CN103518618A - Method for breeding rice hybrid Lanyou2098 - Google Patents
Method for breeding rice hybrid Lanyou2098 Download PDFInfo
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- CN103518618A CN103518618A CN201310477710.9A CN201310477710A CN103518618A CN 103518618 A CN103518618 A CN 103518618A CN 201310477710 A CN201310477710 A CN 201310477710A CN 103518618 A CN103518618 A CN 103518618A
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Abstract
The invention provides a method for breeding a rice hybrid Lanyou2098. According to the method, the heterosis theory is utilized, selfing lines with good agriculture shapes, good stability, excellent rice quality and far parent relation are selected for hybridization, and the rice hybrid Lanyou2098 which is high in yield and nosotropic is bred; the Lanyou2098 is bred by taking a three-line sterile line Lan A as a female parent and a self-fertile restorer R2098 as a male parent, wherein the three-line sterile line Lan A is a hybrid which is bred by hybridization of Zhong 9 A//H27/Qiu B through backcross of 8 generations; the self-fertile restorer R2098 is a hybrid which is bred by composite hybridization of Guanghui 998/R273 as a female parent, which is bred through continuous selfing of 9 generations, and a self-optional high-quality restorer material R1899 as a male parent in a coeno-speciesbreeding manner by planting and separating and selfing breeding for continuous 8 generations.
Description
Technical field
The present invention relates to a kind of selection of hybrid rice seed, is the method for utilizing Three-line rice method seed selection New Hybrid Rice Combination.
Background technology
Along with growth in the living standard, people more and more come higher to the quality requirements of rice. in South of Guangxi rice workspace, the cultivated area of late rice sensitization at present or weakly sensitivity hybrid combination is occupied larger proportion, this sensitization in several years or weakly sensitivity hybrid rice are to win excellent combination, Qiu You combination and U.S. be excellently combined as master, the rich excellent combination rice of paddy rice matter is more excellent but premunition is poor, more excellent but the difficult production of hybrid seeds of Qiu You and U.S. excellent combination meter matter, high cost, part combination is the ripe Cold Dew wind that easily meets late, can not meet well market demands, seed selection is precocious, high-quality, the new combination of paddy rice disease-resistant and the easy production of hybrid seeds is imperative.Seed selection indica type high-quality hybrid in evening newly combines, and impels the update of my rice region in South of Guangxi, district indica type variety in evening, meets the market demand of rice region in South of Guangxi Xian kind in evening, ensures the stable development of my district's grain-production.
Summary of the invention
The object of the invention is to utilize hybrid vigour theoretical, select that agronomic shape is good, good stability, rice is of fine quality, parents' affiliation is far away hybridization between selfed lines, select high yield, hybrid rice seed that resistance against diseases is strong.
The invention provides the selection of a kind of hybrid rice seed blue excellent 2098, comprise Breeding of Inbred Lines, the safety isolation of hybrid seeding, arrange the wrong phase, the suitable row ratio in field is inserted in the production of hybrid seeds, the roguing of production of hybrid seeds process, results in good time, utilize excellent 2098 hybrid rice seeds of orchid that high-quality three is the blue A of male sterile line and self-fertile high-quality restorer R2098 cross breeding high yield, resistance against diseases is strong.Blue excellent 2098 is that the blue A of male sterile line is maternal and self-fertile restorer R2098 is that paternal hybrid is bred as by three, used three be the blue A of male sterile line be with in the crossbreed of nine A//H27/ autumn B group gas-mixing hybridizations, through backcrossing, in 8 generations, were bred as, and self-fertile restorer R2098 be take wide extensive 998/R273 selfing of continuous 9 generations incubation as maternal, free high-quality restorer R1899 is that male parent is carried out multiple cross group gas-mixing hybridization kind, through planting separation, colony is stable, shape is consistent, and directed choosing is continuous 8 generations selfing improved variety extremely.In order to select, output is high, excellent 2098 rice paddy seeds of the orchid of quality better, and this breeding process is