Abstract:

In order to shorten seed germination time, enhance seed germination rate, study the influence coming from endocarp, seed coat, thiourea and different concentrations of gibberellins on seed germination, the author chose the Cyclobalanopsis gilva (Bl.) Oerst seed for the materials, determined the seed quality index, mastered the basic characteristics. The results showed that: (1) the Cyclobalanopsis gilva (Bl.) Oerst seed was cylindrical and seed was smooth. The color of seed was brown. The whole seed structure removed coat was a total embryo without endosperm structure, the average length of seed was (1.82±0.35) cm, and its width was (1.35±0.08) cm, average hilum length was (0.76±0.36) cm, average cupule length was (1.61±0.18) cm, average cupule inside was (1.60±0.09) cm, average cupule height was (0.698±0.102) cm. Hundred-grain was (150.1±40.95) g. The seed moisture content was around 40%. In its nature habitation, the seed germination percentage was 44.2%, germination time was 68d. (2) Subtract endocarp, germination time significantly reduced, and germination rate significantly increased. The author removed the endocarp and seed coat, seed germination time was the shortest and germination rate reached 66.5%. By 4% thiourea treatment, also shorten germination time, germination rate was 56.5%. By 200 mg/kg, 600 mg/kg GA3 two treatment in different degrees separately, germination rate was 34.0%, 45.8%, achieving the better effect on 600 mg/kg treatment.