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Breeding method of three-line male sterile line with high stress resistance and long panicle neck

A technology of three-line sterile line and long panicle neck, which is applied in the fields of botanical equipment and methods, application, plant gene improvement, etc. It can solve the problems of poor stress resistance and achieve the effect of increasing yield and good stress resistance

Active Publication Date: 2016-01-20
FUJIAN KINGSANTO DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the long-neck three-line male sterile line also has the problem of poor stress resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) The drought-resistant variety Luhan 1 (A), the cold-resistant variety Dongye No. 1 (B), the saline-alkali-tolerant variety Dongdao No. 4 (C) were selected as resistant parents, and the three-line maintainer line II-32eB1 with long panicle neck was selected as the reincarnation Parent (D), cross A / B and D / C respectively, get cross F 1 Substituted by F 1-AB and F 1-CD express;

[0020] 2) Plant F 1-AB and F 1-CD , in the flowering stage for hybrid F 1-CD / F 1-AB , have to resubmit F 1 (F 1-ABCD ), planting F 1-ABCD , self-inbred to get F 2-ABCD , planting F 2-ABCD , the population is 1200-1500 plants, and the drought resistance, cold resistance, and salt-alkali tolerance tests are carried out at the seedling stage to remove the seedlings that are not drought-resistant, cold-resistant, and salt-alkali-resistant, and list the seedlings with high drought resistance, high cold resistance, and high salt-alkali tolerance. mark, and select the rice plants listed on...

Embodiment 2

[0029] 1) The drought-resistant variety Luhan 1 (A), the cold-resistant variety Dongye No. 1 (B), and the saline-alkali-tolerant variety Dongdao No. 4 (C) were selected as resistant parents, and the three-line maintainer line Xieqingzao eB1 with long panicle neck was The recurrent parent (D) crosses A / B and D / C respectively to obtain cross F 1 Substituted by F 1-AB and F 1-CD express;

[0030] 2) Plant F 1-AB and F 1-CD , in the flowering stage for hybrid F 1-CD / F 1-AB , have to resubmit F 1 (F 1-ABCD ), planting F 1-ABCD , self-inbred to get F 2-ABCD , planting F 2-ABCD , the population is 1200-1500 plants, and the drought resistance, cold resistance, and salt-alkali tolerance tests are carried out at the seedling stage to remove the seedlings that are not drought-resistant, cold-resistant, and salt-alkali-resistant, and list the seedlings with high drought resistance, high cold resistance, and high salt-alkali tolerance. mark, and select the rice plants listed on...

Embodiment 3

[0039] 1) The drought-resistant variety Luhan 1 (A), the cold-resistant variety Dongye No. 1 (B), the saline-alkali-tolerant variety Dongdao No. 4 (C) were selected as the resistant parents, and the three-line maintainer Jin 23eB with long panicle neck was selected as the recurrent parent (D), make crosses A / B and D / C respectively, and get cross F 1 Substituted by F 1-AB and F 1-CD express;

[0040] 2) Plant F 1-AB and F 1-CD , in the flowering stage for hybrid F 1-CD / F 1-AB , have to resubmit F 1 (F 1-ABCD ), planting F 1-ABCD , self-inbred to get F 2-ABCD , planting F 2-ABCD , the population is 1200-1500 plants, and the drought resistance, cold resistance, and salt-alkali tolerance tests are carried out at the seedling stage to remove the seedlings that are not drought-resistant, cold-resistant, and salt-alkali-resistant, and list the seedlings with high drought resistance, high cold resistance, and high salt-alkali tolerance. mark, and select the rice plants lis...

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Abstract

The invention discloses a method for selecting a three-line sterile line with high stress resistance and long panicle neck, and belongs to the technical field of rice stress resistance breeding. In this method, the drought-resistant variety Luhan 1, the cold-resistant variety Dongye No. 1, and the saline-alkali-tolerant variety Dongdao No. 4 were selected as the resistant parents, and the long-neck three-line maintainer line eB was selected as the recurrent parent. The three kinds of resistance genes of rice stress resistance were aggregated into the three-line maintainer eB with long panicle neck. Reversible long-neck three-line maintainer line (stress-resistant eB line), crossing the stress-resistant eB line with the corresponding long-neck sterile line (eA line) and backcrossing for 3 generations can produce long panicles with high stress resistance Cervical three-line sterile line (stress-resistant eA line) can be used to prepare three-line hybrid rice to improve the stress resistance level of hybrid rice.

Description

Technical field [0001] The invention specifically involves the selection method of high -resistant anti -inverse long -splattered neck -in -child infertility system, which belongs to the field of rice anti -inverse breeding technology. Background technique [0002] As China's largest food crop, rice has made great contributions to solving China's food security and improving the level of people's health.Rice's anti -anti -reverse ability of various stress (adversity) factors such as cold, drought resistance, and salt resistance is called rice resistance.In recent years, the number of natural disasters around the world has occurred, and at the same time, the increase in population, the shortage of water resources, the trend of soil salinity desertification, and the shortage of agricultural labor force.Drought, low temperature, etc. have become the main cause of rice output loss. In recent years, breedingists have studied a lot of research on anti -reverse breeding mechanisms and an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02
Inventor 练进旺万华雄陈志伟章清杞
Owner FUJIAN KINGSANTO DEV CO LTD