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Aflatoxin in Arizona cottonseed: Lack of toxin formation following aspergillus flavus inoculation at sutures
Author(s) -
Lee Louise S.
Publication year - 1988
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02542563
Subject(s) - aflatoxin , aspergillus flavus , inoculation , cottonseed , lint , biology , horticulture , morning , veterinary medicine , botany , agronomy , food science , medicine
Aflatoxin assays were conducted on seeds from cotton bolls inoculated with Aspergillus flavus in commercial fields in Arizona. Inoculations were at sutures at the initiation of boll opening either in the morning or evening in August over a three‐year period. One morning inoculation was followed by a water treatment that simulated rain. Fully fluffed bolls were harvested after two or four weeks, and lint and seed linters were examined for bright‐green‐yellow‐fluorescence (BGYF). Ginned seed were assayed for aflatoxin. While BGYF of lint was detected, no seed linters exhibited BGYF and no seeds from the 140 bolls examined contained aflatoxin. Results imply that boll infection by A. flavus occurs before the initiation of boll opening, an observation that is in agreement with recent reports of A. flavus infection but contrary to conclusions made in earlier reports.