CN101946691A - Hybrid rice breeding method for lowering seed production cost - Google Patents

Hybrid rice breeding method for lowering seed production cost Download PDF

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Publication number
CN101946691A
CN101946691A CN 201010249397 CN201010249397A CN101946691A CN 101946691 A CN101946691 A CN 101946691A CN 201010249397 CN201010249397 CN 201010249397 CN 201010249397 A CN201010249397 A CN 201010249397A CN 101946691 A CN101946691 A CN 101946691A
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strain
extensive
survey
plant
generation
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CN 201010249397
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王守海
杜士云
吴爽
王德正
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Rice Research Institute of Anhui Academy of Agricultural Sciences
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Rice Research Institute of Anhui Academy of Agricultural Sciences
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Abstract

The invention discloses a hybrid rice breeding method for lowering seed production cost. A target restorer line with drooping leaf character is bred, test cross is carried out on the target restorer line with drooping leaf character and a sterile line, the lamina of the restorer line does not form hinder when the pollen of the restorer line spreads to the sterile line, and thus the lamina of the restorer line can be free from being cut off manually. The invention saves manpower and has good pollen spreading effect.

Description

A kind of hybrid rice selection that reduces breeding cost
Technical field
The present invention relates to the paddy rice field of planting, specifically is a kind of hybrid rice selection that reduces breeding cost.
Background technology
In the breeding of hybrid rice of routine, for reducing recovery is the blade obstacle that pollen runs into to the male sterile line communication process, the upper strata blade that need will recover system and male sterile line before pollination suitably cuts off, so not only increase the labor service expenditure of manually cutting leaf, and reduced the effect of recovering the blade obstacle that to be pollen run into to the male sterile line communication process and bad.
Summary of the invention
The invention provides a kind of hybrid rice selection that reduces breeding cost, the target recovery system that will have the drooping leaves proterties carries out test cross with male sterile line, making recovery is that the blade that pollen recovers to be when male sterile line is propagated does not constitute obstruction, thereby the blade that recovers to be can be in order to avoid manually cut off.
Technical scheme of the present invention is:
A kind of hybrid rice selection that reduces breeding cost is characterized in that: may further comprise the steps:
(1), the recovery system selecting to meet the breeding objective requirement is as female parent, paddy rice resource material or incross with having recessive drooping leaves proterties obtain F 1Hybridize generation; Plantation F 1Plant 10-20 strain, adjacent plantation F simultaneously 1Female parent and each 10 strain of male parent of hybridizing generation, true and false F 1Plant is gathered in the crops ripe F 1For seed 5-10 strain;
(2), will obtain F 1Plant for seed, select to have recessive drooping leaves proterties and meet the some strain F of elite seedling that breeding objective requires 2Generation, plantation F 2For seed, select to have recessive drooping leaves proterties and meet the some strain F of elite seedling that breeding objective requires 3Generation; F 2Generation, F 3Do not have master pulse for drooping leaves, blade is sagging; Normal leaf has master pulse, blade straight elevator or upright, and blade is subjected to illumination stance gesture good;
(3), plantation F 3For seed, when selecting elite seedling, do maternal hybridization with it and survey extensive and choosing has the individual plant F that recovers gene with cytoplasmic male sterile line 4Generation; Plant F simultaneously 5Strain system and the extensive material of paired survey are according to the extensive F of survey that makes hybridization of female parent with cytoplasmic male sterile line 1The height of ripening rate selects to survey extensive F 1Solid high corresponding male parent strain is to eliminate those and survey extensive F 1Solid low or lower corresponding male parent strain system, the excellent strain of selecting in the test cross once more simultaneously; Plant F simultaneously 6Strain is and repeats to survey extensive strain in pairs, according to repeating to survey extensive F 1The height of ripening rate selects to repeat to survey extensive F 1Solid high corresponding male parent line, selected male parent line are target and recover system;
(4), select narrow, upright, the clean and jerk of upper strata blade, the short male sterile line of sword-like leave recovers system with target and carries out test cross, strain enters land for growing field crops production behind the test cross behind comparative test, regional test, production test and variety certification.
The hybrid rice selection of described reduction breeding cost is characterized in that: the plantation row of the described recovery system that meets the breeding objective requirement and cytoplasmic male sterile line is than being 1-2: 12-14.
The hybrid rice selection of described reduction breeding cost is characterized in that: described recovery system as the finger that meets the breeding objective requirement has high yield, recovery resistant to lodging, heat-resisting or cold-resistant proterties is.
The paddy rice resource material or the strain that have recessive drooping leaves proterties can be sought from the variety resources of rice material, and perhaps the existing rice varieties of mutagenesis obtains.Hang down temperature sensitive caryon sterile line 399S such as long-grained nonglutinous rice in the prior art.
