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Method for selectively breeding broad-resistant sweet corn varieties

A technology for sweet corn and varieties, applied in the field of corn disease and pest resistance breeding, can solve the problems of less disease-resistant sweet corn germplasm resources, lack of germplasm resources, less resistance to various diseases and insect pests, etc., achieve excellent agronomic and yield traits, and increase economy. Benefit, the effect of increasing production

Inactive Publication Date: 2017-03-08
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of germplasm resources in non-sweet corn origin centers in my country, there are few germplasm resources of disease-resistant sweet corn. There are more monoclonal antibodies in my country's corn varieties, fewer varieties resistant to various diseases and insect pests, and those resistant to various diseases and insect pests. Sweet corn varieties are rarely reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) Select sweet corn variety Lutianyu No. 1 (P0), high-resistance corn head smut variety Mo17 (P1), high-resistance corn borer variety Zhongke 1 (P2), and high-resistance corn spot disease variety C103 ( P3), Qi 319 (P4), a highly resistant variety of corn embroider disease;

[0020] 2) Use P0 as the female parent to make crosses P0 / P1, P0 / P2, P0 / P3, P0 / P4, and get 4 hybrid F 1 , Respectively with F 1 -P1, F 1 -P2, F 1 -P3, F 1 -P4 means;

[0021] 3) Plant F 1 -P1, F 1 -P2, F 1 -P3, F 1 -8 plants for each of P4, bagged and selfed in flowering period, get F 2 Generation seed F 2 -P1, F 2 -P2, F 2 -P3, F 2 -P4, plant F separately 2 Seed generation, 40 plants for each combination were planted, and disease resistance was identified. For each combination, only the types of disease and pest resistance of its corresponding resistant parent were identified, and individual plants with high resistance to diseases and pests, plant leaf morphology and yield traits were screened out. Eac...

Embodiment 2

[0030] 1) Select sweet corn variety Lutianyu No. 2 (P0), high resistance to corn head smut Ji465 (P1), high resistance to corn borer Zhongke 1 (P2), and high resistance to corn spot disease C103 (P3), Qi 319 (P4), a highly resistant variety of corn embroider disease;

[0031] 2) Use P0 as the female parent to make crosses P0 / P1, P0 / P2, P0 / P3, P0 / P4, and get 4 hybrid F 1 , Respectively with F 1 -P1, F 1 -P2, F 1 -P3, F 1 -P4 means;

[0032] 3) Plant F 1 -P1, F 1 -P2, F 1 -P3, F 1 -8 plants for each of P4, bagged and selfed in flowering period, get F 2 Generation seed F 2 -P1, F 2 -P2, F 2 -P3, F 2 -P4, plant F separately 2 Seed generation, 40 plants for each combination were planted, and disease resistance was identified. For each combination, only the types of disease and pest resistance of its corresponding resistant parent were identified, and individual plants with high resistance to diseases and pests, plant leaf morphology and yield traits were screened out. Each group is self...

Embodiment 3

[0041] 1) Select the sweet corn variety Lutianyu No. 1 (P0), the highly resistant corn head smut variety Ji465 (P1), the highly resistant corn borer variety Zhongke 1 (P2), and the highly resistant corn spot disease variety C103 (P3), Qi 319 (P4), a highly resistant variety of corn embroider disease;

[0042] 2) Use P0 as the female parent to make crosses P0 / P1, P0 / P2, P0 / P3, P0 / P4, and get 4 hybrid F 1 , Respectively with F 1 -P1, F 1 -P2, F 1 -P3, F 1 -P4 means;

[0043] 3) Plant F 1 -P1, F 1 -P2, F 1 -P3, F 1 -8 plants for each of P4, bagged and selfed in flowering period, get F 2 Generation seed F 2 -P1, F 2 -P2, F 2 -P3, F 2 -P4, plant F separately 2 Seed generation, 40 plants for each combination were planted, and disease resistance was identified. For each combination, only the types of disease and pest resistance of its corresponding resistant parent were identified, and individual plants with high resistance to diseases and pests, plant leaf morphology and yield traits were...

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Abstract

The invention discloses a method for selectively breeding broad-resistant sweet corn varieties, and belongs to the field of technologies for breeding disease-resistant seeds of corns. The method has the advantages that hybridization and composite cross polymerization are carried out on parents which include high-yield high-quality sweet corn varieties, varieties with high sphacelotheca reiliana resistance, varieties with high ostrinia nubilalis resistance, varieties with high bipolaris maydis resistance and varieties with high puccinia polysora resistance, the sweetness and the disease resistance of the seeds of multiple generations are evaluated and screened, and accordingly the broad-resistant sweet corn varieties with high simultaneous resistance to four diseases, high sweetness and excellent agronomic and yield traits can be bred by the aid of the method.

Description

Technical field [0001] The invention specifically relates to a breeding method of broadly resistant sweet corn varieties, belonging to the technical field of corn disease and insect pest resistance breeding. Background technique [0002] As a subspecies of the genus Corn, sweet corn originated in the American continent. Sweet corn grains contain high sugar content during milk maturity. The grains of sweet corn during milk maturity are rich in water-soluble polysaccharides, protein, multiple free amino acids, vitamins, etc., also known as As fruit-vegetable corn, it is more and more favored by consumers for its unique flavor and nutritional value. The high-quality sweet corn with thin skin and no residue, sweet and crisp taste that can be eaten raw is also called fruit corn. With the adjustment of my country's planting structure, vigorously developing the sweet corn industry in my country will have important significance and broad prospects. With the continuous deepening of resea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 章清杞陈幼玉李美德杨帆
Owner FUJIAN AGRI & FORESTRY UNIV
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