CN1985576A - Bilinear process of producing early rice hybrid seed - Google Patents
Bilinear process of producing early rice hybrid seed Download PDFInfo
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- CN1985576A CN1985576A CNA2006101096581A CN200610109658A CN1985576A CN 1985576 A CN1985576 A CN 1985576A CN A2006101096581 A CNA2006101096581 A CN A2006101096581A CN 200610109658 A CN200610109658 A CN 200610109658A CN 1985576 A CN1985576 A CN 1985576A
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Abstract
The bilinear process of producing early rice hybrid seed includes: determining three safe periods (safe fertility-sensitive period, safe spiking and flowering period and safe harvesting period), isolating, planting in certain density and line direction, spraying 920 properly, artificial supplementary pollination, rouging, preventing and control diseases and pest, etc. The present invention features that early rice hybrid Luliangyou-996 is bred with the dual purpose nuclear sterile line Lu-18L as female parent and excellent early indica rice breed 996 as the male parent.
Description
(1) technical field
The present invention relates to a kind of method of utilizing two line method to produce the hybrid early seed.Relate in particular to broadcast earlier, broadcast after the male parent, and obtain male parent breeding time the method for high hybrid seed yield under the short situation at female parent.
(2) background technology
The SOYBEAN IN HIGH-YIELD BREEDING of rice district, the middle and lower reach of Yangtze River hybrid early of two season is the hot issue that rice breeding circle is paid close attention to always.For a long time, the seed selection of hybrid early kind has the saying of " excellent and late, early and unexcellent " always.Therefore, cultivate breeding time early, the hybrid early combination that advantage is strong, output is high is the target of breeding man seed selection kind.It is maternal that the present invention adopts the low paddy rice dual-purpose caryon sterile line land 18S of critical temperature of sterility to do, with morning the Xian kind 996 make male parent, be approach production land two excellent 996 crossbreed by two.Two excellent 996 breeding times of land were short, advantage is strong, in the authorization by Hunan Province variety of crops validation board in 2005.
(3) summary of the invention
[goal of the invention]
A kind of production method of hybrid early seed, comprise the sowing father and mother this, when maternal rice bud cut, spray " 920 ".It is characterized in that: it is maternal to utilize the low paddy rice dual-purpose caryon sterile line land 18S of critical temperature of sterility to do, and early Xian kind 996 is made male parent, produces hybrid seed.
[technical scheme]
Safe isolation distance is greater than 300 meters, or staggers with the full heading time of different kind female parent and to carry out the production of hybrid seeds more than 20 days and isolate.Maternal than male parent planting early enough 7 days, if male parent is divided the second phase sowing, then the 1st phase male parent was than maternal late sowing 6 days, and the 1st phase male parent is broadcast back 4 days, broadcasts the 2nd phase male parent.The transplanting row is to being East and West direction; Row is than being 2: 12-14; Maternal transplanting specification is 10 * 16.5cm, between male parent and the female parent on one side at a distance of 20cm, on one side at a distance of 27.0cm, between male parent and the male parent at a distance of 16.5cm.Maternal rice bud cut (seeing fringe) reaches at 30% o'clock, every mu of spray " 920 " 5g, every one day every mu spray " 920 " 7g again.Cut phase and full heading time be 2 smut of control and banded sclerotial blight continuously.The whole growing stage is pulled out outside proterties and land 18S and 996 discrepant plant, and pollination finishes back 18 days results crossbreed seeds.
[beneficial effect]
The present invention compares with existing three-line hybrid rice combination gold excellent 402 has following advantage:
1. output height: per mu yield 500 ∽ 550kg, can increase production about one one-tenth.
2. suit breeding time, economical character and economic characters are good: excellent 402 weak points of ratio gold in time of infertility 1-2 days, and strain is leaf good, the fertilizer resistance anti-lodging big panicle many grains per panicle, the ripening rate height, yield stability is good.
