Under low temperature stress,the root activity,chlorophyll content,proline content and membrane protective enzyme activity of leaves of isopentenyl transferase(ipt) transgenic rice lines T7,T19 and their control(EY105) were measured.

• 测定了转异戊烯基转移酶(ipt)基因水稻EY105的株系T7、T19及对照在低温胁迫下幼苗叶片叶绿素含量、脯氨酸含量及膜保护酶活性。