CN101663992A - Cultivation method of high-grain weight excellent-quality ternary hybrid rice variety - Google Patents
Cultivation method of high-grain weight excellent-quality ternary hybrid rice variety Download PDFInfo
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Abstract
The invention relates to a cultivation method of a high-grain weight excellent-quality ternary hybrid rice variety, belonging to the technical field of plant breeding. The cultivation method comprisesthe following steps: using strong excellent-quality restorer line Zhenhui 084 as a male parent and Zhenhui 129 as a female parent for hybridization with groups; after inbred selection, adopting a wide-narrow-row high-fertilizer sparse planting culture mode from an F3 generation to carry out bacterial blight inoculation identification and screen high-grain weight and appearance quality by generations; measuring and combining the F3 generation with II-32A to identify a restoration degree; measuring and combining an F5 generation with an excellent-quality male sterile line Tianfeng A; culturinga strong excellent-quality restorer line 1126 with excellent plant types, disease resistance, high grain weight, high restoration degree and excellent rice quality; and producing hybrid seeds by the excellent-quality male sterile line Tianfeng A and Yanhui 1126 to obtain a new ternary hybrid rice variety 1126 with compact plant types, strong disease resistance, stable high production, high grain weight and high rice quality reaching an international excellent-quality rice level.
Description
One, technical field
The breeding method of a kind of high-grain weight excellent-quality ternary hybrid rice variety of the present invention belongs to field of plant variety breeding technology, more specifically says so to be exclusively used in seed selection high-grain weight excellent-quality ternary hybrid long-grained nonglutinous rice new varieties.
Two, background technology
Along with the rapid expansion of world population, global arable area reduces year by year, and frequent natural calamity takes place, and grain growth is slow day by day, and the new century grain security has become the focus of international community's common concern.The long-term cultivated area of China hybrid rice accounts for about half of paddy rice cultivated area, the seed selection of China hybrid rice and be applied as China and even significant contribution has been made in the grain-production in the world.The raising total grain output especially main path of paddy rice gross output still utilizes kind to upgrade the raising per unit area yield, and the while, the requirement of high-grade rice new varieties was also more and more higher along with living standards of the people improves constantly.Therefore how anti-hybridization long-grained nonglutinous rice new varieties drop into the Rice Production application to press for good quality and high output.
Draw through colleague's research both at home and abroad for many years, increasing grain heavily is the important channel of improving hybridization rice variety per unit area yield, the heavy hybrid rice variety of high grain of producing upward application at present is as " II excellent 42 ", " II excellent 838 " etc., though output is higher, exist the unexcellent defective that does not promptly reach GB superior rice standard of quality.
Three, summary of the invention
Technical problem
The present invention is directed to the problems and shortcomings that exist in the above-mentioned existing background technology, cultivate in scheme and the selection through experimental study for many years at many hybrid rices, a kind of breeding method with high grain weight, excellent-quality ternary hybrid rice variety is provided, can well realize the problem that goal of the invention exists with the solution prior art, and successfully select heavy, the excellent-quality ternary hybrid long-grained nonglutinous rice new varieties of high grain.
