Method for rapidly breeding whole-growth-period salt-tolerant rice

A full-growth, salt-tolerant technology, applied in botany equipment and methods, plant genetic improvement, application, etc.

Active Publication Date: 2022-03-04
JIANGSU COASTAL AREA AGRI SCI RES INST
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the natural salt field is used for natural screening, and at the same time, the donor parent FL478 containing the salt-tolerant QTL-saltol is selected using laborato...

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
  • Method for rapidly breeding whole-growth-period salt-tolerant rice
  • Method for rapidly breeding whole-growth-period salt-tolerant rice
  • Method for rapidly breeding whole-growth-period salt-tolerant rice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] At present, most domestic units engaged in breeding and breeding of salt-tolerant rice are concentrated in coastal areas or inland areas with large areas of saline-alkali land. Salt rice germplasm resources, and the agronomic traits of the reported materials are poor, so they cannot be directly applied to the hybridization group. Salt-tolerant germplasm resources are also equipped with a large number of hybrid combinations, such as the use of restorer lines such as Pokkali and 9311, Yandao 4, Yanhui 559, Yanhui 269, and Minghui 63, as well as high-quality conventional indica rice Yuefengsimiao, Wushan Silk seedlings, Efeng silk seedlings, etc. were hybridized, but the offspring had disadvantages such as delayed growth period, higher plant height, and decreased seed setting rate, so it was impossible to breed suitable rice varieties for production. After a lot of cross-breeding and mating attempts, two parents, the intermediate material FL478 and Yuzhenxiang, were select...

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

No PUM Login to view more

Abstract

The invention discloses a method for rapidly breeding whole-growth-period salt-tolerant rice, and belongs to the technical field of crop breeding. The method comprises the following steps: by taking high-quality conventional medium-maturing late indica variety, namely Yunnan Indica variety, as a female parent and FL478 as a male parent, selfing a hybridized F1 generation, harvesting seeds F2-F3 generations, performing natural condition screening on the harvested seeds F2-F3 generations in a Yunnan coastal mud flat region, performing seedling stage screening on the F4 generations by using a high-concentration saline solution in a laboratory, performing whole-growth-period salt tolerance screening on the F5-F6 generations by increasing screening pressure, and performing selection in combination with a molecular marker RM3412 at the same time; selfing for a first generation, and selecting a rice line with 1-3 levels of salt tolerance, agronomic traits similar to those of conventional breeding, disease resistance similar to that of FL478 and quality similar to that of jade needle fragrance. According to the method, the whole-growth-period salt-tolerant new rice variety is rapidly cultivated through a means of combining natural conditions and laboratories, and the method has great significance in improving the utilization rate and economic benefits of saline-alkali land in China and relieving the global food crisis.

Description

technical field [0001] The invention belongs to the technical field of rice breeding, and in particular relates to a breeding method for rapid selection and breeding of salt-tolerant rice in the whole growth period. Background technique [0002] Rice is one of the most important food crops in the world. It is sensitive to salt damage. When the soluble salt concentration in the soil reaches 0.3%, it will show symptoms of damage, which will eventually lead to a significant reduction in yield. The world's saline-alkali land area accounts for about 1 / 3 of the land area, accounting for 20% of the world's total cultivated land area. The area of ​​saline-alkali land in China is about 20 million hm 2 . Due to the impact of many factors such as human activities, soil salinization is constantly devouring the land on which human beings live, and the area of ​​land available for cultivation is decreasing day by day. From the perspective of water resources, climate and ecology in my c...

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): A01H1/02A01H1/04
CPCA01H1/02A01H1/04Y02A40/10
Inventor 刘凯朱静雯代金英张桂云宛柏杰岳红亮赵绍路施伟孙一标胡蕾张梦龙程新杰严国红唐红生王爱民朱国永孙明法
Owner JIANGSU COASTAL AREA AGRI SCI RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap