CN103141377A - Light-sensation two-line cultivation method - Google Patents
Light-sensation two-line cultivation method Download PDFInfo
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- CN103141377A CN103141377A CN 201310102665 CN201310102665A CN103141377A CN 103141377 A CN103141377 A CN 103141377A CN 201310102665 CN201310102665 CN 201310102665 CN 201310102665 A CN201310102665 A CN 201310102665A CN 103141377 A CN103141377 A CN 103141377A
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Abstract
The invention relates to a new technical field of rice breeding and particularly relates to a light-sensation two-line cultivation method. The cultivation method concretely comprises the steps of: hybridizing wild rice with commonly cultivated rice, selecting a good strain line, cultivating seeds of the good strain line to germinate, mutagenizing the strain line by focusing sunlight radiation, breeding the multagenized strain line in a iteration generation way, finding a semi-sterile strain in the third generation, cutting stump and tillering for dividing the strain into two strains, respectively transplanting the two strains to places with different elevations, and breeding out light-sensation two lines by the obtained material seeds, wherein the strain in a place in which the daytime is longer than 13 hours is taken as males with fertility and the strain in a place in which the daytime is shorter than 13 hours is mail without the fertility. The light-sensation two-line is bred out by implementing the method, i.e., a new product can be found from variation and stability can be achieved rapidly.
Description
Technical field
The present invention relates to a kind of rice breeding new technical field, be specifically related to a kind of photosensitive two breeding methods that are.
Background technology
China ploughs and reduces, and population increases, and Food Security is cardinal task all the time.And the plantation double-hybrid rice strains is the most effectual way that improves cereal crops yield per unit area.Current, the cultivated area of China double-hybrid rice strains increases year by year, and the double-hybrid rice strains cultivated area that economize in Anhui, Hubei, Hunan etc. has surpassed the Three-line Hybrid paddy rice.Along with deepening continuously of paddy rice two line method heterosis utilization research, two line method seed production technique constantly perfect, double-hybrid rice strains will be made more great contribution to China's grain security.But in paddy rice two line method heterosis utilization, the breeding of paddy rice dual-purpose caryon sterile line but becomes a large obstacle of double-hybrid rice strains development.The breeding of paddy rice dual-purpose caryon sterile line in the past mainly contains the cold water string irrigating breeding and Hainan in Winter is bred two kinds.The cold water string irrigating breeding exists the construction of base input cost large; Water resource waste is serious, and conflicts with the large tracts of land industrial water; Suitable cold-penetration water resource is limited, coverage ratio is not high; Breeding output is lower, and is ineffective.The problem of numerous main existence of Hainan winter is poor stability, and output is unstable and male-sterile seed that produce is of poor quality.Therefore, the breeding of resolving the paddy rice dual-purpose caryon sterile line has become the difficult problem that double-hybrid rice strains is developed in a healthy way and must capture.
Learn from pertinent literature: with the research team headed by the Chen Liyun of Agricultural University Of Hunan professor, be used to from Central Weather Bureau's more than 870 meteorological site in whole nation Historical Meteorological Information of 50 years, according to the poplar bloassom phase safety requirement to temperature of can educating and ear of paddy rice dual-purpose caryon sterile line fertility-sensitive period, adopt the calculator treatment technology, set up paddy rice dual-purpose caryon sterile line breeding data model, develop the paddy rice dual-purpose caryon sterile line of a cover practicality and strong operability and breed the base selective system.Utilize this cover system, filter out best paddy rice dual-purpose caryon sterile line breeding base and optimum fertility sensitive period.With this system, the best base the selection result of breeding of the different paddy rice dual-purpose caryon sterile line of critical temperature of sterility is shown, critical temperature of sterility is that the breeding spot of paddy rice dual-purpose caryon sterile line the best of 22 degree is the Baoshan City in Yunnan Province, and the probability of its reproductive success is more than 2 times of Sanya, Hainan.Utilized in 2010 this screening system to the base carried out the breeding checking of paddy rice dual-purpose caryon sterile line.Test is carried out in Shui Chang township, Shidian County, Baoshan, Yunnan city, and area is 3.6 hectares, used sterile be C815S, April 10 sowing, May 25 transplanted, August 18 neat fringe, September 28 maturation.On September 27th, 2010, in Hunan Province organizing nation of Science and Technology Department, the relevant expert has carried out surveying the product examination to the scene of breeding, calculate by 13.5% water content, reproductive output reaches 8437.5 kilograms of per hectares, this output has been created the tidemark of China's paddy rice dual-purpose caryon sterile line breeding, and the male-sterile seed quality of breeding is fine.The breeding area of paddy rice dual-purpose caryon sterile line in 2011 in the high altitude localities, Yunnan increases sharply.This modes of reproduction will substitute the numerous and cold water string irrigating breeding of Hainan winter.Become the most important mode of paddy rice dual-purpose caryon sterile line breeding.And will make significant contribution to sound development and the grain security of China double-hybrid rice strains.