Technical scheme
The breeding method of high-grain weight excellent-quality ternary hybrid rice variety provided by the invention may further comprise the steps:
A) being that town extensive 084 makes male parent to recover, is that extensive 129 works in town are maternal to recover, and hybridizes to obtain F
0Seed;
B) in 6 generations of selfing then,, selfing limit, limit is selected, and selects anti--middle bacterial blight-resisting, sick level 0-3 level, blade is very short, and the length of 1,2,3 leaves is 40-45cm, the plant type compactness, thousand kernel weight 30-31 gram, the individual plant of the white rate of chalk≤30%, chalkiness degree≤5%, transparency 1-2 level;
From selfing 3 generation F
3Beginning, take the capable 33cm+16.5cm of width, spacing in the rows 16.5cm, high fertile mu to execute the planting type that pure N17 kilogram, thin planting mu are planted 1.5 ten thousand caves, carry out bacterial leaf-blight inoculation resistance by generation and identify and carry out thousand kernel weight 30-31 gram and the white rate of exterior quality chalk≤30%, chalkiness degree≤5%, transparency 1-2 level are screened; From selfing 3 generation F
3Beginning and three is that hybrid combination is joined in male sterile line II-32A survey, measures its restoring degree, requires restoring degree, and promptly the ripening rate of institute preparing hybrid rice is more than 85%;
From selfing 5 generation F
5Beginning and three is that hybrid combination is joined in the rich A survey in male sterile line sky, also measures its restoring degree, collects the paddy of surveying extensive evaluation sub-district simultaneously and carries out the mensuration and the screening of exterior quality, selfing 6 generation F
6It is extensive 1126 to cultivate superior restorer line salt, and this kind plant height 110-115cm, blade are very short, promptly fall 1,2, the length of 3 leaves is 40-45cm, and the leaf look moderate, and blade is straight and upright, stem total leaf number 17-18 opens, 5 elongation internodes, and sowing is to earing 105-108 days, the 138-140 days time of infertility, spike length 25-27 centimetre, every total grain panicle 160-165 grain, the real grain of every fringe 145-150 grain, ripening rate is more than 90%, thousand kernel weight 30-31 gram, no awns, the white rate 30% of chalk, chalkiness degree 5%, transparency 1-2 level, column cap is colourless, the restoring degree height, promptly the ripening rate of institute preparing hybrid rice resists-middle bacterial blight-resisting more than 85%, sick level 0-3 level, it is smooth to open grain husk.
With three is that rich A in male sterile line sky and the described recovery of claim 1 are that salt extensive 1126 carries out the production of hybrid seeds, obtains triple crossing long-grained nonglutinous rice new varieties sky Feng You 1126, and a day Feng You 1126 makes rice culture in the wheat stubble in Yancheng, Jiangsu, in the 139-140 days time of infertility, ripe three-line indica hybrid rice type in the genus is about plant height 115-120cm, stem leafing in all one's life 17-18 opens, 5 elongation internodes, and cane is sturdy, the plump stem degree of embracing of leaf sheath is good, does not reveal joint, and three functional leafs in top are straight and upright, lift the blue or green seed Huang of bar, the percentage of earbearing tiller 65-70% when ripe on the sword-like leave, effective fringe 16-17 ten thousand/mu, spike length 25-28cm, every total grain panicle 170-175 grain, the real grain of every fringe 150-155 grain, ripening rate is more than 88%, and thousand kernel weight 29-30 restrains, and seed holding is medium, it is yellow that grain is, brown rice rate 75.0%, polished rice rate 63.7%, head rice rate 52.0%, grain length 7.2mm, aspect ratio 3.1, the white rate 28% of chalk, chalkiness degree 4.7%, 3 grades of transparencies, disappear 5 grades of values of alkali, glue denseness 70mm, amylose content 21.2%; The every index of rice quality all reaches three grades of superior rice standards of GB.
The producing method for seed of it Feng You 1126 is the sowing of extensive 1126 minutes two phases of male parent salt, I phase male parent is sowed by the end of April, II phase male parent was than I phase male parent late sowing 10 days, maternal early June sowing, broadcast 32 days poor time differences with I phase male parent, leaf difference 6.5-7.0 leaf, seed farm father and mother one's own profession ratio is 2: 12, I, single this alternate the planting of II phase male parent, maternal seeding row spacing 13cm * 16.5cm.
Beneficial effect
Compared with prior art, the breeding method of a kind of high-grain weight excellent-quality ternary hybrid rice variety of the present invention has following advantage and good effect:
1, adopt the breeding method of a kind of high-grain weight excellent-quality ternary hybrid rice variety provided by the present invention, breeding the more excellent recovery of high grain heavy rice matter is salt extensive 1126: this kind plant height 110-115cm, blade are very short, promptly fall 1,2, the length of 3 leaves is 40-45cm, plant type is good, and the leaf look moderate, and blade is straight and upright, fall 1,2, the length of 3 leaves is 40-45cm, stem total leaf number 17-18 opens, 5 elongation internodes, and sowing is to earing 105-108 days, the 138-140 days time of infertility, spike length 25-27 centimetre, every total grain panicle 160-165 grain, the real grain of every fringe 145-150 grain, ripening rate is more than 90%, high grain is heavy, thousand kernel weight 30-31 gram, and column cap is colourless, no awns, the white rate 30% of chalk, chalkiness degree 5%, transparency 1-2 level, column cap is colourless, the restoring degree height, the ripening rate that is institute preparing hybrid rice is more than 85%, anti--middle bacterial blight-resisting, sick level 0-3 level, it is smooth to open grain husk, the pollen amount foot is beneficial to the raising hybrid seed yield.
