Soft-foot red-stalk dendrobium candidum breeding and line breeding method

The invention discloses a soft-foot red-stalk dendrobium candidum breeding and line breeding method. The method comprises the following steps: carefully selecting male parent and female parent plants with obvious soft-foot red-stalk dendrobium candidum varietal characteristics, protecting and cultivating until flowers bloom, and then carrying out homologous heterologous strain artificial pollination; picking good ripe fruit pods born on dendrobium candidum after the artificial pollination, and then carrying out tissue culture sterile breeding on the dendrobium candidum; cultivating soft-foot red-stalk dendrobium candidum seedling plants by virtue of a directional system; and then carrying out line culture for purifying varieties. The method disclosed by the invention has the advantages that the soft-foot red-stalk dendrobium candidum variety with high survival rate, strong stress resistance, high yield, high polysaccharide content, good colloid and stable genetic inheritance can be successfully bred, and the