Annual forbs form short-term persistent soil seed banks whereas perennial grasses form mostly transient ones in the central Monte desert. A conceptual framework predicts that annual forb seeds will have primary dormancy, whereas perennial grasses will have low dormancy levels. We assessed whether the dormancy traits of four annual forb species and five perennial grass species can account for th...

Switchgrass, Indiangrass, and big bluestem are warmseason grasses that are a suitable alternative for summer pasture in Iowa. Their advantage over cool-season grasses such as bluegrass, bromegrass, and orchardgrass is their ability to produce during midsummer. These warm-season perennial grasses start growing in late spring as air and soil temperatures increase. Leaf growth often occurs in earl...

grasses are natural homogenous group of plants and belong to the gramineae family (poaceae). the value of grasses to mankind has been recognized since the dawn of human civilization and culture of cereal grasses. in the present study, leptochloa uniflora hochst (poaceae) was subjected to antioxidant and phytochemical profiles using uv-vis, ftir and hptlc. antioxidant assays were studied using d...

grasses in New Zealand suggests that some adapted to low grazing pressure as a result of no major herbivores with a distinctive habit — the shedding of old leaves by abscission. The feature of leaf shedding occurs in only about three per cent of the world’s estimated 11,000 grass species, writes Alexandre Antonelli at the University of Zurich and colleagues in Switzerland and New Zealand in the...

Hedonic and homeostatic hunger represent two different forms of eating: just for pleasure or following energy deprivation, respectively. Consumption of food for pleasure was reported to be associated with increased circulating levels of both the orexigenic peptide ghrelin and some specific endocannabinoids in normal-weight subjects and patients with morbid obesity. To date, the effects of palat...

Recent evidence associates the persistence of invasive plant species with disturbance and fluctuations in distinct forms of mineral N in soils. We conducted soil and hydroponic experiments to investigate the influence of N form and availability on germination and seedling development of 2 invasive annual grasses, cheatgrass (Bromus tectorum) and medusahead (Taeniatherum caput-medusae) and 6 per...

Highly palatable foods play a salient role in obesity and binge-eating, and if habitually eaten to deal with intrinsic and extrinsic factors unrelated to metabolic need, may compromise adaptive coping and interpersonal skills. This study used event sampling methodology (ESM) to examine whether individuals who report eating palatable foods primarily to cope, to enhance reward, to be social, or t...