greater than 500 meters with other non-hybrid seed production of hybrid seeds paddy rice space safety of the present invention isolation, the time be separated by 15 days above to the isolation of pollinating of Parent heading flowering period.In order to make maternal and male parent pollinate in best period, obtain excellent 2098 rice paddy seeds of kind orchid good, that income is high, reasonable arrangement of the present invention poor date of seeding, in spring, select first to broadcast male parent, preferably female parent is sowed when male parent leafing 7.0 leaf; In summer and autumn, also select first to broadcast male parent, preferably maternally after male parent is broadcast, sow 15-17 days time.In order to ensure the enough number of productive ears of Parent, improve pollination availability, the female parent of breeding rice crossbreed blue excellent 2098 and the proportioning of male parent are 2:0.35, the present invention preferably inserts 13.2 * 16.5 centimetres of kind of maternal seeding row spacings used, 27 * 20 centimetres of male parent seeding row spacings, duplicate rows isosceles triangle is inserted, 33.3 centimetres of working paths, parental 2:10～12, row is to according to field shape and wind direction, as far as possible vertical with heading flowering period predominant wind, so both guaranteed the availability in space, can guarantee again the abundance of oxygen and sunlight required in parents'growth process, more be conducive to the pollination of heading flowering period, the Lan You quality and yield of 2098 rice seed is provided, make it promote better and meet people's grain demand.
The blue A of above-mentioned good quality male sterile line with in nine A//H27/ autumn B, wherein H27 is free maintenance material, the crossbreed of group gas-mixing hybridization was bred as through 8 generations that backcrossed, to apply for new variety of plant protection.These male sterile line leaf sheath purple lines, dark green leaf color look, auricle look green, tip of a leaf length is long, tip of a leaf shape two is split, the two leaf fine hair that fall are thinner, sword-like leave blade degree of circumnutating is just rolled up, in sword-like leave length, in sword-like leave width, openness angle of flag leaf is upright, angle of glume opening is large, open grain husk the time long, during flower, scope is long, during flower, peak early, the water stain shape of flower pesticide, column cap purple, in cane length, in cane thickness, cane angle is upright, cane base portion stipes bag, in spike length degree, fringe degree of stretching out is partly extracted out, the vertical shape of fringe is sagging, grain husk shell fine hair is many, grain husk pointed tip is red, the length of the longest awns is extremely short, in number of grain per ear, sterile lemma look white, grain husk shell look stalk is yellow, grain shape elongated shape, in thousand kernel weight, in brown rice, spin the shape of hanging down, plant skin light yellow, sterile plant rate is high, the restorability of male sterile line is good.The biomaterial H27 wherein the present invention relates to is free maintenance material, in nine A, autumn B, wide extensive 998, R273 is all open at non-patent literature.
The invention has the beneficial effects as follows:
1.. output is higher: within 2012, Guangxi District pilot cultivation result is 501.4 kilograms of five pilot average yield per mus, than rich excellent 253 (CK), increases production 5.45%, reaches utmost point significance level; Best in quality: rice matter outward appearance is better, and commodity is good.
2.. better resistance: through Institute of Plant Protection, Guangxi resistance (2011-2012): 5 grades of seedling leaf pest, rice blast resistance composite index 6.0～7.0; 5～7 grades, bacterial leaf-blight IV type, 9 grades of V-types.
3. wide adaptability: in rice region in South of Guangxi late rice and osmanthus, the Region in Late seed rice of rice workspace south suitable planting photosensitive type kind is planted.
4. meter matter is better: through Ministry of Agriculture's rice and quality of item supervision inspection center (2011), detect, brown rice rate 81.4%, head rice rate 60.5%, aspect ratio 3.2, chalk rice rate 43%, chalkiness degree 3.6%, 64 millimeters of glue denseness, amylose content 21.3%, rice matter index reaches edible rice varieties quality promulgated by the ministries or commissions of the Central Government 3 etc.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, to make those skilled in the art can implement according to this with reference to specification word.
