CN104335890A - Cultivation method of two-line hybrid water-saving and drought-resistant rice - Google Patents
Cultivation method of two-line hybrid water-saving and drought-resistant rice Download PDFInfo
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Abstract
The invention relates to a cultivation method of two-line hybrid water-saving and drought-resistant rice, and relates to the technical field of rice variety cultivation methods. According to the invention, first, a drought-resistant two-line sterile line and a drought-resistant restoring line are cultivated; and then the water-saving and drought-resistant high-advantage hybrid variety is further cultivated. The indica (non-glutinous) hybrid rice variety is planted in farmlands without irrigation facilities, and can grow normally and gain relatively high yield with natural rainfall. Therefore, technical bottlenecks of high water resource consumption of paddy rice and low yield of upland rice are solved.
Description
Technical field
The present invention relates to the breeding method technical field of rice varieties, be specifically related to the breeding method of a kind of two line method hybridization saving water, resisting drought rice.
Background technology
In recent years along with the change of global climate, climate calamity often occurs, and the natural calamities such as arid, flood occur every year in various degree. and China is the country of a serious water shortage that water resource is the poorest per capita, and long-term non-irrigated Disaster Area reaches 10% ~ 30%; Especially big famine year, Disaster Area reached 20% ~ 35%.
Improve the efficiency of water application of crops, realize Biological Water Saving in Agriculture, the ecological crops of saving water, resisting drought cultivating low-consumption high-efficiency, for alleviation water resources crisis, ensure that China's grain security, ecological safety and social sustainable development are significant.
Paddy is the staple food grain of China.Rice Production irreplaceable status in Chinese agriculture is produced by grain structures shape of this national characteristic.But in the agricultural water that China is whole, Rice Cropping occupies nearly seventy percent.Therefore, the outlet of water-saving agriculture essence is exactly select the seed rice integrating saving water, resisting drought, better quality, superior resistance.
Summary of the invention
Technical problem to be solved by this invention is the breeding method of the two line method hybridization saving water, resisting drought rice providing a kind of saving water, resisting drought.
Technical problem to be solved by this invention realizes by the following technical solutions:
The breeding method of a kind of two line method hybridization saving water, resisting drought rice, first drought-enduring two-line sterile line and drought-enduring restorer is cultivated, and then cultivate the drought-enduring strong advantage Hybrid of water saving, this Xian (round-grained rice) Hybrid Rice Varieties is planted not having the arable land of irrigating facility, rely on natural precipitation, also can obtain higher output by normal growth, solve Rice Production at substantial water resource, the technical bottleneck problem that upland rice yields poorly.
The present invention utilizes seven kinds of cultivation means, and cultivate two line method saving water, resisting drought rice, it is embodied in:
The first scheme is:
With upland rice and paddy rice for parents, carry out Extreme drought at segregative generation and coerce screening, constantly isozygoty, be finally bred as Drought hardiness strong, the drought-enduring restorer that coordinate force is good;
First scheme is:
The good two-line sterile line of rice of Comprehensive Traits is selected to be maternal, yield traits is good, the upland rice that drought-resistance ability is strong is paternal hybrid, segregative generation is under Extreme drought is coerced, selection Drought hardiness is strong, has the seed of the individual plant of two-line sterile line good characteristic, constantly isozygotys, coerce screening, be finally bred as indica type drought-enduring two-line sterile line;
The third scheme is:
Select drought-enduring two-line sterile line for maternal, drought-enduring recovery is male parent, and preparing hybrid combines, and under arid situation, selects Drought hardiness strong, and yield heterosis indica type two is significantly saving water, resisting drought rice varieties;
4th kind of scheme is:
The Japonica rice two-line sterile line selecting Comprehensive Traits good is acceptor, by transgene method, drought-enduring for outer rim genetic material is imported to paddy rice bridge formation system, again by the method for sexual hybridization, drought-enduring genetic material is imported in two-line sterile line and goes, coerce screening through indoor detection and field, be finally bred as the drought-enduring two-line sterile line of round-grained rice type;
5th kind of scheme is:
With drought-enduring two-line sterile line for female parent, the disease-resistant rice varieties of high yield and high quality is male parent, and preparing hybrid combines, and under arid situation, selects Drought hardiness strong, and yield heterosis indica type two is significantly saving water, resisting drought rice varieties;
6th kind of scheme is:
Take two-line sterile line of rice as female parent, drought-enduring recovery is the combination of male parent preparing hybrid, under arid situation, selects Drought hardiness strong, and yield heterosis indica type two is significantly saving water, resisting drought rice varieties;
7th kind of scheme is:
With the drought-enduring two-line sterile line of round-grained rice type for female parent, round-grained rice type upland rice or Japonica rice are male parent, and preparing hybrid combines, and under arid situation, select Drought hardiness strong, the obvious round-grained rice type two of yield heterosis is saving water, resisting drought rice varieties;
The kind that the present invention uses belongs to grass family Oryza common cultivation seed rice in botany classification, and Latin name is called: Oryza sativa L.
