STUDY ON GERMINATION AND THE CONTENT OF PROLINE, SOLUBLE SUGAR, STARCH, FAT AND SOLUBLE PROTEIN OF IDESIA POLYCARPA MAXIM. SEED AT LOW TEMPERATURE

The seed germination rate of Idesia polycarpa Maxim. is low in nature. This study analyzed the germination rate after four temperature treatments and the changes of inclusions during different days treatments at 5 degrees C. The seeds were placed at 5 degrees C, 10 degrees C, 12 degrees C and 15 degrees C respectively, then the seeds were put at 15/25 degrees C to germinate and the changes of inclusions were determined during the process of 5 degrees C treatments. The results showed that the four temperatures had obvious effect on dormancy release, especially the 5 degrees C. During the process of 5 degrees C treatments, the content of proline and soluble sugar increased, and the content of starch, fat and soluble protein gradually decreased, and insoluble substances were converted to soluble substances. The germination and dormancy release of I. polycarpa Maxim. seeds are closely related to the changes of the inclusions. The study may provide a reference for the germination and dormancy of I. polycarpa Maxim. seeds, and also provide useful information for theory basis and feasible methods to raise seedlings, breed and promote planting area.