Abstract:

This experiment study on the germination stage of rice seeds that have been treated with Laser irradiation. Three different varieties of rice seeds were irradiated with different doses (4.8 J/cm2~36 J/cm2) of the He-Ne and Nd: YAG laser. The germination rate and germination energy of M1 generation were detected. Results indicated that the germination energy and germination rate increased with radiation dose to a degree, then decreased. The optimal dose of He-Ne laser of each kind of seed was 12 J/cm2, 14.4 J/cm2 and 21.6 J/cm2. The optimal dose of Nd:YAG laser was 14.4 J/cm2 and 21.6 J/cm2. Experimental results showed that the appropriate dose of laser can improve germination energy and germination rate. The sensitivity of the laser is different between different kinds of seed. It indicates that it may be feasible for bringing about good biological effect for seed irradiated by laser. It would provide theoretical and experimental basis for breeding irradiated by laser.