Method for identifying cold-resistant ability of balsam pears at seedling stage

Abstract

The invention belongs to the technical field of plant cultivation and seed breeding, and provides a method for identifying the cold-resistant ability of balsam pears at a seedling stage. By adopting the method, the work of evaluating, identifying and screening seed breeding intermediate materials of the cold-resistant balsam pears has higher operability, errors caused by differences in individual subjectivity and experience are reduced, and the objectivity and the efficiency of cold-resistant seed breeding of the balsam pears are improved; admittance conditions and standards of cold-resistant autumn-winter and early spring protected cultivation varieties of the balsam pears, which takes the cold resistance as the basic measurement, are established according to the level of cold resistance indexes of the varieties of the balsam pears, so that whether the varieties of the balsam pears can be used as the autumn-winter and early spring protected cultivation varieties can be defined, the cold resistance of the seed breeding materials can be accurately grasped and evaluated during special seed breeding for low-temperature-resistant protected cultivation of the balsam pears, scientific bases are provided for the use of the materials, the varieties suitable for autumn-winter and early spring protected cultivation are identified and screened, the varieties with poor cold resistance are eliminated, the development and the research of the breeding work of special varieties for the low-temperature-resistant cultivation of the balsam pears are promoted, and the process of the breeding work of the balsam pears is quickened.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation and breeding, and in particular relates to a method for identifying cold tolerance of bitter gourd seedlings. Background technique [0002] Bitter gourd originates from tropical and subtropical regions, and it likes high temperature, and its growth and development are stunted under low temperature conditions, which limits the planting range and market season of bitter gourd. Current balsam pear varieties cannot meet the demand of the market in terms of cold tolerance, especially under the conditions of solar greenhouses in North China, Northeast and Northwest my country, there is an urgent need for varieties with strong cold tolerance. Identification and screening of cold-tolerant materials is the key to breeding cold-tolerant varieties. [0003] However, according to the existing reports, most of the studies on cold tolerance identification are cucumber, tomato and pepper, and there ar...

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Problems solved by technology

[0004] The invention provides a method for identifying the cold tolerance of bitter gourd seedlings, aiming to solve the problem that current bitter gourd varieties cannot meet the market demand

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