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Method for Purification and Rejuvenation of Coix Local Varieties and Breeding of New Varieties

A technology for purifying and rejuvenating new varieties, applied in botany equipment and methods, plant gene improvement, application, etc., can solve the problems of rapid variety degradation, single variety, short production life, etc., achieve improved stress resistance, simple method, The effect of speeding up the breeding process

Active Publication Date: 2021-03-09
SUBTROPICAL CROPS INST OF GUIZHOU PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for the purification and rejuvenation of local varieties of Coix and the selection of new varieties. The method is simple, efficient and the target traits can be inherited stably.

Method used

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  • Method for Purification and Rejuvenation of Coix Local Varieties and Breeding of New Varieties
  • Method for Purification and Rejuvenation of Coix Local Varieties and Breeding of New Varieties

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Experimental program
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Effect test

Embodiment 1

[0034] Coix variety Xingren Xiaobaike has not been selected by the four nurseries, and the thousand-grain weight has dropped significantly for three consecutive years, and the variety has been seriously degraded; the thousand-grain weight has been stable for three consecutive years after being selected by the four nurseries, the ear shape is consistent, and the yellowing property is good. It is suitable for production and use. Long term. See Table 1 for details.

[0035] Table 1. Yield and thousand-grain weight of Xingren Xiaobaike four nurseries before and after selection

[0036]

Embodiment 2

[0038] In 2014, the high-yielding glutinous parent Qianyiyi No. 2 was selected as the female parent and the high-yielding plant type, compact and disease-resistant Y113 was selected as the male parent to produce the F1 generation. The F2 generation established a large low-generation population. The F3 generation began to select single-plant families through four nurseries, and selected The goal is to harvest the families that meet the standards, and conduct identification of agronomic characters. And through the strict selfing of the F4 and F5 generations and the continuous selection of the four nurseries, the ideal traits were selected with directional targets in the F6-F8 generation, and the selfing was stable for one generation, and the panicle type was concentrated in the middle and upper part, the plant type was compact, and waxy. , high-yield, and strong disease-resistant strains, conduct a yield comparison test for each strain, and perform a strain comparison test on the...

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Abstract

The invention discloses a method for purifying and rejuvenating local varieties of Job's tears and selecting new varieties, comprising the following steps: (1) selection of original species; (2) first year: seed selection nursery; (3) second year: (4) The third year: selection garden; (5) The fourth year: Yield testing garden; (6) The fifth year: Seed multiplication; It is a purified and rejuvenated strain with compact size, good quality and strong stress resistance. In addition, parent selection, hybridization, aggregation hybridization or backcrossing, or local varieties selection and breeding of mutant strains, identified genetically stable strains, can breed new varieties of Coix. The invention can improve the speed and efficiency of the purification and rejuvenation of the coix local varieties and the selection of new varieties, ensure the genetic stability of the coix variety in production, and significantly improve the quality and stress resistance.

Description

technical field [0001] The invention relates to the technical field of resource protection and breeding of Coix local varieties, in particular to a method for purifying and rejuvenating local Coix varieties and breeding new varieties. Background technique [0002] Job's tears is a traditional economic crop with both medicine and food, which has extremely high nutritional value and important medicinal value. The seeds used in the main planting areas of Job's tears in my country are mainly farmers' self-retained seeds, which are single in variety, coupled with natural hybridization, mechanical mixing and adverse environmental effects, etc., and are vulnerable to diseases in production. After long-term planting, the variation and degradation of varieties, the deterioration of quality and high yield, the decline of stress resistance, especially the aggravation of diseases, thus limit the development of Coix industry. Therefore, the purification and rejuvenation of high-quality ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 杨成龙付瑜华王健罗凯周明强蒙秋伊刘凡值杨小雨敖茂宏李志芳黎青班秀文周祥
Owner SUBTROPICAL CROPS INST OF GUIZHOU PROVINCE
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