Rice morphogenesis and plant architecture: measurement, specification and the reconstruction of structural development by 3D architectural modelling.

Background And Aims: The morphogenesis and architecture of a rice plant, Oryza sativa, are critical factors in the yield equation, but they are not well studied because of the lack of appropriate tools for 3D measurement. The architecture of rice plants is characterized by a large number of tillers and leaves. The aims of this study were to specify rice plant architecture and to find appropriate functions to represent the 3D growth across all growth stages.

Production and dispersal of Colletotrichum gloeosporioides spores on Stylosanthes scabra under elevated CO2.

This paper reports the effect of twice-ambient (700 ppm) atmospheric CO(2) concentration on infection, disease development, spore production and dispersal of the anthracnose pathogen Colletotrichum gloeosporioides in susceptible (Fitzroy) and partially resistant (Seca) cultivars of the tropical pasture legume Stylosanthes scabra under controlled environment and field conditions. Reduction in plant height due to anthracnose was partially compensated for by growth enhancement at elevated CO(2) in Fitzroy but not in Seca. Anthracnose severity was reduced under elevated CO(2) although the reduction was only significant in Fitzroy.

The effect of the potential antipsychotic ORG 5222 on local cerebral glucose utilization in freely moving rats.

The effects of administration of different doses of the potential antipsychotic Org 5222 (0.01 and 0.1 mg/kg i.

Ecology of a simple plant-herbivore system. Biological control of Salvinia.

The salvinia-herbivore system has been investigated in more detail than most, because of its relative simplicity due to the absence o f sexual and dormant stages in the plant's life cycle, the apparent genetic uniformity of the plant, the absence of water stress, the uniformity of the water surface habitat and the absence of herbivores outside the plant's native range. This review describes how biological control of salvinia was achieved and discusses ecological principles illustrated by salvinia and its herbivores.

Circadian variations in local cerebral glucose utilization in freely moving rats.

Sokoloff's [14C]2-deoxyglucose method has been applied to investigate circadian variations in local cerebral glucose utilization (LCGU). Freely moving rats were tested during two phases of the circadian light/dark cycle. In the rats tested during darkness, elevations in LCGU, when compared with animals tested during the light period, were observed in the primary and secondary visual cortex, the primary auditory cortex, the lateral geniculate nucleus, the amygdala, the entorhinal cortex, the hippocampus, the substantia nigra and the cerebellum.