Premium
Alleviation and induction of dormancy by temperature in Impatiens glandulifera Royle
Author(s) -
MUMFORD PAULINE M.
Publication year - 1988
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1988.tb00224.x
Subject(s) - dormancy , stratification (seeds) , impatiens , desiccation , biology , chilling requirement , botany , germination , horticulture , seed dormancy , cultivar
summary Embryo dormancy in seeds of Impatiens glandulifera Royle can be overcome by maintaining them imbibed at 4 °C. The period of chilling required depends on the age and storage conditions of the dry seed; it decreases with seed age and is reduced by a high storage temperature. Fully imbibed seeds can remain dormant for several years at 20 °C if the stratification requirement is not met. Interrupting stratification at 4 °C with a period at 20 °C increases the chilling requirement in proportion to the length of the warm period. However interrupting stratification by desiccation has no effect on the chilling period required. The ecological implications of these findings are discussed.