CPB Performance Dec 2021, line identifiers replaced with A/B

CPB larval performance data for December experiment, plant line identifiers changed to 'A-B' instead of 'E-D'. Used in 'Larval_performance_Sept2021.R' code本数据集为12月实验中针对CPB（科罗拉多马铃薯甲虫，Colorado Potato Beetle）的幼虫表现数据，其中植物品系标识符已由'E-D'修改为'A-B'，该数据已被应用于'Larval_performance_Sept2021.R'代码文件中。