CN1082811A - Utilize low temperature to castrate the method for preparation indica-japonica hybrid rice - Google Patents
Utilize low temperature to castrate the method for preparation indica-japonica hybrid rice Download PDFInfo
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- CN1082811A CN1082811A CN 92107067 CN92107067A CN1082811A CN 1082811 A CN1082811 A CN 1082811A CN 92107067 CN92107067 CN 92107067 CN 92107067 A CN92107067 A CN 92107067A CN 1082811 A CN1082811 A CN 1082811A
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- rice
- japonica
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- indica
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Abstract
The present invention relates to a kind of method of utilizing natural low temperature to castrate preparation indica-japonica hybrid rice, with the long-grained nonglutinous rice is maternal, with wide affine japonica rice is male parent, by selecting production of hybrid seeds ground, regulate sowing time, the daily mean temperature that makes this heading of father and mother flowering stage of alternate plantation is about 20 ℃, causes long-grained nonglutinous rice male sterile, japonica rice can educate, and indica-japonica hybrid obtains the inter-subspecies hybrid seed.Application the present invention need not recover is, production of hybrid seeds program is simple, and cost is low, helps the more strong excellent combination of preparation.
Description
The present invention relates to a kind of method of preparing the indica-japonica hybrid rice, promptly two line method is produced the method for paddy rice inter-subspecies hybrid seed.
Hybrid rice is spread wide in China and each rice producing region, the world, and obtained huge economic benefit, as everyone knows, this affiliation of paddy rice father and mother is far away more, then hybrid vigour is strong more, therefore how to utilize the hybrid vigour between the paddy rice indica and japonica subspecies to become the important topic that breeding men are studied.Because affiliation is far away more, then compatibility is poor more, therefore prepares strong excellent hybrid combination, is not an easy thing.In recent years, some breeding units of China, seed selection some wide affine japonica rice varieties, for bright prospects have been opened up in the utilization of indica-japonica heterosis.The Indica-Japonica Hybrid Rice combination of being prepared at present is still continues to use " three line method " producing method for seed preparing hybrid generation seed commonly used, production of hybrid seeds program complexity, and in fact the cost height, does not also have indica-japonica hybrid to be applied to produce at present.
The object of the present invention is to provide a kind of method of utilizing natural low temperature to castrate preparation indica-japonica hybrid rice, utilize this method not need maintenance line, belong to the two line method production of hybrid seeds, thereby production of hybrid seeds program province, cost is low, is easy to make strong excellent combination for production application.
Realize that principle of the present invention and method are as follows: utilize long-grained nonglutinous rice in daily mean temperature male sterile below 22 ℃, gynoecium can be educated, and japonica rice then is in male sterile below 20 ℃, can educate more than 20 ℃.Therefore, by selecting a specific production of hybrid seeds area, the daily mean temperature of this area must have more than 15 days and maintains about 20 ℃.The area of having chosen at present is area, Kunming, Yunnan, this area's daily mean temperature in 7～August is about 20 ℃, thereby then male sterile of kind long-grained nonglutinous rice, planting japonica rice then can educate, it is the desirable place of preparation Indica-Japonica Hybrid Rice, with this class area, Kunming is production of hybrid seeds ground, is maternal with the long-grained nonglutinous rice, and wide affine japonica rice is male parent, this alternate plantation of father and mother, by regulating father and mother's sowing time originally, make its flower synchronization, and the heading flowering stage is in daily mean temperature about 20 ℃, in Kunming is 7～August, during this period of time, paternal pollen is awarded female parent, outcrossing and obtain the Hybrids of Indica and Japonica seed.
Advantage of the present invention is: 1) Indica-Japonica Hybrid Rice is stronger than the advantage of hybridization long-grained nonglutinous rice and Japonica Hybrid; 2) use the two line method production of hybrid seeds, program is simple, and cost is low; 3) because this class area temperature in 7～August of Kunming is low, the kind long-grained nonglutinous rice is sterile, thereby the seed production purity height.The present invention has opened up bright prospects for the utilization of subspecies indica and japonica hybrid advantage.
