CN109220783A - A kind of good quality and high output extensively fits the breeding method of corn variety - Google Patents
A kind of good quality and high output extensively fits the breeding method of corn variety Download PDFInfo
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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 the breeding methods that a kind of good quality and high output extensively fits corn variety, comprising the following steps: A, is selfed by local preferred strain, obtains kind S1, kind S1 is divided for two parts, respectively S1-1 and S1-2；B, kind S1-1 is hybridized with kind " tucking in 478 ", obtains kind S2-1；C, kind S2-1 was selfed for 4 to 7 generations, obtains kind S3-1；D, kind S1-2 is hybridized with kind " tucking in 107 ", obtains kind S2-2；E, kind S2-2 was selfed for 4 to 7 generations, obtains kind S3-2；F, using kind S3-1 as female parent, kind S3-2 is as male parent and is hybridized, and kind S4 is obtained；G, kind S4 is selfed, obtains kind S5.Using local preferably strain and existing outstanding kind as basic material, the seed hybridized can be well adapted for local environment, while improve the resistance of plant, and Ameliorative character improves the yield and quality of corn.
Description
Technical field
The present invention relates to breeding technical fields, and in particular to a kind of good quality and high output extensively fits the breeding method of corn variety.
Background technique
Corn is world's important crops, and total output is only second to wheat, occupies second, corn has gone up as China first greatly
Invention cereal crops have important strategic position in grain security.China's modern times Corn Industrialization is led and supported, is
The basic task of national invention Maize Industry technical system scientific and technological progress.
Currently, the existing corn variety in China is not able to satisfy production needs, mainly the not strong, varietal character including kind resistance
Invention shape is inadaptable, seed quality is inadaptable, it is difficult to adapt to the requirement of maize production mechanization.Maize seed industry development is opposite to be fallen
Afterwards, the situation that face invention is faced is especially severe, although domestic corn variety quantity is more, original self-mating system level is low, it is difficult to
With external some advantage invention variety competitions.
The arable land distribution in China is very wide, and different regional climate conditions is different, but in breeding, usually adopts
With certain species female parent and male parent cultivated, obtained corn is promoted on a large scale, do not account for different geographical weather,
The corn yield of the difference such as soil, some areas is improved, but may cause new varieties because environment is different there are also some areas
Local environment can not be adapted to, causes yield to reduce instead.
Corn research institute of academy of agricultural sciences of " tucking in 478 " Laizhou City of Shandong Province Mr. Li Denghai is from Shen 5003 × U8112 filial generation
In the second cycle line selected, there is the advantages that coordinate force is high, and plant is short, and plant type is compact, and comprehensive agronomy character is good and genetic force is strong, be
Chinese forth generation corn variety Yedan No.13 is maternal." tucking in 107 " is selected from XL80 by Laizhou academy of agricultural sciences, is Spread in China area
Biggish cenospecies tucks in single No. 2 female parents, it has, and mass of 1000 kernel is high, embryo is big, plant skin depth, germination is to epidemic disaster requirement
Many particularity such as tight are that Chinese third generation corn variety tucks in single No. 2 female parents.
Summary of the invention
The purpose of the present invention is to provide the breeding methods that a kind of good quality and high output extensively fits corn variety, in local existing jade
Hybrid breeding is carried out on the basis of rice kind, local environment can be better adapted to, while improveing the quality of corn, improves yield.
The object of the present invention is achieved like this: a kind of good quality and high output extensively fits the breeding method of corn variety, including with
Lower step:
A, it is selfed by local preferred strain, obtains kind S1, kind S1 is divided for two parts, respectively S1-1 and S1-2；
B, kind S1-1 is hybridized with kind " tucking in 478 ", obtains kind S2-1；
C, kind S2-1 was selfed for 4 to 7 generations, obtains kind S3-1；
D, kind S1-2 is hybridized with kind " tucking in 107 ", obtains kind S2-2；
E, kind S2-2 was selfed for 4 to 7 generations, obtains kind S3-2；
F, using kind S3-1 as female parent, kind S3-2 is as male parent and is hybridized, and kind S4 is obtained；
G, kind S4 is selfed, obtains kind S5.
