Bloei en bloeihormonen in het bijzonder bij tarwe I
Over den invloed van de temperatuur op de koolhydraatstofwisseling bij de tulp en de hyacinth en de beteekenis daarvan v...
The influence of different temperatures on developement growth and flowering of hyacinths, tulips and daffodils
Heteroauxin und polaritaet, morphologische und elektrische, bei Coleus-stecklingen
Transport of 3-indoleacetic acid (IAA) in Coleus cuttings is only towards the base (indicated by root formation). The physical basis of Went's theory (1932) on IAA anion attraction by a positive pool and repulsion by a negative pool, was shown to be incorrect. Yet potential difference (PD) could be responsible for polar transport. PD-measurements s...
De periodieke ontwikkeling van Narcissus pseudonarcissus L.
De celloidine - microtoomtechniek toegepast op het anatomisch onderzoek van houtgewassen
Zur Anatomie und Physiologie der Zuwachszonen- und Jahresringbildung in den Tropen
Distinct zones of growth were usually only found in tropical deciduous trees with a periodically resting cambium. Reversedly a periodically resting cambium proved not to produce always distinct zones. All possible combinations of cambial activity and the formation of zones were shown to occur in the tropics. The zones could be distinguished in cros...
Bijdrage tot de kennis van den groei van Pseudotsuga taxifolia Britton in Nederland in verband met zijn beteekenis voor ...
Development of the green Douglas fir in the Netherlands in different places with different methods of planting was studied by enquiry, personal research and from the literature. The climate and soil types seemed suitable. Game, insects and fungi caused little damage. The stands studied all derived from seed from north-west America but the exact ori...
