1. Biological invasion can permanently alter ecosystem structure and function. Invasive species are difficult to eradicate, so methods for constraining invasions would be ecologically valuable. We examined the potential of ecological restoration to constrain invasion of an old field by Agropyron cristatum , an introduced C 3 grass. 2. A field experiment was conducted in the northern Great Plain...

Other common name(s): couchgrass, wheatgrass diet, agropyron Scientific/medical name(s): Raphanus sativus. The common name "radish" is derived from Latin radix (root). Description The radish is an edible root vegetable of the Brassicaceae family that was domesticated in Europe in pre-Roman times. Radishes have numerous varieties, varying in size, color and duration of required cultivation time...

Five smut fungi viz. Microbotryum scorzonerae on Scorzonera caliculata, Sporisorium aristidae-lanuginosae on Stipagrostisplumosa, Sporisorium desertorum on Lasiurus sindicus, Sporisorium foveolati on Dichanthium foveolatum,and Sporisorium vanderystii on Hyparrhenia hirta are reported for the first time for Iranian mycobiota. Sporisorium foveolati is also probably new to Asia. Bellevalia saviczi...

Native grasses interact spatially with themselves and their environment and can therefore be thought of as a system of dependent random variables. One method of modeling the spatial dependence of a multi-species population is a Gibbsian pairwise potential model. Since natural selection operates at the level of individual plants, the information obtained from such a model should provide a greate...

BACKGROUND Previous cytological and single copy nuclear genes data suggested the St and Y genome in the StY-genomic Elymus species originated from different donors: the St from a diploid species in Pseudoroegneria and the Y from an unknown diploid species, which are now extinct or undiscovered. However, ITS data suggested that the Y and St genome shared the same progenitor although rather few S...

In this work, morphological and anatomical features of seeds 15 Alyssum taxa (A. caricum, A. davisianum, filiforme, haussknechtii, murale subsp. var. murale, simplex, sibiricum, desertorum, hirsutum hirsutum, minutum, strictum, strigosum strigosum, szowitsianum, dasycarpum linifolium linifolium) from Turkey were examined with the cluster analysis, systematic importance these characteristics was...