Measurement method and evaluation method for fruit base length of citrus fruit and application of measurement method and evaluation method

The invention belongs to the technical field of citrus fruit character research, and particularly relates to a citrus fruit base length measuring method, an evaluation method and application thereof. The method for measuring the fruit base length of the citrus fruit comprises the following steps: measuring a fruit base length measurement value and a peel thickness measurement value of the citrus fruit; and obtaining the fruit base length of the citrus fruit according to the fruit base length measurement value, the fruit peel thickness measurement value and a predetermined relational expression that the fruit length is equal to the fruit base length measurement value/the fruit peel thickness measurement value. According to the method, the ratio of the measured value of the fruit base length to the measured value of the peel thickness is quantified into the fruit base length of the citrus fruit, phenotypic characters of the fruit base length of the citrus fruit including the pomelo fruit can be reflected and ev