Identification method for early bolting resistance of winter spring radishes of greenhouse cultivation

Abstract

The invention discloses an identification method for early bolting resistance of winter spring radishes of greenhouse cultivation, and belongs to the technical field of breeding and seed selection of plants. The identification method for early bolting resistance of the winter spring radishes of greenhouse cultivation is provided by selecting five radish varieties which are selected from conventional or determinate varieties of various regions or commercially-available commodity varieties, and have obvious gradient difference in early bolting resistance to serve as standard varieties. Interior leaf wax powder showing, interior leaf normal or slimness, flower bud showing and scape or shoot length, flowering, the degree of edible maturation stage of root weight are used for serving as morphological indexes of the identification method for early bolting resistance of the winter spring radishes of greenhouse cultivation, and the identification method for early bolting resistance of the winter spring radishes of greenhouse cultivation which comprises six grades of early bolting resistance research grading standards and five early bolting resistance evaluation grades is formed. The identification method for early bolting resistance of the winter spring radishes of greenhouse cultivation can be used for carrying out quantitative evaluation on early bolting resistance of varieties used in current production to identify strength of early bolting resistance of the varieties, can provide bases for reasonable utilization and scientific planting, can further provide technical support for breeding of the winter spring radishes, and can speed up the course of breeding of the winter spring radishes.

Description

technical field [0001] The method for identifying early bolting resistance of winter and spring radishes cultivated in greenhouses according to the invention belongs to the technical field of plant breeding and selection, and is specially used in the middle and lower reaches of the Yangtze River in greenhouses+plastic films, medium greenhouses+plastic films, small greenhouses+plastic films, greenhouses+medium greenhouses+plastic films, and greenhouses In + small shed + plastic film, medium shed + small shed + plastic film cultivation, screen, identify and evaluate the early bolting resistance of winter and spring radish varieties or materials, and provide a basis for production and scientific research. technical background [0002] In the past ten years, winter and spring radishes have been mainly cultivated in the series of varieties such as "Baiyuchun" bred by Beijing Shinong Seedling Co., Ltd. (Korea). The spring and summer supplies are on the market, occupying most of th...

AI Technical Summary

Problems solved by technology

However, the fleshy roots of winter and spring radishes cultivated in greenhouses have the phenomenon of bolting before reaching the edible maturity stage (that is, early bolting). Early bolting leads to a great reduction in the yield and quality of winter and spring radishes, which is a major problem in current production. , and the lack of identification methods and evaluation standards for resistance to early bolting has become a bottleneck restricting the scientific research and development of winter and spring radish

[0004] In 2005, the applicant applied for a Chinese patent titled a method for identifying bolting resistance of spring pakchoi, which effectively solved the problems of identification and evaluation of spring pakchoi's bolting resistance, and promoted the production and scientific research of spring pakchoi. However, although both winter and spring radish and spring pakchoi belong to the cruciferous vegetable crops, they belong to different genera, and not only have relatively large differences in genetics. For example, the chromosome number of radish is 2n=18, and the chromosome number of pakchoi is 2n=20; And there is a big difference in vegetable cultivation classification, radish is a root vegetable with fleshy roots as a product, and spring Chinese cabbage is a leafy vegetable with leaf clusters as a product, and the inventor has repeatedly This test also found that the bolting resistance identification method of spring pakchoi is not suitable for the identification and evaluation of winter and spring radish resistance to early bolting, and the selection of winter and spring radish varieties cannot be effectively guided only by the standard of shortened stem or shoot length. large error