Autotroph-heterotroph relationships in natural waters Silvestr PkátZdeněk Šesták OriginalPaper Pages: 81 - 92
The Cytomorphological Effects of Low Temperatures Studied by Temperated Fixatives Karel Beneš OriginalPaper Pages: 93 - 98
The Effect of β-Indolebutyric Acid on Phosphatase and Catalase Activity in Grape Vine Cuttings Jiří Luštinec OriginalPaper Pages: 99 - 106
Über den Einfluss einiger Humusstoffgruppen auf den Gehalt der oberirdischen Weizenteile an reduzierenden und nicht reduzierenden Zuekern Vladimír Tichý OriginalPaper Pages: 107 - 112
A New Strain of Tobacco Mosaic Virus Caused by Influencing the Metabolism of the Host Jaemila Svobodová OriginalPaper Pages: 113 - 122
Root formation in plants infected with yellows-type viruses Jan ZÁvadaVlk Valenta OriginalPaper Pages: 123 - 125
The behaviour of the S-strain of tobacco mosaic virus as detennined by biological tests Jarmila Svobodová OriginalPaper Pages: 126 - 134
Cadmium ions as inhibitore of tobacco mosaic virus Marie Uleychová-Zelinková OriginalPaper Pages: 135 - 141
The effect of extracted humus substances on growth of tomato plants Zdeněk Sladký OriginalPaper Pages: 142 - 150
Гамма-гексахлоцикл огексан в качестве полипоидогенного Вещества Зденек Ланда OriginalPaper Pages: 151 - 156
Über den Einfluss äthanollöslicher organischer Kompoststoffe auf den Zuckermetabolismus in grünen Pflanzenteilen Vladimír Tichý OriginalPaper Pages: 157 - 166
A Photoelectric Planimeter for Measuring Leaf Area V. P. BatyukE. F. RybalkoA. S. Okanenko OriginalPaper Pages: 167 - 175
The influence of photoperiodicity on the sexual index in hemp (Cannabis sativa L.) Jaroslav Limberk OriginalPaper Pages: 176 - 186