【摘要】 以马铃薯品种米拉脱毒试管苗为材料,采用6个不同的光周期处理进行试管薯诱导,以研究光周期对马铃薯试管薯的诱导效应。研究结果表明:不同暗期处理对试管薯结薯个数影响不显著,以8h和12h/d暗处理产量较高;叶绿素含量和块茎淀粉含量与暗期长短均呈负相关,α-淀粉酶活性与暗期长短均呈正相关;叶绿素含量、块茎淀粉含量与经济产量成显著的正相关。同时随着暗处理时数的延长,薯形和薯皮色均发生了显著的变化。更多还原

【Abstract】 The experiment was conducted in a design with 6 treatments and 3 replicates,using the potato cultivar Mira（Solanum tuberosum L.）as plant material to investigate the photoperiod influencing potato microtuberization.The findings indicted that different period of darkness did not have an effect on the tuberization number,but could have significantly resulted in different weight of microtubers by influencing photosynthesis and bio-substance distribution.The two treatments,8h·d^-1 and 12 h·d^-1 darkness,had higher yield.There was a negative correlation of the length of darkness with chlorophyll content and microtuber starch content.There was a positive correlation of the amylase activity with darkness length,and a significantly positive correlation of economic yield with chlorophyll content and microtuber starch content.As darkness period was increased,the microtuber shape and skin color changed,varying from long,oval to round and from green,light green to white respectively.更多还原