carriage or compartment parental is planted by 1:12 ~ 14; In male parent row, 3 phase male parents are planted by 3:4:3 is alternate, spacing in the rows 17cm, with maternal line-spacing 17cm; Maternal Planting Densities 13cm × 13 ~ 15cm, twoly originally plants;
(4) rich water quality management: land for growing field crops requires to use sufficient base manure, and topdress in time, take the circumstances into consideration to execute fringe granulated fertilizer, N, P, K usage ratio is 2.0:1.0:1.5, notes the use of micro-fertilizer and fertilizer simultaneously.Male parent transplants the timely deep placement ball fertilizer of rear 5 ~ 7d.Guan Shui accomplishes that shallow water urgees tiller, and interval puts field, seedling foot dry field.Enter cun water booting of ear differentiation after date field to grow flower, later stage dry wet strong seed.Emphasis is done a good job of it mid-term and is put field, adhere to that seedling arrives when not waiting, time to the principle of the seedling such as not.When the total seedling number of female parent reach plan spike number 80% time (or before 10 leaves) start to put field, terminate to the ear differentiation III phase;
(5) prediction of flowering period and adjustment: flower chance standard is the Parent heading same period or female early father 1 ~ 2d heading, strive that Parent is contained flower and met, shelled by leaf age contrast and young fringe and the method such as to look into and carry out prediction of flowering period, criterion is the Parent same period in early stage or maternal slightly morning, and balanced growth is until heading;
(6) spray " 92 O " and improve outcrossing seed-setting rate: when female parent extensively selects S to see fringe 5%, 20%, 50%, spray " 92 O " 3 times, ratio is 1:3:2, Parent is with spray, and total consumption is advisable with 330 ~ 375g/hm2, sets up rational fringe Rotating fields.Female parent appropriateness can scotch leaf or does not cut leaf, and cleaning female parent is pollinated obstacle.Adhering to grows flower with " 92 O " protects flower, keeps maternal stigma vigour.Manually catch up with powder in time on male parent loose powder peak, catch up with powder every day 3 ~ 4 times.
(7) anti-assorted: strictly to isolate, space isolation is not less than 500m, and the time is isolated in more than 20d, not in the glutinous rice zone production of hybrid seeds.Improve cultivation management level, cultivate the maternal colony of the much higher fringe large spike of regularity, suppress the little generation of tillering of a tardy high position.Strict impurity elimination, remove the different kind in field and variant in time, require that the full field of male parent is without hybrid strain, maternal hybrid strain rate controls below 0.05%.Yellow maturity is gathered in, and dries in time and raises only, guarantee that seed color and luster, germination rate, moisture and cleanliness are up to standard, prevent mechanical admixture.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (4)
1. a producing method for seed for hybrid rice, is characterized in that, comprises following step:
(1) selection of maternal and male parent: be that photo-thermo-sensitive genic male sterile line extensively selects S to be female parent by high-quality two extensive 499 is extensively male parent from the Xian round-grained rice friendship wide-congenial restoring line of parent's convergent cross seed selection;
(2) seedling: male parent adopts two sections of seedling, the 1st period of length of time rice seedlings grow controls within 7d, and the 1st and the 2nd phase 13cm × 13cm individual plant posts cultivation, and cultivation is posted in the two strain of the 3rd phase 13cm × 10cm, individual plant band tiller 8 ~ 10 when striving for field-transplanting; Male parent late May or early June plant; Maternal water-raised seedling, land for growing field crops sowing quantity 30 ~ 34kg/hm2, rice seedling bed seeding quantity 150 ~ 225kg/hm2, adopt Medicament soaked seed, light seeding, evenly to broadcast, and cultivates short shape seedling, maternally transplants length of time rice seedlings grow 22d, and it is complete to plant team before 6.0 leaves;
(3) plant specification: the wide 2.0 ~ 2.1m in seed farm railway carriage or compartment, every railway carriage or compartment parental is planted by 1:12 ~ 14; In male parent row, 3 phase male parents are planted by 3:4:3 is alternate, spacing in the rows 17cm, with maternal line-spacing 17cm; Maternal Planting Densities 13cm × 13 ~ 15cm, twoly originally plants;
(4) rich water quality management: land for growing field crops requires to use sufficient base manure, topdress in time, male parent transplants the timely deep placement ball fertilizer of rear 5 ~ 7d, Guan Shui accomplishes that shallow water urgees tiller, and interval puts field, seedling foot dry field, enter cun water booting of ear differentiation after date field to grow flower, later stage dry wet strong seed, starts to put field when the total seedling number of female parent reaches 80% of plan spike number, terminates to the ear differentiation III phase;
(5) prediction of flowering period and adjustment: flower chance standard is the Parent heading same period or female early father 1 ~ 2d heading, strive that Parent is contained flower and met, shelled by leaf age contrast and young fringe and the method such as to look into and carry out prediction of flowering period, criterion is the Parent same period in early stage or maternal slightly morning, and balanced growth is until heading;
(6) anti-assorted: strictly to isolate, space isolation is not less than 500m, and the time is isolated in more than 20d, and not in the glutinous rice zone production of hybrid seeds, yellow maturity is gathered in, and dries in time and raises only, guarantee that seed color and luster, germination rate, moisture and cleanliness are up to standard, prevent mechanical admixture.
