BA: 

19940704809

ET: 

Photoinhibition of seed germination in the maritime plant Matthiola tricuspidata.

AU: 

Thanos, C. A.; Georghiou, K.; Delipetrou, P.

AA: 

Institute of General Botany, University of Athens, Athens 15784, Greece.

SO: 

Annals of Botany, 1994, Vol.73, No.6, pp.639-644, 16 ref.

AB: 

Seed germination was studied in the 3-horned stock, M. tricuspidata, a widespread annual plant of the Mediterranean sandy shores. Seeds were dark germinating and negatively photosensitive. Full germination was obtained at a wide range of temperatures (5-25 deg C) in the dark. Inhibition of germination under light of various spectral qualities was generally correlated, negatively and positively, respectively, with phytochrome photostationary state () and relative cycling rate of phytochrome (H). The inhibition of germination by white (fluorescent), blue and far-red light, applied either continuously or intermittently, consistently showed a linear dependence upon the logarithm of the flux density of the irradiation. The resulting photoinhibition curves had parallel slopes and, compared with those of other maritime plants, they were shifted to higher flux densities. Continuous blue or far-red irradiations, both establishing a similar value (0.26), resulted in statistically similar regression curves, thus favouring the hypothesis that phytochrome is the single photoreceptor in the photoinhibition of seed germination.

DE: 

photoinhibition; phytochrome; white light; blue light; far red light; seed germination; germination; light

OD: 

Matthiola

ID: 

Matthiola tricuspidata; Capparales

UP: 

Brassicaceae; Capparidales; dicotyledons; angiosperms; Spermatophyta; plants; Matthiola

IS: 

0305-7364

CC: 

FF060

LA: 

English

DT: 

Journal article

SC: 

Seed Abstracts