CN1124564A - Hybrid vigor fixing breeding process for rice apomixis - Google Patents
Hybrid vigor fixing breeding process for rice apomixis Download PDFInfo
- Publication number
- CN1124564A CN1124564A CN 94118857 CN94118857A CN1124564A CN 1124564 A CN1124564 A CN 1124564A CN 94118857 CN94118857 CN 94118857 CN 94118857 A CN94118857 A CN 94118857A CN 1124564 A CN1124564 A CN 1124564A
- Authority
- CN
- China
- Prior art keywords
- rice
- hybrid
- apomixis
- seed
- filial generation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
Abstract
The crossbreeding technique for rice includes such steps as selectively culturing apomictic line of paddy rice, selecting parents, crossing, screening agamospecies genotype, screening apomictant, varieties comparison, and selecting apomictic hybrid rice with high quality and yield and multiple resistances, and features fixed heterosis of bred rice 84-15, its breeding period decreased by 2/3, and its yield increased by 15%.
Description
The invention belongs to the rice heterosis utilization field.
The '30s, Navashion and Karpechenk propose the breeding of apomixis hybrid vigor fixing.The eighties is found apomixis genetic resourcess such as corn bluegrass (poa pretensis), big broomcorn millet (Panicum madmum), jowar R473.But up to the present, do not report paddy rice apomixis research situation in the world as yet.
The purpose of this invention is to provide a kind of breeding technique that the production of hybrid seeds every year again can multi-generational use apomixis hybrid vigor fixing that do not need.
Content of the present invention is fixing rice heterosis breeding technique, has six programs:
(1) breeding rice apomixis.Seed selection has system's separation, system's heredity, fixedly the genetic tool japonica rice 84-15 and the long-grained nonglutinous rice 3027 of hybrid characteristics.In hybrid vigor fixing research, at first with the long medicine wild rice (O.Longistaminata in Africa, chromosome is AIAI) and Asia cultivated rice (O.Sativa japonica rice 80-6195, chromosome set is AA) hybridization, and acquisition hybrid seed, the first filial generation plant is ripe late in Beijing, hybrid vigour is very tangible, the second filial generation of this combination is mad the separation, therefrom receive 29 strain seeds, plant 29 sub-districts respectively at the hybrid third generation, isolate thus that botanical character and biological property are that identical three different groups are japonica rice 84-15 between the individuality, japonica rice 84-23 and japonica rice 84-01, (Fig. 1); With the long medicine wild rice hybridization in Asia cultivated rice bright extensive 63 and Africa, and acquisition hybrid seed, the first filial generation plant of this combination is at Beijing normal mature, hybrid vigour is unconspicuous, isolate at second filial generation that botanical character and biological property are identical between the individuality, two different colonies, be high stalk group of hill and group of hill of short stem, long-grained nonglutinous rice 3027 and long-grained nonglutinous rice 3028, (Fig. 2) with japonica rice 84-15, japonica rice 84-01, japonica rice 84-23 and long-grained nonglutinous rice 3027, fix heterotic carrier and sexual reproduction rice varieties of long-grained nonglutinous rice 3028 is that acceptor is hybridized, all can obtain hybrid seed, can select at second filial generation does not need the hybrid rice variety that the production of hybrid seeds every year again can multi-generational use, as in new No. 1 (84-15 * happiness honeybee).No. 2, hybrid rice (84-15 * ((complete No. 2 * reed is big in osmanthus) * osmanthus is big)), japonica rice (84-15 * E Yi 105), No. 1, hybrid rice (3027 * mill enlightening), long-grained nonglutinous rice 89-63 (84-15 * close positive 23), long-grained nonglutinous rice (3027 * river is short), long-grained nonglutinous rice (3027 * three osmanthus are sticking) etc.; Through cytological observation japonica rice 84-15 radicle chromosome numbers are 2n=24, albuminous cell chromosome number about 95% is 2n=24, be 3n=36 about 5%, prove that thus albuminous cell about 95% does not have " three merge ", promptly two polar cells have the ability that develops into endosperm automatically.Embryology studies have shown that the asexual embryo of japonica rice 84-15 and long-grained nonglutinous rice 3027 is from the strain core cell; Genetics research points out that japonica rice 84-15 and long-grained nonglutinous rice 3027 have that system separates, system's heredity, the fixing characteristic of hybrid.Above experimental result proof japonica rice 84-15 and long-grained nonglutinous rice 3027 etc. are the paddy rice apomixis.