Further, in step, in 5 generations, were selfed by local preferred strain, obtain kind S1.
Further, in step C, in kind S2-1 6 generations of selfing, obtain kind S3-1, the specific steps of selfing are as follows:
Sowing, soil moisture are maintained at 70%~90%；When plant height reaches 10~15cm, soil moisture is gradually decrease to
60%~70%；After one month, soil moisture is gradually decrease to 50%~60%；After one month, soil moisture is gradually decrease to
40%~50%, until corn maturation；
Choose seed of the fruit ear for meeting the following conditions as next generation's selfing:
Full grains, color are in yellow or golden yellow；Plant height is relatively low, specially 160cm~200cm；70~95 lis of Ear height
Rice, 14~18 centimetres of spike length, thick 4~6 centimetres of fringe, 1 centimetre of ear barren tip is hereinafter, 10~14 row of tassel row number, row grain number 25~35, and thousand
Weigh 250~350g.
Further, in step E, in kind S2-2 6 generations of selfing, obtain kind S3-2, the specific steps of selfing are as follows:
Sowing, soil moisture are maintained at 70%~80%；When plant height reaches 10~15cm, by soil moisture gradually rise to
80%~90%, after maintaining 20 days, soil moisture is reduced to 70% to 80%；After one month, by soil moisture gradually rise to
90%~100%, after maintaining 20 days, soil moisture is reduced to 70% to 80%；After one month, by soil moisture gradually rise to
100%~130%, after maintaining 20 days, soil moisture is reduced to 70% to 80%；
After corn is mature, seed of the fruit ear for meeting the following conditions as next generation's selfing is chosen:
Full grains, color are in yellow or golden yellow；Plant height is relatively low, specially 160cm~200cm；70~95 lis of Ear height
Rice, 14~18 centimetres of spike length, thick 4~6 centimetres of fringe, 1 centimetre of ear barren tip is hereinafter, 10~14 row of tassel row number, row grain number 25~35, and thousand
Weigh 250~350g.
Further, in step G, kind S4 was selfed for 5 generations, obtains kind S5.
The beneficial effects of the present invention are: the preferred strain of local corn has been already adapted to the environment such as local weather, soil, benefit
Use local preferably strain and existing outstanding kind as basic material, the seed hybridized can be well adapted for local ring
Border, while improving the resistance of plant, Ameliorative character improves the yield and quality of corn.
Specific embodiment
Below with reference to embodiment, the present invention is further described.
A kind of good quality and high output of the invention extensively fits the breeding method of corn variety, comprising the following steps:
A, in 5 generations, were selfed by local preferred strain, obtain kind S1, kind S1 is divided for two parts, respectively S1-1 and S1-2.
Locality refers to breeding location, and the culture of each area corn seed is carried out in this area.Local preferably strain refers to full grains,
Color is in yellow or golden yellow, and plant height is relatively low, and fringe position is relatively low, the elite plant of no disease and pests harm.Local preferably strain is passed through
Mostly generation breeding, can adapt to the environment such as local soil, weather, select local corn variety as the basic material hybridized
One of, the seed hybridized can be well adapted for local environment, while improve the resistance of plant, Ameliorative character, improve beautiful
The yield and quality of rice.
B, kind S1-1 is hybridized with kind " tucking in 478 ", obtains kind S2-1.
C, kind S2-1 was selfed for 4 to 7 generations, obtains kind S3-1；The specific steps of selfing are as follows:
Sowing, soil moisture are maintained at 70%~90%；When plant height reaches 10~15cm, soil moisture is gradually decrease to
60%~70%；After one month, soil moisture is gradually decrease to 50%~60%；After one month, soil moisture is gradually decrease to
40%~50%, until corn maturation.
Choose seed of the fruit ear for meeting the following conditions as next generation's selfing:
Full grains, color are in yellow or golden yellow；Plant height is relatively low, specially 160cm~200cm；70~95 lis of Ear height
Rice, 14~18 centimetres of spike length, thick 4~6 centimetres of fringe, 1 centimetre of ear barren tip is hereinafter, 10~14 row of tassel row number, row grain number 25~35, and thousand
Weigh 250~350g.
