CN102577933B - Method for breeding indica sterile line-japonica restorer line intersubspecific hybrid rice and application of method - Google Patents
Method for breeding indica sterile line-japonica restorer line intersubspecific hybrid rice and application of method Download PDFInfo
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Abstract
The invention discloses a method for breeding indica sterile line-japonica restorer line intersubspecific hybrid rice. A hybridization polymerization and testcross screening alternate progressive breeding method is utilized according to a breeding target; a japonica type widely compatible restorer line in which a wide compatibility gene, a male sterile cytoplasmic restorer gene and multiple kinds of functional genes are polymerized is bred by integrating various breeding technologies; when an indica-japonica intersubspecific hybrid rice combination is prepared by using the japonica type widely compatible restorer line, an indica three-line sterile line and an indica two-line sterile line, the problems that first generation of indica-japonica hybrid is low in yield, high in plant, long in growth period and low in grain plumpness can be effectively solved; an effective breeding way and an effective breeding method are provided for breeding indica-japonica hybrid rice which directly utilizes powerful intersubspecific hybrid advantages; and the method is applied in the field of the research on the utilization of intersubspecific hybrid advantages of rice three-line and two-line methods.
Description
Technical field
The present invention relates to paddy rice cross breeding breeding field, be specifically related to the not extensive inter-subspecies hybrid rice selection of round-grained rice of Xian,
The inventive method is applicable to the seed selection that Three-line rice method, two is method ideotype breeding.
Background technology
At present, hybrid rice China year popularizing area more than 13,000,000 hectares, but Hybrid Rice Combination almost all belongs to Interspecific hybrid rice, to the utilization of rice heterosis or in by utilizing rice varieties Heterosis, to part, indirectly utilize Rice intersubspecific hybrid advantage step transition, output is further improved, must more directly, comprehensively utilize Rice intersubspecific hybrid advantage in other words conj.or perhaps, this has become rice breeding man's common recognition.Due to seed selection can practical strong advantage ideotype breeding to be combined in technical difficulty very large, be mainly must solve that indica-japonica hybrid generation ripening rate is low, plant is too high, breeding time is oversize and the difficult problem such as Grain Filling degree is bad, the direct utilization of Rice intersubspecific hybrid advantage does not obtain breakthrough for a long time simultaneously.
It is method two classes that hybrid rice has three line method and two, respectively there are pluses and minuses: two line method has the three large advantages that combo is free, seed production routine is simple, can avoid sterile cytoplasm unification, but because breeding and the production of hybrid seeds of the quick caryon sterile line of light (temperature) are restricted by the space-time condition such as illumination, temperature, there are uncertain risk factors, higher than three line method to the technical requirement of breeding and the production of hybrid seeds.Up to the present, on producing, Three-line Hybrid rice and two is that method hybrid rice is still a state coexisting.
Xian not the extensive inter-subspecies hybrid rice seed selection of round-grained rice be between indica and japonica subspecies powerful heterotic comparatively comprehensively, directly utilize, theoretically, as long as the wide compatibility gene that can overcome Xian, the not affine hybrid dysgenesis causing of round-grained rice subspecies with can recover the fertility restorer gene that sterile cytoplasm causes and be aggregated in round-grained rice type restorer, with indica CMS line (A or S) combo seed selection, just can realize the direct utilization that three line method, two is method subspecies indica and japonica hybrid advantage more simultaneously.But not in the breeding production operation process of the extensive inter-subspecies hybrid rice of round-grained rice, find still to have many difficult problems to need to solve at the Xian of seed selection practicality.
Summary of the invention
The object of this invention is to provide a kind of method of ideotype breeding of seed selection practicality, to be on the basis of method breeding in Three-line rice method and two, structure can directly utilize powerful heterotic breeding system between rice indica subspecies, for seed selection subspecies super hybridized rice provides effective breeding approach and method, and cultivate the inter-subspecies hybrid rice that energy is practical and newly combine.
Research adopts the technology path of indica CMS line (A or S)/round-grained rice type wide-congenial restoring line (R) for research, is called for short " Xian not/round-grained rice is extensive " this group mode.Main key technology is the seed selection to round-grained rice type wide-congenial restoring line.
