Abscisic-acid content of xylem sap
β Scribed by R. M. Davison; H. Young
- Publisher
- Springer-Verlag
- Year
- 1973
- Tongue
- English
- Weight
- 199 KB
- Volume
- 109
- Category
- Article
- ISSN
- 0032-0935
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β¦ Synopsis
Abscisie acid (ABA) has been identified by gas chromatography in xylem sap of the woody species apple, peach, willow, sugar maple, Tecon~aria capensis and Actinidia chinensis. The amounts of ABA present in each species are markedly different, varying from 9 to over 1000 ng/100 ml of sap.
π SIMILAR VOLUMES
Addition of an osmoticum (-12 bars) to the rooting medium of sunflowers (Helianthus annuus L.) caused an increase in the level of abscisic acid (ABA) present in xylem exudate subsequently collected from cut shoots. Using tall and dwarf plants it was shown that there was a time lag in the appearance
It is shown that there is one growth inhibitor in the phloem sap and two in the xylem sap of willow (S. viminalis L.). The concentration of the inhibitor in the phloem sap, (+)-abscisie acid, increases as the plants enter dormancy. This is Mso shown for (+)-abscisic acid in the xylem sap, hut the co