Breeding method for convergent improvement of carotene and dry rate characters of sweet potato

A technology of carotene and drying rate, applied in botany equipment and methods, plant genetic improvement, application, etc., can solve problems affecting the eating quality of high-carotene varieties, affecting nutritional value and color, etc., to achieve improved dry rate and carrot properties, promote product quality, and speed up the effect
CN103109738BActive Publication Date: 2014-03-26ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
Publication Date
2014-03-26

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Abstract

The invention discloses a breeding method for convergent improvement of carotene and dry rate characters of sweet potato, belonging to the technical of breeding of varieties of crops. The breeding method comprises the steps of: screening breeding parents; determining a male parent and a female parent and designing incomplete diallel cross; screening an optimal parental combination; and screening a breeding target variety. The breeding method is short in breeding period and high in speed; and the content of the carotene is increased, the dry rate characters are improved, the constant restraint of the breeding of the sweet potato by the remarkable negative correlation characteristic of the content of the carotene and the dry rate is broken through, the content of the carotene reaches 8-10mg / 100g, the dry rate reaches 28-30 percent or the dry rate reaches 32-36 percent and the content of the carotene reaches 1-5mg / 100g, and thus the improvement of the quality of the sweet potato is effectively promoted. The breeding method can be popularized and applied to the breeding of the sweet potato.
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Description

technical field

[0001] The invention relates to the technical field of crop breeding, in particular to a method for polymerizing and improving sweet potato carotene and dry rate traits. Background technique

[0002] Carotene is an important nutritional quality index of sweet potato. As the precursor of vitamin A, carotene has been fully confirmed in its physiological activity and has been used in night blindness, anti-photosensitivity, and some skin diseases and anti-cancer treatments. Plant-derived carotene is internationally recognized. It is used as a simple and easy-to-use bioaugmentation program for nutritional intervention of children in underdeveloped areas.

[0003] Carotene is bright orange-red to orange-yellow. Generally, red sweet potatoes are rich in carotene, followed by yellow sweet potatoes, and white-fleshed sweet potatoes contain almost no carotene. The carotene content in all kinds of sweet potatoes ranges from 0 to 20mg / 100g fresh weight. In ...

Claims

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