General is high generation to stablize strain as surveying extensive male sterile line, the economical character stable and consistent, and the system of the recovery in the seed selection is low for strain, still be in the proterties separation,, selected recovery system numbered one by one in order to investigate conveniently, as R1, R2, R3 ... Deng, the male sterile line numbering is made as A, and A * R1 is then arranged, A * R2, A * R3 test cross kind, the adjacent plantation with R1 of A * R1 crossbreed is just formed 1 pair and is surveyed extensive material, if A * R1 crossbreed is solid good, then R1 just contains the recovery gene, otherwise R1 recovers system; Because R1 is stable, need in the colony of plantation R1, continue to select elite seedling and male sterile line hybridization, in breeding, be called repetition measurement or repeat to survey extensive, form next round repetition measurement material, till the R1 offspring stablizes.
The present invention has the rice strain of drooping leaves proterties by seed selection, carries out test cross with male sterile line then.It is the assembly combination production of hybrid seeds that the present invention recovers with this drooping leaves, because recovering is that blade is sagging, the spike of rice that recovers system is on canopy top, its pollen recovers system when male sterile line is propagated blade does not constitute obstruction, thereby the blade that recovers system can have been saved manpower and make pollen transmission effective in order to avoid manually cut off.
Embodiment
Reduce the hybrid rice selection of breeding cost:
1, target is recovered the seed selection of system
(1), the recovery system selecting to meet the SOYBEAN IN HIGH-YIELD BREEDING target call is as female parent, with paddy rice resource material that has the drooping leaves proterties or the low temperature sensitive caryon sterile line 399S hybridization of strain long-grained nonglutinous rice, obtains about 50 of crossbreed.
(2), plantation F 1Plant 10 to 20 strains, the female parent of simultaneously adjacent plantation hybridization and each 10 strain of male parent are with true and false F 1Plant is gathered in the crops ripe F 1Seed 5 to 10 strains.
(3), plantation segregative generation F 21000 to 2000 strains, select to have recessive drooping leaves proterties and meet the some strains of elite seedling that breeding objective requires.
(4), with selected F 2The elite seedling kind becomes several F 3Elite seedling is selected by strain system in excellent strain is.
(5), plantation F 4Strain system surveys extensive and the menu strain when selecting excellent strain to be.
(6), plantation F 5Strain system and the extensive material of paired survey are according to surveying extensive F 1The height of ripening rate is selected F 1Solid high corresponding male parent strain is to eliminate those and survey extensive F 1Solid low or lower corresponding male parent strain is; The excellent strain of selecting in the test cross once more simultaneously.
(7), plantation F 6Strain is and repeats to survey extensive strain in pairs, according to repetition measurement F 1The height of ripening rate is selected F 1Solid high corresponding male parent line, selected male parent line are target and recover system.
2, male sterile line selects for use
Owing to recover frenulum recessive drooping leaves proterties is arranged, make hybrid combination F 1Upright blade clean and jerk, male sterile line need be selected narrow, upright, the clean and jerk of upper strata blade, the type of sword-like leave short (less than 25cm) for use.
3, combination seed selection
, clean and jerk narrow, upright with the upper strata blade, the male sterile line of sword-like leave short (less than 25cm) is a test cross as maternal the recovery with the target that has recessive drooping leaves, and middle choosing combination enters the land for growing field crops by variety test of lines, regional test, production test and variety certification supervisor and produces.
4, seed production
(1), sowing and seedling
According to male sterile line and recover system breeding time length with leaf age is poor, the composite factors such as weather of grown place are determined male sterile line and sowing time of recovering system and poor phase of sowing.
Composite factors such as planting habit according to weather, crops for rotation, kind breeding time and the peasant of grown place are determined seedling raising method, as kind long need breeding time in the lower sowing in season of temperature in early spring, can take plastic film insulation to educate little seedling, after planting post two sections method of raising seedling of seedling about 15 days more then; The male sterile line short as breeding time need can adopt moistening or non-irrigated seedling raising method in summer high temperature sowing in season.
(2), transplant
Recovery system goes than adopting 2 with male sterile line: 12-14 or 1: 12-14, general long recovery system or the male sterile line of breeding time of planting earlier, after plant short parent breeding time (male sterile line or recover system), breeding time, long, the strong parent of tillering can plant 1-2 grain seed seedling, and breeding time, short, the weak parent of tillering can plant many seed seedlings.
(3), land for growing field crops field management
Similar to general cross rice production of hybrid seeds field management, only be under the normal situation of flower synchronization, be to exempt when seeing fringe cutting leaf recovering, thereby economized the labor service expenditure of cutting leaf, saved production cost.
It is the seed selection process that drooping leaves recovers
Figure BSA00000223360000041

Claims (3)

