Book review

Jarmila Solárová, B. Slavík, Jiřina Slavíková, Ingrid Tichá, J. Ullmann

Biologia plantarum 21:157-160, 1979 | DOI: 10.1007/BF02909470

Effect of nitrogen doses and row direction on LAI, light transmission, plant height and dry matter production of wheat cultivars grown in pure and mixed stands

M. R. Reddy, Rajendra Prasad

Biologia plantarum 21:85-91, 1979 | DOI: 10.1007/BF02909452

A field experiment was conducted to study the effects of N doses and row-direction on LAI, light transmission, plant height and dry matter production in the pure and mixed stands of 3 wheat (Triticum aestivum L.) cultivars Moti, Sonalika, and NP 824 differing in plant height. The mixed stands gave more transmitted light and shorter plants than the pure stands but dry matter production was not much affected. Nitrogen application increased the plant height, LAI, and dry matter but decreased the transmitted light. Row direction had no influence on plant height, LAI and dry matter production.

The effect of dehydration and rehydration on the nitrogen content of various fractions from resurrection plants

D. F. Gaff, G. R. McGregor

Biologia plantarum 21:92-99, 1979 | DOI: 10.1007/BF02909453

Nitrogen contents were determined in 20 species of "resurrection plants",i.e. plants with leaves which are able to revive from an air-dry state (viz. Boea hygroscopica, Borya nitida, Cheilanthes sieberi, Coleochloa pallidior, C. setifera, Craterostigma plantagineum, Myrothamnus flabellifolia, Oropetium capense, Pellaea calomelanos, P. falcata, P, viridis, Polypodium polypodioides, Ramondia pyrenaica, Selaginella lepidophylla, Sporobolus stapfianus, Talbotia elegans,Tripogon loliiformis, Xerophyta retinervis, X. villosa, X. viscosa), and in three desiccation sensitive species (Eragrostis tenuifolia, Selaginella kraussiana...

Effect of soil matric potential on leaf water potential, diffusive resistance, growth and development ofGmelina arborea L. seedlings

F. E. Fasehun

Biologia plantarum 21:100-104, 1979 | DOI: 10.1007/BF02909455

Gmelina arborea L. seedling growth and diurnal stomatal opening (as measured by stomatal resistance) were studied at soil matric potential 0, -0.1 and -0.72 × 10^-5 Pa. Leaf area, leaf number, plant height and dry weights of the vegetative parts were significantly reduced as soil matric potential decreased from 0 to -0.72 × 10^-5 Pa. The growth responses followed the same trend as net assimilation rate and relative growth rate. The highest moisture stress induced leaf senescence and leaf fall. Leaf water potential decreased from - 2 × 10^-5 Pa to - 20 × 10^-5 Pa with increasing soil moisture stress. Results...

On the dynamics of phytol content during the development and degradation of chlorophyll in primary leaves of wheat seedlings (Triticum aestivum L.)

Gaby Walter

Biologia plantarum 21:105-112, 1979 | DOI: 10.1007/BF02909457

The amounts of total phytol and its chlorophyll-bound and free portions have been determined quantitatively at different developmental stages of primary leaves of wheat using thin-layer chromatography combined with a potassium permanganate reaction. During the greening of etiolated leaves a close correlation exists between chlorophyll and phytol contents. Phytol is always present in excess and only in a bound state. During induced leaf senescence phytol is essentially degraded more slowly than chlorophyll. The liberated phytol does not influence the hydrolytic activity of chlorophyllase.

Short term cultivation of isolated barley roots and their mitotic activity

Běla Landová, M. Ondřej

Biologia plantarum 21:113-118, 1979 | DOI: 10.1007/BF02909458

Roots were excised from barley embryos cultivated in the complete liquid nutrient solution and cultivated in the same nutrient solution separately. The excised roots continued their growth but a progressive decrease in the growth rate was observed. There was a considerable short-term drop of the mitotic activity immediately after excision, which was followed by a compensatory increase and then equilibrium was reached 12 h after excision. During the next at least three days, the mitotic index of isolated barley roots varied between 5-6.5%, which is slightly lower than the mitotic index of the root meristems of isolated barley embryos under identical...

Isolation and characterization of a trypsin inhibitor fromVigna sinensis seeds

J. Xavier-Filho, Francisca D. N. de Souza

Biologia plantarum 21:119-126, 1979 | DOI: 10.1007/BF02909460

The major trypsin inhibitor ofVigna sinensis cv. seridó was isolated and shown to be devoid of chymotrypsin inhibiting activity. It has a molecular weight of 9800 as determined by gel electrophoresis and a pI of 5.0. The activity of the inhibitor was decreased by treatment with trinitrobenzenesulfonic acid, suggesting that it isa LYS-X type trypsin inhibitor. Selfassociation of the molecule was demonstrated both in 1% sodium dodecylsulfate and inacidic (pH 2.4) conditions.

