Protein complex and esterase isoenzyme patterns ofAllium sativum L. cultivars and clones-regenerants

Stanislava Chomátová, Věra Turková, Eva Klozová

Biologia plantarum 32:321, 1990 | DOI: 10.1007/BF02898491

Protein complex patterns of cloves and esterase isoenzyme patterns of apical buds of cloves were studied with Czechoslovak virus-free cultivars ofAllium sativum L. and the wild speciesA. longicuspis Regel, Similarly, four clones-regenerants obtained using explant culture techniques from A.sativum L. cv. Bzenecký paličák (two somaclones and two clones derived from plants regenerated from meristem cultures treatedin vitro with colchicine) differing in their ploidy, morphology, and yields were studied. Immunophoreograms of protein complexes of theA. sativum L. cultivars under investigation differed from one another in...

Book review

V. Žárský

Biologia plantarum 32:331, 1990 | DOI: 10.1007/BF02898492

Micropropagation of hornbeam (Carpinus betulus L.) and ash (Fraxinus excelsior L.)

V Chalupa

Biologia plantarum 32:332-338, 1990 | DOI: 10.1007/BF02898493

Shoot multiplication of hornbeam was stimulated onWPM, QL andDKW medium supplemented with a low concentration of BAP or BPA (0.1-0.2 mg I -1) andIBA (0.1 mg I -1). Low concentration of thidiazuron promoted axillary bud formation, higher concentration inhibited shoot elongation. Microshoots were rooted onWPM supplemented with a low auxin concentration (IBA or NAA 0.2-0.5 mg I -1). High rooting percentages were obtained. Shoot proliferation of ash was stimulated on MS andDKW medium supplemented withBAP orBPA (2.0-5.0 mg I -1) andIBA (0.1 mg I -1). Root formation was promoted onWPM containing...

Book review

T. Gichner

Biologia plantarum 32:338, 1990 | DOI: 10.1007/BF02898494

Changes in free IAA level in the leaves of short-and long-day tobacco during flowering and the effect of applied IAA on the transition to flowering

Veronika N. Lozhnikova, Ivana Macháčková, J. Eder, Natalja Dudko, J. Krekule, M. Kh. Chailakhyan

Biologia plantarum 32:339-345, 1990 | DOI: 10.1007/BF02898495

Changes in free IAA level were studied in the leaves of the central stem zone of short-day tobacco (Mcotianatabacum, cv. Maryland Mammoth) and long-day tobacco(Nicotiana silvestris) in inductive photoperiodic regime after 10, 20, 30 and 40 d, respectively. The leaves of SD tobacco Mammoth showed a high free IAA level in vegetative plants kept under long days but it significantly decreased (by ca. 50 %) after 10, 30 and 40 short days, respectively. After 20 short days the IAA level was as high as in the leaves of plants at the beginning of inductive treatment. The changes of freeIAA level in the leaves of LD tobacco N.silvestris...

Book review

Ingrid Tichá

Biologia plantarum 32:345, 1990 | DOI: 10.1007/BF02898496

Content of auxin-inhibitor-and gibberellin-like substances in humic acids

E. Casenave de Sanfilippo, J. A. Argüello, G. Abdala, G. A. Orioli

Biologia plantarum 32:346, 1990 | DOI: 10.1007/BF02898497

The content of auxin-, inhibitors-and gibberellin-like substances in freeze-dried humic acids was studied. The results indicate the existence of growth-promoting substances in humic acids, possibly corresponding to IAA or its precursors. Inhibitory activity is more marked during germination than during the growth process. The inhibitory effect caused by high concentration of humic acids could be due to an auxin-like action rather than an input per se of growth inhibitors. A significant amount of both free and conjugated gibberellin-like substances were observed.

The release of primordia of marginal buds onbryophyllum crenatum leaves from growth inhibition in relationship to the level of endogenous IAA

K. Slabý, J. Šebánek, V. Psota

Biologia plantarum 32:352, 1990 | DOI: 10.1007/BF02898498

The growth of primordia of marginal buds (marginals) which differentiate on leaf margins is correlatively inhibited on intactBryophyllum crenatum plants. Following leaf isolation, the marginals are released from this correlative inhibition, which process is accompanied within 2 to 10 h after leaf isolation with a decrease in the content of endogenous IAA in the leaf blade. This decrease can be enhanced by transversal cutting of the leaf blade into three parts which also results in enhanced subsequent growth of the marginals. The growth which follows after the release of the marginals from correlative inhibition is accompanied in cut leaf blades...

The water relations of Verna Lemon trees from flowering to the end of rapid fruit growth

M. J. Sánchez-blanco, A. Torrecillas, F. Del Amor, A. Leon

Biologia plantarum 32:357, 1990 | DOI: 10.1007/BF02898499

Lemon plants (Citrus limonum L. cv. Verna) were grown in the field under two different flood irrigation treatments. The dry treatment received four irrigations per year (March, July, September and November) and the wet treatment one monthly. The amounts of water applied per year for dry and wet treatments were 340.0 mm and 1020.0 mm, respectively. The effects of the two treatments on certain aspects of the plant water relations during the period between flowering and the end of rapid fruit growth (critical period) were studied. Soil matric potential (ψm) and leaf water potential (ψi) values in the dry treatment revealed development of...

Book review

V. Bezvoda

Biologia plantarum 32:363, 1990 | DOI: 10.1007/BF02898500

Dielectric properties, free radicals, amino acids, and some elements in maize tissues

J. Michalov, I. Mistrik, V. Kováčik, L. Nagy

Biologia plantarum 32:364, 1990 | DOI: 10.1007/BF02898501

Data on (1) permitivity and dielectric losses, (2) free radical concentrations, and (3) potassium, sodium, magnesium, calcium, nitrogen, and amino acid contents in tissues of nodal roots, internodes, and leaves of maize plant are presented in the paper. The participation of these factors in the transport phenomenon and the degree of their cooperation in the transport process are discussed.

Book review

Ingrid Tichá

Biologia plantarum 32:373, 1990 | DOI: 10.1007/BF02898502

Some ecophysiological features in sun and shade leaves of tall beech trees

Elena Masarovičová, L. Štefančík

Biologia plantarum 32:374, 1990 | DOI: 10.1007/BF02898503

Some ecophysiological features in sun and shade leaves of tall European beech trees (Fagus sylvatica L.) growing in a natural forest stand were investigated. Quantitative leaf characteristics were followed in the field and under controlled conditions.In the sun leaves significantly higher rates of photosynthesis, photorespiration and dark respiration, and also photosynthetic CO₂ fixation capacity, photosynthetic productivity, and saturating, adaptation and compensating irradiances were found. Specific leaf mass, mean leaf area, stomata density and size as well as the chlorophyll content per unit dry mass were also significantly different...

Book review

Bohumila Bezvodová

Biologia plantarum 32:387, 1990 | DOI: 10.1007/BF02898504

Book review

Z. Šesták, T. Gichner, M. Kamínek, J. Tupý, Ivana Macháčková

Biologia plantarum 32:396-400, 1990 | DOI: 10.1007/BF02898507

Mutagenic activity of 3-azido-1,2-propanediol and sodium azide applied to sugar cane callus cells

G. González, M. Pérez, I. Santana, M. Marcet, J. Staněk, Jana Moravcová, J. Jarv

Biologia plantarum 32:388, 1990 | DOI: 10.1007/BF02898505

Chlorophyll deficient plantlets were obtained after the treatment of sugar cane callus cells with 3-azido-l,2-propanediol (AG) and sodium azide with approximately the same frequency. Both mutagenic agents postponed the regeneration of plantlets from calli, the total number of regenerated plantlets following the AG treatment being, however, higher than after the sodium azide treatment and control.

Effect of chloride and sulphate types of salinity on characteristics of chlorophyll content, photosynthesis and respiration of chickpea (Cicer arietinum L.)

K. S. Datta, K. D. Sharma

Biologia plantarum 32:391, 1990 | DOI: 10.1007/BF02898506

Various regimes of predominantly chloride and sulphate salinity reduced chlorophyll (Chl) (a +b) content and net photosynthetic rate (Pn) in two cultivars ofCicer arietinum L. However, the rate of respiration (Rd) was stimulated up to 6 dS m^-1 of salinity and thereafter it declined with increase in salinity levels. Chloride salinity was more detrimental than the sulphate one as far as Chl (a +b) and Pn were concerned, but R_D was reduced more under sulphate salinity in cv. H-75-35 especially in 110 d-old plants. The cultivar L-144 was relatively more salt sensitive than the cv. H-75-35.