1. Peroxidase assay in plants: Interference by ascorbic acid and endogenous inhibitors in Sedum and Pelargonium enzyme extracts

   • Federico J. Castillo
   • Fredi Celardin
   • Hubert Greppin

   OriginalPaper Pages: 69 - 75

2. Studies on Cuscuta reflexa ROXB. V. The level of endogenous hormones in the parasite, Cuscuta reflexa, and its host, Vicia faba L., and a suggested role in the transfer of nutrients from host to parasite

   • B. Ihl
   • F. Jacob
   • G. Sembdner

   OriginalPaper Pages: 77 - 90

3. Fluctuation of free IAA under inductive and non-inductive photoperiods in Chenopodium rubrum

   • L. Pavlová
   • J. Krekule

   OriginalPaper Pages: 91 - 98

4. The modifying effect of gibberellic acid and kinetin on the growth abnormalities induced by 2,4-D in marrow seedlings and the possible involvement of endogenous ethylene

   • Neville J. Pinfield
   • Jesus O. Sanchez-Torres
   • Christopher N. McDermott

   OriginalPaper Pages: 99 - 109

5. Content of endogenous cytokinins in intact and transversally cut leaf blades of Bryophyllum crenatum

   • Karel Slabý
   • Jiří Šebánek

   OriginalPaper Pages: 111 - 116

6. Changes in endogenous hormones in apple during bud burst induced by defoliation

   • J. S. Taylor
   • R. P. Pharis
   • G. R. Edwards

   OriginalPaper Pages: 117 - 134

7. Changes in endogenous cytokinins of celery (Apium graveolens L.) seeds following an osmotic priming or growth regulator soak treatment

   • Tudor H. Thomas

   OriginalPaper Pages: 135 - 141

8. Inhibition of oxidative catabolism and oxy free radical production as a possible mode of cytokinin control of foliar senescence

   • J. Wurzburger
   • A. A. Frimer
   • Y. Y. Leshem

   Short Communication Pages: 143 - 146