2, adopt the breeding method of a kind of high-grain weight excellent-quality ternary hybrid rice variety provided by the present invention, breed high-grain weight excellent-quality ternary hybrid long-grained nonglutinous rice new varieties sky Feng You 1126:
A) stable high yield, yield potentiality is big
2005, participate in this institute hybrid rice and newly make up the evaluation garden, 636.2 kilograms of average yield per mus, comparison is according to Shanyou 63 volume increase 12.5%; 2006, continue to participate in this institute hybrid rice and newly make up the evaluation garden, 639.1 kilograms of average yield per mus, comparison is according to Shanyou 63 volume increase 11.03%; 2007, participate in this institute hybrid rice and newly make up the sub-district variety comparative test, 628.3 kilograms of average yield per mus, comparison is according to excellent 084 volume increase 3.2% of II; 2008, participate in this institute hybrid rice and newly make up the Da Qu variety comparative test, 638.6 kilograms of average yield per mus, comparison is according to excellent 084 volume increase 6.1% of II.
B) rice is of fine quality, and commodity is good
They Feng You 1126 grain are wealthy avette, slightly elongated and full, yellow, and grain of rice transparency is good, and the trusted subordinate is in vain little, and rice is of fine quality, good palatability.2008 according to the test of Ministry of Agriculture's rice and quality of item supervision and inspection center: brown rice rate 75.0%, polished rice rate 63.7%, head rice rate 52.0%, grain length 7.2mm, aspect ratio 3.1, the white rate 28% of chalk, chalkiness degree 4.7%, 3 grades of transparencies, disappear 5 grades of values of alkali, glue denseness 70mm, amylose content 21.2%.The every index of rice quality all reaches three grades of superior rice standards of GB.
C) comprehensive proterties is outstanding, easily cultivation
They Feng You 1126 seedling are short strong, the short and thick lilac of bud scale, and blade is very short, leaf look pale green, tillering ability is stronger, tillers to take place early to concentrate, and low joint position is tillered many.Become the strain plant type collecting and distributing moderate, plant height 115-120cm, stem leafing in all one's life 17-18 opens, 5 elongation internodes, cane is sturdy, and the plump stem degree of embracing of leaf sheath is good, does not reveal joint, and three functional leafs in top are straight and upright, be subjected to the light attitude good, lift on the sword-like leave when ripe and be the straw mulch top, the blue or green seed yellow maturity lover of bar.Percentage of earbearing tiller 65-70%, general every mu of effective fringe 16-17 ten thousand, spike length 25-28 centimetre, the big grain of fringe is heavy, and every total grain panicle is counted the 170-175 grain, the real grain of every fringe 150-155 grain, ripening rate is more than 88%, and thousand kernel weight 29-30 restrains, and seed holding is medium, and it is yellow that grain is, and plumpness is good.In 139-140 days 1126 time of infertility of its Feng You, than precocious 1-2 days of Shanyou 63, ripe three-line indica hybrid rice type in the genus, crops for rotation adaptability is good, and barley and wheat or rape crops for rotation all can be planted.
