HOMOPTERA INJURIOUS TO GRASSES

Grasses

over one’s genes? Perhaps it is because this notion resonates with a public that in the eighties and nineties the same press have bullied into believing that there is ‘a gene for everything’. In that sense, the debate is remarkably similar to the one on whether we humans (or animals in general) have such a thing as a free — or conscious — will. Much like with the idea of the vulgarised genetic ...

Woods Injurious to Human Health. A Manual

The authors begin by reviewing in vitro studies of lymphocyte movement. They report the dramatic effects of changing culture conditions upon locomotion. Under favorable conditions, lymphocytes approach the top speeds of neutrophils and monocytes. The authors also review the available evidence of lymphocyte chemokinesis and chemotaxis. Then they turn their attention to the relevance of these in ...

Natural hosts of russian wheat aphid diuraphis noxia (mordvilko)(homoptera: aphididae) in the fars province (iran) and a preference test for the grasses under greenhouse conditions

Toxicity of plant essential oils to Trialeurodes vaporariorum (Homoptera: Aleyrodidae).

A total of 53 plant essential oils were tested for their insecticidal activities against eggs, nymphs, and adults of Trialeurodes vaporariorum Westwood, using an impregnated filter paper bioassays without allowing direct contact. Responses varied according to oil type and dose, and developmental stage of the insect. Bay, caraway seed, clove leaf, lemon eucalyptus, lime dis 5 F, pennyroyal, pepp...

Molecular analysis of sorghum resistance to the greenbug (Homoptera: Aphididae).

Chromosomal regions of sorghum, Sorghum bicolor (L.) Moench, conferring resistance to greenbug, Schizaphis graminum (Rondani), biotypes C, E, I, and K from four resistance sources were evaluated by restriction fragment-length polymorphism (RFLP) analysis. At least nine loci, dispersed on eight linkage groups, were implicated in affecting sorghum resistance to greenbug. The nine loci were named ...