(2) apolegamy parent, apolegamy parent's principle is to select one of two to be apomixis, perhaps two parents are apomixis, the paddy rice apomixis and the sexual reproduction rice varieties of seed selection high-quality, high yield, better resistance, proterties complementation that coordinate force is high are done hybrid strain, also will consider the complementation of two parents' proterties such as rice matter, output, resistance, coordinate force; But in the parent, who makes male parent, who does maternal? this will decide according to type under the apomixis, because the gynoecium of obligate apomixis refusal is accepted pollen, and the pollen of itself has vitality, so it can only do male parent and other inter breed crossings, the gynoecium of facultative apomixis can be accepted pollen, and the pollen of itself also has vitality, so it both can make female parent, also can do male parent and other inter breed crossings,, can access hybrid seed as facultative apomixis long-grained nonglutinous rice 89-63 and 84-01 hybridization of facultative apomixis japonica rice.
(3) parent that will match is hybridized, and obtains to contain the genotypic paddy rice hybrid of apomixis.In apomictic rice, bloom the previous day whole fringe, castration, bagging as long-grained nonglutinous rice 84-15, long-grained nonglutinous rice 3027; The pollen at amphigenetic rice varieties such as mill enlightening, happiness peak awarded on the column cap of maternal japonica rice 84-15, long-grained nonglutinous rice 3027 in second day, bagging is isolated then, can obtain containing the apomictic hybrid seed of paddy rice through 2～3 pollinations like this, as 84-15 * happiness peak, 3027 * mill enlightening; This method can species hybriding, also can carry out inter-subspecies hybrid, (refers to long medicine wild rice in Africa and Asia cultivated rice) between also can planting and hybridize that success rate can reach 100%.
(4) screening contains the genotype of paddy rice clonal seeds, with top resulting hybrid seed as 84-15 * the happiness peak, 3027 * mill enlightening, respectively by the combination sowing, the individual plant rice transplanting, observe then and be marked on botanical character and the biological property with maternal as japonica rice 84-15, long-grained nonglutinous rice 3027 and male parent are as the happiness honeybee, the half-blood plant that the mill enlightening is different, when these plant blossom pollinations, when the oogamete that carries the apomixis gene combines with the andro gamete that carries the apomixis gene, can produce the recessive genotypic rice paddy seed of agamont that isozygotys, gather in the crops by fringe by the combination individual plant respectively when ripe, threshing respectively, number respectively, pack is preserved, and then contains clonal seeds in it: as 84-15 * happiness peak, 3027 * mill enlightening; These clonal seeds just can show the next generation, and this practice and conventional rice and hybrid rice breeding method are first generation of hybrid mixed seeding, and it is fully inequality mixing threshing and preserving.
(5) Screening of Rice agamont promptly screens high-quality, high yield, many anti-paddy rice agamonts; To contain apomictic clonal seeds, as 84-15 * happiness peak, 3027 * mill enlightening, respectively by combination, the sowing of strain fringe system, rice transplanting; Two kinds of phenotypes can occur the second filial generation plant: first kind is not separate group of hill, their botanical character and biological property be identical be agamont; Second kind is separated strain, botanical character of their each plant and biological property are fully inequality, (Fig. 3) our target is to screen first kind of group of hill as 84-15 * happiness honeybee, and fixedly group of hill 1,2,3, and they are mixed threshing, numbering, pack preservation respectively.If system does hybrid strain with two facultative apomixises, they are the first generation of hybrid or near the hybrid vigour of the first generation of hybrid, the second generation of hybrid that is to say them is unseparated or perhaps unseparated substantially fixedly; It is fully inequality that the method for this breeding rice agamont and conventional breeding method are selected at the continuous individual plant of hybrid generation.