D, kind S1-2 is hybridized with kind " tucking in 107 ", obtains kind S2-2." tucking in 478 " and " tucking in 107 " is existing excellent
Non-defective unit kind has the characteristics that disease and insect resistance is strong, anti-fall, yield is high, " will tuck in 478 ", after " tucking in 107 " hybridizes with native breed, and obtain
To kind have " tucking in 478 " and " tucking in 107 " the advantages of, and local environment can be well adapted for, improve the production of this area
Amount.
E, kind S2-2 was selfed for 4 to 7 generations, obtains kind S3-2；The specific steps of selfing are as follows:
Sowing, soil moisture are maintained at 70%~80%；When plant height reaches 10~15cm, by soil moisture gradually rise to
80%~90%, after maintaining 20 days, soil moisture is reduced to 70% to 80%；After one month, by soil moisture gradually rise to
90%~100%, after maintaining 20 days, soil moisture is reduced to 70% to 80%；After one month, by soil moisture gradually rise to
100%~130%, after maintaining 20 days, soil moisture is reduced to 70% to 80%；
After corn is mature, seed of the fruit ear for meeting the following conditions as next generation's selfing is chosen:
Full grains, color are in yellow or golden yellow；Plant height is relatively low, specially 160cm~200cm；70~95 lis of Ear height
Rice, 14~18 centimetres of spike length, thick 4~6 centimetres of fringe, 1 centimetre of ear barren tip is hereinafter, 10~14 row of tassel row number, row grain number 25~35, and thousand
Weigh 250~350g.
F, using kind S3-1 as female parent, kind S3-2 is as male parent and is hybridized, and kind S4 is obtained.
G, kind S4 was selfed for 5 generations, obtains kind S5.
Soil moisture herein refers to the ratio of moisture weight and soil dry weight in soil.The growth of corn needs to close
The moisture of foot is fitted, but weather is unable to control, drought, big flood are all to lead to the major reason of the underproduction, and therefore, the drought resisting of corn resists
Flooded performance is even more important.In above-mentioned steps C, drought environment is simulated by reducing soil moisture, can be grown in drought environment
Gesture good stand is just provided with certain drought resistance, by inbreeding of more generation, can obtain that drought resistance is relatively strong and drought resistance is stablized
Kind.Similarly, in step E, flood environment is simulated by increasing soil moisture, can be grown fine in flood environment
Plant is just provided with certain Flood resistance, by inbreeding of more generation, can obtain Flood resistance compared with strong and stable Flood resistance kind.Most
Afterwards by two kinds of mixing breeds, it will be able to obtain the new varieties of drought resistance and Flood resistance.
Embodiment one
Breeding, this area height above sea level 1000m or so are carried out in the county b of the city a of Yunnan Province.
The original preferred strain in the county b was selfed for 4 generations, obtains kind S1, kind S1 divide for two parts, respectively S1-1 with
S1-2.Kind S1-1 is hybridized with kind " tucking in 478 ", obtains kind S2-1.Kind S2-1 was selfed for 4 generations, is obtained
Kind S3-1.The specific steps of selfing are as follows:
Sowing, soil moisture are maintained at 70%；When plant height reaches 10cm, soil moisture is gradually decrease to 60%；One
After month, soil moisture is gradually decrease to 50%；After one month, soil moisture is gradually decrease to 40%, until corn maturation.
Choose seed of the fruit ear for meeting the following conditions as next generation's selfing: full grains, color are in yellow or gold
Yellow；Plant height is relatively low, specially 160cm~200cm；70~95 centimetres of Ear height, 14~18 centimetres of spike length, thick 4~6 lis of fringe
Rice, 1 centimetre of ear barren tip is hereinafter, 10~14 row of tassel row number, row grain number 25~35,250~350g of mass of 1000 kernel.