Embodiment 1: the concrete Breeding Process of hybrid rice seed of the present invention blue excellent 2098
Blue excellent 2098 is to be that the blue A of male sterile line is that maternal and self-fertile restorer R2098 are that paternal hybrid is bred as by three, three be the blue A of male sterile line be with in the crossbreed of nine A//H27/ autumn B group gas-mixing hybridizations, through backcrossing, in 8 generations, were bred as; Self-fertile restorer R2098 be take wide extensive 998/R273 selfing of continuous 9 generations incubation as maternal, and free high-quality restorer R1899 is that male parent is carried out multiple cross group gas-mixing hybridization kind, and through planting separation, colony is stable, and shape is consistent, and directed choosing is continuous 8 generations selfing improved variety extremely.
Embodiment 2: the main point of production technology of hybrid rice seed of the present invention blue excellent 2098
1, maternal pairing backcrossing is purified and is bred original seed, avoids using many generation breedings kind, and male parent original seed single-plant propagation, guarantees male parent, female parent kind property and hybrid vigour.
2, the blue excellent 2098 seed production technique main points of crossbreed:
(1) safety isolation: be greater than 500 meters with other non-hybrid seed production of hybrid seeds paddy rice space safety isolation of the present invention, the time be separated by 15 days above to the isolation of pollinating of Parent heading flowering period.
(2) reasonable arrangement poor date of seeding: first broadcast male parent in spring, maternally sow when male parent leafing 7.0 leaf; In summer and autumn, first broadcast male parent, maternal after male parent is broadcast, sow 15-17 days time.
(3) use sufficient parental seed, guarantee the enough number of productive ears of Parent: maternal 2.0 kilograms of female sowing quantity, 0.35 kilogram of male parent.
(4) rational close planting, suitable row ratio: 13.2 * 16.5 centimetres of seeding row spacing female parents, 27 * 20 centimetres of male parent seeding row spacings, duplicate rows isosceles triangle is inserted, 33.3 centimetres of working paths, parental 2:10～12.Row is to according to field shape and wind direction, as far as possible vertical with heading flowering period predominant wind.
(5) timely and appropriate discovery sprays " 920 ", carry out artificial supplementary pollination: 8～12 grams of " 920 " total amounts for mu, the spray of beginning when female parent is shown in fringe 20～25%, continuous spraying three times, single spraying is maternal for the first time, second and third Parent is with spray, and 1 gram/acre of last single spraying male parent, makes male parent higher 20～25 centimetres than maternal.From fringe phase beginning to the whole artificial supplementary pollination in flowering stage every day at florescence of neat fringe, the principle of carrying out when male parent occurs containing flower, artificial supplementary pollination every day 2～3 times, continuous 7～8 days are adhered in artificial supplementary pollination.
(6) carry out the extermination of disease and insect pest: main control in early stage snout moth's larva, rice leaf roller, banded sclerotial blight etc., extermination of disease and insect pest key period middle and later periods, after fringe phase beginning, full heading time and pollination finish, is selected counterpart pesticide control rice blast, rice kernel smut and rice fulgorid, snout moth's larva, rice leaf roller, banded sclerotial blight etc.
(7) the removal of impurities pure keeping technology of roguing: pull out External Characters and the discrepant plant of Parent such as form, breeding time whole breeding time.
Embodiment 3: the culture technique of hybrid rice seed blue excellent 2098
(1) begin sowing in good time, cultivate of the right age strong seedling: late rice is sowed at the beginning of early July, 5.0～5.5 leaf ages are transplanted, and rice transplanting 2.5～3.5 leaf ages are advisable.
(2) rational close planting: cultivate of the right age strong sprout, rational close planting, Basic Seedling is advisable with 6-7 ten thousand seedling/mus, 16.5 centimetres of transplanting specification 23 cm x or rice transplanting 18000 root and stem of certain plants left and right.
(3) medium fertility fertilising: 12～13 kilograms of mu purity nitrogens, nitrogen phosphoris and potassium fertilizer ratio is 1:0.5:1.Use sufficient base manure, early execute tillering fertilizer, short low position tiller Cheng great Sui, the middle and later periods is suitably controlled nitrogen, Potassium.
