赤色光／遠赤色光光量子比の変更により生長促進および抑制されたキュウリ苗の水分状態

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.