(6) carry out kind relatively, seed selection high-quality, high yield, many anti-apomixis hybrid rice varieties, with the agamont of the hybrid third generation as 84-15 * happiness peak, 3027 * mill enlightening and contrast kind of hybrid rice such as long-grained nonglutinous rice Shanyougui 33, japonica rice show excellent 57, sowing, rice transplanting between breeding time, are carried out field investigation respectively, the sampling species test, statistics, screening be than the hybrid rice variety of hybrid rice Functionality, quality and appealing design, output height, better resistance, as in new No. 1, No. 1, hybrid rice, No. 2, hybrid rice.These hybrid rice varieties are not need the production of hybrid seeds every year, again can multi-generational use, showed characteristics such as yielding ability is good, rice is of fine quality, better resistance, wide adaptability.
Advantage of the present invention and good effect.The present invention is a kind of paddy rice high-quality, super high-yielding, many anti-breeding new ways, solved that the hybrid rice parent is few, the difficult problem of rice matter difference, also solved the mad stable problem of difficulty of separating of conventional rice distant hybrid progeny, fixedly between kind, the hybrid vigour between subspecies, kind, shorten breeding cycle more than 2/3rds, is the characteristics of the multi-generational use of the hybrid vigour of hybrid rice and conventional rice one comprehensively, becomes a kind of desirable breeding technique.Use this breeding technique new No. 1 (japonica rice 84-15 * happiness peak) in the hybrid rice of second filial generation seed selection has, No. 2, long-grained nonglutinous rice 89-63 (84-15 * close positive 23) and hybrid rice No. 1 (3027 * mill enlightening) and hybrid rice (84-15 * ((osmanthus finish No. 2 * reed big) * osmanthus is big)) etc., high-quality, high yield, better resistance all showed.Plant at Huanghuai region with the japonica rice 84-15 that this technology selects, on average increase production 15% than conventional rice kind Xindao 6811.
Fig. 1 is seed selection japonica rice apomixis 84-15 processes;
Fig. 2 is seed selection long-grained nonglutinous rice apomixis 3027 processes;
Fig. 3 is new No. 1 process during seed selection Japonica Hybrid kind 84-15 * happiness peak is;
Fig. 4 is for the seed selection obligate or near obligate apomixis hybrid rice variety process.
Describe the embodiment of the invention in detail below in conjunction with accompanying drawing.
Embodiment 1: with wild rice (O.longistaminata, chromosome set A
1A
1) do maternally to hybridize as male parent with cultivated rice (80-6195) and obtain hybrid seed.The seed of first filial generation plant selfing is received by strain system, fringe.The second filial generation plant separates, the seed of selfing (bleached hybrid colony 1,2,3), and by strain system, fringe is received.Hybrid third generation plant is isolated botanical character and identical three the different hybrid populations 1,2,3 of biological property (agamont) between the individuality, their economical character is different with maternal, male parent, and wherein hybrid population 2 is exactly a japonica rice apomixis 84-15.It is a high-yield rice kind, and the plant nutrition advantage is outstanding, leaf green, and the stem stalk is sturdy, 95～105 centimetres of plant heights, 28～30 centimetres of spike lengths, 200～300 of every total grain panicles are given real rate about 80%, thousand kernel weight 25～28 grams, rice matter is better.Maximum output reached 700 kilograms every mu in the popularization of Yanshi, Henan Province county in 1988,550 kilograms every mu of general output.
Long flower pesticide wild rice (O.longistaminata): perennial wild rice, from African Benin state, contain the apomixis gene, the rhizome breeding, tillering ability is strong, every strain is tillered 20～30, and blade is dark green, plant height 135～150cm, spike length 15～18cm, several 60～80 of main total grain panicle under field conditions (factors), is not eared; Artificial short-day is handled ability heading in 30～40 days in Beijing, and ripening rate 0.1% have the characteristics of self-incompatibillity, but when different friendship, pollen has vitality.Plant the long awns of skin black, thousand kernel weight 15～20 grams, blast resisting, middle bacterial blight-resisting, against-plant hopper.