The technical solution used in the present invention is as follows for achieving the above object:
Xian is the extensive inter-subspecies hybrid rice selection of round-grained rice not, it is characterized in that, specifically comprises the following steps:
(1) solve the low and poor difficult problem of Grain Filling degree of indica-japonica hybrid F1 ripening rate, be bred as
phase round-grained rice type wide-congenial restoring line;
Adopt wide affine kind 02428, lemont and Restoring Line of Japonica Rice C fort to carry out multiple cross, from its segregative generation F4, carry out widely test cross in pairs with indica CMS line Long te fu A, according to ripening rate and the circularity information of test cross F1 feedback, centering material selection is selected, from generation to generation follow the tracks of testcross and screening through many, stable for being bred as in strain material by F10
phase round-grained rice type wide-congenial restoring line-round-grained rice R518;
(2) with
phase, round-grained rice type wide-congenial restoring line-round-grained rice R518 was basic material, in the F11 generation that adopts the weak middle round-grained rice strain 0416(of response to temperature strong photosensitivity to come from hybrid combination town rice 5262/ nasal mucus rice No. 8, is stablized product based material) round-grained rice R518 is improved, prepare round-grained rice 0416 in round-grained rice R518/, round-grained rice 0416//round-grained rice R518 combination in round-grained rice R518/, utilize and add generation of breeding in generation at Sanya, Hainan and carry out photosensitivity screening to entering material selection, eliminate the material precocious because photosensitivity is strong, retain response to temperature strong in slow ripe wood material, and proceed and the testcross and screening of indica CMS line Long te fu A, through the seed selection in many generations, by the F9 of round-grained rice 0416 hybrid combination in round-grained rice R518/ for being bred as in strain a little less than the strong photosensitivity of response to temperature
phase round-grained rice type wide-congenial restoring line-round-grained rice R1130,
(3) characteristic that the easy shattering of solution indica-japonica hybrid F1, grain type fall short of, and right
the phase economical character of round-grained rice type wide-congenial restoring line is improved, and is bred as
phase round-grained rice type wide-congenial restoring line:
In the F13 generation that adopts long grain round-grained rice 022(to come from the excellent 422/R161 of hybrid combination nasal mucus, is stablized product based material) right
phase, round-grained rice type wide-congenial restoring line-round-grained rice R1130 improved, prepare the hybrid combination such as the long grain of round-grained rice R1130/ round-grained rice 022, the long grain of round-grained rice R1130/ round-grained rice 022//round-grained rice R1130, proceed the screening of sensitization response to temperature and testcross and screening work at segregative generation, and the tracking of carrying out seed holding and grain length to entering material selection selects, obtain in for material at the F10 of the long grain of round-grained rice R1130/ round-grained rice 022//round-grained rice R1130 hybrid combination
phase round-grained rice type wide-congenial restoring line-round-grained rice R1217, it has long grain type and suitable seed holding, meets the requirement of indica Hybrid Rice growing area;
(4) the higher problem of plant of solution indica-japonica hybrid F1, is bred as
phase round-grained rice type wide-congenial restoring line:
With step (3) seed selection
phase round-grained rice type wide-congenial restoring line is basic seed selection material, expands strain cultivated area, under multiple soil fertility condition, plants, and screens strain material of short stem, and with the fragrant A test cross in indica CMS line Jiangxi, is finally bred as of short stem
phase round-grained rice type wide-congenial restoring line.
Described Xian is the application of the extensive inter-subspecies hybrid rice selection of round-grained rice not, it is characterized in that: the inventive method can be applied in the seed selection that Three-line rice method, two is method ideotype breeding.
Beneficial effect of the present invention:
The present invention is owing to combining multinomial rice variety selective technology, the round-grained rice type restorer of seed selection can be simultaneously and three be, two be that indica CMS line makes and produces upper practical ideotype breeding combination, make hybrid vigour powerful between rice subspecies be able to comparatively comprehensively, directly utilize, for further improving rice yield, effective technological means is provided, the present invention is scientific and reasonable, and practicality is good.
Accompanying drawing explanation
Fig. 1 is the not extensive inter-subspecies hybrid rice selection of round-grained rice flow chart of Xian.
Specific embodiments
Embodiment:
1. solve the low and poor difficult problem of Grain Filling degree of indica-japonica hybrid F1 ripening rate, be bred as
phase round-grained rice type wide-congenial restoring line.
Adopt wide affine kind 02428, lemont and Restoring Line of Japonica Rice C fort to carry out multiple cross (02428//Lemont/C fort), from its segregative generation F4, carry out widely test cross in pairs with WA type indica CMS line Long te fu A, according to ripening rate and the circularity information of test cross F1 feedback, centering material selection is selected, from generation to generation follow the tracks of testcross and screening through many, stable for being bred as in strain material by F10
phase round-grained rice type wide-congenial restoring line-round-grained rice R518, after tested round-grained rice R518 and Zhenshan 97a,
the ripening rate that the indica CMS line such as-32A, Long te fu A is joined indica-japonica hybrid F1 is all more than 80%, and circularity is good, and thousand kernel weight is at 26-28 grams, effectively solves the low and poor problem (in table 1) of Grain Filling degree of indica-japonica hybrid F1 ripening rate.
