摘要
单胚苗种子经离子(30KV,50次)注入后,发芽率和成苗率与CK相比均降低,根、芽的生长也较CK为慢;但没有^(60)Co—γ射线(照射量40KR)辐照的表现严重。经离子注入的两个品种的干种子的生物超弱发光值均高于CK。双胚苗品系种子经离子注入后,发芽率和根、芽的生长与单胚苗表现趋势一致;虽然其双苗率有所下降,但却增加了独立双苗(2个芽鞘、2个芽、2条根)类型的比率。
Dry rice seeds of single and twin seedlings were treated by ion implantation. These seeds have differences as compared with control seeds in cespect to the physilogie effects. The germination percentage and the surviral seedling rate were lower than the check, but higher than those for γ-roy treated seeds. Ultraweak bioluminescence value of dry seeds treated by ion implantation was higher than that of the check, lower than that of seeds treated by γ-ray. The results also show that seeds treated by ion implantation possess a lower percentage of twin seedling than the comparisons do. It is worthy mentioning that there are more twin seedlings possessed independent two-mesocotyls which is a very meanful apomictie material in rice selecting.
基金
国家自然科学基金
关键词
离子注入
水稻
单胚苗
双胚苗
Ion implantation
Rice
Single seedling
Twin seedling
