作　　者： ; ;

机构地区： 华南师范大学

出　　处： 《热带亚热带植物学报》 1993年第2期73-77,共5页

摘　　要： 花生叶圆片对^3H-BA的吸收方式，以被动吸收为主，也有主动吸收，叶圆片在^3H-BA溶液中温育2h，吸收BA最多，以后则下降。PH7．5的介质最适合^3H-BA的吸收。在16-26℃范围内，吸收BA随温度的上升而增加。^3H-BA进入花生幼苗体内后，移动性小。标记^3H-BA 6d后，滞留率仍达97．3%。 The uptake of 3H-BA by leaf discs of peanut existed in two forms, active and passive forms, and the latter was about 60. 7% of total amount absorbed. When leaf discs were incubated with 3H-BA, the maximum amount of this chemical taken in was found after 2 hours and then decreased. A pH optimum at 7. 5 could benefit the 3H-BA uptake by leaf discs. At the range of 16- 26℃, the amount of BA absorbed by leaf discs was increased with temperature. When the leaves of decapitated-derooted peanut plants were smeared with 3H-BA,97. 3% of this chemical still remained in labelled leaves after 6 days. It seems that the mobility of BA in peanut plant is low.

关 键 词： 花生叶 吸收方式 幼苗 叶片 分布 温度 体内 标记 增加

领　　域： [生物学] [农业科学] [农业科学]