The invention has the beneficial effects as follows:
1) can plant not having the middle-and-low-yielding fields of water conservancy projects, improving the crop yield that these are ploughed greatly;
2) than rice water-saving more than 50%;
3) enhance productivity, reduce social cost.
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.
First the present invention cultivates drought-enduring two-line sterile line and drought-enduring restorer, and then cultivate the drought-enduring strong advantage Hybrid of water saving, this Xian (round-grained rice) Hybrid Rice Varieties is planted not having the arable land of irrigating facility, rely on natural precipitation, also can obtain higher output by normal growth, solve Rice Production at substantial water resource, the technical bottleneck problem that upland rice yields poorly.
Embodiment 1: cultivate drought-enduring restorer
Selection drought-resistance ability is strong, precocious, but the Brazil Upland Rice yielded poorly is for maternal, and yielding ability is better but drought susceptible rice varieties 118B is paternal hybrid, coerced continuously through 11 years and select and isozygoty, be bred as KH041, showed drought-enduring, precocity, high yield. the results are shown in Table 1, table 2.
Table 1KH041 seed selection pedigree
Table 2.KH041 economic characters investigation table 2008.4 Sanya, Hainan
Embodiment 2: with the green 102S of two-line sterile line of rice for female parent, green non-irrigated No. one of upland rice variety is male parent, and being bred as drought-enduring indica type two is combination, shows drought-enduring, precocious, high yield.
Concrete outcome see table 3, table 4
The green non-irrigated two excellent No. 1 seed selection pedigrees of table 3
Table 4, green non-irrigated two excellent No. 1 economic characters investigation table 2012.10 Hefei
Embodiment 3: cultivate indica type drought-enduring two-line sterile line
The good green 102S of two-line sterile line of rice of Comprehensive Traits is selected to be maternal, yield traits is good, in the upland rice variety that drought-resistance ability is strong, drought 390 is paternal hybrid, segregative generation is under Extreme drought is coerced, selection Drought hardiness is strong, has the seed of the individual plant of two-line sterile line good characteristic, constantly isozygotys, coerce screening, be finally bred as indica type drought-enduring two-line sterile line.
Concrete outcome see table 5, table 6
The drought-enduring indica type two-line sterile line KH535S seed selection pedigree of table 5
Table 6, Lingshui, KH535S economic characters investigation table 2012.4 Hainan
Embodiment 4: cultivate the drought-enduring two-line sterile line of round-grained rice type
The drought-enduring genetic material EDT1 of arabidopsis imported in paddy rice spend in 11 by transgene method and go to produce system (2-56) of building bridge, again with paddy rice 2312S, 2304S etc. are maternal, pass through sexual hybridization, the method backcrossed, imported to by drought-enduring genetic material in round-grained rice type two-line sterile line and go, segregative generation Extreme drought screens, and has been bred as drought resisting round-grained rice type two-line sterile line KH12S.
Concrete outcome see table 7, table 8
Table 7KH105S seed selection pedigree
Table 8, KH105S economic characters investigation table 2012.4 Sanya, Hainan
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 (8)
1. the breeding method of a two line method hybridization upland rice, it is characterized in that: first cultivate drought-enduring two-line sterile line and drought-enduring restorer, then by drought-enduring two-line sterile line and other stable paddy rice or upland rice variety combo, or be rice sterile line and drought-enduring restorer combo with two, or by drought-enduring two-line sterile line and drought-enduring restorer combo, obtain drought-enduring double-line hybrid upland rice through drought resistance screening.
2. the breeding method of a kind of two line method hybridization upland rice according to claim 1, it is characterized in that: described drought-enduring restorer is for parents with upland rice and paddy rice, carry out Extreme drought at segregative generation and coerce screening, constantly isozygoty, finally be bred as Drought hardiness strong, the drought-enduring restorer that coordinate force is good.
3. the breeding method of a kind of two line method hybridization upland rice according to claim 1, it is characterized in that: described drought-enduring two-line sterile line selects the two-line sterile line of rice that Comprehensive Traits is good to be female parent, yield traits is good, the upland rice that drought-resistance ability is strong is paternal hybrid, and segregative generation, under Extreme drought is coerced, selects Drought hardiness strong, there is the seed of the individual plant of two-line sterile line good characteristic, constantly isozygoty, coerce screening, be finally bred as indica type drought-enduring two-line sterile line.
