丹参种子航天搭载的生物学效应

为探讨丹参种子航天搭载的生物学效应,利用"实践八号"育种卫星搭载丹参种子,返回地面后进行田问种植观测,分别从生育时期、种子活力、地上部形态特征、根部性状、结实性状分析丹参航天诱变的生物学效应,利用SRAP标记技术分析了材料在DNA水平上的变化.结果表明:航天搭栽造成了DNA水平上的变异;提高了种子的发芽率和出苗率,促进了幼苗的发育,开花期提前;促进了花苔长度和花蕾数的增加,抑制了叶片生长.总体上促进了根部性状和种子性状的变异,除冠幅、花轴长度外,增大了各性状的变异系数.丹参种子航天诱变的生物学效应可为丹参种质改良和品种选育提供参考.

BIOLOGICAL EFFECTS OF SPACE LOADING ON Salvia miltiorrhiza

To study the SP_1 biological effects of space loading on Salvia miltiorrhiza seeds.Dry seeds were carried by breeding satellite-Shijian 8,and seeds were sowed in the field after returning the ground.Some parameters were measured,such as growth stage,seed vigor,plant traits above ground,root feature and seeding characteristics.Variation of DNA wag tested by SRAP.The results showed that DNA variation happened,the rate of germination and emergence in SP_1 generation increased significantly,the blooming date Was advanced,rachis length and flower number of SP_1 generation also increased compared with CK. At the same time,the root features and seeding characteristics were improved, the CV Was increased in the relative traits,but leaf growth Was inhibited significantly.The biological effects of space loading on dry seed of Salvia miltiorrhiza might be an important index for germplasm improvement and breeding.