CN110169352A - Warm the selection of corn inbred line QB446 - Google Patents
Warm the selection of corn inbred line QB446 Download PDFInfo
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- CN110169352A CN110169352A CN201910037154.0A CN201910037154A CN110169352A CN 110169352 A CN110169352 A CN 110169352A CN 201910037154 A CN201910037154 A CN 201910037154A CN 110169352 A CN110169352 A CN 110169352A
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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
- A01H1/02—Methods or apparatus for hybridisation; Artificial pollination ; Fertility
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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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Abstract
The invention discloses a kind of selections for warming corn inbred line QB446.The selection of corn inbred line provided by the invention is: being basic material with the F1 generation that tropical Suwan1 (C11) population material hybridizes with temperate zone lancaster material representative system Mo17, by natural selection and Manual selection techniques, two class materials are mutually improved and selected.The present invention is exactly that the advantages of these two types of materials is aggregating by this method, and breeding better resistance, seed-producing rate are high, the good Elite inbred of quality.The relatively large group's selection of the procedure of breeding is simpler, easy to operate, and chance of success is larger, and the manpower and material resources of cost are less.The QB446 that selection provided by the invention selects has the characteristics that coordinate force height, moderate growth duration, seed-producing rate are high, quality is good, disease resistance is strong, dehydration is fast, tassel row number is more, fringe is thick, wide suitable.
Description
Technical field
The present invention relates to crop breeding technical field, specially a kind of breeding side for warming corn inbred line QB446
Method.
Background technique
In the 1980s, the corn variety planted in Guizhou or even Southwest Maize production is substantially local varieties, resist
Characteristic of disease is good, but the tall and big easy lodging of low output, plant, with No. 2 single in cenospecies, red No. 6 beautiful, red jade 13, agricultural university 60, tucks in list
13 equal introductions, the pandemics such as northern and southern leaf blight, curved spore leaf spot, rust in maize production；The 1990s, this
Team introduces Suwan1 (C11), 3, No. 5 group germplasms from Thailand, and then has selected a collection of single productive forces height, anti-tikka
Disease, the germplasm that blade is denseer, quality is good.It plays effective inhibiting effect to corn tikka class disease, but a disadvantage is that ripe
Phase is partially late, and seed-producing rate is low.
Suwan germplasm especially Suwan1 germplasm has become the important germplasm of Southwestern China Maize In Mountainous Area breeding, Suwan kind
Matter shows preferably comprehensive anti-(inverse) property, adaptability and barren tolerance in south China, and Exterior quality traits of kernel is good, bulk density
It is high；But also have the shortcomings that later period dehydration is slow, seed-producing rate is low, moisture content of kernels is high and breeding time is long.Lancaster germplasm is for I
The important corn germplasm of state Temperate Region in China, it is good to be mainly characterized by economic characters, but then show as in south China comprehensive resistance and
Adaptability is poor, and system of representatives Mo17 has the characteristics that spike length, seed-producing rate are high, dehydration is fast, coordinate force is high, moderate growth duration.It is beautiful
Rice is the important cereal crops in the world, has important strategic position in grain security；It is simultaneously also that processing industry etc. is important
Raw material.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides it is a kind of warm corn inbred line QB446 selection, it
The self-mating system QB446 that breeding obtains is to warm mutual conductance, poly- merit in the strain of one.
In order to achieve the above object, the present invention is achieved by the following technical programs: the choosing of warm corn inbred line QB446
Method is educated, is included the following steps:
Step 1: Suwan1, Suwan3 and No. Suwan5 three groups that disease-resistant/inverse property is strong, seed commodity is good are selected,
From above three group, takes 100-150 plants of tassel pollen mixtures to hybridize respectively with Mo17 at random and obtain 20-30 fruit ear, receive
Threshing is mixed when obtaining respectively, forms the basic population of three F1 generations；
Step 2:F1 generation in the individual plant selfing that florescence selection plant type is good, male and female are coordinated, each group's selfing 80-100
Fruit ear is simultaneously numbered, and fringe choosing is carried out when harvest, selects that 86% or more seed-producing rate, better resistance, the ripe phase is moderate and seed commodity is good
5-10, fruit ear as F2 for seed；F2 generation kind is at 15-30 head progeny row, by natural selection combination Manual selection techniques, through even
After continuous self cross and selection 5-6 generation, corn inbred line is selected；The microcommunity in F1-3 generation plantation, F3-7 generation plantation microcommunity；It is logical
The a collection of self-mating system that this method selects is crossed, is identified by being measured with productivity, is obtained from the basis Suwan1 (C11) × Mo17
The QB446 self-mating system of group.
