Pii: S0022-474x(99)00031-4
نویسندگان
چکیده
Seeds of various wild and cultivated pulses express varied degrees of resistance to damage by Callosobruchus maculatus, a major pest of stored pulses. Seeds were analysed for trypsin/chymotrypsin inhibitors (qualitatively and quantitatively) and protein pro®les (SDS-polyacrylamide gel electrophoresis) to study the chemical basis of resistance to bruchid infestation. Seeds of the wild pulses Dunberia ferruginea, Neonotonia wightii, Tephrosia cararensis, Cajanus albicans and Vigna bourneae dier from other wild germplasms as well as cultivars in having characteristically higher levels of trypsin/ chymotrypsin inhibitors. SDS-PAGE analyses of seed proteins of Dolichos lablab, Lablab purpureus and Rhyncocea cana reveal the presence of high levels of non-nutrient chemicals such as vicilins, a-amylase inhibitors, and lectins in quantities that may impart resistance to C. maculatus. The importance of these protease inhibitors and other non-nutrient chemicals are discussed with reference to resistance to C. maculatus infestation. # 1999 Published by Elsevier Science Ltd. All rights reserved.
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Pii: S0022-474x(99)00023-5
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متن کاملPii: S0022-474x(99)00021-1
Source of diatomaceous earth (DE), insect species, grain moisture content, temperature, method of application and duration of exposure were all factors that in ̄uenced the mortality of stored-product insects. In all tests, regardless of the insect species, or source of DE, the lower the moisture content of grain, the greater the mortality. DEs from dierent geographical locations had dierent e...
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A process to control emissions of methyl bromide (MB) into the atmosphere following the fumigation of commodities has been developed. The process consists of adsorbing the MB in the vent-stream from a fumigation process onto activated carbon (carbon). Research was undertaken to observe the eects of (1) temperature, (2) relative humidity (r.h.), (3) the concentration of MB in the vent-stream, a...
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