Developmental Stages of Cucumber Seedlings | Zendy

Rami Moran | Zendy; Leo P. Ver | Zendy; Dan Porath | Zendy; Tova Arzee | Zendy

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Developmental Stages of Cucumber Seedlings

Author(s) -

Rami Moran,

Leo P. Ver,

Dan Porath,

Tova Arzee

Publication year - 1990

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.92.4.1075

Subject(s) - cucumis , imbibition , phytochrome , germination , elongation , botany , greening , biology , chlorophyll , cucurbitaceae , steady state (chemistry) , hypocotyl , horticulture , chemistry , red light , ecology , materials science , metallurgy , ultimate tensile strength

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.

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