Kind S1-2 is hybridized with kind " tucking in 107 ", obtains kind S2-2, kind S2-2 was selfed for 4 generations, obtains kind
S3-2；The specific steps of selfing are as follows:
Sowing, soil moisture are maintained at 70%；When plant height reaches 10cm, soil moisture is gradually risen to 80% %, dimension
After holding 20 days, soil moisture is reduced to 70%%；After one month, soil moisture is gradually risen to 90%, it, will after maintaining 20 days
Soil moisture is reduced to 70%；After one month, soil moisture is gradually risen to 100%, after maintaining 20 days, soil moisture is reduced
To 70%；
After corn is mature, choose seed of the fruit ear for meeting the following conditions as next generation's selfing: full grains, color are in yellow
Or it is golden yellow；Plant height is relatively low, specially 160cm~200cm；70~95 centimetres of Ear height, 14~18 centimetres of spike length, fringe thick 4
~6 centimetres, 1 centimetre of ear barren tip is hereinafter, 10~14 row of tassel row number, row grain number 25~35,250~350g of mass of 1000 kernel.
Using kind S3-1 as female parent, kind S3-2 is as male parent and is hybridized, and kind S4 is obtained.
Kind S4 was selfed for 4 generations, obtains kind S5.
Kind S5 is averaged 120 days or so breeding time in the county b popularizing planting, and plant type half is compact, average 220.0 lis of plant height
Rice, drought resisting, Flood resistance are strong, and 90~105 centimetres of Ear height, 17.5~19.0 centimetres of spike length, average thick 5.1 centimetres, 1 li of ear barren tip of fringe
Rice is hereinafter, 14~16 row of tassel row number, average row grain number 32.7, average mass of 1000 kernel 305.5g average out seed 80.5%, averagely list
Ear weight 177.6g, average lodging rate 3.3%, the rate of falling folding 0.0%, half dent type of seed yellow, cob are red.Quality Detection: hold
Weight 756g/L, moisture 10.8%, crude protein 8.34%, crude fat 3.55%, Crude starch 75.96%.
Embodiment two
Breeding, this area height above sea level 1500m or so are carried out in the county d of the city c of Yunnan Province.
The original preferred strain in the county d was selfed for 5 generations, obtains kind S1, kind S1 divide for two parts, respectively S1-1 with
S1-2.Kind S1-1 is hybridized with kind " tucking in 478 ", obtains kind S2-1.Kind S2-1 was selfed for 6 generations, is obtained
Kind S3-1.The specific steps of selfing are as follows:
Sowing, soil moisture are maintained at 80%；When plant height reaches 13cm, soil moisture is gradually decrease to 65%；One
After month, soil moisture is gradually decrease to 55%；After one month, soil moisture is gradually decrease to 45%, until corn maturation.
Choose seed of the fruit ear for meeting the following conditions as next generation's selfing: full grains, color are in yellow or gold
Yellow；Plant height is relatively low, specially 160cm~200cm；70~95 centimetres of Ear height, 14~18 centimetres of spike length, thick 4~6 lis of fringe
Rice, 1 centimetre of ear barren tip is hereinafter, 10~14 row of tassel row number, row grain number 25~35,250~350g of mass of 1000 kernel.
Kind S1-2 is hybridized with kind " tucking in 107 ", obtains kind S2-2, kind S2-2 was selfed for 6 generations, obtains kind
S3-2；The specific steps of selfing are as follows:
Sowing, soil moisture are maintained at 75%；When plant height reaches 13cm, soil moisture is gradually risen to 85%, is maintained
After 20 days, soil moisture is reduced to 75%；After one month, soil moisture is gradually risen to 95%, after maintaining 20 days, by soil
Humidity is reduced to 75%；After one month, soil moisture is gradually risen to 120%, after maintaining 20 days, soil moisture is reduced to
75%；
After corn is mature, choose seed of the fruit ear for meeting the following conditions as next generation's selfing: full grains, color are in yellow
Or it is golden yellow；Plant height is relatively low, specially 160cm~200cm；70~95 centimetres of Ear height, 14~18 centimetres of spike length, fringe thick 4
~6 centimetres, 1 centimetre of ear barren tip is hereinafter, 10~14 row of tassel row number, row grain number 25~35,250~350g of mass of 1000 kernel.