Middle microcommunity described in step 2) refers to that each head progeny row plants 100-150 plants；Microcommunity refers to each head progeny row plantation
20-100 plants.
The natural selection is that different generations are planted under different ecological environments, carries out natural selection to bad gene
Selection.
The artificial selection is artificially strictly selected according to the breeding objective of formulation, and selection target character is protected
It stays, the character other than target is eliminated.
Beneficial effect
Compared with prior art, the selection of corn inbred line provided by the invention is: with tropical Suwan1 (C11) group
The F1 generation that body material hybridizes with temperate zone lancaster material representative system Mo17 is basic material, is combined by natural selection artificial
Selection method is mutually improved and is selected to two class materials.The advantages of present invention is exactly materials these two types of by this method handle
It is aggregating, breeding better resistance, seed-producing rate are high, the good Elite inbred of quality.
The selection of corn inbred line provided by the invention microcommunity in F1-3 generation plantation, F3-7 generation plantation groupuscule
Body keeps the relatively large group's selection of the procedure of breeding simpler, easy to operate, and chance of success is larger, and the manpower and material resources of cost are less.
The QB446 that selection provided by the invention selects has coordinate force height, moderate growth duration, seed-producing rate height, product
The features such as matter is good, disease resistance is strong, dehydration is fast, tassel row number is more, fringe is thick, wide suitable.It is commonly excellent by south China production and breeding
One of good self-mating system has been bred as adopted agriculture jade 1, gold and jade 838, bright list 007, hundred grand beautiful 958, friend's jade 109, mountain list 9, Guizhou Province blueness
446, the corn hybrid seeds such as friend's jade 109 are applied to production.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Specific embodiment
The embodiment of the present invention: it is grasped and is utilized by the character for a long time to two monoid germplasm, in conjunction with Southwestern China mountain area
Production practices, inventor's group are analyzed for the respective advantage of Soviet Union gulf germplasm and Lancaster germplasm and deficiency, using double
Fang Youdian is complementary to one another, the method to overcome the deficiency, proposes warm mutual conductance " Suwan/Lancaster " reclamation pattern.Using anti-
The Suwan germplasm that sick (inverse) property is strong, seed commodity is good hybridizes constructional base material with the Mo17 that dehydration is fast, seed-producing rate is high, leads to
Natural selection and Manual selection techniques are crossed, after continuous self cross and selection 5-6 generation, selects corn inbred line；It is planted in F1-3 generation
Middle microcommunity, F3-7 generation plantation microcommunity, selects corn inbred line.
It is carried out between natural selection and more head progeny rows, strain by the method for the present invention in China's Sanya, Hainan, Guizhou Kweiyang two places
Artificial selection improves disease resistance and in southern adaptability.Retain and holds green property, lodging resistance possessed by southern corn, emphasis choosing
Select that well developed root system, plant are delicate and pretty, robustness is good, the high single plant low with water content of seed-producing rate.Finally bring out coordinate force height, breeding time
Moderate, many merits self-mating system QB446 outstanding such as plant is delicate and pretty, disease resistance is strong, wide adaptability, seed-producing rate are high, quality is good.And
Assembled No. 1 beautiful adopted agriculture, gold and jade 838, bright list 007, hundred grand beautiful 958, the beautiful corn hybrid seeds such as 109 and Guizhou Province blueness 446 of friend pass through it is expensive
The authorization of state province, single No. 9 of mountain have passed through Sichuan Province's authorization, and friend's jade 109 has passed through national authorization.
