#$%^&*AU2020100624A420200604.pdf#####ABSTRACT The invention discloses a method for screening cold-resistant cotton varieties and application thereof. The method comprises the following steps of (1) seeding cotton seeds of different varieties； after the seeding for two days, realizing young seedling emergence； removing young seedlings with nonuniform growth conditions in the fourth day； maintaining the continuous growth of other young seedlings； (2) realizing flat spreading of cotyledons after the young seedlings grow to the seventh day； performing cold adaptation on the young seedlings； then, performing cold treatment； next, performing hot adaptation and restoration treatment； counting the survival rate and counting the cotyledon cold damage level； next, calculating the form index； testing the relative electrical conductivity of detached leaves when the cold treatment is performed for 72 hours； and evaluating the cold resistance according to the form index or the relative electrical conductivity. 1DRAWINGS FIG. 1 FIG. 2 1