D) disease resistance is outstanding, and yield stability is good
To contain the dominance wide spectrum high anti-from leaf blight gene Xa-7 and bacterial leaf spot resistant gene Xa-4 because of one of parent of salt extensive 1126 town extensive 084, they excellent 1126 better resistances, 2008 according to Institute of Plant Protection, academy of agricultural sciences, Jiangsu Province inoculation qualification result: bacterial leaf spot resistant JS49-6 pathogenic strain (1 grade), bacterial leaf spot resistant KS-6-6 pathogenic strain (1 grade), middle sense bacterial leaf spot Zhejiang 173 and PX079 pathogenic strain (5 grades), to rice blast ZA5, ZB13, ZC5, ZD5, ZE3, ZF1, (Institute of Plant Protection, academy of agricultural sciences, Jiangsu Province externally serves ZG1, bacterial strain is public) etc. all immunity of 7 biological strains, sick level is 0 grade, anti-panicle blast
(1 grade), sense banded sclerotial blight (S), anti-stripe virus disease (R).Because it Feng You 1126 canes are sturdy, leaf sheath is embraced the stem consolidation, has fertilizer resistance anti-lodging performance preferably.
Four, description of drawings
Fig. 1 is of the present invention day Feng You 1126 breeding pedigree schematic diagrames
The extensive 1126 classification called after paddy rice (Oryza sativa) of salt are preserved in China Committee for Culture Collection of Microorganisms common micro-organisms center on May 31st, 2009, and preserving number is: CGMCC No.3112.
Five, embodiment
Further specify the breeding method of high-grain weight excellent-quality ternary hybrid rice variety below in conjunction with accompanying drawing.
1, breeding method:
A) select that plant type is compact, to contain that the fast elongated of growing thickly recovers be that special blue or green blood lineage and bacterial leaf spot resistant ospc gene, extensive 084 (Zhengjiang City, knob, the Jiangsu institute of agricultural sciences can buy) in colory good superior restorer line town are made male parent, select that plant type is compact, containing the fast elongated of growing thickly, to recover to be that special blue or green blood lineage's extensive 129 (Zhengjiang City, knob, the Jiangsu institute of agricultural sciences can buy) in good superior restorer line town are done maternal, hybridize to obtain F
0Seed.
B) in 6 generations of selfing then,, selfing limit, limit is selected, and is chosen in anti--middle bacterial blight-resisting under the artificial inoculation conditions, promptly sick level 0-3 level; Plant type compactness, blade are very short, and the length of 1,2,3 leaves is 40-45cm, and is subjected to the light attitude good; Thousand kernel weight 30-31 gram, transparency 1-2 level, exterior quality is more excellent, the fine individual plant of the white rate of chalk≤30%, chalkiness degree≤5%.
From selfing 3 generation F
3Beginning is taked the capable 33cm+16.5cm of width, spacing in the rows 16.5cm, high fertile, mu is executed pure N17 kilogram, thin planting, mu is planted the planting type in 1.5 ten thousand caves, carry out bacterial leaf-blight inoculation resistance by generation and identify, require bacterial blight-resisting, promptly sick level 0-3 level, carry out the heavy and exterior quality screening of height grain simultaneously, require thousand kernel weight 30-31 gram, the white rate of rice quality leading indicator such as chalk≤30%, chalkiness degree≤5% are selected transparency 1-2 level;
From selfing 3 generation (F
3) beginning and large tracts of land produce to go up use wider three to be that male sterile line II-32A (buying to China Paddy Rice Inst) surveys and joins hybrid combination, measures its restoring degree, the hybrid rice combination ripening rate that requires preparation is more than 85%, and hybrid vigour is strong;
From selfing 5 generation (F
5) beginning is that hybrid combination is joined in the rich A in male sterile line sky (paddy rice is bought to the academy of agricultural sciences, Guangdong Province) survey with high-quality three, also measure its restoring degree, require the hybrid combination ripening rate more than 85%, and hybrid vigour is strong, collects the paddy of surveying extensive evaluation sub-district simultaneously and carry out the mensuration and the screening of exterior quality; Selfing 6 generation F
6Cultivate and have that the leaf attitude of strain is good, disease resistance is strong, anti--middle bacterial blight-resisting, sick level 0-3 level, high grain is heavy, thousand kernel weight 30-31 gram, restoring degree height, the ripening rate of the crossbreed of disposing are more than 85%, and rice matter is more excellent, the white rate of rice quality leading indicator such as chalk≤30%, chalkiness degree≤5%, the superior restorer line salt extensive 1126 of transparency 1-2 level.