Embodiment with mean temperature of air continuous more than 15 days be area about 20 ℃ bright cloudlike Nanning-Kunming be production of hybrid seeds ground, with long-grained nonglutinous rice bright extensive 63 is female parent, and wide affine japonica rice 02428 is male parent, alternate plantation, female parent was sowed in early April, male parent was sowed the first tenday period of a month in May, every kind 1 capable male parent, and a kind is counted the row female parent, father and mother are originally in flower synchronization in 7～August, be aided with and manually catch up with powder, make paternal pollen pass to female parent, outcrossing and obtain bright extensive 63 and 02428 first-filial generation seed.
Claims (3)
1, a kind of method of utilizing low temperature to castrate preparation indica-japonica hybrid rice, it is characterized in that, with the long-grained nonglutinous rice is maternal, is male parent with wide affine japonica rice, by selecting production of hybrid seeds ground and regulating sowing time, this heading of father and mother flowering stage is under 20 ℃ of left and right sides conditions of daily mean temperature, cause maternal male sterile, gynoecium can be educated, the male parent male-fertile, male parent is pollinated to female parent, outcrossing and obtain the indica-japonica hybrid rice.
2, the method for preparation indica-japonica hybrid rice according to claim 1 is characterized in that, areas such as selection Kunming, Yunnan are production of hybrid seeds ground, regulate this sowing time of father and mother, make its flowering of earing in 7～August.
3, according to claim 1 and 2 described methods, it is characterized in that long-grained nonglutinous rice is arbitrary kind, and japonica rice is wide affine kind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92107067A CN1035353C (en) | 1992-07-23 | 1992-07-23 | Low-temp castration process for making up seeds of hybridisation rice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92107067A CN1035353C (en) | 1992-07-23 | 1992-07-23 | Low-temp castration process for making up seeds of hybridisation rice |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1082811A true CN1082811A (en) | 1994-03-02 |
| CN1035353C CN1035353C (en) | 1997-07-09 |
Family
ID=4942632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92107067A Expired - Fee Related CN1035353C (en) | 1992-07-23 | 1992-07-23 | Low-temp castration process for making up seeds of hybridisation rice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035353C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102870614A (en) * | 2012-07-25 | 2013-01-16 | 乌鲁木齐余粮玉农业技术有限公司 | Corn yield increasing method by retarding normal growth of male tassels of corn |
| CN104429932A (en) * | 2015-01-04 | 2015-03-25 | 王开 | Novel indica-japonica hybrid gene introgression sheath blight resistance breeding method |
| CN104521758A (en) * | 2015-01-04 | 2015-04-22 | 安徽袁粮水稻产业有限公司 | New breeding method for resisting rice blast through indica-japonica hybrid gene introgression |
| CN104521744A (en) * | 2015-01-04 | 2015-04-22 | 黎建波 | New bacterial-blight-resisting japonica rice breeding method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1028471C (en) * | 1990-07-17 | 1995-05-24 | 邓祚荣 | Two system method crossbreeding technology for long-grained nonglutinous rice subspecised |
-
1992
- 1992-07-23 CN CN92107067A patent/CN1035353C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102870614A (en) * | 2012-07-25 | 2013-01-16 | 乌鲁木齐余粮玉农业技术有限公司 | Corn yield increasing method by retarding normal growth of male tassels of corn |
| CN104429932A (en) * | 2015-01-04 | 2015-03-25 | 王开 | Novel indica-japonica hybrid gene introgression sheath blight resistance breeding method |
| CN104521758A (en) * | 2015-01-04 | 2015-04-22 | 安徽袁粮水稻产业有限公司 | New breeding method for resisting rice blast through indica-japonica hybrid gene introgression |
| CN104521744A (en) * | 2015-01-04 | 2015-04-22 | 黎建波 | New bacterial-blight-resisting japonica rice breeding method |
| CN104521758B (en) * | 2015-01-04 | 2017-03-29 | 安徽袁粮水稻产业有限公司 | A kind of Xian Jing hand over gene introgression blast resisting breeding new method |
| CN104521744B (en) * | 2015-01-04 | 2017-06-13 | 浙江原态农业股份有限公司 | A kind of bacterial leaf spot resistance Japonica two line hybrid rice method |
| CN104429932B (en) * | 2015-01-04 | 2017-06-20 | 兰进好 | A kind of Xian round-grained rice hands over the anti-banded sclerotial blight breeding new method of gene introgression |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1035353C (en) | 1997-07-09 |
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| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |