Book reviews

Jana Pospíšilová, Jiřina Švachulová

Biologia plantarum 24:151, 1982 | DOI: 10.1007/BF02902862

Book reviews

B. Slavík, T. Gichner, J. Nečásek

Biologia plantarum 24:158-159, 1982 | DOI: 10.1007/BF02902866

The separation and comparison of albumin complexes of seed proteins in three cultivars ofPhaseolus vulgaris

Jiřina Švachulova, Věra Turkova, Eva Klozová

Biologia plantarum 24:81, 1982 | DOI: 10.1007/BF02902848

Complexes of water soluble proteins (albumins) were investigated in three cultivarsof Phaseolus vulgaris, viz: Yeltruská Saxa, Vainica Saavegra B, and Krupnaya sakharnaya. The first two cultivars exhibit haemagglutinating activity against rabbit erythrocytes, but have different elution profiles on Sephadex G-100. Their individual peaks have a different subunit composition, as revealed by SDS gel electrophoresis, as well as a different immunoelectrophoretic pattern, although proteins I and II of the specificity Veltruská Saxa are present in both cultivars. The cultivar Krupnaya sakharnaya expressively differs from the preceding lectin cultivars;...

Effect of some nitrogenous salts on nitrogen transfer and protease activity in germinatingZea mays L. seeds

Bandana Bose, H. S. Srivastava, S. N. Mathur

Biologia plantarum 24:89, 1982 | DOI: 10.1007/BF02902849

Maize seeds were allowed to germinate in the presence of different nitrogenous salts for 72 h. Changes in the ethanol soluble and insoluble nitrogen were studied in the embryo and in the endosperm. Supply of Ca(NC₃)₂ enhanced germination and protease activity in the endosperm resulting in greater solubilisation of protein to soluble nitrogen in the seeds. NH₄NO₃ and (NH₄)₂SO₄ were less effective as compared to Ca(NO₃)₂. Cycloheximide inhibited germination and protease activity.
Pretreatment also resulted in increase in growth, soluble and insoluble...

Effect of water stress on protein content in two maize cultivars differing in drought resistance

P. S. Thakur, V. K. Rai

Biologia plantarum 24:96, 1982 | DOI: 10.1007/BF02902851

The changing pattern, of WSD and concomitant protein changes were scanned in twoZea mays cultivars, with differential sensitivity to water stress. Increasing protein values were recorded in resistant cv. Ageti-76 with decreasing osmotic potentials of substrate (on 3rd day of stress), although the values in susceptible cv. Vijay remained almost on a par with the controls. In another experiment both the cultivars revealed initial increase of protein on 2nd day at osmotic potentials of - 2 and -4 × 10⁶ Pa, however, values declined up to day 7 of stress. WSD showed an increasing trend in both the experiments, although slightly higher...

Stomatal responses towards neutral red uptake and particulate movement in some arid zone plants

H. D. Lekhak, D. N. Sen

Biologia plantarum 24:101, 1982 | DOI: 10.1007/BF02902853

The stomata and their behaviour towards neutral red uptake in a few arid zone plant species under stress conditions have been inve stigated. Variable patterns of accumulation or non-accumulation and retention of this vital dye, by various cells of leaf epidermis have been observed. The neutral red uptake by the cells of the epidermal strip, coalescence of particles and their movement appear to be connected with the open/closed condition of the stomata.

A Simple model of the leaf daily water potential dynamics of some forest tree species

J. Huzulák, F. Matejka

Biologia plantarum 24:109, 1982 | DOI: 10.1007/BF02902855

A simple model was developed to characterize the daily water potential dynamics (Ψ_x of sun and shade leaves of three forest tree species (Quercus cerris, Acer campestre andCarpinus betulus) under anticyclonic weather types. Input data used for this-model were the vapour pressure deficit (d) and the soil moisture content (w.). The model is usable for the calculation of the actual Ψ_x-values with a probable error 0.18 -0.28 MPa and limits the maximum and minimum Ψ_x-values which may occur with the particular tree species. The model makes it possible to establish for each species the...

Studies on nitrate uptake by solution grown corn (Zea mays) L. genotypes

Raghuveer Polisetty, R. H. Hageman

Biologia plantarum 24:117-123, 1982 | DOI: 10.1007/BF02902857

Nitrate depletion from the media by intact corn seedlings grown under solution culture was measured over a period of time. Two methods were assessed to differentiate corn genotypes for nitrate uptake ability: (1) Nitrate uptake per day per plant basis. (2) Nitrate uptake per day per gram root dry matter basis. The former method was found to be superior as it gave significant and positive correlations with dry matter, nitrate, and reduced nitrogen accumulation in stem, leaf and roots. Nitrate uptake was found to vary with plant age. Root mass and efficiency of roots appear to contribute to the total nitrate uptake ability of the genotype. Corn genotypes...

Effect of water stress and gibberellic acid on germination of flax, sesame and onion seeds

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

Biologia plantarum 24:124-129, 1982 | DOI: 10.1007/BF02902858

The effects of different osmotic stresses (from 0 to -8× 10⁵ Pa) obtained with NaC or polyethylene glycol 6000 solutions on the germination of flax, sesame and onion seeds were investigated. The effect of presoaking with gibberellic acid (GA³) on the germination of the above mentioned seeds was also studied.
It was found that the rate of seed germination and the final germination percentages as well as the amount of water absorbed by the seeds were considerably lowered with the rise of osmotic stress levels whatever the stress agent used, more considerable reduction was obtained under polyethylene glycol 6000 than under NaCl.
Presoaking...

Effects of radiation, temperature and humidity on photosynthesis, transpiration and water use efficiency of oilseed rape (Brassica campestris L.)

D. P. Singh, N. C. Turner, H. M. Rawson

Biologia plantarum 24:130, 1982 | DOI: 10.1007/BF02902859

The net photosynthetic rate (F), transpiration rate (Q) and water use efficiency (F/Q) of oilseed rape (Brassica campestris L. cv. Span) was studied under a range of atmospheric conditions by gas exchange techniques. The plants were at the full bloom/pod initiation stage of development at the time of measurement. The environmental conditions consisted of various levels of photosynthetically active radiation (100 to 2800 (μmol m^-2 s^-1 PAK: 400-700 nm), air temperature (10 to 42°C) and vapour pressure deficit (0.7 to 2.1 kPa VPD). The peak values ofF were recorded at 1600 μmol m^-2...

Cellular differentiation and nitrogenase activity in the cyanobacteriumAnabaena

A. S. Ahluwalia, H. D. Kumar

Biologia plantarum 24:136-141, 1982 | DOI: 10.1007/BF02902860

Nitrogenase activity at periods of differentiation of heterocysts and akinetes was assayed by the acetylene reduction technique. There was no nitrogenase activity in ammoniumgrown, non-heterocystousAnabaena sp.; the activity appeared only after a lag-phase of about 17 - 21 h after the ammonium-grown culture had been transferred to medium free of combined nitrogen. This activity started appearing as the proheterocysts were developing to mature heterocysts. Maximum nitrogenase activity was attained with exponential phase of culture and mature heterocysts. This activity gradually decreased with the differentiation of akinetes. Only insignificant...

Regulation of ADPglucose pyrophosphorylase in cucumber plants infected with the cucumber mosaic virus

L. Šindelář, Miloslava Hanušová, Olga Makovcová

Biologia plantarum 24:142, 1982 | DOI: 10.1007/BF02902861

ADPglucose pyrophosphorylase level and mechanisms regulating its activity were studied in cucumber plants infected with the cucumber mosaic virus at the stage of chronic infection. Studies carried out with partially purified preparations of the enzyme have shown that there was no substantial difference in the regulatory influence of the ratio 3-PGA/P₁, or in the number of binding sites of the effectors on the enzyme, but that the virus infection reduced the level of the enzyme in the tissues to 74% of the control and the 3-PGA/P₁ ratio to one half which resulted in a further decrease in ADPglucose pyrophosphorylase activity. In...

Belić, J. (ed.): Fiziologija Kukuruza [Physiologie des Maises].

Ingrid Tichá

Biologia plantarum 24:95, 1982 | DOI: 10.1007/BF02902850

Nagl, W.: Elektronenmikroskopische Laborpraxis

Ingrid Tichá

Biologia plantarum 24:100, 1982 | DOI: 10.1007/BF02902852

IARC Monographs on the Evaluation of the Carcinogenic Risk of Chemicals to Humans. Some Metals and Metallic Compounds

T. Gichner

Biologia plantarum 24:108, 1982 | DOI: 10.1007/BF02902854

Evans, D. D., Thames, J. L. (ed.): Water in Desert Ecosystems

Jana Pospíšilová

Biologia plantarum 24:116, 1982 | DOI: 10.1007/BF02902856

McIntyre, A. K. (ed.): Water, Planets, Plants and People.

B. Slavík

Biologia plantarum 24:154, 1982 | DOI: 10.1007/BF02902864

A gradual reduction of female structures in the pistillate flowers ofRicinus communis L. (castor-bean) with chlorflurenol (morphactin)

Mary Varkey, R. K. Nigam

Biologia plantarum 24:152, 1982 | DOI: 10.1007/BF02902863

Chlorflurenol (morphactin) EMD 7301 W (60, 120 and 240 mg I^-1) when applied at five to seven leaf and 10-12 leaf stage induced hermaphrodite flowers in the inflorescences ofRicinus communis. The hermaphrodite flowers were mostly apical in position unlike the apical female flower in the control. With an increase in the time gap between sowing and emergence of the inflorescence there was a reduction of the female structures in the hermaphrodite flowers. The last formed inflorescences had an apical male flower in place of a female. The largest number of inflorescences with an apical male or hermaphrodite flower were produced with 60...

Responses of epidermal diffusive conductance to simultaneous changes in two factors: Determination of interactions

Jana Pospíšilová, Jarmila Solárová, J. Janda

Biologia plantarum 24:155, 1982 | DOI: 10.1007/BF02902865

Responses of the epidermal diffusive conductance (gep) to irradiance (I) during ontogeny of primary bean leaves or during their wilting were followed. Effects ofI, leaf age and leaf water potential (Ψw) as well as interactive effects (I × leaf age andI × Ψw) ongep were statistically significant.

Professor Hans Stubbe ist 80 jahre alt

T. Gichner

Biologia plantarum 24:160, 1982 | DOI: 10.1007/BF02902867

Dr. Jiři Čatský (50)

F. Pospíšil

Biologia plantarum 24:160, 1982 | DOI: 10.1007/BF02902868