C) widely used high-quality three is that rich A in male sterile line sky and above superior restorer line salt extensive 1126 carry out the production of hybrid seeds with producing upward again, acquisition has the plant type compactness, disease resistance is stronger, anti--middle bacterial blight-resisting, stable high yield, high grain are heavy, and thousand kernel weight 29-30 gram, rice matter reach the triple crossing long-grained nonglutinous rice new varieties sky Feng You 1126 of three grades of superior rices of GB.
Concrete breeding is through seeing Table 1.
Table 1: high-grain weight excellent-quality ternary hybrid long-grained nonglutinous rice new varieties sky Feng You 1126 seed selections process of the present invention
2, day Feng You 1126 culture technique main points:
Plant experimentally the output structure that day Feng You 1126 per mu yields are 600 kilograms through test: every mu of 16-17.0 ten thousand fringes, 170 of every total grain panicles, 150 of the real grains of every fringe, ripening rate 88%, thousand kernel weight 29-30 gram.High-yield culturing should be given full play to the advantage of the big grain of its big fringe, and on the basis of suitable spike number, it is heavy to attack big of big fringe guarantor.Promptly by cultivating the strong seedling of many tillers, rational close planting urgees early to send out early enough seedlings, and raising colony quality is accomplished fluently the high yield basis, and on the basis of guaranteeing suitable spike number, the short strong big fringe of bar is taken back again aim of high yield thereby reach big of fringe foot fringe.The technical essential that should grasp is:
A) proper seeding is cultivated the strong seedling of of the right age many tillers.
The suitable sowing time of it Feng You 1126, because of its ripe phase early, do the plantation of wheat stubble semilate rice in Jiangsu, heading mid-August of general grasp hybridization medium rice is more suitable, and cultivating the strong seedling of of the right age many tillers simultaneously is the basis of capturing rice high yield, generally sow to the first tenday period of a month in May by the end of April, rice seedling bed mu seeding quantity 10-12 kilogram, non-irrigated seedling rice seedling bed mu seeding quantity 30-40 kilogram, premature rice is wanted rare will sparing, and reinforcement rich water quality management in seedling stage and diseases and pests controlling, cultivate the strong seedling of of the right age many tillers.
B) expand row fall close, control astogeny starting point.
They 1126 seedling stages of Feng You, property in great numbers was good, stooling is stronger, reduces by suitable expansion line-spacing and plants density, reduces the astogeny starting point, help forming high yield colony, general June, early and middle ten days was transplanted, length of time rice seedlings grow 35-40 days, in, going up fertility field piece, to plant density be 1.5-1.8 ten thousand cave/mus, seeding row spacing 27-30cm * 13.3cm, every cave 1-2 this, the 3-4 seedling, basic seedling 6-7 ten thousand/mu, fertility field piece is preferably planted density and also can suitably be reduced again.To accomplish the shallow year even 2-2.5cm of inserting during transplanting, to prevent that carrying the stiff seedling in back does not send out.
C) fertile water transfer control, it is dynamic to create high yield colony.
The fertilising of rationally planning strategies for is the Key Cultivation Technology that realizes Rice Production " highly efficient and productive, high-quality ".The method that fertilizer application adopts balance to promote accomplishes that nitrogen, phosphorus, potassium are reasonably combined.The high-yield culturing that per mu yield is 650 kilograms, the total fertilizer requirement of Honda is amounted to purity nitrogen 15-18 kilogram/mu, grasps base manure, tillering fertilizer and ear manuer ratio and is advisable with 4: 3: 3.Water starch management is grasped the water-saving irrigation principle, guaranteeing moistening short seedling under the prerequisite that rice seedling is early sent out, surely sent out, when colony such as sends at the fringe seedling, the field is put in draining, the control peak seedling is no more than 240,000/mu, and heading flowering period keeps water layer, intermittent irrigation, alternation of wetting and drying between the productive phase of being in the milk, ripe and harvested dehydration in preceding 5 days be must guard against and cut off the water supply too early.
D) insect pests, the fringe of keeping a full stand of seedings is protected good harvest.
