The invention discloses a breeding method for somaclonal variation of
caladium bicolor, and belongs to the technical field of genetic breeding of flowers. The method comprises the steps that a
tissue culture rapid propagation
system of a parent is built in a
callus induction way; variant plants with special characters are screened out of
offspring groups and numbered, the content of relative
nuclear DNA of the variant plants is detected, and when the
peak value position of the variant plants is 1.6 to 2.2 times that of the parent, the corresponding plants are determined as preferable plants of the
caladium bicolor; a clonal
offspring group of the preferable plants is built, multi-year multi-point
experimental research is carried out on the main characters of the
offspring group, the specificity, consistency and stability of the preferable
plant offspring group are verified, and finally the preferable plants are determined as a new variety of the
caladium bicolor. According to the method, good variant plants of the caladium bicolor can be effectively obtained, the variant plants can be stabilized fast, an operating method is simple and convenient, the breeding cycle is shortened, and breeding efficiency is improved.