CN1198883A - Chenghui-210 as high photosynthetic efficienct restoring line rice and breeding technology of superhybrid rice - Google Patents
Chenghui-210 as high photosynthetic efficienct restoring line rice and breeding technology of superhybrid rice Download PDFInfo
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- CN1198883A CN1198883A CN 98101981 CN98101981A CN1198883A CN 1198883 A CN1198883 A CN 1198883A CN 98101981 CN98101981 CN 98101981 CN 98101981 A CN98101981 A CN 98101981A CN 1198883 A CN1198883 A CN 1198883A
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Abstract
A method for selectively cultivating high-photosynthetic efficiency recovery line and hybridized variety of rice includes cultivating Chenghui 210 by hybridization between Zhongxian recovery line 871028 as femal parent and Lemont as male parent, and cultivating Yayou 210, Fuyou 210, or Jiuyou 210 by cross breeding between sterile line Gang 46A, Fuyi A, or Jiu 118 A as femal parent and Chenghui 210 as male parent. Said Chenghui 210 features good plant type and high photosynthetic efficiency. Said Yayou 210 and others feature high photosynthetic efficiency and high yield increased by 13.6%.
Description
The invention belongs to the rice heterosis utilization field, be specifically related to a kind of seed selection of paddy rice new restorer line and the seeding technique of hybrid rice High yield combination.
Over nearly 10 years, domestic and international many breeding research mechanism all attaches great importance to the exploration that indica-japonica heterosis utilizes.On the whole, obtained interim progress, as the inter-subspecies hybrid rice Xieyou 413 that China Paddy Rice Inst breeds, done the plantation of single cropping late rice in Zhejiang Province than Shanyou 63 volume increase 11.2%, the 600-650 kilogram is produced in the yielding Demonstration field.But rice culture in Sichuan is done, per unit area yield amplification is less.Shanyou 63 is in Sichuan Province's regional test, and per unit area yield is about 540 kilograms, and excellent 22, the II excellent 838 in combination ridge is than Shanyou 63 volume increase 5% between the kind that " eight or five " end is bred.The average per unit area yield of paddy rice regional test is crossed 600 kilograms, and small size was demonstrated 650 kilograms, is the yield index of medium rice district super hybridization rice kind.
With regard to utility rate of luminous energy, biological yield and economic flow rate, promote mainly the level that excellent 22 grades in kind ridge do not break through Shanyou 63 now.Therefore, from breeding strategy, at first should discover and use high light efficiency germplasm, improve the availability of paddy rice luminous energy; Create good plant type, make up rational colony; Increase the grain number, enlarge storage capacity; Improve the running rate of photosynthetic product.On breeding technique, adopt traditional breeding way and modern biotechnology to combine, set up breeding technique system efficiently, realize the important breakthrough of output breeding.
Purpose of the present invention is intended to solve the problem in the aforementioned breeding technique, the high light efficiency super hybridized rice and the supporting high-yield seeds production technique of a kind of high light efficiency new restorer line and preparation are provided, produce the hybrid rice seed of amount foot of fine quality, can China southern one season the medium rice district, one evening in season the long-grained nonglutinous rice district and the demonstration of the part double rice cropping system in south China with apply.
The selection of a kind of high light efficiency rice restorer and high light efficiency crossbreed, this selection is realized by following steps:
1, with in Xian to recover be 871028 for maternal, Lemont is a paternal hybrid, seed selection becomes extensive 210;
2, be maternal with male sterile line Gang No.46A, Fuyi No.A or Jiu No.118A,, prepare Yayou No.210, Fuyou No.210 or Jiuyou No.210 crossbreed with becoming extensive 210 to be male parent.
Concrete seed selection and seeding technique are as follows:
(1), with in Xian to recover be 871028 to do maternally, with the high light efficiency naked body rice varieties Lemont hybridization of the original U.S., seed selection has the high light efficiency new restorer line of indica of naked body rice heredity blood relationship, the hybrid combination of preparation breaks through the yield level of existing hybrid rice.It is choosing that F2 generation begins, and F3-F5 generation is carried out photosynthetic efficiency, restoring force and combining ability test, and blast resisting is identified.F6 carries out the strong advantage combined sorting of high light efficiency subsequently for carrying out anther culture.Adopt these comprehensive breeding technology, breed photosynthetic efficiency height, output coordinate force height, the good paddy rice new restorer line of plant and leaf shape and become extensive 210.
(2), with becoming extensive 210 to make male parent, be mixed with the slow ripe combination Yayou No.210 of Xian in the high light efficiency super high-yielding with the male sterile line Gang No.46A of large tracts of land production usefulness.