Between breeding time, note carrying out the preventing and controlling of rice blast, rice thrips, aphid, snout moth's larva and damage by disease and insect such as rice fulgorid and banded sclerotial blight, guarantee the rice seedling normal growth.
3, day Feng You 1126 seeding technique main points:
A) rationally arrange to broadcast the poor phase, guarantee that flower synchronization is good.
It Feng You 1126 is in the production of hybrid seeds of Yancheng, Jiangsu, and male parent is divided the sowing of two phases, and I phase male parent is sowed by the end of April, and II phase male parent was than I phase male parent late sowing 10 days.Maternal early June sowing is broadcast 32 days poor time differences with I phase male parent, leaf difference 6.5-7.0 leaf, and the such time difference and leaf are poor, and the general florescence can meet well.Under the special climate condition, enter after the ear differentiation, fixed point stripping is regularly looked into, and in time grasps this developmental process of father and mother, finds that flower synchronization is bad, in time regulate the florescence, and the florescence adjusting can be adopted water, fertilizer or methods such as " 920 ".
B) cultivate strong seedling, suitable row ratio is participated basic seedling.
Cultivating strong seedling, is the basis that increases the total grain husk flower of unit are amount, obtains seed production and high-yield.3-4 on male parent band was tillered when general strong seedling required to transplant, and 1-2 on maternal band is tillered.Production of hybrid seeds old farmer, maternal row ratio are with 2: 12-14 is advisable, and two phase male parent duplicate rows are planted with period interval, distance between rows and hills 30cm * 15cm; Maternal distance between rows and hills 16.7cm * 13.3cm stops action row, participates basic seedling.
C) the seedling frame is put up in fertile water transfer control, coordinates colony.
Seed farm rich water is planned strategies for, and grasps the principle of " mend preceding heavy, middle control, back ", and base manure is wanted foot, and tillering fertilizer is wanted early, promotes this early growth and quick tiller of father and mother, balanced growth.In time put the field behind enough seedlings, the control ineffective tillering; The late growth stage alternation of wetting and drying is irrigated, and supports Gen Baoye, promotes that grouting is solid.
D) spray " 920 " in right amount, improve outcrossing seed-setting rate.
It rich A fringe type is big, bag neck degree is light, seed farm " 920 " consumption is too much unsuitable, about general mu consumption 15 grams, divide three uses, for the first time mu consumption 4-5 gram, see that at the seed farm female parent fringe 5% begins to cut leaf and used the same day, for the second time, a mu consumption is respectively 6-8 gram and 3-4 gram for the third time, " 920 " for the first time with after sprayed in second day and the 4th day, can solve male sterile line bag neck problem preferably, promote that the fringe layer is neat, improve outcrossing seed-setting rate.
E) grasp the key link period, carry out the anti-assorted pure work of protecting conscientiously.
Under the prerequisite of strict time and distance isolation, florescence impurity elimination work is extremely important, is the anti-assorted most important thing of protecting pure work.Seed farm from see fringe to cut behind the leaf " 920 " use tell on before, approximately 6-7 days time was the material time of florescence impurity elimination work, at the sturdy impurity elimination 3-4 of this material time time, can play a multiplier effect to improving seed production purity.Impurity-removing method should be taked professional contingent's way, cut apart leaf before, heading flowering period, ripe preceding 3 stages, catch types such as precocity, maintenance line, half sterile strain, slow ripe strain, concentrate impurity elimination, help improving the impurity elimination effect.In addition, during the ripe and harvested, need guarantee that male parent and maternal list are received, list shines, the single storage, this also is that anti-mixing protected one of pure work.
F) note diseases and pests controlling, improve the seed commodity.
