The impact of water deficit on stomatal conductance (g(s)), petiole hydraulic conductance (K(petiole)), and vulnerability to cavitation (PLC, percentage loss of hydraulic conductivity) in leaf petioles has been observed on field-grown vines (Vitis vinifera L. cv. Chasselas). Petioles were highly vulnerable to cavitation, with a 50% loss of hydraulic conductivity at a stem xylem water potential ...

In this study the sensitivity of peach tree (Prunus persica L.) to three water stress levels from mid-pit hardening until harvest was assessed. Seasonal patterns of shoot and fruit growth, gas exchange (leaf photosynthesis, stomatal conductance and transpiration) as well as carbon (C) storage/mobilization were evaluated in relation to plant water status. A simple C balance model was also develo...

BACKGROUND Variability exists in children's activity patterns due to the association with environmental, social, demographic, and inter-individual factors. This study described accelerometer assessed physical activity patterns of high and low active children during segmented school week days whilst controlling for potential correlates. METHODS Two hundred and twenty-three children (mean age: ...

As in most part of Africa, the Bani basin (Niger River, Mali) is threatened by climate changes. This study focuses on droughts hazard and its indicators as derived from the Climatic Moisture Index using the monthly data for the period (1963-2000), in order to examine the Bani basin vulnerability to water stress. In this study, water deficit (drought) was logically addressed using the Standardiz...

Effects of soil and atmospheric drought on whole-tree transpiration (E(T)), leaf water potential (Ψ(L)) and whole-tree hydraulic conductance (K(T)) were investigated in mature rubber trees (Hevea brasiliensis, clone RRIM 600) during the full canopy stage in the rainy season in a drought-prone area of northeast Thailand. Under well-watered soil conditions, transpiration was tightly regulated in ...

Indiahas the largest area under onion (Allium cepa) crop but its average productivity (14.21 t ha-1) is considerably lower than the world’s average of 19.4 t ha-1. Besides low productivity, irrigation efficiencies are also very low i.e. 30-35% in India. Managing onion crop with less than adequate irrigation water availability is a challenge in several parts of the country. Options of i) deficit...

Shortage of water resources is a major limiting factor for wheat (Triticum aestivum L.) production in the North China Plain. The objectives of this study were to evaluate the effects of supplemental irrigation (SI) on water use characteristics and grain yield of the wheat cultivars ‘Jimai 22’and ‘Zhouyuan 9369’. Two supplemental irrigation treatment regimens were designed based on target relati...

STATEMENT OF PROBLEM Two problems found in prostheses with soft liners are bond failure to the acrylic resin base and loss of elasticity due to material aging. PURPOSE This in vitro study evaluated the effect of thermocycling on the bond strength and elasticity of 4 long-term soft denture liners to acrylic resin bases. MATERIAL AND METHODS Four soft lining materials (Molloplast-B, Flexor, P...

Abstract: Tomato is a crop sensitive to water deficit and the responses of seeds germination under these conditions involve biochemical, physiological, molecular processes. The aim this study was evaluate physical, biochemical changes in tomato osmoprimed with selenium (Se) subjected during germination. LA 4050 3475 accessions were PEG 6000 solution (-1.0 MPa) plus Na2SeO4 (12.5 μM) or only for...

Measurements of the self-diffusion coefficient in supercooled ~ater to 300 MPa are reported. Translational diffusion in liquid water at 243 K is enhanced by 60% when the pressure is increased from 0. 1 to 150 MPa, and rotational diffusion is enhanced by almost 250% between 0. 1 and 250 MPa. These striking anomalies are interpreted in terms of the proximity of a conjectured line of spinodal-like...