(3), be male parent to become extensive 210, also with other male sterile line, go out the slow ripe hybrid rice of super high-yielding as combos such as Fuyi No.A, Jiu No.118As.
Concrete seed selection process sees Table 2:
Advantage of the present invention and good effect are as follows:
1, new restorer line becomes that extensive 210 plant types are good, photosynthetic efficiency is high.Become that extensive 210 leaf looks dark green, blade is thicker, stand upright to go up and lift, be subjected to light situation good.The unit are photosynthetic efficiency is bright extensive 63 high by 37% than common recovery.This recovery system has specific combining ability with Gang No.46A, and hybrid vigour is strong.
2, Yayou No.210 (Gang No.46A/one-tenth extensive 210) shows high light efficiency, super high-yielding.The photosynthetic efficiency of this combination shows significant heterobeltiosis.The leaf photosynthesis efficient at Yayou No.210 heading stage becomes extensive 210 high 1 times than big value parent.Ear the bigger competitive advantage (table 1) of leaf photosynthesis intensity performance back 10 days: no matter be sword-like leave, still fall two leaves, fall three leaves photosynthetic intensity all doubly than the high 2-3 of Shanyou 63, demonstrate this combination and have higher photosynthetic production capacity.This is the physiological foundation that super hybridization rice output makes a breakthrough.
3, Yayou No.210 presents the good plant type of change.Seedling growth is in great numbers, and tillering ability is strong, can expand leaf area rapidly, occupies bigger growing space, makes full use of luminous energy.After the jointing, upper blade is stood upright, and is subjected to light good.The Yayou No.210 big panicle many grains per panicle, fecundity is good, full seed, comprehensive proterties excellence.The number of grain per ear of this combination is than the Shanyou 63 30-40 of manying grain, and ripening rate is more than 85%, and thousand kernel weight 28 restrains.About 600 kilograms of general per unit area yields.0.4316 mu of Yayou No.210 is planted experimentally in the Tan Xiu honor of Buddha mausoleum, town, Taihe county, Shehong County, Sichuan in 1997 village 6 societies, checks and accepts through on-the-spot expert group, and 726.9 kilograms of folding per mu yields are than the Shanyou 63 volume increase 13.6% with the field plantation.Table 1: ear the leaf photosynthesis intensity of back 10 days Yayou No.210s and the comparison of Shanyou 63
| Photosynthetic intensity | Yayou No.210 | Shanyou 63 |
| Sword-like leave falls two leaves and falls three leaves | Sword-like leave falls two leaves and falls three leaves | |
| CO 2Mg/ strain .hr CO 2mg/dm 2.hr CO 2mg/g.hr | 9.02???10.61???11.56 18.86??16.21???17.81 3.98???3.59????3.74 | ??3.82????3.80????4.15 ??7.43????6.67????6.27 ??1.51????1.35????1.23 |
Be described in detail specific implementation method of the present invention below
One, parental source, combo and feature thereof
1, apolegamy combination: the breeding technique of high light efficiency rice restorer of the present invention and high light efficiency crossbreed is: with in Xian to recover be 871028 to be female parent, Lemont is a paternal hybrid, seed selection becomes extensive 210; With male sterile line Gang No.46A, Fuyi No.A or Jiu No.118A is maternal, with becoming extensive 210 to be male parent, prepares Yayou No.210, Fuyou No.210 or Jiuyou No.210 crossbreed.
2, parental source: 1989, the present patent application human indica restorer line 871028 and U.S. naked body rice Lemont hybridization adopted pedigree method, the continuous multi-generation test cross, and use high light efficiency process for screening and identifying and cultivate successfully high light efficiency new restorer line and become extensive 210.871028 polymerizations common wild-rice, IR24, many anti-, high-qualitys such as bright extensive 63, high-combining ability and wide adaptability relationship.Lemont is the famous kind in U.S. paddy rice producing region, is one of famous in the world high light efficiency germplasm.So the new restorer line of breeding had both had the high light efficiency characteristics of Lemont, and was far away with the hereditary blood relationship of long-grained nonglutinous rice, kept IR24, bright extensive 63 restoring force again and, improved output coordinate force the annidation in subtropics long-grained nonglutinous rice district.
