激光辐射对水稻表型变异的影响

本试验利用3种不同的激光器(He-Ne激光器、半导体泵浦全固体激光器、Nd3+YAG固体脉冲激光器)、不同的处理时间(5、10、15、20 min),对两个不同的水稻品种吉粳88和吉农大18催芽种子进行了处理。结果表明:在水稻品种吉粳88的11个激光处理材料中,利用半导体泵浦全固体激光器处理20 min的处理组其表型变异最明显,抽穗期比未经激光处理的对照晚了6 d,株高也比对照矮7.5 cm左右。利用Nd3+YAG固体脉冲激光器处理20次的处理组的抽穗期也比未经处理的对照晚了6 d;同样在水稻品种农大18的11个激光处理材料中,利用Nd3+YAG固体脉冲激光器处理20次的处理组其抽穗期发生了明显的变异,比对照晚了5d。利用He-Ne激光器处理了20 min的处理组抽穗期比对照晚了4 d,处理5 min和10 min的处理组虽然有变化,但不明显。利用半导体泵浦全固体激光器处理的3组处理组都没有产生明显的变化。

The Influence of Laser Radiation on Phenotypic Variation of Rice

In this study,germinated seed of rice varieties‘Jinongda 18’and‘Jinongda 18’have been treated with three different lasers(He-Ne laser,diode-pumped all solid-state lasers,Nd3+ YAG solid-pulse laser) and different treatment time(5 minutes,10 minutes,15 minutes,20 minutes).The results showed that of the 11 materials of the rice variety‘Jinongda 18’,phenotypic variation of which treated by the diode-pumped all solid-state lasers for 20 minutes was the most.Heading was 6 days later than the control and plant height was decreased by 7.5 cm.Heading was 6 days later when treated with Nd3+ YAG pulsed laser for 20 times.Also in the 11 materials of rice varieties‘Jinongda 18’,heading was 5 days later than CK when Nd3+ YAG solid-pulsed laser treatment was used for 20 times.Heading of 20-minutes treatment was 4 days later than CK when He-Ne laser treatment was used.There were some changes in 5-minute and 10-minute treatment groups,but it was not obvious when He-Ne laser treatment was used.Three treatments did not produce significant changes when diode-pumped all solid-state laser treatment was used.