Growth and Water Status of Cucumber Seedlings under Altered Red/Far-Red Photon Flux Ratio

Abstract

Cucumber (Cucumis sativus L.) seedlings were subjected to altered red/far-red photon flux ratio to investigate how it affected their growth and water status. Stem elongation of seedlings was hastened when exposed to the 0.73 of red/far-red photon flux ratio but it was inhibited when the ratio was 1.88. The growth-induced water potential between the regions of elongation and maturation of the seedlings grown under the ratio of 0.73 was 0.09 MPa. However, the growth-induced water potential was 0.03 MPa when seedlings were grown under ratio 1.88.