Volume content

Grigor T. Zehirov, George I. Georgiev - Effect of transient short-term boron deprivation on the growth, nodulation and N2-fixation of soybean plants.

Ljudmila Simova-Stoilova, Zlatimira Stoyanova, Klimentina Demirevska-Kepova -. Ontogenic changes in leaf pigments, total soluble protein and Rubisco in two barley varieties in relation to yield.

Antoaneta Arsova, Toshko Raychev - Effect of organo-mineral treatment on productivity of alfalfa grown on copper and zinc polluted soils.

Yordanka Angelova, Snejana Petkova, Ekaterina Zozikova, Emilia Kotseva, Lubomir Iliev - Effect of kinetin and 4PU-30 on the growth and the content of polyphenols in tobacco callus tissue.

G. Martinez Pastur, D. Zappacosta, M. Arena, N. Curvetto - Changes in isoperoxidase patterns during the in vitro rooting of Nothofagus antarctica.

Petranka Yonova, Elena Guleva, Ekaterina Zozikova, Emilia Kotseva - Senescence dependent changes in some metabolic processes affected by 1,1'-polymethylenebis (3-arylsubstituted) ureas in barley (Hordeum vulgare L.) leaf segments.

Prabhjot Kaur Gill, Arun Dev Sharma, Prabhjeet Singh, Sukdev Singh Bhullar - Effect of various abiotic stresses on the growth, soluble sugars and water relations of sorghum seedlings grown in light and darkness.

Petar Lambrev, Vassilij Goltsev - pH dependence of the effects of diuron, atrazine and dinoseb on the luminescent properties of thylakoid membranes.

Review
Mariela Odjakova and Christina Hadjiivanova - The complexity of pathogen defense in plants.