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Method for culturing excellet stevia rebaudiana seeds by systematically breeding stevia rebaudiana parents

A systematic breeding and stevia technology, applied in botany equipment and methods, plant gene improvement, application, etc., can solve the problem of not meeting the requirements of growers and processing enterprises, unstable quality of sexual male parents, and unsatisfactory hybrid seeds and other problems, to achieve the effect of good quality, strong resistance, and upright branches

Inactive Publication Date: 2011-01-05
凤阳县小岗村润农甜叶菊高科有限公司
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Problems solved by technology

However, due to the unstable quality of the sexual male parent and the unoptimized asexual female parent in this method, the hybrid seeds produced are not ideal and cannot meet the requirements of growers and processing companies, nor can they meet the needs of food, beverages, medicine, cosmetics, etc. industry requirements
The Chinese patent CN1985575A disclosed on June 27, 2007 discloses a method for systematic breeding of Stevia clone parental parents to cultivate hybrid new varieties, but the seeds cultivated by this method only go through one group hybridization, and the mixed harvest F 1 Generation of hybrids, but this method still has the shortcoming of unstable traits

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  • Method for culturing excellet stevia rebaudiana seeds by systematically breeding stevia rebaudiana parents
  • Method for culturing excellet stevia rebaudiana seeds by systematically breeding stevia rebaudiana parents
  • Method for culturing excellet stevia rebaudiana seeds by systematically breeding stevia rebaudiana parents

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Embodiment Construction

[0022] The following describes the specific implementation of the present invention through the description of the process of the present invention.

[0023] 1. Variety selection in the asexual stage

[0024] Stevia is a self-sterile cross-pollination crop, so the genetic composition of the Stevia population is always heterozygous, and the heritability of sexual offspring is not easy to stabilize, and both beneficial and harmful variations are retained, allowing us to select good singles. Strains bring challenges and possibilities. We observe and monitor stevia in different growth stages from various foreign and domestic planting areas, according to the characteristics, characteristics, growth period, flowering period, resistance and adaptability of individual plants, and select stevia with high leaf yield and leaf content. Four high-quality individual plants with high glucoside content and strong resistance (numbered 01, 02, 03, and 04) were isolated and managed. times dete...

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Abstract

The invention discloses a method for culturing excellet stevia rebaudiana seeds by systematically breeding stevia rebaudiana parents, which comprises the following steps of: selecting varieties at an asexual stage, preparing seeds of generation F1 by cross breeding at a sexual stage, and preparing seeds of generation F2 by using a backcross method. The method of the invention has the advantages of high leaf yield, high total glycoside content, high Rebaudioside-A (RA) glycoside content, high resistance and stable properties.

Description

technical field [0001] The invention relates to a method for cultivating fine varieties of Stevia rebaudiana, in particular to a method for systematically breeding stevia rebaudiana parents and cultivating fine stevia rebaudiana seeds. Background technique [0002] At present, there are more than 20 kinds of sweeteners used in the world, which can be divided into two categories: natural and synthetic according to their sources. Natural products include sucrose, fructose, honey, etc., all of which contain extremely high calories, which can easily lead to elevated blood sugar and dental caries. Diabetics, cardiovascular patients, and obese patients should not eat them. Chemical synthesis products include aspartame, sweetener, saccharin, etc. These products are harmful to the human body. As a pure natural sweetener, stevioside has a sweetness 200-400 times that of sucrose, and its calories are only 1 / 300 of sucrose. It has a pure taste and is safe to eat. It is used in food, b...

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Application Information

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IPC IPC(8): A01H1/02
Inventor 徐兴光
Owner 凤阳县小岗村润农甜叶菊高科有限公司
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