2. solve the difficult problem that indica-japonica hybrid F1 grows breeding time partially, be bred as
phase round-grained rice type wide-congenial restoring line.
With
phase, round-grained rice type wide-congenial restoring line-round-grained rice R518 was basic material, for causing that the main cause that indica-japonica hybrid F1 grows breeding time is partially because Parent exists notable difference in photosensitivity and response to temperature, in the F11 generation that adopts the weak middle round-grained rice strain 0416(of the strong photosensitivity of response to temperature to come from hybrid combination town rice 5262/ nasal mucus rice No. 8, is stablized strain) round-grained rice R518 is improved.Prepare the combination such as round-grained rice 0416//round-grained rice R518 in round-grained rice 0416 in round-grained rice R518/, round-grained rice R518/, utilize and add generation of breeding in generation at Sanya, Hainan and carry out photosensitivity screening to entering material selection, eliminate the material precocious because photosensitivity is strong, retain response to temperature strong in slow ripe wood material, and proceed and the testcross and screening of indica CMS line Long te fu A, through the seed selection in many generations, by the F9 of round-grained rice 0416 hybrid combination in round-grained rice R518/ for being bred as in strain
phase round-grained rice type wide-congenial restoring line-round-grained rice R1130., after tested round-grained rice R1130 and most long-grained nonglutinous rice two be the long-grained nonglutinous rice three of male sterile line and part be male sterile line in the time of the combination of preparation indica and japonica subspecies breeding time not overlength, substantially solved oversize problem (in table 2) indica-japonica hybrid F1 breeding time.
3. the characteristic that the easy shattering of solution indica-japonica hybrid F1, grain type fall short of, and right
the phase economical character of round-grained rice type wide-congenial restoring line is improved, and is bred as
phase round-grained rice type wide-congenial restoring line.
For should have suitable seed holding and the requirement of long grain type at the Hybrid Rice of long-grained nonglutinous rice growing area application, in the F13 generation that adopts long grain round-grained rice 022(to come from the excellent 422/R161 of hybrid combination nasal mucus, is stablized strain) material pair
phase, round-grained rice type wide-congenial restoring line-round-grained rice R1130 improved, prepare the hybrid combination such as the long grain of round-grained rice R1130/ round-grained rice 022, the long grain of round-grained rice R1130/ round-grained rice 022//round-grained rice R1130, proceed the screening of sensitization response to temperature and testcross and screening work at segregative generation, and the tracking of carrying out seed holding and grain length to entering material selection selects, obtain in for material at the F10 of the long grain of round-grained rice R1130/ round-grained rice 022//round-grained rice R1130 hybrid combination
phase round-grained rice type wide-congenial restoring line-round-grained rice R1217.Round-grained rice R1217 has long grain type and suitable seed holding, and thousand kernel weight reaches 31 grams, and economical character is good, and round-grained rice R1217 has retained after tested
the original function of phase round-grained rice type wide-congenial restoring line (round-grained rice R1130), and with the subspecies indica and japonica hybrid that round-grained rice R1217 joins have suitable seed holding, grain type long, meet the requirement (in table 3) of indica Hybrid Rice growing area.
4. the higher problem of plant that solves indica-japonica hybrid F1, is bred as
phase round-grained rice type wide-congenial restoring line.
Because the plant height of III phase round-grained rice type wide-congenial restoring line-round-grained rice R1217 own is at 115-120 centimetres, between the indica and japonica subspecies of preparation, be combined in plant height under high fertile condition and reach 135-145 centimetres, lodging resistance is poor.In order to strengthen the lodging resistance of indica-japonica hybrid, the plant height that reduces restorer is an available method.With
phase round-grained rice type wide-congenial restoring line (round-grained rice R1217 and sister system thereof) is basic seed selection material, expand strain cultivated area, under multiple soil fertility condition, plant, to screen than obviously short material of round-grained rice R1217 plant height, and with the fragrant A test cross in indica CMS line Jiangxi, do to follow the tracks of seed selection according to test cross F1, be finally bred as than short 10-15 centimeters of round-grained rice R1217's
phase round-grained rice type wide-congenial restoring line (representing that strain has round-grained rice R321, round-grained rice R468, round-grained rice R206), after tested round-grained rice R321 etc.
phase round-grained rice type wide-congenial restoring line and indica CMS line preparation ideotype breeding have reached produces upper practical requirement (in table 4).