Warm the selection of corn inbred line QB446: the spring in 2003 hybridizes group with Mo17 with Suwan1 group in Kweiyang
Build basic material.It is female parent with lancaster system of representatives Mo17, tropical Suwan1 group is male parent, with tropical Suwan1 group
Pollen mixture carries out the F1 generation for the M017/Suwan1 for hybridizing acquirement with the female fringe of Mo17；It is selfed to obtain F2 by bagging with F1 generation
The different fruit ears in generation；With F2 for fruit ear kind at different head progeny rows, selects excellent head progeny row bagging to be selfed by Kweiyang, Sanya two places, add
Fast beneficial gene separation, by the identification and screening to characters such as disease resistance, lodging resistance, robustnesses, by its fruit ear list when harvest
Fringe threshing, 30 head progeny rows chosen every year, next season are sowed by head progeny row, and the florescence selects the selfing of fine individual plant bagging, continuously certainly
It handed over for 5 generations, the winter in 2006 saves QB397~QB499 self-mating system totally 103 in Sanya number.
It surveys with combining, accelerates breeding hybridized process.
By 3 years it is continuous selfing and selection, character is basicly stable, the winter in 2006 while selecting self-mating system, root
According to miscellaneous excellent group, it is measured respectively with germplasm materials such as the auspicious moral of category, pioneers, the Spring Equinox in 2007 is not on Kweiyang, Bijie, Dejiang and other places
Qualification test is carried out, as a result QB446 shows higher coordinate force, and the performance of test cross kind is disease-resistant, plant type is more delicate and prettier, big fringe, goes out seed
The features such as rate is high, it is the most prominent with yield.
The self-mating system QB446 that method provided by the invention selects is compared with current domestic Lancaster blood relationship system:
The Inbred Lines of Southwestern China Maize Region are had become, Comprehensive Traits are excellent, and disease resistance is good, wide adaptability, are
Feature of the lancaster germplasm not available for south.According to 2013 in Kweiyang qualification result, QB446 seed compared with Mo17
Grain type becomes solids by dent, and the resistance of rust and large and small pinta improves 2-4 grades.
The self-mating system QB446 and current southwest Major Maize germplasm materials that method provided by the invention selects
The comparison of Suwan system:
Its seed-producing rate is high, and the ripe phase is moderate, and dehydration property is preferable, is current southwest Major Maize germplasm materials Suwan system
Not available.But it remains Suwan germplasm and has that disease-resistant, resistance is strong, resistance to lean, wide adaptability, seed commodity are good etc. and is excellent
Point is still the Inbred Lines of Southwestern China Maize Region.According to 2013 in Kweiyang qualification result, QB446 ratio Suwan1
(C11) seed-producing rate improves 8.97%, and water content reduces 10%.
The excellent genes both combined, plant is delicate and pretty, and disease resistance is good, wide adaptability, big panicle many grains per panicle, and seed-producing rate is high, matches
Resultant force is high.From disease resistance and kind, the heredity disease-resistant gene of Suwan germplasm materials resists various leaf spots, live pole at
Ripe, seed solids, quality are good；Take a fancy to from breeding time and yield, the characteristics of heredity lancaster germplasm materials, breeding time
Moderate, the thin seed-producing rate height of axis, harvest time water content are lower.The Plant new variety protection number of being authorized of QB446: CNA20130053.7
QB446 applicable cases:
Adopted agriculture is No. 1 beautiful:
Adopted agriculture beautiful No. 1 is with QB446 for female parent, Mid-late ripening corn hybrid seed made of QB1 assembles for male parent, 2010~
Transregional group of Corn In Guizhou Province regional testing of participation in 2011, two 651.1 kilograms of annual per mu yields increase production 8.99% than control,
552.8 kilograms of province's pilot production average yield per mu in 2011, than control volume increase 5.27%.Pass through Farm Crop in Guizhou product within 2012
The authorization of kind validation board.
