Rendement van de omzetting der lichtenergie in laboratoriumproeven en bij de groei van gewassen
Photoperiodism, floral induction and floral inhibition in Salvia occidentalis
Day lengths of 2-4 h were suboptimal for flowering induction, those of 4-12 h optimal, those of 12.5-3 h supra-optimal, and those of 13.5 critical. The first sign of transition from a vegetative to a generative state was an abrupt increase in apical cell division. Preceding long days (LD), age of the plant and defoliation did not influence sensitiv...
De invloed van temperatuur en licht op de groei en ontwikkeling van andijvie
The two main factors for bolting and flowering of endive were temperature and light; their influence on both growth and development was investigated. From experiments with successive dates of sowing, different raising temperatures and different growing conditions the following facts emerged: with increasing raising temperature, crop weight increased...
Actual and potential production of agricultural crops
Tropische landbouwplantenteelt in verband met licht en temperatuur
Rede Wageningen, 9 november 1961
Some aspects of photoperiodism in rice (Oryza sativa L.)
Photoperiodism was studied in 417 rice varieties of which 28, selected by differences in photoperiodic response, were studied in more detail. The plants were usually grown under 16 different photoperiods ranging from 5 to 24 h. In detailed experiments the types of response to short and long days were studied and each developmental stage of the plan...
On the relation between the maximum rate of photosynthesis and the thickness of the mesophyll in sun- and shade leaves o...
Photosynthesis of crop plants as influenced by light, carbon dioxide, temperature, and stomatal diffusion resistance
The effect was estimated of light intensity, leaf temperature, and C0 2 concentration on photosynthetic rate in leaves of crop plants. The potential capacities of photochemical and biochemical processes and of C0 2 transport were compared.Resistance to C0 2 transport in various parts of the pathway from external air to reaction centre in the chloro...
Preliminary observations on the effect of light intensity and photoperiod on transpiration and growth of young tomato pl...
Photoperiodiciteit bij Sorghum vulgare Pers.
Great millet of 35 varieties from several tropical and subtropical countries were tested for response to photoperiod. Some were analysed and measured extensively with photoperiods ranging from 5 to 24 h in a 24-h day. The development of the growing point was observed in relation to duration of growth from sowing until flower initiation and anthesis...
