为给梨砧木种子处理提供技术依据 ,对贵州野生梨砧木种类的种子进行了解除休眠的低温需求试验。结果表明 ,在 3℃的低温条件下 ,川梨 (PyruspashiaD ,Don .)、豆梨 (PyruscalleryanaDcne.)、滇梨 (PyruspseudopashiaYu .)和砂梨 (PyruspyrifoliaNakai)的种子解除休眠需要的低温时数分别为 72 0h、96 0h、10 80h、132 0h以上。不同地区野生状况下的川梨植株 ,种子解除休眠需要的低温时数有一定差异 In order to provide the technical basis for the seed treatment of pear stockstocks, the seeds of Guizhou wild pear stockstocks were tested for their hypothermic needs. The results showed that under the low temperature of 3 ℃, the temperatures required for the dormancy of seeds of Pyrus pashia D, Don., Pyrus cory palliaDcne., Pyruspseudopashia Yu and Pyrus pyrifolia Nakai were 72 0h, 96 0h, 10 80h, 132 0h or more. In different regions of Sichuan wild pear plants, seeds need to release a few differences in low-temperature hibernation