1. hybrid rice selection that reduces breeding cost is characterized in that: may further comprise the steps:
(1), the recovery system selecting to meet the breeding objective requirement is as female parent, paddy rice resource material or incross with having recessive drooping leaves proterties obtain F 1Hybridize generation; Plantation F 1Plant 10-20 strain, adjacent plantation F simultaneously 1Female parent and each 10 strain of male parent of hybridizing generation, true and false F 1Plant is gathered in the crops ripe F 1For seed 5-10 strain;
(2), will obtain F 1Plant for seed, select to have recessive drooping leaves proterties and meet the some strain F of elite seedling that breeding objective requires 2Generation, plantation F 2For seed, select to have recessive drooping leaves proterties and meet the some strain F of elite seedling that breeding objective requires 3Generation; F 2Generation, F 3Do not have master pulse for drooping leaves, blade is sagging; Normal leaf has master pulse, blade straight elevator or upright, and blade is subjected to illumination stance gesture good;
(3), plantation F 3For seed, when selecting elite seedling, do maternal hybridization with it and survey extensive and choosing has the individual plant F that recovers gene with cytoplasmic male sterile line 4Generation; Plant F simultaneously 5Strain system and the extensive material of paired survey are according to the extensive F of survey that makes hybridization of female parent with cytoplasmic male sterile line 1The height of ripening rate selects to survey extensive F 1Solid high corresponding male parent strain is to eliminate those and survey extensive F 1Solid low or lower corresponding male parent strain system, the excellent strain of selecting in the test cross once more simultaneously; Plant F simultaneously 6Strain is and repeats to survey extensive strain in pairs, according to repeating to survey extensive F 1The height of ripening rate selects to repeat to survey extensive F 1Solid high corresponding male parent line, selected male parent line are target and recover system;
(4), select narrow, upright, the clean and jerk of upper strata blade, the short male sterile line of sword-like leave recovers system with target and carries out test cross, strain enters land for growing field crops production behind the test cross behind comparative test, regional test, production test and variety certification.
2. the hybrid rice selection of reduction breeding cost according to claim 1 is characterized in that: the plantation row of the described recovery system that meets the breeding objective requirement and cytoplasmic male sterile line is than being 1-2: 12-14.
3. the hybrid rice selection of reduction breeding cost according to claim 1 is characterized in that: described recovery system as the finger that meets the breeding objective requirement has high yield, recovery resistant to lodging, heat-resisting or cold-resistant proterties is.
CN 201010249397 2010-08-03 2010-08-03 Hybrid rice breeding method for lowering seed production cost Pending CN101946691A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102273401A (en) * 2011-06-27 2011-12-14 江苏沿海地区农业科学研究所 Safe and efficient hybrid rice seed production method
CN105075848A (en) * 2015-08-07 2015-11-25 安徽省农业科学院水稻研究所 Hybrid rice breeding method
CN105265261A (en) * 2015-10-16 2016-01-27 苏州市农业科学院 Test cross parent field arranging and transplanting method
CN110050654A (en) * 2019-06-12 2019-07-26 武汉庆发禾盛农业发展有限公司 It is a kind of with the breeding method resistant to lodging for resisting anti-rust japonica rice

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1057941A (en) * 1990-07-11 1992-01-22 围环物产公司 Utilize male sterile rice plants to produce hybrid rice

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1057941A (en) * 1990-07-11 1992-01-22 围环物产公司 Utilize male sterile rice plants to produce hybrid rice

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
《中国水稻科学》 19991231 任光俊等 水稻新广亲和恢复系成恢448 的选育及利用 第120-122页 1-3 第13卷, 第2期 2 *
《浙江农业学报》 19931231 王建军等 水稻广亲和恢复系选育技术的研究 第138-142页 1-3 第5卷, 第3期 2 *
《现代农业科技》 20100430 范兵等 杂交水稻恢复系测交方法 第106页 1-3 , 第7期 2 *
《西南农业学报》 19981231 陆贤军等 籼型杂交水稻恢复系选育研究进展 第58-63页 1-3 第11卷, 2 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102273401A (en) * 2011-06-27 2011-12-14 江苏沿海地区农业科学研究所 Safe and efficient hybrid rice seed production method
CN105075848A (en) * 2015-08-07 2015-11-25 安徽省农业科学院水稻研究所 Hybrid rice breeding method
CN105265261A (en) * 2015-10-16 2016-01-27 苏州市农业科学院 Test cross parent field arranging and transplanting method
CN105265261B (en) * 2015-10-16 2018-01-12 苏州市农业科学院 The field arrangement of tester a kind of and method for transplanting
CN110050654A (en) * 2019-06-12 2019-07-26 武汉庆发禾盛农业发展有限公司 It is a kind of with the breeding method resistant to lodging for resisting anti-rust japonica rice

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Application publication date: 20110119