80-6195: the japonica rice strain, plant height 110～115cm, spike length 20～25cm, 6～8 of every strain number of productive ears, leaf green, several 120～180 of main total grain panicle, ripening rate 85～90%, thousand kernel weight 24～25 grams, Huang Gu, seed do not have awns, the rice white belly is less, and quick-fried waist is arranged, in 170～180 days time of infertility of Beijing.Blast resisting and bacterial leaf-blight.
Embodiment 2: do maternally to hybridize as male parent with wild rice (O.longistaminata) and obtain hybrid seed with cultivated rice (bright extensive 63).The selfed seed of first-filial generation plant is by strain system, and fringe is received.The second filial generation plant is isolated botanical character and identical two the hybrid group of hills 1,2 inequality of biological property (agamont) between the individuality, their economical character is inequality with maternal, male parent, and wherein hybrid group of hill 2 is exactly short bar long-grained nonglutinous rice apomixis 3027.
Bright extensive 63: long-grained nonglutinous rice, plant height 120～125cm, spike length 25～30cm, effectively fringe is 5～8, blade light green, several 150～200 of main total grain panicle, ripening rate 75～80%, thousand kernel weight 20～24 grams, clever shell has purple point, the seed golden yellow, tip awn is arranged, and the grain of rice is opaque, and quick-fried waist is arranged, in 160～165 days time of infertility of Beijing, blast resisting.
Embodiment 3: do maternally to hybridize as male parent with sexual reproduction kind japonica rice happiness peak and obtain hybrid seed with japonica rice apomixis 84-15.The seed of first filial generation plant selfing, by strain system, fringe is received.The second filial generation plant is isolated four phenotypes: first, separated strain, botanical character between their individualities and biological property are diverse, award superseded, second, fixedly group of hill 1, botanical character between their individualities and biological property are identical (agamonts), and their economical character is different with two parents, and its yielding ability does not surpass high value parent, as like the peak, eliminate.The 3rd, fixedly group of hill 2, and botanical character between their individualities and biological property are identical (agamonts), their economical character is different with two parents, and its yielding ability surpasses high value kind, as the happiness peak, plant but surpass contrast,, eliminate as middle red No. 2.The 4th, fixedly group of hill 3, and botanical character between their individualities and biological property are identical (agamonts), their economical character is different with two parents, and its yielding ability not only surpasses high value parent, as the happiness peak, also surpass contrast and plant, as middle red No. 2; Therefore the hybrid third generation select agamont hybrid rice variety 84-15 * happiness peak of exceeding standard (through Beijing name in new No. 1).
The happiness peak: the cultivation japonica rice variety, introduce Beijing from Japan, plant type is good, plant height 90～95cm, spike length 18～20cm, 5～8 of every strain number of productive ears, leaf green, several 80～90 of main total grain panicle, ripening rate 80～85%, thousand kernel weight 20～25 grams, seed has tip awn, and rice matter is good, make the wheat stubble seed rice in Beijing and plant 600～800 jin of per mu yields, in 140～145 days time of infertility, blast resisting is than bacterial blight-resisting.
Embodiment 4: do maternal and facultative or obligate apomixis such as japonica rice 84-01 hybridize as male parent and obtains hybrid seed with facultative apomixis system as long-grained nonglutinous rice 89-63.The seed of first filial generation plant selfing, by strain system, fringe is received and the seed of the agamont that the super parent of screening exceeds standard, and botanical character and biological property between this seed second filial generation individuality are identical.Their economical character and first filial generation plant are identical or approximate, but are different with two parents.Therefore, just can select at second filial generation and be equivalent to the hybrid vigour that first filial generation has and can carry out obligate or near the apomictic hybrid rice variety of obligate, as 89-63 * 8401.