Just, such scheme is technology specialty, complexity not only, and implement also need the specialty facilities and equipment, because this scheme is according to the poplar bloassom phase safety requirement to temperature of can educating and ear of paddy rice dual-purpose caryon sterile line fertility-sensitive period, adopt the calculator treatment technology, set up paddy rice dual-purpose caryon sterile line breeding data model, develop the paddy rice dual-purpose caryon sterile line of a cover practicality and strong operability and breed the base selective system.
Summary of the invention
Purpose of the present invention is exactly overcome the deficiency of above-mentioned technology and a kind of photosensitive two brand-new breeding methods that are are provided.Specifically: utilize wild rice and common cultivation rice varieties to hybridize rear selection elite plant strain, utilize the focal length solar radiation to carry out mutagenesis after germinateing the cultivating seeds of elite plant strain, Mutated strain is bred through adding generation again, the third generation is found half sterile strain, the root and stem of certain plants strip off of tillering is cut in this strain become two strains, transplant respectively in the ground of two place's Different Altitude, go out photosensitive two with the material seed breeding of gained and be, be to be longer than daytime to be male-fertile in 13 hours, be shorter than 13 hours daytime and be male sterile.Implement the present invention, select photosensitive two and be, namely may find new product from variation, also can stablize very soon.
The present invention is achieved through the following technical solutions:
1, photosensitive two breeding methods that are, to utilize wild rice and common cultivation rice varieties to hybridize rear selection elite plant strain in technical scheme, utilize the focal length solar radiation to carry out mutagenesis after germinateing the cultivating seeds of elite plant strain, Mutated strain is bred through adding generation again, and the third generation is found half sterile strain, the root and stem of certain plants strip off of tillering is cut in this strain become two strains, implant respectively in two plates, one dish moves on to height above sea level 110～130 meters, and during heading, check pollen is that full allusion quotation loses type, male sterile; Height above sea level 400～600 meters are stayed in one strain, are half sterile, and check pollen is black for dying on a small quantity, and all the other lose type pollen for justifying to lose with allusion quotation; Going out photosensitive two with the material seed breeding of gained at last is, namely is longer than daytime to be male-fertile in 13 hours, is shorter than 13 hours daytime and is male sterile.
2, described photosensitive two breeding methods that are, focal length solar radiation mutagenesis described in technical scheme, method step is: in the period 10～11 o'clock of the morning of fine day, divide three base portions that go on foot rice sprout to carry out radiation with the focus of the poly-sunshine of 8cm magnifying glass, the first step was with the large focus radiation of broad bean 10～50 seconds, second step was with the large focus radiation of watermelon seeds 1～5 minute, the 3rd step: be radiated the little phenomenon of smoldering of rice sprout base portion appearance with a large focus of soya bean and namely stop, and drip the moistening bud paddy of mineral water.
The existing following advantage of the present invention:
1, the two breeding method measures uniquenesses that are, easily enforcement proposed by the invention.
2, by implementing the present invention, having overcome traditional two fully is that the breeding seed condition is narrow, and unstable, and the production of hybrid seeds meets couple of days low temperature between booting stage, and part is from the solid two two large drawbacks that are such as risk.
3, by implementing the present invention, utilize the hybridization of the anti-extensive resistance advantage of wild rice and cultivar High Yielding Heterosis, select elite plant strain, then adding generation through mutagenesis, selecting photosensitive two is that the special instrument of use only has magnifying glass.
4, by implementing the present invention, the varietal characteristic of breeding has: stem culm base, leaf margin, abdomen sword, column cap are purple.85 centimetres of plant heights, grain is elongated, kilopond 23 grams, rice is of fine quality, anti-arriving, column cap is large, and exposing ratio is high, and motility rate is strong, broadcasts about 66 days phases beginning weakly sensitivity.Outcrossing power, coordinate force are better, and is restorative wide, bacterial blight-resisting, in the advantage such as anti-rice temperature.
