摘要
烟草叶片可以迅速吸收外源￣３Ｈ－腐胺（Ｐｕｔ），其吸收速率与浓度呈正比；光照能促进Ｐｕｔ的吸收；烟株上部叶吸收Ｐｕｔ能力较中、下部叶大；给烟株任一部位叶片饲喂￣３Ｈ－Ｐｕｔ，６ｈ后其可传递至烟株各部位叶，４８ｈ后以上部叶积累￣３Ｈ－Ｐｕｔ量为最高。Ｐｕｔ在植株叶片间运转可通过木质部与韧皮部２种途径。
The rapid uptake and fast transportation of ￣3H-putrescine(￣3H-Put)in tobaccoplants were proved in the present studies. The uptake occurred in a short time efter ￣3H-Putapplication to the discs and changed with different ￣3H-Put concentrations,leaf positionsand light-dark condition ￣3H-Put could transport upwards or downwards in tobacco plantsbut mainly upwards. The transportation occurred in pholem and xylem simultanously.Theupward transportation was mainly through xylem while the downward transportationthrough phloem.
出处
《河南农业大学学报》
CAS
CSCD
1995年第2期108-110,115,共4页
Journal of Henan Agricultural University
关键词
烟草
叶片
植株
多胺
吸收
运转
tobacco
plant
￣3H-Putrescine(￣3H-Put)
uptake
transportation