Gold and jade 838:
Gold and jade 838 is with QB1018 for female parent, Mid-late ripening corn hybrid seed made of QB446 assembles for male parent, 2012
Transregional group of Corn In Guizhou Province regional testing of participation in~2013 years, two 655.7 kilograms of annual per mu yields increase production 9.8% than control,
637.1 kilograms of province's pilot production average yield per mu in 2013 passes through Farm Crop in Guizhou kind in 2014 than control volume increase 8.87%
Validation board's authorization.
Bright list 007:
Bright list 007 is with QB1577 for female parent, Mid-late ripening corn hybrid seed made of QB446 assembles for male parent, 2015
~2016 years participation Corn In Guizhou Province regional testing east groups, two 706.3 kilograms of annual per mu yields increase production 11.93% than control,
566.6 kilograms of province's pilot production average yield per mu in 2016 passes through Farm Crop in Guizhou kind in 2017 than control volume increase 1.48%
Validation board's authorization.
Hundred grand beautiful 958:
Hundred grand beautiful 958 be with Y433 for female parent, Mid-late ripening corn hybrid seed made of QB446 assembles for male parent, 2014
Transregional group of Corn In Guizhou Province regional testing of participation in~2015 years, two 682.8 kilograms of annual per mu yields increase production 10.91% than control,
557.5 kilograms of province's pilot production average yield per mu in 2015 passes through Farm Crop in Guizhou kind in 2016 than control volume increase 12.5%
Validation board's authorization.
Friendly jade 109:
Friendly jade 109 is with SD344 for female parent, Mid-late ripening corn hybrid seed made of QB446 assembles for male parent, 2014~
Transregional group of Corn In Guizhou Province regional testing of participation in 2015, two 625.15 kilograms of annual per mu yields increase production 12.39% than control,
539.9 kilograms of province's pilot production average yield per mu in 2015 passes through Farm Crop in Guizhou kind in 2016 than control volume increase 8.97%
Validation board's authorization.
Mountain is No. 9 single:
Single No. 9 of mountain is with SD375 for female parent, Mid-late ripening corn hybrid seed made of QB446 assembles for male parent, 2013~
The flat mound group of participation Sichuan Province Corn Regional Test in 2014, two 541.59 kilograms of annual per mu yields increase production 6.7% than control,
550.92 kilograms of Guizhou Province's pilot production average yield per mu in 2015 passes through Sichuan Province crops in 2017 than control volume increase 7.4%
The authorization of the variety certification committee.
Guizhou Province blueness 446:
Guizhou Province blueness 446 is with QB1545 for female parent, silage corn cenospecies made of QB446 assembles for male parent, 2016~
Participation Corn In Guizhou Province regional testing ensiling group in 2017, biennial 3773.5 kilograms of the average yield per mu of produce amount fresh weight, than control
Volume increase 13.83%, 4211.5 kilograms of average yield per mu of province's pilot production biological yield fresh weight in 2015 increase production 15.12% than control,
It is authorized by the Farm Crop in Guizhou variety certification committee within 2018.
Friendly jade 106:
Friendly jade 106 is with SD412 for female parent, and GH446 (QB446) is Mid-late ripening corn hybrid seed made of male parent assembles,
The country's Corn Regional Test of participation in 2015~2016 southwest group, two 596.15 kilograms of annual per mu yields are increased production than control
8.63%, 600.8 kilograms of pilot production average yield per mu in 2017 passes through national crops in 2018 than control volume increase 13.8%
The authorization of the variety certification committee.
Self-mating system QB446 can be applied to breeding hybridized and inbred line breeding by more corn breeders in the five-year
Basic material improvement in, will effectively play that its high yield, disease-resistant, seed commodity is good, seed-producing rate is high, the fast feature of dehydration.
1 QB446 of table is compared with Suwan1 (C11), Mo17 objective trait
(Kweiyang in 2013)
As it can be seen that the QB446 that breeding obtains by means of the present invention is with a wide range of applications, and it is proven to have pole
High application value.Have been provided with significant commercial success.