Utilization of the label from bacterial [³H] DNA by isolated barley roots and embryos under different conditions

M. Ondřej, J. Šatava, Květuše Schwammenhöferová

Biologia plantarum 21:127-135, 1979 | DOI: 10.1007/BF02909462

[³H] DNA fromEscherichia coli and [³H] thymidine were applied, in sterile conditions, on isolated barley embryos and on roots excised from these embryos, both cultivated in the liquid medium and on halves of barley seeds, through the endosperm bridge. In embryos and roots, the labelled compounds were applied in 1.5% sucrose + 0.2 SSC alone, or together with either unlabelled thymidine or DEAE-dextran. Similar labelling indices were found after [³H] thymidine and [³H] DNA treatment which shows that the activity of [³H] DNA is utilized during the S phase. After application of [³H]...

Changes in growth and in uptake, distribution and translocation of phosphorus in susceptible and resistant alfalfa plants induced byCorynebacterium insidiosum

I. Hanker, Anna Kůdelová

Biologia plantarum 21:136-143, 1979 | DOI: 10.1007/BF02909464

The weight of alfalfa plants, especially roots of susceptible strain, decreased when inoculated withCorynebacterium insidiosum. At the 6th week after inoculation the³²P uptake per plant and its translocation into the above-ground organs were considerably decreased in susceptible plants. On the other hand, the³²P uptake was increased and the radiophosphorus was accumulated in above-ground organs in resistant plants.

Changes in phosphorus metabolism in alfalfa plants induced by bacterial wilt

I. Hanker, Anna Kůdelová

Biologia plantarum 21:144-148, 1979 | DOI: 10.1007/BF02909465

Radioactive phosphate was applied to the roots of intact alfalfa plants (Medicago sativa L.) on the 49th day after inoculation withCorynebacterium insidiosum (Me Culloch) Jensen and the³²P contents in different fractions of phosphoric compounds were determined. In inoculated plants, susceptible to bacterial wilt, the inorganio phosphate contents (³²Pinorg) was increased markedly and the³²P bound in organic compounds soluble in acids (³²Porg) decreased as compared with control. In roots of the same plants the³²P contents in phospholipid fraction and DNA were decreased. In tolerant...

The effect of cultivation temperature on nitrate reductase, glutamine synthetase and glutamate dehydrogenase levels in isolatedPisum sativum roots

J. Sahulka, Ludmila Lisá

Biologia plantarum 21:149-151, 1979 | DOI: 10.1007/BF02909467

Nitrate reductase (NR), glutamine synthetase (GS), and glutamate dehydrogenase (GDH) levels are differently influenced by cultivation temperature, NR level being influenced most and GDH level least. The differences caused by cultivation temperature are more pronounced in roots cultivated without sucrose in which a slower decrease in NR and GS levels and a lower increase in GDH level occur at 14 and 18 °C than at 24 °C in comparison to roots cultivated with sucrose. Sugar consumption also tends to be slower at 14 °C than at 24 °C in roots cultivated without sucrose.

The electron-microscopic proof of tobacco necrosis virus in hop plant

J. Chod, M. Jokeš, M. Novák

Biologia plantarum 21:152-153, 1979 | DOI: 10.1007/BF02909468

Following a previous biological and serological evidence of tobacco necrosis virus by means of an electron microscope, isometric virus particles of an average size of 26 ± 0.5 nm were found, in ultrathin sections prepared from the tissue of sprouting buds of underground stalks and from that of runners butts with symptoms of mosaic line pattern, as well as from the tissue of the indicator plantChenopodium quinoa.

Photosynthetic rates and diffusion resistances of sevenHevea brasiliensis muell. arg. clones

Z. Samsuddin, I. Impens

Biologia plantarum 21:154-156, 1979 | DOI: 10.1007/BF02909469

Significant differences in the net photosynthetic rate (P_N) of sevenHevea brasiliensis clones are found. Though much smaller than the internal resistance to carbon dioxide diffusion (r_i), the stomatal resistance to CO₂ diffusion (r_s') shows larger variation among the clones and might largely explain the differences in P_N.

In memoriam of Academician Ctibor Blattný

Biologia plantarum 21:83-84, 1979 | DOI: 10.1007/BF02909451

Cell membranes and ion transport

J. Slavík

Biologia plantarum 21:99, 1979 | DOI: 10.1007/BF02909454

An introduction to environmental biophysics

Danuše Hodáňová

Biologia plantarum 21:104, 1979 | DOI: 10.1007/BF02909456

Molekularbiologie und entwleklung

J. Krekule

Biologia plantarum 21:118, 1979 | DOI: 10.1007/BF02909459

An illustrated guide to pollen analysis

Milada Vavrdová

Biologia plantarum 21:126, 1979 | DOI: 10.1007/BF02909461

Managing saline water for irrigation

Jarmila Solárová

Biologia plantarum 21:135, 1979 | DOI: 10.1007/BF02909463

Advanced techniques in biological electron microscopy II

Ingrid Tichá

Biologia plantarum 21:148, 1979 | DOI: 10.1007/BF02909466