4. the breeding method of a kind of two line method hybridization upland rice according to claim 1, it is characterized in that: drought-enduring for outer rim genetic material is imported to paddy rice bridge formation system by transgene method by described drought-enduring two-line sterile line, the Japonica rice two-line sterile line selecting Comprehensive Traits good is acceptor, again by the method for sexual hybridization, drought-enduring genetic material is imported in two-line sterile line and goes, coerce screening through indoor detection and field, be finally bred as the drought-enduring two-line sterile line of round-grained rice type.
5. the breeding method of a kind of two line method hybridization upland rice according to claim 1, it is characterized in that: described drought-enduring two-line sterile line and drought-enduring restorer combo are for female parent with drought-enduring two-line sterile line, drought-enduring recovery is male parent, preparing hybrid combines, through Extreme drought screening, be finally bred as drought-enduring double-line hybrid upland rice.
6. the breeding method of a kind of two line method hybridization upland rice according to claim 1, it is characterized in that: described drought-enduring two-line sterile line and other stable paddy rice or upland rice variety combo be with drought-enduring two-line sterile line for female parent, the rice varieties that high yield and high quality is disease-resistant or upland rice variety are male parent, preparing hybrid combines, through Extreme drought screening, be finally bred as drought-enduring double-line hybrid upland rice.
7. the breeding method of a kind of two line method hybridization upland rice according to claim 1, it is characterized in that: described two is rice sterile line and drought-enduring restorer combo be with two-line sterile line of rice for female parent, drought-enduring recovery is the combination of male parent preparing hybrid, through Extreme drought screening, be finally bred as drought-enduring double-line hybrid upland rice.
8. the breeding method of a kind of two line method hybridization upland rice according to claim 4, it is characterized in that: with the drought-enduring two-line sterile line of round-grained rice type for female parent, round-grained rice type upland rice or Japonica rice are male parent, and preparing hybrid combines, through Extreme drought screening, be finally bred as the drought-enduring double-line hybrid upland rice of round-grained rice type.
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| CN106069453A (en) * | 2016-07-19 | 2016-11-09 | 莆田秀屿区群韬农业技术开发有限公司 | The breeding method of a kind of drought resisting rice and implantation methods |
| CN106332771A (en) * | 2016-08-08 | 2017-01-18 | 盘锦北方农业技术开发有限公司 | Method for cultivation of high-yield, high-quality and multi-resistant paddy rice new variety |
| CN109744100A (en) * | 2017-11-07 | 2019-05-14 | 吉林米莲花农业科技有限公司 | A kind of breeding method of dry~sowing paddy seed |
| CN111436366A (en) * | 2020-03-25 | 2020-07-24 | 上海天谷生物科技股份有限公司 | Water-saving drought-resistant rice restorer line cultivation method |
| CN111436365A (en) * | 2020-03-25 | 2020-07-24 | 上海天谷生物科技股份有限公司 | Water-saving drought-resistant rice two-line sterile line cultivation method |
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| CN106069453A (en) * | 2016-07-19 | 2016-11-09 | 莆田秀屿区群韬农业技术开发有限公司 | The breeding method of a kind of drought resisting rice and implantation methods |
| CN106069453B (en) * | 2016-07-19 | 2019-06-04 | 新昌县大船畈生物科技有限公司 | A kind of breeding method and implantation methods of drought resisting rice |
| CN106332771A (en) * | 2016-08-08 | 2017-01-18 | 盘锦北方农业技术开发有限公司 | Method for cultivation of high-yield, high-quality and multi-resistant paddy rice new variety |
| CN109744100A (en) * | 2017-11-07 | 2019-05-14 | 吉林米莲花农业科技有限公司 | A kind of breeding method of dry~sowing paddy seed |
| CN109744100B (en) * | 2017-11-07 | 2022-01-07 | 吉林米莲花农业科技有限公司 | Cultivation method of dry-planting rice seeds |
| CN111436366A (en) * | 2020-03-25 | 2020-07-24 | 上海天谷生物科技股份有限公司 | Water-saving drought-resistant rice restorer line cultivation method |
| CN111436365A (en) * | 2020-03-25 | 2020-07-24 | 上海天谷生物科技股份有限公司 | Water-saving drought-resistant rice two-line sterile line cultivation method |
| CN111436366B (en) * | 2020-03-25 | 2023-05-16 | 上海天谷生物科技股份有限公司 | Water-saving drought-resistant rice restorer line cultivation method |
| CN111436365B (en) * | 2020-03-25 | 2023-08-18 | 上海天谷生物科技股份有限公司 | Cultivation method of water-saving drought-resistant rice two-line sterile line |
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