Claims (5)
1, a kind of breeding technique of paddy rice apomixis hybrid vigor fixing is characterized in that fixedly rice heterosis breeding technique, has six programs:
(1) breeding rice apomixis, seed selection have system's separation, system's heredity, fixedly the genetic tool japonica rice 84-15 and the long-grained nonglutinous rice 3027 of hybrid characteristics;
(2) apolegamy parent, selecting one of two parents or two parents all is apomixis, the paddy rice apomixis and the sexual reproduction rice varieties of seed selection high-quality, high yield better resistance, proterties complementation that coordinate force is high are done hybrid strain;
(3) parent that will match is hybridized, and obtains to contain the paddy rice hybrid of paddy rice apomixis gene;
(4) screening contains the genotype of paddy rice clonal seeds, by combination hybrid is sowed the field, the individual plant rice transplanting, and screening botanical character and biological property are different from father and mother's the good first generation of hybrid of comprehensive proterties;
(5) screening high-quality, high yield, many anti-paddy rice agamonts;
(6) carry out kind relatively, meet breeding objective, be i.e. high-quality, high yield, many anti-apomixis hybrid rice varieties in the screening of the hybrid third generation.
2, by the described breeding technique of claim 1, it is characterized in that doing maternally to hybridize as male parent with cultivated rice (80-6195) and obtain hybrid seed with wild rice (O.longistaminata), the seed of first filial generation plant selfing, receive by strain system, fringe, the second filial generation plant separates, the seed of selfing, by strain system, fringe is received, hybrid third generation plant is isolated botanical character and identical three the different hybrid populations 1,2,3 of biological property between the individuality, and wherein hybrid population 2 is exactly a japonica rice apomixis 84-15.
3, by the described breeding technique of claim 1, it is characterized in that doing maternally to hybridize as male parent with wild rice (O.longistaminata) and obtain hybrid seed with cultivated rice bright extensive 63, the selfed seed of first-filial generation plant is by strain system, fringe is received, the second filial generation plant is isolated botanical character and identical two the different hybrid group of hills 1,2 of biological property between the individuality, and wherein hybrid group of hill 2 is exactly short bar long-grained nonglutinous rice apomixis 3027.
4, by the described breeding technique of claim 1, it is characterized in that doing maternally to hybridize as male parent with sexual reproduction kind japonica rice happiness peak and obtain hybrid seed with japonica rice apomixis 84-15, the seed of first filial generation plant selfing, by strain system, fringe is received, the second filial generation plant is isolated four phenotypes: first, separated strain, botanical character between their individualities and biological property are diverse, award superseded, second, fixedly group of hill 1, botanical character between their individualities and biological property are identical, their economical character is different with two parents, its yielding ability does not surpass high value parent, as like the peak, eliminate, the 3rd, fixedly group of hill 2, botanical character between their individualities and biological property are identical, their economical character is different with two parents, and its yielding ability surpasses high value kind, as the happiness peak, but surpassing contrast plants, as middle red No. 2, eliminate the 4th, fixedly group of hill 3, botanical character between their individualities and biological property are identical, and their economical character is different with two parents, and its yielding ability not only surpasses high value parent, as like the peak, also surpass contrast and plant,, select agamont hybrid rice variety 84-15 * happiness peak that exceeds standard at the hybrid third generation as middle red No. 2.
