Because of the growing number of pasture cultivars used in N.? and the drfficulty of rekably separating cultivars of the same species by morphologrcal characters, seed protein banding patterns have become a useful supplementary means of cultivar identrfrcation for the purposes of seed certiftcation and plant variety rights appkcations. Sodium dodecylsufphate polyacrylamide gel electrophoresis o...

Abstract Understanding the relationship between flowering patterns and pollen dispersal is important in climate change modelling, forecasting, forestry agriculture. Enhanced understanding of this connection can be gained through detailed spatial temporal observations on a population level, combined with modelling simulating dynamics. Species large distribution ranges, long seasons, high product...

Evolution of genes that specify cytosolic phosphoglucose isomerases (PGIs) has been studied in a natural intraspecific polyploid complex (Dactylis glomerata L.). Analyses of genetic control, polymorphism, and gene expression have been carried out in plants collected from numerous populations that belong to 14 diploid subspecies originating in the middle or at the end of the Tertiary period and ...

1. The relations between food intake, reticulo-ruminal motility and abomasal digesta outflow were investigated in ewes receiving lucerne (Medicago sativa) v. orchard grass (Dactylis glomerata) hay. Abomasal digesta outflow was recorded continuously by means of an electromagnetic flowmeter probe inserted into a duodenal T-shape cannula and the motility using strain-gauge force transducers. Volum...

Changes in vegetation from 1990 to 2000 were examined at 10 high country localities, representing four grassland types: fescue tussock (Festuca novae-zelandiae), snow tussock (Chionochloa rigida), red tussock (C. rubra), and silver tussock (Poa cita). At each locality, three treatments were established: ambient sheep+rabbit grazing, rabbit grazing only, and no grazing. The mutivariate methods o...

Under Mediterranean climates, the best strategy to produce rain-fed fodder crops is to develop perennial drought resistant varieties. Summer dormancy present in native germplasm has been shown to confer a high level of survival under severe drought. Nevertheless it has also been shown to be negatively correlated with annual biomass productivity. The aim of this study was to analyze the correlat...

There are several very accurate methods to determine leaf angles in closed canopies. However, these are generally very time-consuming or require special equipment. Average canopy leaf angles were derived from simple height and blade length measurements. An exponential relationship between the height/length ratio and the average blade leaf angle was used. The method was tested for two grass spec...

The thermotropic transition of plasma membrane of Dactylis glomerata was studied by using fluorescence polarization of embedded fluorophore, 1,6-diphenyl-1,3,5-hexatriene. Under the presence of 35% ethylene glycol, reversible thermotropic transitions were observed in isolated plasma membrane vesicles in nearly the same temperature range as the temperature of freezing injury to cells. In liposom...

Introducción. El uso de asociaciones gramíneas y leguminosas permite tener mayor valor nutritivo rendimiento materia seca. Objetivo. Evaluar seis mezclas forrajes perennes, anuales en épocas seca lluvias Nariño, Colombia. Materiales métodos. estudio se realizó entre diciembre 2017 noviembre 2018 el Centro Investigación Obonuco la Corporación Colombiana Agropecuaria (AGROSAVIA). Se utilizó un di...