During the paddy growth, note the control of main diseases insect pests such as rice thrips, aphid, banded sclerotial blight, snout moth's larva, rice fulgorid and banded sclerotial blight, adhere to relying mainly on prevention that integrated control is grown to guarantee seed farm rice seedling normal growth.In production of hybrid seeds different growing, use the anti-microbial type agricultural chemicals simultaneously, to the control disease, improve the paddy look, improving the seed commodity has remarkable result.Major measure has three, and one is to use jinggangmeisu, uses twice booting stage, takes place suppressing banded sclerotial blight, and the strong stalk of healthy tree has obvious effect; Two are to use bactericide such as " going out black No. 1 ", use at twice after female parent cuts leaf, both can prevent and treat grain smut, can improve the paddy look again; The 3rd, in good time harvesting is accomplished " ninety percent ripe hundred per cent receive " and is in time dried, and helps improving the commodity of germination rate and seed.
4, day rich A propagation technique main points:
The propagation method of the rich A in male sterile line sky (Yancheng, Jiangsu) is: maternal (day rich A) sowing in the first tenday period of a month in late April to May, male parent (day rich B) divide the sowing of two phases, the more maternal late sowing of I phase male parent 3 days, the more maternal late sowing of II phase male parent 7 days, father and mother's one's own profession was than 2: 9, maternal seeding row spacing 13cm * 16.5cm, I, alternate the planting of II phase male parent, father and mother originally are individual plant transplanting.The strict isolation, note anti-assorted impurity elimination; Take ancillary method, improve outcrossing seed-setting rate.
Claims (3)
1, a kind of breeding method of high-grain weight excellent-quality ternary hybrid rice variety may further comprise the steps:
A) being that town extensive 084 makes male parent to recover, is that extensive 129 works in town are maternal to recover, and hybridizes to obtain F
0Seed;
B) in 6 generations of selfing then,, selfing limit, limit is selected, and selects anti--middle bacterial blight-resisting, sick level 0-3 level, the short length of very promptly falling 1,2,3 leaves of blade is 40-45cm, the plant type compactness, thousand kernel weight 30-31 gram, the individual plant of the white rate of chalk≤30%, chalkiness degree≤5%, transparency 1-2 level;
From selfing 3 generation F
3Beginning, take the capable 33cm+16.5cm of width, spacing in the rows 16.5cm, high fertile mu to execute the planting type that pure N17 kilogram, thin planting mu are planted 1.5 ten thousand caves, carry out bacterial leaf-blight inoculation resistance by generation and identify and carry out thousand kernel weight 30-31 gram and the white rate of exterior quality chalk≤30%, chalkiness degree≤5%, transparency 1-2 level are screened; From selfing 3 generation F
3Beginning and three is that hybrid combination is joined in male sterile line II-32A survey, measures restoring degree, and promptly the ripening rate of institute preparing hybrid rice is more than 85%;
From selfing 5 generation F
5Beginning and three is that hybrid combination is joined in the rich A survey in male sterile line sky, measures its restoring degree, collects the paddy of surveying extensive evaluation sub-district simultaneously and carries out the mensuration and the screening of exterior quality, selfing 6 generation F
6It is extensive 1126 to cultivate superior restorer line salt, and this kind plant height 110-115cm, blade are very short, promptly fall 1,2, the length of 3 leaves is 40-45cm, and the leaf look moderate, and blade is straight and upright, stem total leaf number 17-18 opens, 5 elongation internodes, and sowing is to earing 105-108 days, the 138-140 days time of infertility, spike length 25-27 centimetre, every total grain panicle 160-165 grain, the real grain of every fringe 145-150 grain, ripening rate is more than 90%, thousand kernel weight 30-31 gram, no awns, the white rate 30% of chalk, chalkiness degree 5%, transparency 1-2 level, column cap is colourless, the restoring degree height, promptly the ripening rate of institute preparing hybrid rice resists-middle bacterial blight-resisting more than 85%, sick level 0-3 level, it is smooth to open grain husk.
