Turnip heat tolerance character screening process

A technology for heat-resistant traits and screening methods, applied in the directions of botanical equipment and methods, applications, and plant phenotype improvement, can solve problems such as loss of excellent germplasm, and achieve the effects of shortening breeding years, being easy to master, and improving effectiveness

Inactive Publication Date: 2003-08-20
SHANGHAI JIAO TONG UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] The traditional heat resistance screening mainly uses the natural high temperature in summer, so the identification results reflect the comprehensive adaptability of the material to the entire environment, and it is easy to use some excellent germplasm with high heat resistance but not suitable for other environmental factors of the local season. lost

Method used

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Examples

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Embodiment Construction

[0019] The technical solution of the present invention will be further described below through specific examples.

[0020] The tested varieties are: Xiaqiu radishes: Shangnong 936, Shangxuan No. 4, Duanye 13, Zhongqiuhong and Liushiri; autumn and winter radishes: Chuanxinhong and Shaoxindianhong; spring radishes: Baiyuchun.

[0021] ①Determination of high temperature half-lethal time

[0022] The seeds of the above 8 parts of materials were sterilized with saturated bleaching powder solution for 15-20 minutes, and sowed in a seedling tray equipped with a substrate (the composition of the substrate: 60% peat+20% perlite+20% vermiculite), and the seedlings were grown The trays were placed in a growth chamber with a temperature controlled at 25°C / 18°C (day / night), during which nutrient solutions (1 / 10 MS macroelements and trace elements) were supplemented 4 times a week.

[0023] Take 30-day-old leaves, use a hole puncher with a hole diameter of 0.5cm to punch small discs, rinse...

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Abstract

The turnip heat tolerance character screening process incldues measuring the semilethal time of 30-day seedling at 45 deg.c high temperature condition to determine the direct high temperature tolerant capacity for different material cells and the restoring growth experiment to determine the growth restoring case after relieving high temperature. The said process can judge the heat tolerance characteristics of different turnip materials simple and fast, and is favorable to shorten breeding period for breeding excellent varieties. It can raise new variety identifying speed when used in introducing, raise effectiveness of screening heat tolerant turnip variant when used in breeding, and avoid the loss of excellent germ plasm during screening.

Description

Technical field: [0001] The invention relates to a screening method for heat-resistant traits of radishes, which is used for cultivating special cultivars of vegetables such as radishes in summer and summer and autumn, and belongs to the technical field of crop breeding. technical background: [0002] Radish (Raphanus sativus L.) is one of the main vegetables widely cultivated in Southeast Asia. It is not only rich in nutrition, but also has high medicinal value. [0003] In the middle and lower reaches of the Yangtze River, due to the high temperature in summer, heavy rain, and the impact of pests and diseases, the vegetable market in August and September has a lot of room for improvement in terms of variety, quantity and quality. Although my country is rich in radish varieties, there are few varieties that are resistant to high temperature, heavy rain, and pests. In addition, people's consumption habits in different regions are not the same, and there are fewer heat-resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H3/00
Inventor 陈火英张建华朱丽萍
Owner SHANGHAI JIAO TONG UNIV
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