CN105684890A - Improved crop breeding individual plant selection method - Google Patents
Improved crop breeding individual plant selection method Download PDFInfo
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- CN105684890A CN105684890A CN201610104494.7A CN201610104494A CN105684890A CN 105684890 A CN105684890 A CN 105684890A CN 201610104494 A CN201610104494 A CN 201610104494A CN 105684890 A CN105684890 A CN 105684890A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
- A01H1/00—Processes for modifying genotypes ; Plants characterised by associated natural traits
- A01H1/04—Processes of selection involving genotypic or phenotypic markers; Methods of using phenotypic markers for selection
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- Life Sciences & Earth Sciences (AREA)
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- Developmental Biology & Embryology (AREA)
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- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
Abstract
The invention discloses an improved crop breeding individual plant selection method. The method comprises the steps that artificial hill-seeding is adopted by crop breeding generation materials, and when crops are ripe, individual plants are pulled out from a field according to marks; the harvested individual plants are brought back to a workshop for seed tests, the individual plants are separated, and the individual plants according with target characters are selected and left; individual head threshing is conducted on the separated individual plants, seed observation is conducted on an individual head of the same individual plant, and individual plant seeds which are full in seed are selected indoors to serve as sowing seeds F3 for next year; when sowing is conducted, the selected individual seeds are planted according to head rows, whether line spacing has differences or not during the growing period is observed, if agronomic characters of different lines have obvious differences, it is indicated that the individual plants selected in the previous season is mixed with other individual plants, and the individual plants are selected or discarded according to the target characters; if the agronomic characters of different lines are basically the same, it is indicated that the individual plants selected in the previous season are real and effective and can be used for being selected by progenies. By means of the improved crop breeding individual plant selection method, different individual plants can be effectively separated, the effectiveness of the selected individual plants can be identified, and the effectiveness of individual selection is improved.
Description
Technical field
The invention belongs to crop breeding field, particularly relate to a kind of Improvement type crop breeding Single-plant selection method。
Background technology
In crop conventional breeding is put into practice, Single-plant selection is conventional a kind of cultivating method of new species。Single plant method is that individual selection and offspring identify the selection method combined, it is from existing kind or breeding material separation progeny population, select some excellent or variation individual plants according to Breeding objective requirement, number, gather in the crops respectively and mix threshing respectively to preserve, these individual plants are planted into strain (OK) by the next generation respectively, performance according to each strain, identifies the selection method that each selected individual plant genotype is good and bad。It is generally divided into a single plant method and repeatedly single plant method。Elected plant can be carried out heritability quality qualification according to the performance of elected progeny of plants by this method, improves efficiency of selection。
The basic operation of Single-plant selection needs in field single-strain planting, individual plant results, individual plant species test。But owing to field crops stooling is strong in actual field operates, spacing distance is little and cause that adjacent individual plant intersects and be grown in together between individual plant, field individual plant of choosing distinguishes unclear often, often occurs between individual plant mixed in together。After the individual plant differentiated enters mixing threshing, Second Year was planted, if mixing other individual plants in individual plant, it is sometimes found that separation or variation just cannot confirm that whether the separation in offspring's strain is from making a variation or mixing at prior-generation between different individual plants in offspring's strain (OK)。Therefore, adopting a kind of Improvement type crop breeding Single-plant selection method is solve the effective ways of this problem。
Summary of the invention
It is an object of the invention to overcome field in prior art choose individual plant time often mix contiguous individual plant cause individual plant separate not thorough; it is likely to occur when follow-up individual plant threshing is reserved seed for planting and mixes the inefficient problem of the Single-plant selection caused; the present invention provides a kind of Improvement type crop breeding Single-plant selection method; the effectiveness of menu strain in can effectively separating different individual plant and differentiating; and the economical character of menu strain in effectively differentiating, improve the effectiveness of Single-plant selection。
To achieve these goals, the technological means that the present invention adopts is:
A kind of Improvement type crop breeding Single-plant selection method, comprises the following steps:
1. in crop breeding generation material F2 generation, adopts artificial dibbling, and program request spacing in the rows 5-8cm, line-spacing 25-30cm, every part of material broadcasts artificial dibbling no less than planting 2000 strains, the same Production of Large Fields of field management；
2. crop growth period field investigation, record each individual plant economical character, disease resistance and lodging resistance, time ripe, carry out labelling, choose individual plant according to labelling field；
3. the individual plant of results takes back workplace species test, carries out individual plant separation, selects and remain and meet the individual plant of objective trait。The single fringe of Single-plant selection 3-5 separately is carried out single fringe threshing, and the single further seed of fringe of 3-5 of same individual plant is observed, and 3-5 single fringe seed of indoor selection full seed sows (F3) as next year；
4. the single fringe seed of selected during sowing 3-5 plants 3-5 row according to head progeny row, it is easy to trophophase observation 3-5 whether variant in the ranks, if in the ranks there is notable difference in difference, show the individual plant selected by previous season mixes other individual plants, in conjunction with Agronomic characteristic, this plant is accepted or rejected according to Breeding objective；If 3 row are basically identical, it was shown that the individual plant selected by previous season is effective。