2, according to the breeding method of the described a kind of high-grain weight excellent-quality ternary hybrid rice variety of claim 1, it is characterized in that:
With three is that rich A in male sterile line sky and the described recovery of claim 1 are that salt extensive 1126 carries out the production of hybrid seeds, obtains triple crossing long-grained nonglutinous rice new varieties sky Feng You 1126, and a day Feng You 1126 makes rice culture in the wheat stubble in Yancheng, Jiangsu, in the 139-140 days time of infertility, ripe three-line indica hybrid rice type in the genus is about plant height 115-120cm, stem leafing in all one's life 17-18 opens, 5 elongation internodes, and cane is sturdy, the plump stem degree of embracing of leaf sheath is good, does not reveal joint, and three functional leafs in top are straight and upright, lift the blue or green seed Huang of bar, the percentage of earbearing tiller 70% when ripe on the sword-like leave, effective fringe 16-17 ten thousand/mu, spike length 25-28cm, every total grain panicle 170-175 grain, the real grain of every fringe 150-155 grain, ripening rate is more than 88%, and thousand kernel weight 29-30 restrains, and seed holding is medium, it is yellow that grain is, brown rice rate 75.0%, polished rice rate 63.7%, head rice rate 52.0%, grain length 7.2mm, aspect ratio 3.1, the white rate 28% of chalk, chalkiness degree 4.7%, 3 grades of transparencies, disappear 5 grades of values of alkali, glue denseness 70mm, amylose content 21.2%; The every index of rice quality all reaches three grades of superior rice standards of GB.
3, according to the breeding method of the described a kind of high-grain weight excellent-quality ternary hybrid rice variety of claim 2, it is characterized in that, the producing method for seed of it Feng You 1126 is extensive 1126 minutes two phases of male parent salt sowing, and I phase male parent is sowed by the end of April, and II phase male parent was than I phase male parent late sowing 10 days, maternal early June sowing, broadcast 32 days poor time differences with I phase male parent, leaf difference 6.5-7.0 leaf, seed farm father and mother one's own profession ratio is 2: 12, I, single this alternate the planting of II phase male parent, maternal seeding row spacing 13cm * 16.5cm.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104585025A (en) * | 2015-02-03 | 2015-05-06 | 盐城明天种业科技有限公司 | Method for breeding broad-spectrum rice restorer line hybrid rice combination |
| CN106035054A (en) * | 2016-04-06 | 2016-10-26 | 浙江省农业科学院 | Breeding method capable of improving transparency of rice of big-kernel paddy rice variety |
| CN107251834A (en) * | 2017-06-30 | 2017-10-17 | 江苏沿海地区农业科学研究所 | A kind of selection of precocious intermediate keng rice kind |
| CN108476969A (en) * | 2018-02-12 | 2018-09-04 | 贵州省农作物品种资源研究所 | Rice homogeneity oozes the selection of round-grained rice restorer |
| CN115968774A (en) * | 2023-03-01 | 2023-04-18 | 江苏丘陵地区镇江农业科学研究所 | Breeding method of japonica rice variety with high polished rice rate |
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2009
- 2009-06-23 CN CN200910033532A patent/CN101663992A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104585025A (en) * | 2015-02-03 | 2015-05-06 | 盐城明天种业科技有限公司 | Method for breeding broad-spectrum rice restorer line hybrid rice combination |
| CN104585025B (en) * | 2015-02-03 | 2017-04-19 | 盐城明天种业科技有限公司 | Method for breeding broad-spectrum rice restorer line hybrid rice combination |
| CN106035054A (en) * | 2016-04-06 | 2016-10-26 | 浙江省农业科学院 | Breeding method capable of improving transparency of rice of big-kernel paddy rice variety |
| CN106035054B (en) * | 2016-04-06 | 2018-03-02 | 浙江省农业科学院 | A kind of breeding method for improving rice big grain kind rice transparency |
| CN107251834A (en) * | 2017-06-30 | 2017-10-17 | 江苏沿海地区农业科学研究所 | A kind of selection of precocious intermediate keng rice kind |
| CN108476969A (en) * | 2018-02-12 | 2018-09-04 | 贵州省农作物品种资源研究所 | Rice homogeneity oozes the selection of round-grained rice restorer |
| CN115968774A (en) * | 2023-03-01 | 2023-04-18 | 江苏丘陵地区镇江农业科学研究所 | Breeding method of japonica rice variety with high polished rice rate |
| CN115968774B (en) * | 2023-03-01 | 2023-11-14 | 江苏丘陵地区镇江农业科学研究所 | Breeding method of polished round-grained nonglutinous rice variety with high whole polished rice rate |
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