Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hybrid seed production method for nitrogen efficient maize

A hybrid and corn technology, applied in the direction of botany equipment and methods, applications, plant gene improvement, etc., can solve the problems of nutrient stress tolerance and high nutrient efficiency germplasm that have not been fully developed and utilized

Inactive Publication Date: 2011-06-29
CHINA AGRI UNIV
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as nutritional traits are concerned, since the high-yield breeding process has generally been carried out under the condition of satisfying nutrients for a long time, most of the selected varieties are suitable for high fertilizer and water conditions, while germplasm that is relatively tolerant to nutrient stress or high nutrient efficiency has not been fully obtained. development and utilization of

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hybrid seed production method for nitrogen efficient maize
  • Hybrid seed production method for nitrogen efficient maize
  • Hybrid seed production method for nitrogen efficient maize

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0138] Embodiment 1, the preparation of nitrogen double high-efficiency hybrid

[0139] 1. Screening nitrogen-efficient maize inbred lines as parents

[0140] (1), parent screening method:

[0141] The corn inbred lines to be screened are planted under low-nitrogen and high-density conditions, and the planting management methods are as follows:

[0142] Fertilization treatment - nitrogen fertilizer is 45kg N / hm 2 , phosphate fertilizer is 100kg P 2 o 5 / hm 2 , potash fertilizer: 100kg K 2 O / hm 2 . All fertilizers were applied as base fertilizer at one time. The planting density is 100,000 plants / ha, and the row-to-plant spacing is adjusted according to the actual situation (you can choose a row-to-plant spacing of 60 cm and a plant-to-plant spacing of 17 cm; or a row-to-plant spacing of 50 cm and a plant-to-plant spacing of 20 cm).

[0143] (2) Screening criteria for parents:

[0144] Select an inbred line that meets at least one of the following conditions I, II and...

Embodiment 2

[0270] Embodiment 2, the preparation of high-nitrogen high-efficiency hybrid

[0271] 1. Maternal Screening

[0272] Xiyu 3 was continuously selfed for 8 generations, and the inbred lines obtained in each generation were planted according to the following method, and then screened according to the parental screening criteria in step 1 (2) of Example 1.

[0273] Planting management method: fertilization treatment - nitrogen fertilizer is 45kg N / hm 2 , phosphate fertilizer is 100kg P 2 o 5 / hm 2, potash fertilizer: 100kgK 2 O / hm 2 . All fertilizers were applied as base fertilizer at one time. The planting density is 100,000 plants / ha, and the row-to-plant spacing is adjusted according to the actual situation (you can choose a row-to-plant spacing of 60 cm and a plant-to-plant spacing of 17 cm; or a row-to-plant spacing of 50 cm and a plant-to-plant spacing of 20 cm).

[0274] As a result, the target inbred line meeting the screening criteria was obtained, which was used ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a hybrid seed production method for nitrogen efficient maize, which comprises the following steps of: selecting maize inbred lines shown as (1), (2) and (3) as a parent strain; hybridizing to obtain an F1 generation; selecting the maize F1 generation meeting the conditions shown as A, B and C to obtain a target new maize combination (or a new variety). By the method disclosed by the invention, a new maize variety is obtained, the utilization efficiency of nitrogen is improved, and the yield is obviously increased compared with a contrast. Therefore, the method disclosed by the invention is favorable for increasing the breeding efficiency of a new maize nitrogen efficient variety, and has a broad application prospect in the field of maize breeding.

Description

technical field [0001] The invention relates to a method for hybrid seed production of nitrogen-efficient corn. Background technique [0002] Corn is an important feed, economic and bioenergy crop, and its demand at home and abroad is increasing day by day. With population growth and economic development, my country's food demand will continue to show continuous rigid growth. To achieve China's food security in 2030, the total output must increase by more than 40% on the current basis, and the per unit yield must increase by more than 45%, that is, the average annual growth rate must reach 2.0%. Therefore, achieving sustained and stable increases in grain production and ensuring national food security are major tasks for my country's agriculture at present and for a long time to come. Corn, an important food resource, is playing an important role. [0003] High-yielding nitrogen-efficient varieties are one of the important ways to solve my country's food security, resourc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A01H1/02A01G1/00
Inventor 陈范骏米国华张福锁袁力行顾日良
Owner CHINA AGRI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com