3H-BA在花生叶片的吸收和分布

UPTAKE AND DISTRIBUTION OF 3H-BA IN PEANUT LEAVES

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％。

Abstract:

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 smear...