title: Developmental stages of cucumber seedlings: kinetics of chlorophyll accumulation and other growth parameters.
abstract: The changes in morphology during dark germination and subsequent growth of cucumber (Cucumis sativus) seedlings in the light go through three different phases described as latent, active, and steady-state. This pattern is consistently observed for several related developmental processes. The latent period lasts about 2 days following water imbibition after which the following capabilities appear in concert: (a) root and stem elongation, (b) pigment synthesis including protochlorophyll, chlorophyll, carotenoid, and phytochrome, (c) synthesis of ribulose-1,5-bisphosphate carboxylase/oxygenase, and (d) enhancement of greening by excision. Following the active phase, which lasts for another 2 to 3 days, these processes slow to a steady-state. Inhibition of chlorphyll accumulation by SO(2) was only observed for seedlings in the steady-state phase.
authors: Botany Department, Tel Aviv University, Tel Aviv, Israel.
authors: R
authors: R
authors: Moran
authors: L P
authors: LP
authors: Vernon
authors: D
authors: D
authors: Porath
authors: T
authors: T
authors: Arzee