1. wide adaptability: high temperature resistance and low temperature resistant ability are strong, can do two season early rice plantations at middle and lower reach of Yangtze River double rice cropping system.
2. resistance is better: 6 qualification results of country district examination, to hang down about 3 grades to the average rank of rice blast resistance, and resistance obviously is better than Jin You 402.
3. quality is better: both can do edible rice, can do the ground rice rice again, the also suitable forage rice of doing.
(4) embodiment
1, cross breeding seed technology
The present invention adopts two line method approach seeding, with in the past three line method the difference of essence is arranged, and it is that to adopt the low temperature male sterile line to do maternal, can one is dual-purpose (under 20-23 ℃ of condition can selfing protect kind).By safety isolation, proper seeding, rationally plant, suitable row than, regulate the florescence, rationally use " 920 ", artificial supplementary pollination, prevent and treat smut and supplementary measures such as withered line disease and roguing, thereby make the high-purity hybrid seed.Through evidence in 2004, purity can reach more than 98%, and hybrid seed yield is above 250 kilograms/mu.
The seeding technique feature:
1. safety is isolated: space length is greater than 300 meters, or staggers with the full heading time of different kind female parent and to carry out the production of hybrid seeds more than 20 days and isolate.
2. begin sowing in good time: maternal sowing on May 28 to June 20, maternal sowing was broadcast first phase male parent after 6 days, and first phase male parent sowing was broadcast second phase male parent after 4 days.
3. suitable row ratio: the transplanting row is to being East and West direction; Row is than being 2: 12-14; Maternal transplanting specification is 10 * 16.5cm, between male parent and the female parent on one side at a distance of 20cm, on one side at a distance of 27.0cm, between male parent and the male parent at a distance of 16.5cm.
4. use " 920 " technology and artificial supplementary pollination: maternal rice bud cut (seeing fringe) reaches at 30% o'clock, every mu of spray " 920 " 5g, every one day every mu spray " 920 " 7g again.Catch up with pollen to carry out artificial supplementary pollination whole every day at florescence from here fringe of fringe phase beginning.
5. prevent and treat smut and banded sclerotial blight technology: examine mycin (producer's medicine) with go out black spirit (producer's medicine) and Jing Gang and prevent and treat smut and withered line sick 2 times at cut phase and full heading time.
6. the whole growing stage is pulled out outside proterties and land 18S and 996 discrepant plant, and pollination finishes back 18 days results crossbreed seeds.
2, crossbreed culture technique
(1) suitably early sowing: drought is educated floppy disk rice transplanting 18-20 in March day and is sowed, and watery ricenursery was sowed about March 25, rice seedling bed seeding quantity 15g/m
2, 667m
2Land for growing field crops sowing quantity 2-2.5kg, light seeding is even to be broadcast.Every kg seed is mixed the 2g paclobutrazol during sowing.
(2) transplant in good time: suitable floppy disk rice transplanting and seedling balled transplanting, to give full play to low position tiller Cheng Sui, improve the percentage of earbearing tiller.General floppy disk seedling 3.1-3.5 leaf is thrown and is planted, and drought is educated the transplanting of seedling 3.5-4.0 leaf, and water is educated about seedling 4.5 leaves and transplanted.Insert (throwing) basic seedling 8-10 ten thousand for every mu.
(3) rational close planted: general transplanting density 16.5 * 20cm or 13.2 * 23.1cm,, every root and stem of certain plants is inserted 2 paddy seedlings, or every m
2Throwing is planted about 30 root and stem of certain plants.
(4) rational application of fertilizer: medium fertility soil, general 667m
2Produce paddy 500kg, need execute purity nitrogen 10kg, phosphorus pentoxide 6kg, potassium oxide 6.5kg.Take to use sufficient base manure, spraying fertilizer is early executed the fertilizing method of ear manuer, every 667m when promptly harrowing a field ingeniously
2Execute 25% paddy rice compound fertilizer special 50kg; Combination in 5-7 days is used weed killer herbicide and is imposed urea 7-10kg again after planting, and executes potassium chloride 6-7kg booting stage.