Using kind S3-1 as female parent, kind S3-2 is as male parent and is hybridized, and kind S4 is obtained.
Kind S4 was selfed for 5 generations, obtains kind S5.
Kind S5 is averaged 125 days or so breeding time in the county d popularizing planting, and plant type half is compact, average 203.5 lis of plant height
Rice, 83~98 centimetres of Ear height, 19.0~21.0 centimetres of spike length, average thick 5.3 centimetres of fringe, 1 centimetre of ear barren tip is hereinafter, tassel row number 14
~16 rows, average row grain number 35.7, average mass of 1000 kernel 325.5g, seed 80.7%, average grain weight per panicle 187.6g averagely fall out
Volt rate 3.3%, the rate of falling folding 0.0%, half dent type of seed yellow, cob are red.Quality Detection: bulk density 759g/L, moisture 10.3%,
Crude protein 8.87%, crude fat 3.43%, Crude starch 76.36%.
Embodiment three
Breeding, this area height above sea level 2000m or so are carried out in the county f of the city e of Yunnan Province.
The original preferred strain in the county f was selfed for 6 generations, obtains kind S1, kind S1 divide for two parts, respectively S1-1 with
S1-2.Kind S1-1 is hybridized with kind " tucking in 478 ", obtains kind S2-1.Kind S2-1 was selfed for 7 generations, is obtained
Kind S3-1.The specific steps of selfing are as follows:
Sowing, soil moisture are maintained at 90%；When plant height reaches 15cm, soil moisture is gradually decrease to 70%；One
After month, soil moisture is gradually decrease to 60%；After one month, soil moisture is gradually decrease to 50%, until corn maturation.
Choose seed of the fruit ear for meeting the following conditions as next generation's selfing: full grains, color are in yellow or gold
Yellow；Plant height is relatively low, specially 160cm~200cm；70~95 centimetres of Ear height, 14~18 centimetres of spike length, thick 4~6 lis of fringe
Rice, 1 centimetre of ear barren tip is hereinafter, 10~14 row of tassel row number, row grain number 25~35,250~350g of mass of 1000 kernel.
Kind S1-2 is hybridized with kind " tucking in 107 ", obtains kind S2-2, kind S2-2 was selfed for 7 generations, obtains kind
S3-2；The specific steps of selfing are as follows:
Sowing, soil moisture are maintained at 80%；When plant height reaches 15cm, soil moisture is gradually risen to 90%, is maintained
After 20 days, soil moisture is reduced to 80%；After one month, soil moisture is gradually risen to 100%, it, will be native after maintaining 20 days
Earth humidity is reduced to 80%；After one month, soil moisture is gradually risen to 130%, after maintaining 20 days, soil moisture is reduced to
80%；
After corn is mature, choose seed of the fruit ear for meeting the following conditions as next generation's selfing: full grains, color are in yellow
Or it is golden yellow；Plant height is relatively low, specially 160cm~200cm；70~95 centimetres of Ear height, 14~18 centimetres of spike length, fringe thick 4
~6 centimetres, 1 centimetre of ear barren tip is hereinafter, 10~14 row of tassel row number, row grain number 25~35,250~350g of mass of 1000 kernel.
Using kind S3-1 as female parent, kind S3-2 is as male parent and is hybridized, and kind S4 is obtained.
Kind S4 was selfed for 6 generations, obtains kind S5.
