Breeding method of waxy corn variety with high resistance against diseases and pests

A technology of pest resistance and waxy corn, applied in the direction of botany equipment and methods, application, plant gene improvement, etc., can solve the problems of reducing grain yield, harming corn, and loss of function of the damaged part, so as to increase economic benefits and increase production , superior agronomic and yield traits

CN106258949AInactive Publication Date: 2017-01-04FUJIAN AGRI & FORESTRY UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-01-04
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses a breeding method of a waxy corn variety with high resistance against diseases and pests, belonging to the technical field of corn disease-resistant breeding. In the invention, high-yield high-quality waxy corn variety, high-resistance bipolaris maydis variety, high-resistance sphacelotheca reiliana variety, high-resistance ostrinia nubilalis variety and high-resistance puccinia polysora variety are adopted as parents; and through hybridization and backcrossing polymerization and multiple generations of seed waxiness and disease resistance identification and screening, a hybrid waxy corn variety with high resistance against 4 diseases and pests, good waxiness and excellent agricultural and yield traits is obtained.
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Description

technical field

[0001] The invention specifically relates to a method for breeding waxy corn varieties with high resistance to diseases and insect pests, and belongs to the technical field of corn breeding for resistance to diseases and insect pests. Background technique

[0002] Waxy corn, also known as waxy corn, is a new type of common corn mutated and then artificially selected. Its grain endosperm starch is 100% amylopectin, and it is sticky and soft after cooking. . Since the starch in waxy corn grains is completely composed of amylopectin and controlled by waxiness, it has special uses in edible quality and industrial production. Waxy corn originated in China. After maize was introduced into China, the hard maize planted in Southwest China mutated, and the waxy type gradually appeared through artificial selection. In addition to being eaten fresh by humans as vegetable corn, this kind of corn can be used as livestock feed to improve feeding efficiency. There are a...

Examples

Embodiment 1

[0020] 1) The waxy corn variety Huyunuo 1 (P0), the high resistance corn head smut variety Mo17 (P1), the high resistance corn borer variety Zhongke No. 1 (P2), the high resistance corn small spot disease C103 ( P3), the high-resistant maize embroidery variety Qi 319 (P4) was used as the hybrid parent, P0 was used as the female parent, P1, P2, P3, and P4 were used as the male parent, and P0 / P1, P0 / P2, P0 / P3, P0 were used as hybrids / P4, get 4 hybrid F 1 , respectively with F 1 -P1, F 1 -P2, F 1 -P3, F 1 -P4 means;

[0021] 2) Plant F 1 -P1, F 1 -P2, F 1 -P3, F 1 10 plants of each of -P4 were bagged and self-crossed at the flowering stage to obtain F 2Generation Seed F 2 -P1, F 2 -P2, F 2 -P3, F 2 -P4;

[0022] 3) Plant F separately 2 Plant 40 plants for each combination, and carry out identification of disease resistance. Each combination only identifies the types of pests and diseases resistant to its corresponding resistant parents, and screens out 5 individua...

Embodiment 2

[0033] 1) Waxy corn variety SW22 (P0), corn head smut variety Ji 465 (P1) with high resistance to corn borer, Zhongke 1 variety with high resistance to corn borer (P2), C103 (P3) variety with high resistance to small spot of corn, The highly resistant corn embroidery variety Qi 319 (P4) was used as the hybrid parent, P0 was used as the female parent, P1, P2, P3, and P4 were used as the male parent, and P0 / P1, P0 / P2, P0 / P3, P0 / P4 were used as hybrids. Get 4 hybrid F 1 , respectively with F 1 -P1, F 1 -P2, F 1 -P3, F 1 -P4 means;

[0034] 2) Plant F 1 -P1, F 1 -P2, F 1 -P3, F 1 10 plants of each of -P4 were bagged and self-crossed at the flowering stage to obtain F 2 Generation Seed F 2 -P1, F 2 -P2, F 2 -P3, F 2 -P4;

[0035] 3) Plant F separately 2 Plant 40 plants for each combination, and carry out identification of disease resistance. Each combination only identifies the types of pests and diseases resistant to its corresponding resistant parents, and screens ...