Table 1 round-grained rice R518 and Xian, round-grained rice male sterile line test cross F1 ripening rate, thousand kernel weight and the performance of Grain Filling degree
Table 2: round-grained rice R1130 and indica CMS line test cross F1 breeding time and ripening rate performance
| ? | Lexiang 202 A | Bright 3A | Long te fu A | Peiai 64S | Guangzhan 63S |
| Full fertility (d) | 122.0 | 120.5 | 118.5 | 118.0 | 129.5 |
| Ripening rate (%) | 83.1 | 81.5 | 85.7 | 88.5 | 91.2 |
Table 3: round-grained rice R1217 and indica CMS line test cross F1 Length-width ratio and seed holding performance
| ? | Lexiang 202 A | The fragrant A in Jiangxi | The rich A of paddy | Peiai 64S | Guangzhan 63S |
| Length-width ratio | 3.0 | 2.9 | 2.7 | 3.0 | 3.0 |
| Seed holding | Medium | Medium | Medium | Medium | Medium |
Table 4: Indica-Japonica Hybrid Rice combination Agronomic
Claims (2)
1. the not extensive inter-subspecies hybrid rice selection of round-grained rice of Xian, is characterized in that, specifically comprises the following steps:
(1) adopt wide affine kind 02428, lemont and Restoring Line of Japonica Rice C fort to carry out multiple cross, from its segregative generation F4, carry out widely test cross in pairs with indica CMS line Long te fu A, according to ripening rate and the circularity information of test cross F1 feedback, centering material selection is selected, from generation to generation follows the tracks of testcross and screening through many, by F10 for being bred as stable I phase round-grained rice type wide-congenial restoring line-round-grained rice R518 in strain material;
(2) take I phase round-grained rice type wide-congenial restoring line-round-grained rice R518 as basic material, adopt the weak middle round-grained rice strain 0416 of the strong photosensitivity of response to temperature to improve round-grained rice R518, prepare round-grained rice 0416 in round-grained rice R518/, round-grained rice 0416//round-grained rice R518 combination in round-grained rice R518/, utilize and add generation of breeding in generation at Sanya, Hainan and carry out photosensitivity screening to entering material selection, eliminate the material precocious because photosensitivity is strong, retain response to temperature strong in slow ripe wood material, and proceed and the testcross and screening of indica CMS line Long te fu A, through the seed selection in many generations, by the F9 of round-grained rice 0416 hybrid combination in round-grained rice R518/ for the II phase round-grained rice type wide-congenial restoring line-round-grained rice R1130 being bred as in strain a little less than the strong photosensitivity of response to temperature, described middle round-grained rice strain 0416 comes from the F11 generation of hybrid combination town rice 5262/ nasal mucus rice No. 8 and stablizes product based material,
(3) adopt long grain round-grained rice 022 to improve II phase round-grained rice type wide-congenial restoring line-round-grained rice R1130, prepare the long grain of round-grained rice R1130/ round-grained rice 022, the long grain of round-grained rice R1130/ round-grained rice 022//round-grained rice R1130 hybrid combination, proceed the screening of sensitization response to temperature and testcross and screening work at segregative generation, and the tracking of carrying out seed holding and grain length to entering material selection is selected, obtain III phase round-grained rice type wide-congenial restoring line-round-grained rice R1217 at the F10 of the long grain of round-grained rice R1130/ round-grained rice 022//round-grained rice R1130 hybrid combination in for material, it has long grain type and suitable seed holding, meet the requirement of indica Hybrid Rice growing area, the F13 that described long grain round-grained rice 022 comes from the excellent 422/R161 of hybrid combination nasal mucus is for stablizing product based material,
(4) take the III phase round-grained rice type wide-congenial restoring line of step (3) seed selection as basic seed selection material, expand strain cultivated area, under multiple soil fertility condition, plant, screen strain material of short stem, and with the fragrant A test cross in indica CMS line Jiangxi, be finally bred as IV phase round-grained rice type wide-congenial restoring line of short stem.
2. the not application of the extensive inter-subspecies hybrid rice selection of round-grained rice of Xian as claimed in claim 1, is characterized in that: the method is applied in the seed selection that Three-line rice method, two is method ideotype breeding.
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| CN103571869B (en) * | 2012-07-21 | 2016-12-21 | 复旦大学 | A kind of method utilizing LRK1 gene transformation to improve Indica-Japonica rice hybrid fertility |
| CN103461093B (en) * | 2013-08-14 | 2015-09-02 | 江苏丘陵地区镇江农业科学研究所 | A kind of breeding method of subspecies Indica Three Line Restorer |
| 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 |
| CN113661916B (en) * | 2021-06-29 | 2022-05-06 | 高邮周邶墩农业发展有限公司 | Breeding method of long-grain indica-japonica intermediate wide-affinity restorer line |
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