3, become extensive 210 features: tillering ability is strong, the plant type compactness, and the leaf look dark green, and leaf inward-curl is thick and straight and upright, fertilizer resistance anti-lodging.The fringe neck is shorter, and the fringe type is grown up.Many weights of grain, the grain husk point is colourless.98 centimetres of plant heights, every fringe 147 of grains, ripening rate 90%, and thousand kernel weight 29 grams, the outward appearance of rice, processing and food flavor quality are all more excellent.
Become extensive 210 photosynthetic efficiency height, the common recovery of leaf photosynthesis strength ratio long-grained nonglutinous rice is bright extensive 63 high by 37%.Leaf area is bigger, and the individual plant Photosynthetic Productivity is higher more than 40% than bright extensive 63.
Sow in spring in the area, Chengdu, sowing is 105 days to the phase of going through of the fringe that begins, the average number of blade 16.0 of stem.Flower pesticide is bigger, and pollen amount is many, and vigor is stronger, and florescence 12-15 days is when containing flower about fine at 12 o'clock at noon.
Two, become extensive 210 preparing hybrid rice newly to make up the crucial seeding technique of Yayou No.210
High light efficiency new restorer line become extensive 210 and the seeding technique of crossbreed be characterised in that:
With the U.S. high light efficiency naked body rice is basic germplasm, take conventional breeding method and modern biotechnology, the good plant type of naked body rice Lemont, high light efficiency gene and other beneficial gene are fused to long-grained nonglutinous rice and recover in the system, and the new restoring of cultivating into high light efficiency is tied to form extensive 210.When the production of hybrid seeds, because of the florescence comparatively concentrated, generally speaking, adopt the male parent production of hybrid seeds of two phases to be advisable.
Become extensive 210 broadcast and take out 105 days phases of going through, than bright extensive 63 short about 4 days.The average number of blade 16 leaves of stem lack the 0.5-1.0 leaf than bright extensive 63.This recovery system with the concrete accent difference of the Gang No.46A production of hybrid seeds is: about 47 days, the leaf age difference is about 9.0 leaves.Table 2: the high light efficiency new restorer line of paddy rice becomes extensive 210 the mixed 1990 summer Chengdu F2 of receipts of seed selection process place generation in season in time 1989 summer of technical measures Chengdu 871028/Lemont preparation combination 1989 winter Hainan F1 to choose of short stem, plant and leaf shape
Good osculant individual plant.1990 winter Hainan F3 select the good excellent strain of fecundity.1991 summer Chengdu F4 choose individual plant of short stem.1992 summer Chengdu F5 choose of short stem solid good
Excellent strain and Gang No.46A test cross.1993 summer Chengdu F6 select the elite plant strain anther culture.1993 winter Hainan H1 select slow ripe fine individual plant and ridge
The 46A test cross.1994 summer Chengdu H2 combination advantages are observed.20012
Output coordinate force height, photosynthetic
The efficient height, economical character is neat
Unanimity is named to becoming extensive 210.The 1994 winter Hainan H3 and the Gang No.46A production of hybrid seeds.Production ratio is made up in 1995-1996 Chengdu, and the parent is numerous
Grow combined copy.Multiple spot test and high yield are participated in 1997 Sichuan
Demonstration.
Claims (1)
1, the selection of a kind of high light efficiency rice restorer and high light efficiency crossbreed, it is characterized in that: this selection is realized by following steps:
(1), with in Xian to recover be 871028 for maternal, Lemont is a paternal hybrid, seed selection becomes extensive 210;
(2), be maternal with male sterile line Gang No.46A, Fuyi No.A or Jiu No.118A, with becoming extensive 210 to be male parent, prepare Yayou No.210, Fuyou No.210 or Jiuyou No.210 crossbreed.
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| CN 98101981 CN1198883A (en) | 1998-05-26 | 1998-05-26 | Chenghui-210 as high photosynthetic efficienct restoring line rice and breeding technology of superhybrid rice |
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| CN 98101981 CN1198883A (en) | 1998-05-26 | 1998-05-26 | Chenghui-210 as high photosynthetic efficienct restoring line rice and breeding technology of superhybrid rice |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6521045B1 (en) | 1995-10-06 | 2003-02-18 | Seed Rubber Company Limited | Clutch mechanism of coat film transfer tool and coat film transfer tool |
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1998
- 1998-05-26 CN CN 98101981 patent/CN1198883A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6521045B1 (en) | 1995-10-06 | 2003-02-18 | Seed Rubber Company Limited | Clutch mechanism of coat film transfer tool and coat film transfer tool |
| US6808565B1 (en) | 1995-10-06 | 2004-10-26 | Seed Rubber Co., Ltd. | Clutch mechanism of coat film transfer tool and coat film transfer tool |
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