Biologia plantarum, 1969 (vol. 11), issue 4

Article

A contribution to the analysis of associations between economic yield components and four morpho-physiological subcharacters in winter wheat

J. Smoček

Biologia plantarum 1969, 11:260-269 | DOI: 10.1007/BF02921142

Genotypic, phenotypic and environmental correlations were ascertained in a set of 18 winter wheat varieties from experiments conducted for two years on two levels of mineral nutrients. Analysis of genotypic relationships found between yield components, area and length of the last leaf, angle of the second leaf and length of the plant at heading time was made using Wright's path coefficients.
In some instances the analysis showed, in comparison with simple genotypic correlation in reality, a different direct association of the pair of characters, the causal basis of which consisted in a relatively high indirect effect of other variables used in the...

Studies on air passage capacity of maize leaves at varying light intensities, temperatures and fertilization levels in field conditions

Anna Buch, S. J. Maleszewski

Biologia plantarum 1969, 11:270 | DOI: 10.1007/BF02921143

A new porometer operable in field conditions was used to study air passage capacity of maize(Zea mays) leaves in relation to light intensity, temperature and ferilization. In addition to light intensity, temperature was found to affect stomatal movement in a significant manner.

Der Einfluss von Phenäthylpyridinen und Pyridylphenylazetylenen auf die Wurzelatmung vonSinapis alba L.

Olga Makovcová, L. Šindelář, P. Vaculík

Biologia plantarum 1969, 11:277 | DOI: 10.1007/BF02921144

Es wurde die Aktivität der Succinatdehydrogenase SDH und des Succinatoxydasen-systems SO am sechsten Tag nach dem Aufkeimen in einem Wurzelhomogenat von Senfkeimpflanzen, die in einer Nährlösung mit einem der drei Phenäthylpyridin- (IIIA, B, C) oder Pyridylphenylazetylen-Raumisomere (IVA, B, C) in der Konzentration 5×10^-4 m kultiviert wurden, bestimmt. Die Phenäthylpyridinverbindungen beeinflussen die Aktivität der Succinat-dehydrogenase SDH praktisch nicht, wederin vivo nochin vitro, die Pyridylphenylazetylene stimulieren jedoch die Aktivität dieses Enzymsin vivo bedeutend. Beide Arten von Verbindungen hemmen aber signifikant...

A strain of Holmes' ribgrass virus occurring in Yugoslavia

N. Juretić, Mercedes Wrischer, Z. Polák

Biologia plantarum 1969, 11:284-290 | DOI: 10.1007/BF02921145

A virus having 300 nm long rod-shaped particles was isolated fromPlantago media L. in Yugoslavia. The virus was transmitted to 15 species of host plants the symptoms of which are described in detail. The symptoms corresponded to those that appeared after infection by the original Holmes' ribgrass virus (HRV).
The investigated virus was compared both with the common strain of tobacco mosaic and the original Holmes' ribgrass viruses by means of serological tests. The agar double-diffusion tests showed that it is closely related to HRV and remotely related to the common strain of TMV. On the basis of these results we concluded that this virus...

Electrophoretic assay of protein fractions, non-specific esterase fractions and acid phosphatase fractions in extracts from leaves and apple blossoms

J. Sahulka

Biologia plantarum 1969, 11:291 | DOI: 10.1007/BF02921146

Electrophoreograms of protein extracts from leaves of the variety Lord Lambourne, detached at the flowering period toward the end of April, differed quantitatively from electrophoreograms of protein extracts from leaves detached from shoots at the end of May and June. Electrophoreograms of protein extracts of leaves from juvenile seedlings, detached at the end of May and June, did not differ from electrophoreograms of protein extracts of leaves from shoots of the variety Lord Lambourne detached at the same period. Electrophoretic pattern of protein fractions and the fractions of non-specific esterase from leaves differed from the corresponding electrophoretic...

A methodical contribution to the gravimetric determination of the transpiration of intact plants in early stages of development

S. Priehradný, A. Nižnanský

Biologia plantarum 1969, 11:299-309 | DOI: 10.1007/BF02921147

A simple modification of a laboratory gravimetric technique for the study of transpiration of intact plants is described, by which the process can be followed continually. The plants are grown in light vessels on a light "keramzite" or other suitable medium, either alone or in combination with agar gel. The mineral component provides for the necessary cultivation properties of the medium, whereas agar gel ensures steady and undisturbed water relations in longer experiments.
The calculation of the transpiration intensity per unite of time is described. For reliable results the number of samples must be lange chough, so that the coefficient of variation...

The estimation of heritability of some developmental characters in natural populations ofArabidopsis thaliana (L.)Heynh

Jiřina Dobrovolná

Biologia plantarum 1969, 11:310-318 | DOI: 10.1007/BF02921148

The investigation concerns to what extent the phenotypic variability of some characters connected with the developmental rate inArabidopsis thaliana (L.)Heynh. is of genetic nature. For this reason, in a variable natural populationStř the values of coefficients of heritability were estimated by means of offspring-parent regression coefficients and of intraclass correlation coefficients for the three following characters: "number of days to appearance of the flower primordia", "number of rosette leaves" and "number of rosette leaves per day". The regression coefficients were calculated (1) by using simple progeny means, (2) the maternal...

Some properties of pea enation mosaic virus isolated from field pea and broad bean plants in Bohemia

M. Musil, Olga Lešková

Biologia plantarum 1969, 11:319-323 | DOI: 10.1007/BF02921149

Pea enation mosaic virus (PEMV) was isolated from disea sed field pea (Pisum sativum L.ssp. arvense A.Gr.) and broad bean (Faba vulgaris Moench) plants grown as filed crops at Bohumilice in Bohemia. The virus proved to be pathogenic for the following plant species:Pisum sativum L. cv. Raman,Faba vulgaris Moench,Lens culinaris Med.,Vicia sativa L.,Lathyrus odoratus L.,Glycine soja L.,Phaseolus vulgaris L.,Chenopodium amaranticolor Coste andReyn,Nicotiana clevelandi Gray,Trifolium incarnatum L. The dilution end point of the isolate was higher in pea plants (10^-4)...

Purification and conservation of infective sugar beet mosaic virus

J. Chod, J. Polák

Biologia plantarum 1969, 11:324-326 | DOI: 10.1007/BF02921150

Sugar beet mosaic virus (SBMV) was precipitated by polyethyleneglycol (PEG) 6000 from the cell sap of infected sugar beet leaves. After centrifugation and addition of dextrane T 10 the virus was lyophilized. Its infectious activity was demonstrated by mechanical transmission toChenopodium quinoa Willd. and to sugar beet. Stability of infectious activity of the lyophilized virus was verified.