5, by the described breeding technique of claim 1, it is characterized in that being with facultative apomixis, do maternally to hybridize as male parent as japonica rice 84-01 with facultative apomixis system and obtain hybrid seed as long-grained nonglutinous rice 89-63, the seed of first filial generation plant selfing, by strain system, fringe is received, the agamont that the super parent of screening exceeds standard, botanical character between the second filial generation individuality and biological property are identical, their economical character is identical or approximate with the first filial generation plant, but with two parents is different, therefore, just can select at second filial generation and to be equivalent to the hybrid vigour that first filial generation has and can to carry out obligate or near the apomictic hybrid rice variety of obligate, as 89-63 * 8401.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94118857A CN1065712C (en) | 1994-12-12 | 1994-12-12 | Hybrid vigor fixing breeding process for rice apomixis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94118857A CN1065712C (en) | 1994-12-12 | 1994-12-12 | Hybrid vigor fixing breeding process for rice apomixis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1124564A true CN1124564A (en) | 1996-06-19 |
| CN1065712C CN1065712C (en) | 2001-05-16 |
Family
ID=5039059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94118857A Expired - Fee Related CN1065712C (en) | 1994-12-12 | 1994-12-12 | Hybrid vigor fixing breeding process for rice apomixis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1065712C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101645C (en) * | 2000-02-13 | 2003-02-19 | 安徽省农业科学院 | Method for breeding dominant semi-short-stalked paddy-rice materials and application thereof |
| CN104704882A (en) * | 2012-10-09 | 2015-06-10 | 日本电气株式会社 | Method for exchanging information between communication terminals, and communication terminal |
| CN107896976A (en) * | 2017-12-07 | 2018-04-13 | 云南纳百川农业科技有限公司 | A kind of breeding method of Special rice apomixia hybrid vigor fixing |
| CN111919743A (en) * | 2019-10-22 | 2020-11-13 | 蒋廉斌 | Cultivation method and application of apomixis white villus rice seeds |
-
1994
- 1994-12-12 CN CN94118857A patent/CN1065712C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101645C (en) * | 2000-02-13 | 2003-02-19 | 安徽省农业科学院 | Method for breeding dominant semi-short-stalked paddy-rice materials and application thereof |
| CN104704882A (en) * | 2012-10-09 | 2015-06-10 | 日本电气株式会社 | Method for exchanging information between communication terminals, and communication terminal |
| CN107896976A (en) * | 2017-12-07 | 2018-04-13 | 云南纳百川农业科技有限公司 | A kind of breeding method of Special rice apomixia hybrid vigor fixing |
| CN111919743A (en) * | 2019-10-22 | 2020-11-13 | 蒋廉斌 | Cultivation method and application of apomixis white villus rice seeds |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1065712C (en) | 2001-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Vuylsteke et al. | Development and performance of balck sigatoka-resistant tetraploid hybrids of plantain (Musa spp., AAB group) | |
| Hall | Breeding for heat tolerance | |
| USHIYAMA et al. | High frequency of haploid production of wheat through intergeneric cross with teosinte | |
| CN103237441B (en) | Method for maintaining nuclear male sterility line of wheat cells | |
| Barrett et al. | Variation in expression of trimorphic incompatibility in Pontederia cordata L.(Pontederiaceae) | |
| CN101743902B (en) | Construction of Brassica napus recessive nuclear sterile near-isogenic line and single cross hybrid production technology | |
| CN109042292A (en) | A kind of hybrid rice seed breeding process of same period rice transplanting parent | |
| US20140068798A1 (en) | Multi-Seed Mutant of Sorghum for Increasing Grain Yield | |
| CN1813523A (en) | Wheat interspecific distant hybrid, secondary backcross and selfing breeding method | |
| CN112219717B (en) | Method for inducing and identifying haploid generated by corn | |
| CN1065712C (en) | Hybrid vigor fixing breeding process for rice apomixis | |
| CN115633635A (en) | Method for creating sweet corn DH line based on haploid breeding technology | |
| CN1159879A (en) | Technique for breeding of hybridized rice | |
| Okazaki | New aspects of tulip breeding: embryo culture and polyploid | |
| CN1486596A (en) | Cross breeding process of color trilinear cotton hybrid | |
| CN112042529A (en) | Breeding method of tetraploid rice | |
| CN108575732B (en) | Method for rapidly creating apomixis flax seeds | |
| CN116114593B (en) | Method for widening genetic variation of muskmelon by mixed pollination interspecific hybridization | |
| CN111955340B (en) | Germplasm with inhibiting effect on blue dwarf male-sterile/blue male-sterile Ms2 trait expression and breeding method thereof | |
| CN109362560B (en) | Breeding method of sterile line of wild patrinia type three-line indica rice | |
| CN114591967B (en) | Application of corn TCP gene in cross breeding | |
| CN113068604B (en) | Method for breeding male sterile line of sea salt black-headed cabbage and application | |
| Kapoor et al. | Barriers to Interspecific Hybridization Between Cucurbita pepo L. and Cucurbita moschata Duch. | |
| Yuan et al. | Hybrid rice in China—techniques and production | |
| CN114645097A (en) | Rice floral pillar length gene qSYL3, linked marker thereof and application thereof in breeding of rice genic male sterile line with high outcrossing maturing rate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |