Book reviews

Ingrid Tichá

Biologia plantarum 22:64, 1980 | DOI: 10.1007/BF02878129

Book reviews

F. Pospíšil, M. Dvořák, Vlasta Čatská, J. Gloser, Z. Šesták, Ingrid Tichá, J. Kučera, J. Krekule, P. Veselý, Jana Pospíšilová, Z. Opatrný, T. Gichner

Biologia plantarum 22:73-80, 1980 | DOI: 10.1007/BF02878131

Effect of maleic hydrazide on peroxidase isoenzymes in relation to rooting hypocotyl cuttings ofPhaseolus mungo

R. N. Chibbar, K. Gurumurti, K. K. Nanda

Biologia plantarum 22:1-6, 1980 | DOI: 10.1007/BF02878121

A time course study of changes in the pattern of peroxidase isoenzymes shows that two new isoenzymesa andb appeared in hypocotyl cuttings cultured either in indolyl-3 acetic acid (IAA) + sucrose or in water but not in maleic hydrazide (MH). Roots were also initiated in the former two cases but not in the last case. That these isoenzymes may be associated with root initiation is also evident from the fact that these appeared when hypocotyl cuttings were transferred from MH to IAA + sucrose. The time of appearance of these isoenzymes in different cultures also synchronized with the time of microscopic root initiation. While the isoenzymea...

Comparison of seed proteins of some representatives of the genusPisum from the point of view of their relationship comparison by disc electrophoresis

Věra Hadačová, Věra Turková, E. Hadač, Eva Klozová

Biologia plantarum 22:7-16, 1980 | DOI: 10.1007/BF02878122

Ten taxa of the genusPisum were examined by disc electrophoresis in gels according to Davis and to Reisfeldet al. For evaluation of band patterns the Jaccard Index was applied.The results in both types of gels show thatPisum abyssinicum and especiallyP. fulvum have biochemically a relatively isolated position.Pisum elatius and its subspeciescaspicum andpalestinicum form a subgroup withP. cinereum;P. sativum var.zeylanicum and cv. Jupiter form another subgroup withP. syriacum.Our results are in good agreement with the results of Przybylskaet al. (with the exception...

The comparison of seed proteins of several representatives of the genusPisum with respect to their relationships An immunological comparison

Věra Turková, Eva Klozová, Věra Hadačová

Biologia plantarum 22:17-24, 1980 | DOI: 10.1007/BF02878123

Using immunochemical methods a comparison was made of a complex of water soluble (albumins) and salt soluble (globulins) seed proteins, especially vicilin and legumin, in selected species of the genusPisum, to determine the degree of their taxonomic relationship.Within the genusPisum the interspecific differences betweenP. abyssinicum, P. cinereum,P. elatius, P. fulvum, P. sativum, andP. syriacum are much smaller, and thus the taxonomic distances are shorter than is the casee.g. in the genusPhaseolus. In spite of this fact one may state thatPisum sativum, P. elatius andP. syriacum constitute...

Changes in dry weight and mineral composition of some oil producing plants over a range of salinity stresses

M. M. Heikal, A. M. Ahmed, M. A. Shaddad

Biologia plantarum 22:25-33, 1980 | DOI: 10.1007/BF02878124

Using water culture technique, some experiments have been performed to investigate the effect of 60 days salinization treatments (0.0-100 meq 1^-1 NaCl) on dry weight and on the content of some nutrient elements (Na, K, Ca, Mg, P, N) in castor bean, sunflower and flax plants. In general the content of sodium increased progressively with the rise of salinity level. The relatively low and moderate salinization levels (20 and 40 meq I^-1 NaCl) resulted in a promotion rather than inhibition of the dry weight and in the content of most of the investigated elements in the different organs of the test plants. However with the rise of salinization...

Water potential and sap flow rate in adult trees with moist and dry soil as used for the assessment of root system depth

J. Čermák, J. Huzulák, M. Penka

Biologia plantarum 22:34-41, 1980 | DOI: 10.1007/BF02878125

Sap flow rate (Q_w) and leaf water potential (Ψ_w.leaf) in adult specimens of birch (Betula) and oak (Quercus) were measured under contrasting soil moisture conditions (Ψ_w.sofl). With sufficient soil moisture Q_w reached about 250 cm³h^-1 calculated per unit tree-trunk segment as given by 1 cm length of its circumference. In soil water-stress conditions (when Ψ_w.leaf = = -15 × 10⁵Pa), birch stopped transpiration and wilted. Oak transpired even when Ψ_w.leaf fell below -20 × 10⁵Pa. The relation between Q_w...

Gradients of several leaf characteristics on stems of two forest herbs

P. Eliáś

Biologia plantarum 22:42, 1980 | DOI: 10.1007/BF02878126

The plants of two herbaceous species, namelyPulmonaria officinalis L. andSymphytum tuberosum L., growing in two deciduous forests in SW. Slovakia, were used for analysis of anatomicphysiological gradients along the insertion level of individual leaves. The gradients were established for six leaf characteristics. Specific leaf area and development of leaf area increased, while leaf tissue hydration, degrees of succulence and consistency decreased with height of insertion of leaves upon the stems. The gradients indicate the decreasing of the leaf water content and dry mass with height of the leaf on the stem. Stomatal resistance was usually...

Water stress effects on maize: Carbohydrate metabolism of resistant and susceptible cultivars ofZea mays L.

P. S. Thakur, V. K. Rai

Biologia plantarum 22:50-56, 1980 | DOI: 10.1007/BF02878127

Carbohydrate changea in drought resistant and susceptible cultivars ofZea mays L. were studied at two different stages under imposed water stress in water culture experiments. The gradual decline in total carbohydrates with increasing stress levels was observed. At the 1st leaf stage starch content of the resistant cv. Agati-76 was lower than that of susceptible cv. Vijay but the reducing and non-reducing sugar content was much higher. At the 3rd leaf stage starch content was similar in two cultivars but sugar content was higher in the resistant cv. Agati-76. Differential changes in root and shoot carbohydrates as affected by increasing levels...

Utilization of exogenous sugars by excised maize embryos in culture

Kornélia Burghardtová, J. Tupý

Biologia plantarum 22:57-64, 1980 | DOI: 10.1007/BF02878128

Sucrose was markedly superior to fructose and glucose in promoting growth of plantlets from immature maize embryos. The elongation of roots is shown to be more sucrose dependent than that of shoots. On the other hand, the exogenous sucrose was less effective than fructose as substrate for carbohydrate catabolism and for the synthesis of alcohol-insoluble compounds at the beginning of embryo cultivation. The absorbed fructose was found to be rapidly converted to sucrose and the level of endogenous sucrose derived from sugar supplied to the medium was higher in fructosethan in sucrose-fed embryos. The preferential utilization of fructose over sucrose,...

The effect of indole-3-Acetic acid on ethylene formation in wheat seedlings

Ivana Macháčková, V. Našinec, Z. Zmrhal

Biologia plantarum 22:65-72, 1980 | DOI: 10.1007/BF02878130

Isoperoxidase B 1 isolated from winter wheat (Triticum aestivum L., cv. Jubilar) seedlings was shown to catalyze ethylene formation from α-keto, γ-methylmercaptobutyric acid (KMBA). In the presence of Mn²⁺, indole-3-acetic acid (IAA), andp-coumaric acid, the kinetics by isoperoxidase B 1 catalyzed conversion of KMBA into ethylene and other products was similar to that of IAA oxidation. The reaction rate was therefore controlled by IAA through its electrondonating properties.Exogenous IAA induced ethylene formation in the segments of etiolated wheat coleoptiles. IAA-induced ethylene production was enhanced by...