2. the producing method for seed of a kind of hybrid rice according to claim 1, is characterized in that, the medicament adopted in described step (2) is strong chlorine oil.
3. the producing method for seed of a kind of hybrid rice according to claim 1, is characterized in that, in step (4), institute fertilise N, P, K usage ratio is 2.0:1.0:1.5.
4. the producing method for seed of a kind of hybrid rice according to claim 1, is characterized in that, when female parent extensively selects S to see fringe 5%, 20%, 50%, spray " 92 O " 3 times, ratio is 1:3:2, and Parent is with spray, total consumption is advisable with 330 ~ 375g/hm2, sets up rational fringe Rotating fields.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104871957A (en) * | 2015-06-08 | 2015-09-02 | 山西省农业科学院棉花研究所 | Wheat chemical emasculation three-stage combined seed production method |
| CN105961193A (en) * | 2016-06-30 | 2016-09-28 | 安徽金培因科技有限公司 | Method for producing two-line rice hybrid seeds in asynchronous flowering period |
| JP2017023031A (en) * | 2015-07-21 | 2017-02-02 | 株式会社水稲生産技術研究所 | Cultivation method for hybrid rice seed production |
| CN107646669A (en) * | 2017-09-12 | 2018-02-02 | 浙江科诚种业股份有限公司 | A kind of producing method for seed and breeding method of Medium Indica Hybrid Rice combination rice |
| CN109691368A (en) * | 2018-12-18 | 2019-04-30 | 西南科技大学 | A kind of method of crossbreeding rice |
| CN110447530A (en) * | 2019-09-05 | 2019-11-15 | 中国水稻研究所 | A kind of selection of pale green leaf CMS line, Xian round-grained rice osculant restorer and ideotype breeding |
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| CN102948363A (en) * | 2012-10-26 | 2013-03-06 | 袁隆平农业高科技股份有限公司 | Seed production method for hybrid rice |
| CN103988773A (en) * | 2014-05-21 | 2014-08-20 | 徐州生物工程职业技术学院 | Seed production method of 6-liang optimal No. 2 hybrid middle-season indica rice combination |
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Patent Citations (3)
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| JPH08289686A (en) * | 1995-04-21 | 1996-11-05 | Mitsui Toatsu Chem Inc | Production of rice f1 hybrid seed |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104871957A (en) * | 2015-06-08 | 2015-09-02 | 山西省农业科学院棉花研究所 | Wheat chemical emasculation three-stage combined seed production method |
| CN104871957B (en) * | 2015-06-08 | 2017-07-14 | 山西省农业科学院棉花研究所 | Wheat chemical emasculation three-level combines producing method for seed |
| JP2017023031A (en) * | 2015-07-21 | 2017-02-02 | 株式会社水稲生産技術研究所 | Cultivation method for hybrid rice seed production |
| CN105961193A (en) * | 2016-06-30 | 2016-09-28 | 安徽金培因科技有限公司 | Method for producing two-line rice hybrid seeds in asynchronous flowering period |
| CN107646669A (en) * | 2017-09-12 | 2018-02-02 | 浙江科诚种业股份有限公司 | A kind of producing method for seed and breeding method of Medium Indica Hybrid Rice combination rice |
| CN109691368A (en) * | 2018-12-18 | 2019-04-30 | 西南科技大学 | A kind of method of crossbreeding rice |
| CN109691368B (en) * | 2018-12-18 | 2022-02-11 | 西南科技大学 | Method for breeding seeds of hybrid rice |
| CN110447530A (en) * | 2019-09-05 | 2019-11-15 | 中国水稻研究所 | A kind of selection of pale green leaf CMS line, Xian round-grained rice osculant restorer and ideotype breeding |
| CN110447530B (en) * | 2019-09-05 | 2021-01-08 | 中国水稻研究所 | Breeding method of light green leaf three-line sterile line, indica-japonica intermediate restorer line and indica-japonica subspecies hybrid rice |
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| CN104663422B (en) | 2016-12-07 |
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