4. trophophase field investigation, record, select the plant mixing results meeting objective trait, for the selection of subsequent generation。Subsequent generation selects conventionally breeding method。
Beneficial effect:
Traditionally, in crop conventional breeding, Single-plant selection method is a kind of conventional progeny material system of selection, and choosing and be usually spaced apart by individual plant after individual plant in field, then mixes threshing。The invention provides a kind of Improvement type crop breeding Single-plant selection method, single fringe threshing after adopting field individual plant to choose, 3-5 list fringe of selecting and remain reserve seed for planting, it is to avoid mixes between different individual plants, is conducive to obtaining real individual plant progeny material。Crop breeding can be effectively improved Single-plant selection efficiency, crop breeding has certain using value。
Detailed description of the invention
A kind of Improvement type crop breeding Single-plant selection method, comprises the following steps:
1. selecting the spring of First Year the peaceful wheat of wheat breed No. 9 for female parent, selecting the good wheat breed Yangmai No.158 of comprehensive agronomy character is male parent, and preparing hybrid combines；Hybridization F0 is planted in autumn planting in the same year, and the Second Year summer harvest obtains hybridization F1。
2. the F1 gathered in the crops last year at Second Year carries out artificial dibbling 2000-2500 strain by spacing in the rows 5cm, line-spacing 26cm and is F2。To F2 for colony carry out Agronomic characteristic, disease resistance, the character such as resistant to lodging observation identify, the same Production of Large Fields of field management。
3. according to wheat growth stage field investigation, record, each individual plant economical character, disease resistance and lodging resistance in F2 are observed, time ripe, fine individual plant is carried out labelling, choose individual plant 50-100 strain according to being marked at field during results。
4. the fine individual plant of field results takes back workplace species test, carries out individual plant separation, selects and remain and meet the individual plant 20-30 strain of objective trait。Often selecting good strains in the field for seed and select 3 single fringes and carry out single fringe threshing, the single further seed of fringe of 3-5 of same individual plant is observed, and 3 single fringe seeds of indoor selection full seed are as next year sowing (F3)；
5. 3 single fringe seeds selected during sowing of future generation plant 3 row according to head progeny row, it is easy to trophophase observation 3 whether variant in the ranks, if in the ranks there is notable difference in difference, show the individual plant selected by previous season mixes other individual plants, if 3 row are basically identical, it was shown that the individual plant selected by previous season is effective。
6. trophophase field investigation, record, select strain (OK) the mixing results meeting objective trait, for the selection of subsequent generation。Subsequent generation selects conventionally breeding method。
Claims (6)
1. an Improvement type crop breeding Single-plant selection method, it is characterised in that comprise the following steps:
1) in crop breeding generation material F2 generation, adopts artificial dibbling, the same Production of Large Fields of field management；
2) crop growth period field investigation, record each individual plant economical character, disease resistance and lodging resistance, time ripe, carry out labelling, choose individual plant according to labelling field；
3) individual plant gathered in the crops takes back workplace species test, carries out individual plant separation, selects and remain and meets the individual plant of objective trait；Individual plant separately carries out single fringe threshing, and the further seed of single fringe of same individual plant is observed, and single fringe seed of indoor selection full seed sows F3 as next year；
4) single fringe seed selected during sowing is planted according to head progeny row, observes trophophase whether variant in the ranks, if notable difference in the ranks occurs in difference, it was shown that mix other individual plants in the individual plant selected by previous season, according to objective trait, such plant is accepted or rejected；If each row is basically identical, it was shown that the individual plant selected by previous season is authentic and valid, it is possible to continue to select for offspring。
2. a kind of Improvement type crop breeding Single-plant selection method according to claim 1, it is characterised in that the program request spacing in the rows 5-8cm of artificial dibbling described in step 1), line-spacing 25-30cm, F2 generations's work order grain program request is no less than 2000 strains。
3. a kind of Improvement type crop breeding Single-plant selection method according to claim 1, it is characterised in that in step 3), 3 ~ 5 single fringes of Single-plant selection separately are carried out single fringe threshing。
4. a kind of Improvement type crop breeding Single-plant selection method according to claim 1, it is characterised in that select 3 ~ 5 single fringe seeds to plant 3 ~ 5 row according to head progeny row in step 4) during sowing。
5. a kind of Improvement type crop breeding Single-plant selection method according to claim 2, it is characterised in that the program request spacing in the rows 5cm of artificial dibbling described in step 1), line-spacing 26cm。
6. a kind of Improvement type crop breeding Single-plant selection method according to claim 3, it is characterised in that in step 3), the single fringe of Single-plant selection 3-5 separately is carried out list fringe threshing。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610104494.7A CN105684890A (en) | 2016-02-26 | 2016-02-26 | Improved crop breeding individual plant selection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610104494.7A CN105684890A (en) | 2016-02-26 | 2016-02-26 | Improved crop breeding individual plant selection method |
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| CN105684890A true CN105684890A (en) | 2016-06-22 |
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| CN201610104494.7A Pending CN105684890A (en) | 2016-02-26 | 2016-02-26 | Improved crop breeding individual plant selection method |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103843658A (en) * | 2014-02-24 | 2014-06-11 | 中国农业科学院棉花研究所 | Wheat breeding improvement pedigree selection method |
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- 2016-02-26 CN CN201610104494.7A patent/CN105684890A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103843658A (en) * | 2014-02-24 | 2014-06-11 | 中国农业科学院棉花研究所 | Wheat breeding improvement pedigree selection method |
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Application publication date: 20160622 |