EFFECTS OF TEMPERATURE ON SEED GERMINATION AND SEED DORMANCY IN SORBUS GLABRESCENS CARDOT.

In a series of laboratory experiments, it was found that fresh seed of S. glabrescens Cardot was dormant and required a period of chilling to germinate.
Chilling was equally effective when given to intact berries or isolated seeds on moist filter paper.
Twelve weeks at 1°C was the most favorable treatment.

Following chilling, seed germination was optimum at 10–15°C. High temperature (25°C) inhibited germination and induced secondary dormancy, and this response appeared to be mediated through the testa and/or endosperm.

Practical implications of these results are discussed.

Seed Research in Horticulture

C.W. Taylor, W.A. Gerrie

https://doi.org/10.17660/ActaHortic.1987.215.25