Temperature and the Growth of Impatiens Parviflora Dc.

SUMMARY The growth of Impatiens parviflora DC. under four temperature regimes (13°C, 16°C, 20°C and 23°C) and a constant 18 h photoperiod was analysed using the traditional methods of growth analysis. Temperature had a very marked effect upon the growth rate, but the net assimilation rate was not markedly temperature‐dependent. The results are discussed in the context of previous work on I. parviflora , notably that by Evans and Hughes in respect of light intensity and also in the light of a simple model presented by Warren Wilson (1972), in which the main growth analysis parameters were related to source and sink activities in the plant.