EXPERIMENTS ON PHOTOPERIOD IN RELATION TO THE VEGETATIVE GROWTH OF PLANTS
- 1 April 1940
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 15 (2), 319-325
- https://doi.org/10.1104/pp.15.2.319
Abstract
Plants grown in long photoperiods (18 hrs. of light daily) contain more vitamin B1 than plants grown under otherwise similar conditions but under short (9 hrs. daily) photoperiod. This was true for Xanthium, 2 spp. of Brassica, Cosmos, and tomato. In similar expts. the growth of Xanthiurn and mustard in sand culture was increased by adding small amts. of vitamin B1 t;o the nutrient soln., and the growth-promoting effect was greater in short photoperiods. The effect of photoperiod on the vegetative growth of plants may be in part mediated by the effect of photoperiod on the production of vitamin B1. Other growth substances may be similarly effected by varying photoperiod.This publication has 4 references indexed in Scilit:
- Vitamin B 1 a Growth Factor for Higher PlantsScience, 1937
- PHOTOPERIODIC RESPONSES OF CERTAIN GREENHOUSE ANNUALS AS INFLUENCED BY INTENSITY AND WAVELENGTH OF ARTIFICIAL LIGHT USED TO LENGTHEN THE DAYLIGHT PERIODPlant Physiology, 1936
- RELATION BETWEEN THE DEVELOPMENT OF ROOT SYSTEM AND SHOOT UNDER LONG- AND SHORT-DAY ILLUMINATIONPlant Physiology, 1929
- RELATION BETWEEN TOP AND ROOT SIZE IN HERBACEOUS PLANTSPlant Physiology, 1929