Thiol composition of xylem sap of beech trees
β Scribed by R. Schupp; V. Glavac; H. Rennenberg
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 378 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0031-9422
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π SIMILAR VOLUMES
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.
Concentrations of total calcium, ionic calcium, citric and malic acids have been measured in xylem sap extracted from apple shoots. Ionic calcium, as measured by an ion selective electrode, was about 50 per cent of the total calcium. The remainder of the soluble calcium was present as complexes with