Premium
IDENTIFICATION OF STARCH IN FROST‐DAMAGED BRASSICA NAPUS (CANOLA) SEEDS
Author(s) -
Van Caeseele L.,
MacGregor A. W.,
Mills J. T.
Publication year - 1985
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1985.tb08332.x
Subject(s) - canola , biology , frost (temperature) , rapeseed , starch , brassica , botany , white (mutation) , horticulture , food science , composite material , materials science , biochemistry , gene
Frost‐damaged rapeseed, or canola seed, shows a range of symptoms including the presence of white patches on the surface. When a portion of a white patch was teased back, a large number of globular particles were seen within the epidermal cells of the seed. When the globules were treated with α‐amylase they were partially digested and when viewed with polarized light displayed a Maltese cross pattern indicative of an ordered molecular structure like that of starch. This indicates that the white color on frost‐damaged rapeseed was associated with an accumulation of starch granules. Epidermal cells of dark surface areas on frost‐damaged seeds also contained starchlike granules, but relatively few compared to cells in white patches.