There are two optima for maximizing hydraulic conductance per vasculature volume in plants. Murray's law (ML) predicts the optimal conduit taper for a fixed change in conduit number across branch ranks. The opposite, the Yarrum optimum (YO), predicts the optimal change in conduit number for a fixed taper. We derived the solution for YO and then evaluated compliance with both optima within the x...

Plants display a range of striking architectural adaptations when grown at elevated temperatures. In the model plant Arabidopsis thaliana, these include elongation of petioles, and increased petiole and leaf angles from the soil surface. The potential physiological significance of these architectural changes remains speculative. We address this issue computationally by formulating a mathematica...

Plant petioles can be considered as hierarchical cellular structures, displaying geometric features defined at multiple length scales. Their macroscopic mechanical properties are the cumulative outcome of structural properties attained at each level of the structural hierarchy. This work appraises the compliance of a rhubarb stalk by determining the stalk's bending and torsional stiffness both ...

Abstract Background and aims The pasture legume Trifolium subterraneum ssp. yanninicum exhibits waterlogging tolerance. This study investigates diversity for tolerance within . We tested the hypotheses that (1) variation exists (2) is related to phenotypic growth trait differences, which (3) reflect eco-geographic variables at site of origin. Methods Twenty-eight diverse ecotypes collected from...

field trials with spathiphyllum wallisii regel were conducted at the experimental farm of faculty of agriculture, university azad jiroft in 2012 growth seasons. the aim of this work is to study the effect of foliar application with benzyladenine (ba) at 0, 100, 200 and 400 mg.l-1 and gibberellic acid (ga3) at 0, 100 and 200 mg.l-1 on the vegetative growth constituents of spathiphyllumplants. mo...

The paper deals with pharmacognosy of Centella asiatica (L.) Urban, including its morphological, anatomical, chemical constituents and powder analysis. Stomata are mostly anisotricytic, isotricytic and few tetracytic. Sphaero-crystals of calcium oxalate are observed in palisade, spongy and ground parenchyma of leaf lamina, petiole and rhizome and absent in roots. Uniseriate flagellate conical h...

Agricultural bioinoculants containing arbuscular mycorrhizal fungi represent a potential opportunity to reduce the dependence of grapevines ( Vitis ) on agrochemicals. This field study assessed ability four commercial colonize grapevine roots and their effects petiole nutrient concentration, berry composition, root morphology ‘Pinot noir’ vinifera grafted onto rootstock ‘Couderc 3309’ riparia ×...