5, by implementing the present invention, for cultivate the high-quality female parent, the hybridization superior rice is obtained important breakthrough.
Embodiment
Below in conjunction with embodiment, method of the present invention is further illustrated.
Photosensitive two breeding methods that are, embodiment is as follows:
Adopt melon wild rice hybridization IR58025B, backcross progeny is selected elite plant strain---very vertical strain; With the cultivating seeds of this strain after germinate again through focused solar energy radiation carry out mutagenesis, method of mutagenesis is: in the period 11～12 o'clock of noon of fine day, using the focus of the poly-sunshine of magnifying glass of 8cm divides three base portions that go on foot rice sprout to carry out radiation, the first step was with the large focus radiation of broad bean 30 seconds, second step was with the large focus radiation of watermelon seeds 2 minutes, the 3rd step: be radiated the little phenomenon of smoldering of rice sprout base portion appearance with a large focus of soya bean and namely stop, and drip the moistening bud paddy of mineral water.Mutated strain is bred through adding generation again, and the third generation is found half sterile strain, the root and stem of certain plants strip off of tillering is cut in this strain become two strains, implants respectively in two plates, and a dish moves on to height above sea level 115 meters, and during heading, check pollen is that full allusion quotation loses type, male sterile; Height above sea level 500 meters are stayed in one strain, are half sterile, and check pollen is black for dying on a small quantity, and all the other lose type pollen for justifying to lose with allusion quotation; Going out photosensitive two with the material seed breeding of gained at last is, namely is longer than daytime to be male-fertile in 13 hours, is shorter than 13 hours daytime and is male sterile.
Obtaining this photosensitive two is called after: field, osmanthus S.
The feature of this kind: stem culm base, leaf margin, abdomen sword, column cap are purple.85 centimetres of plant heights, grain is elongated, kilopond 23 grams, rice is of fine quality, anti-arriving, column cap is large, and exposing ratio is high, and motility rate is strong, broadcasts about 66 days phases beginning weakly sensitivity.Outcrossing power, coordinate force are better, and is restorative wide, bacterial blight-resisting, in anti-rice temperature.
Claims (1)
1. photosensitive two breeding methods that are, it is characterized in that: utilize wild rice and common cultivation rice varieties to hybridize rear selection elite plant strain, utilize the focal length solar radiation to carry out mutagenesis after germinateing the cultivating seeds of elite plant strain, Mutated strain is bred through adding generation again, and the third generation is found half sterile strain, the root and stem of certain plants strip off of tillering is cut in this strain become two strains, implant respectively in two plates, one dish moves on to height above sea level 110～130 meters, and during heading, check pollen is that full allusion quotation loses type, male sterile; Height above sea level 400～600 meters are stayed in one strain, are half sterile, and check pollen is black for dying on a small quantity, and all the other lose type pollen for justifying to lose with allusion quotation; Going out photosensitive two with the material seed breeding of gained at last is, namely is longer than daytime to be male-fertile in 13 hours, is shorter than 13 hours daytime and is male sterile.
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| CN 201310102665 CN103141377A (en) | 2013-03-28 | 2013-03-28 | Light-sensation two-line cultivation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105594589A (en) * | 2016-03-10 | 2016-05-25 | 周重学 | Rapid breeding method for salt and alkali rice |
| CN105638347A (en) * | 2016-01-20 | 2016-06-08 | 安徽理想种业有限公司 | Rice two-line sterility line propagation method |
| CN105766628A (en) * | 2016-03-10 | 2016-07-20 | 周安岳 | Method for maintaining rapid advantages of variant lines stable with solar energy focal radiation on sprout grains |
-
2013
- 2013-03-28 CN CN 201310102665 patent/CN103141377A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105638347A (en) * | 2016-01-20 | 2016-06-08 | 安徽理想种业有限公司 | Rice two-line sterility line propagation method |
| CN105594589A (en) * | 2016-03-10 | 2016-05-25 | 周重学 | Rapid breeding method for salt and alkali rice |
| CN105766628A (en) * | 2016-03-10 | 2016-07-20 | 周安岳 | Method for maintaining rapid advantages of variant lines stable with solar energy focal radiation on sprout grains |
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Application publication date: 20130612 |