Kind S5 is averaged 129 days or so breeding time in the county f popularizing planting, and plant type half is compact, average 186.5 lis of plant height
Rice, 75~93 centimetres of Ear height, spike length 17.5.0~20.5 centimetre, average thick 5.0 centimetres of fringe, 1 centimetre of ear barren tip hereinafter, tassel row number
14~16 rows, average row grain number 32.4, average mass of 1000 kernel 319.7g, seed 80.1%, average grain weight per panicle 179.2g are average out
Lodging rate 3.3%, the rate of falling folding 0.0%, half dent type of seed yellow, cob are red.Quality Detection: bulk density 754g/L, moisture 9.4%,
Crude protein 8.95%, crude fat 3.78%, Crude starch 75.42%.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. the breeding method that a kind of good quality and high output extensively fits corn variety, which comprises the following steps:
A, it is selfed by local preferred strain, obtains kind S1, kind S1 is divided for two parts, respectively S1-1 and S1-2；
B, kind S1-1 is hybridized with kind " tucking in 478 ", obtains kind S2-1；
C, kind S2-1 was selfed for 4 to 7 generations, obtains kind S3-1；
D, kind S1-2 is hybridized with kind " tucking in 107 ", obtains kind S2-2；
E, kind S2-2 was selfed for 4 to 7 generations, obtains kind S3-2；
F, using kind S3-1 as female parent, kind S3-2 is as male parent and is hybridized, and kind S4 is obtained；
G, kind S4 is selfed, obtains kind S5.
2. the breeding method that a kind of good quality and high output according to claim 1 extensively fits corn variety, which is characterized in that in step
In rapid A, in 5 generations, were selfed by local preferred strain, obtain kind S1.
3. the breeding method that a kind of good quality and high output according to claim 1 extensively fits corn variety, which is characterized in that in step
In rapid C, in kind S2-1 6 generations of selfing, obtain kind S3-1, the specific steps of selfing are as follows:
Sowing, soil moisture are maintained at 70%~90%；When plant height reaches 10~15cm, soil moisture is gradually decrease to
60%~70%；After one month, soil moisture is gradually decrease to 50%~60%；After one month, soil moisture is gradually decrease to
40%~50%, until corn maturation；
Choose seed of the fruit ear for meeting the following conditions as next generation's selfing:
Full grains, color are in yellow or golden yellow；Plant height is relatively low, specially 160cm~200cm；70~95 lis of Ear height
Rice, 14~18 centimetres of spike length, thick 4~6 centimetres of fringe, 1 centimetre of ear barren tip is hereinafter, 10~14 row of tassel row number, row grain number 25~35, and thousand
Weigh 250~350g.
4. the breeding method that a kind of good quality and high output according to claim 1 extensively fits corn variety, which is characterized in that in step
In rapid E, in kind S2-2 6 generations of selfing, obtain kind S3-2, the specific steps of selfing are as follows:
Sowing, soil moisture are maintained at 70%~80%；When plant height reaches 10~15cm, by soil moisture gradually rise to
80%~90%, after maintaining 20 days, soil moisture is reduced to 70% to 80%；After one month, by soil moisture gradually rise to
90%~100%, after maintaining 20 days, soil moisture is reduced to 70% to 80%；After one month, by soil moisture gradually rise to
100%~130%, after maintaining 20 days, soil moisture is reduced to 70% to 80%；
After corn is mature, seed of the fruit ear for meeting the following conditions as next generation's selfing is chosen:
Full grains, color are in yellow or golden yellow；Plant height is relatively low, specially 160cm~200cm；70~95 lis of Ear height
Rice, 14~18 centimetres of spike length, thick 4~6 centimetres of fringe, 1 centimetre of ear barren tip is hereinafter, 10~14 row of tassel row number, row grain number 25~35, and thousand
Weigh 250~350g.
5. the breeding method that a kind of good quality and high output according to claim 1 extensively fits corn variety, which is characterized in that step
In G, kind S4 was selfed for 5 generations, obtains kind S5.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102960241A (en) * | 2012-12-11 | 2013-03-13 | 云南西都种业有限责任公司 | Seed selection and breeding method of hybrid corn new species |
| CN107047292A (en) * | 2017-06-08 | 2017-08-18 | 河北省农林科学院旱作农业研究所 | A kind of selection of corn variety |
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2018
- 2018-10-31 CN CN201811290329.0A patent/CN109220783A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102960241A (en) * | 2012-12-11 | 2013-03-13 | 云南西都种业有限责任公司 | Seed selection and breeding method of hybrid corn new species |
| CN107047292A (en) * | 2017-06-08 | 2017-08-18 | 河北省农林科学院旱作农业研究所 | A kind of selection of corn variety |
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