(5) science Guan Shui: urge to tiller between dried wetting phase tillering stage, as every 667m
2Total seedling number reaches at 250,000 o'clock, the dry field that in time falls into water, and keep field face that water layer arranged based on wet booting stage, keeps heading stage the field that shallow water is arranged, and the pustulation period is done wet strong seed based on profit, keeps the root system vigor, must guard against dehydration too early, in case early ageing and influence rice matter.
(6) diseases and pests controlling: adhere to the strong chlorine oil seed soaking, prevent the generation of seed-borne fungi diseases such as bakanae disease.Field period forecasts according to sick worm, damage by disease and insect such as the control of dispenser in time striped rice borer, rice leaf roller, rice fulgorid, banded sclerotial blight.
Claims (7)
1, a kind of production method of hybrid early seed, comprise the sowing father and mother this, when maternal rice bud cut, spray " 920 ".It is characterized in that: it is maternal to utilize the low paddy rice dual-purpose caryon sterile line land 18S of critical temperature of sterility to do, and early Xian kind 996 is made male parent, produces hybrid seed.
2, method according to claim 1 is characterized in that safe isolation distance greater than 300 meters, or staggers with the full heading time of different kind female parent and to carry out the production of hybrid seeds more than 20 days and isolate.
3, method according to claim 1, maternal than male parent planting early enough 7 days, if male parent is divided the second phase sowing, then the 1st phase male parent was than maternal late sowing 6 days, and the 1st phase male parent is broadcast back 4 days, broadcasts the 2nd phase male parent.
4, method according to claim 1 is characterized in that the transplanting row is to being East and West direction; Row is than being 2: 12-14; Maternal transplanting specification is 10 * 16.5cm, between male parent and the female parent on one side at a distance of 20cm, on one side at a distance of 27.0cm, between male parent and the male parent at a distance of 16.5cm.
5, method according to claim 1 is characterized in that maternal rice bud cut (seeing fringe) reaches at 30% o'clock, every mu of spray " 920 " 5g, every one day every mu spray " 920 " 7g again.
6, method according to claim 1 is characterized in that cut phase and full heading time 2 smut of control and banded sclerotial blight continuously.
7, method according to claim 1 is characterized in that the whole growing stage pulls out outside proterties and land 18S and 996 discrepant plant, and pollination finishes back 18 days results crossbreed seeds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101096581A CN100490634C (en) | 2006-08-15 | 2006-08-15 | Bilinear process of producing early rice hybrid seed |
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| CNB2006101096581A CN100490634C (en) | 2006-08-15 | 2006-08-15 | Bilinear process of producing early rice hybrid seed |
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| CN1985576A true CN1985576A (en) | 2007-06-27 |
| CN100490634C CN100490634C (en) | 2009-05-27 |
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| CNB2006101096581A Expired - Fee Related CN100490634C (en) | 2006-08-15 | 2006-08-15 | Bilinear process of producing early rice hybrid seed |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103477971A (en) * | 2013-09-03 | 2014-01-01 | 安徽理想种业有限公司 | Breeding method of rice sterile line |
| CN105706913A (en) * | 2016-03-09 | 2016-06-29 | 福建农林大学 | Breeding method of forage-use dry rice dual-purpose genic male sterility line |
-
2006
- 2006-08-15 CN CNB2006101096581A patent/CN100490634C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103477971A (en) * | 2013-09-03 | 2014-01-01 | 安徽理想种业有限公司 | Breeding method of rice sterile line |
| CN105706913A (en) * | 2016-03-09 | 2016-06-29 | 福建农林大学 | Breeding method of forage-use dry rice dual-purpose genic male sterility line |
| CN105706913B (en) * | 2016-03-09 | 2018-01-12 | 福建农林大学 | A kind of selection of feeding upland rice two-line sterile line |
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| CN100490634C (en) | 2009-05-27 |
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Granted publication date: 20090527 |