Above description has shown and described several preferred embodiments of invention, but as previously described, it should be understood that invention is not
It is confined to form disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations, modification
And environment, and can be carried out within that scope of the inventive concept describe herein by the above teachings or related fields of technology or knowledge
Change.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of invention, then it all should be in the appended power of invention
In the protection scope that benefit requires.
Claims (4)
1. a kind of selection for warming corn inbred line QB446, which comprises the steps of:
Step 1: Suwan1, Suwan3 and No. Suwan5 three groups that disease-resistant/inverse property is strong, seed commodity is good are selected, from upper
It states in three groups, takes 100-150 plants of tassel pollen mixtures to hybridize respectively with Mo17 at random and obtain 20-30 fruit ear, when harvest
Threshing is mixed respectively, forms the basic population of three F1 generations；
In step 2:F1 generation, is selfed 80-100 fruit ear in the individual plant selfing that florescence selection plant type is good, male and female are coordinated, each group
And number, fringe choosing is carried out when harvest, selects seed-producing rate in 86% or more, better resistance, the fruit that the ripe phase is moderate and seed commodity is good
Fringe 5-10 as F2 for seed；F2 generation kind is at 15-30 head progeny row, by natural selection combination Manual selection techniques, through continuous
After self cross and selection 5-6 generation, corn inbred line is selected；The microcommunity in F1-3 generation plantation, F3-7 generation plantation microcommunity；By this
The a collection of self-mating system that method selects is identified by being measured with productivity, is obtained from Suwan1 × Mo17 basic population
QB446 self-mating system.
2. the selection of warm corn inbred line QB446 according to claim 1, it is characterised in that: step 2) is described
Middle microcommunity refer to that each head progeny row plants 100-150 plants；Microcommunity refers to that each head progeny row plants 20-100 plants.
3. the selection of warm corn inbred line QB446 according to claim 1, it is characterised in that: the nature
Selection is that different generations are planted under different ecological environments, carries out natural selection selection to bad gene.
4. the selection of warm corn inbred line QB446 according to claim 1, it is characterised in that: described is artificial
Selection is that artificially stringent selection is carried out according to the breeding objective of formulation, and selection target character retains, the character other than target is washed in a pan
It eliminates.
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Cited By (6)
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| CN111837942A (en) * | 2020-08-19 | 2020-10-30 | 江苏沿江地区农业科学研究所 | Valence-by-valence incremental germplasm innovation method for corn resistance yield multi-trait combined improvement |
| CN112640774A (en) * | 2021-01-10 | 2021-04-13 | 贵州省旱粮研究所 | Method for breeding warm maize inbred line by using stepwise improvement strategy |
| CN113973709A (en) * | 2021-12-01 | 2022-01-28 | 安徽省农业科学院烟草研究所 | Method for creating high-yield multi-resistance maize inbred line suitable for 33-degree northern latitude areas |
| CN114303941A (en) * | 2022-01-25 | 2022-04-12 | 泸州金土地种业有限公司 | Breeding method of three-high one-excellent corn inbred line (FQ920) |
| CN115104526A (en) * | 2022-07-26 | 2022-09-27 | 文山壮族苗族自治州农业科学院 | Breeding method of high-quality high-combining ability corn inbred line |
| CN115589939A (en) * | 2022-10-12 | 2023-01-13 | 新疆农垦科学院（Cn） | Breeding method of silage corn male parent |
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| CN114303941A (en) * | 2022-01-25 | 2022-04-12 | 泸州金土地种业有限公司 | Breeding method of three-high one-excellent corn inbred line (FQ920) |
| CN115104526A (en) * | 2022-07-26 | 2022-09-27 | 文山壮族苗族自治州农业科学院 | Breeding method of high-quality high-combining ability corn inbred line |
| CN115589939A (en) * | 2022-10-12 | 2023-01-13 | 新疆农垦科学院（Cn） | Breeding method of silage corn male parent |
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