(4) transplant rear shallow water and turn green, thin moisture tiller, enough seedlings open field, appropriate dry field control seedling; Panicle spike primordium differentiation stage is executed ear manuer in good time, and the thin water of heading flowering period is irrigated, and maturing stage alternation of wetting and drying, prevents from cutting off the water supply too early.
(5) integrated control damage by disease and insect.
Although embodiment of the present invention are open as above, but it is not restricted to listed utilization in specification and embodiment, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other modification, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and the embodiment that illustrates with describe here.
Claims (7)
1. a selection for hybrid rice seed blue excellent 2098, is characterized in that, described orchid excellent 2098 is to be that the blue A of male sterile line is maternal and self-fertile restorer R2098 is that paternal hybrid is bred as by three.
2. the selection of hybrid rice seed according to claim 1 blue excellent 2098, is characterized in that, described three be the blue A of male sterile line be with in the crossbreed of nine A//H27/ autumn B group gas-mixing hybridizations, through backcrossing, in 8 generations, were bred as.
3. the selection of hybrid rice seed according to claim 1 blue excellent 2098, it is characterized in that, described self-fertile restorer R2098 is that what be take that wide extensive 998/R273 selfing of continuous 9 generations is bred as is female parent, free high-quality restorer R1899 is that male parent is carried out multiple cross group gas-mixing hybridization kind, through planting separation, continuous 8 generations selfing is bred as.
4. the selection of hybrid rice seed according to claim 1 blue excellent 2098, it is characterized in that, this breeding process is greater than 500 meters with other non-hybrid seed production of hybrid seeds paddy rice space safety of the present invention isolation, the time be separated by 15 days above to the isolation of pollinating of described Parent heading flowering period.
5. the selection of hybrid rice seed according to claim 1 blue excellent 2098, is characterized in that, first broadcast male parent spring, described female parent is sowed when male parent leafing 7.0 leaf; First broadcast male parent summer and autumn, described female parent is sowed 15-17 days time after male parent is broadcast.
6. the selection of hybrid rice seed according to claim 1 blue excellent 2098, is characterized in that, the proportioning of described female parent and male parent is 2:0.35.
7. the selection of hybrid rice seed according to claim 1 blue excellent 2098, it is characterized in that, 13.2 * 16.5 centimetres of described maternal seeding row spacings, 27 * 20 centimetres of male parent seeding row spacings, duplicate rows isosceles triangle is inserted, 33.3 centimetres of working paths, parental 2:10～12, row is to according to field shape and wind direction, as far as possible vertical with heading flowering period predominant wind.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1826873A (en) * | 2006-01-10 | 2006-09-06 | 江苏丘陵地区镇江农业科学研究所 | Seed-breeding and seed-producing method of hybrid rice II You 42 |
| CN101919351A (en) * | 2009-06-11 | 2010-12-22 | 北京金色农华种业科技有限公司 | Production method of hybrid rice |
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- 2013-10-14 CN CN201310477710.9A patent/CN103518618A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1826873A (en) * | 2006-01-10 | 2006-09-06 | 江苏丘陵地区镇江农业科学研究所 | Seed-breeding and seed-producing method of hybrid rice II You 42 |
| CN101919351A (en) * | 2009-06-11 | 2010-12-22 | 北京金色农华种业科技有限公司 | Production method of hybrid rice |
Non-Patent Citations (4)
| Title |
|---|
| 无: "2013年广西壮族自治区审定品种——兰优2098", 《中国水稻信息网，HTTP://WWW.CNRRI.ORG/VARIETY /SHENDING/201308/7065.HTML》 * |
| 朱伦: "灵山县2012年晚稻新品种小区试验初报", 《安徽农学通报》 * |
| 李永青等: "两系杂交水稻新组合Y两优087的选育及应用", 《杂交水稻》 * |
| 李永青等: "杂交水稻晚籼新组合兰优1972的选育及应用", 《广西农业科学》 * |
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Application publication date: 20140122 |