Successful climbing by vines not only prevents shading by neighbouring vegetation, but also may place the vines beyond ground herbivores. Here we tested the hypothesis that herbivory might enhance climbing in a vine species, and that such induced climbing should be greater in the shade. We assessed field herbivory in climbing and prostrate ramets of the twining vine Convolvulus arvensis. We eva...

Introducción. Los laboratorios dedicados a la producción in vitro de plantas ven afectado su trabajo, debido aparición contaminantes fúngicos o bacterias en los explantes, situa- ción asociada presencia plagas artrópodas como ácaros. Objetivo. Identificar las principales especies ácaros y asociación estos organismos con contaminantes, hongos diferentes comerciales cultivo tejidos vegetales el V...

it has been reported that several members of convolvulaceae family such as convolvulus arvensis possess cytotoxic activity on some tumor cell lines. proteoglycan mixture, the water extract of c. arvensis with high molecular weight, has potent anti-angiogenesis and stimulating effects. in this study, arial parts of c. arvensis were collected and identified, and the cytotoxic effects of chlorofor...

The objective of this work was to isolate and identify fungi associated with R. reniformis in cotton roots. Soil samples were collected in cotton fields naturally infested with R. reniformis and from cotton stock plants cultured in the greenhouse. Nematodes extracted from the soil were observed under the stereoscope, and discolored eggs and vermiform stages colonized with mycelia were cultured ...

ABSTRACT The population density of the reniform nematode, Rotylenchulus reniformis, was monitored at depths of 0 to 30, 30 to 60, 60 to 90, and 90 to 120 cm in a tillage and crop sequence trial in south Texas in 2000 and 2001. Main plots were subjected to three different tillage systems: conventional tillage (moldboard plowing and disking), ridge tillage, and no-tillage. Subplots were planted w...

Shou-Shu Gong,1 D. N. Sheng,1 Olexei I. Motrunich,2 and Matthew P. A. Fisher3 1Department of Physics and Astronomy, California State University, Northridge, California 91330, USA 2Department of Physics, California Institute of Technology, Pasadena, California 91125, USA 3Department of Physics, University of California, Santa Barbara, California 93106-9530, USA (Received 3 July 2013; published 2...