To investigate the origin of seven Ardisia crenata Sims seedlings with non-variegated foliages (VSm) from a progeny of a mother plant with variegated foliage and red berries (VM), morphological and genetic characteristics of these seedlings were compared with mother plants of A. crenata with VM, plants with non-variegated leaves and white berries (WM), and plants with non-variegated leaves and ...

Planting shrub seedlings under oil mulches has frequently been used for stabilizing mobile sands in Iran for during the last three decades. Sandy desert of Samad Abad, Sarakhs, northeast Iran, has been fixed by cultivating seedling of Haloxylon aphyllum under the oil mulches. Therefore this study was designed to investigate the effects of the sand fixation project on soil and vegetation propert...

The fungus Macrophomina phaseolina is the causal agent of charcoal rot in many crops, such as strawberries and beans. Symptoms include stem root chlorotic foliage. This disease’s management complicated because pathogen forms resistant microsclerotia. work aimed to obtain bacterial isolates for biocontrol M. arid regions. Two strains that grew well under low pH high salinity, named BsA3MX BsC11M...

Although herbaceous species generally show little within plant variation in δ13C, trees show large spatial and temporal differences. We found that the aspect of exposure and branch length accounted for up to 6‰ δ13C difference within the foliage of individual trees of Pinus radiata D. Don. The foliage on branches 0.5 m in length was as much as 4‰ more depleted in 13C than foliage on 10-m long b...

The seasonal variation in possum browse and foliage cover of five possum-preferred species was quantified and studied in northern Westland, New Zealand over a 24 month period. Four of the five species (Pseudopanax simplex, P. colensoi, Aristotelia serrata, and Elaeocarpus hookerianus) showed marked seasonal patterns in both browse and foliage cover, with maximum browse evident in winter/spring ...

Eastern hemlock (Tsuga canadensis [L.] Carriére) in the United States is threatened by the invasive hemlock woolly adelgid (Adelges tsugae Annand). The native hemlock looper (Lambdina fiscellaria Guenée) also appears to have played a role in previous population declines of this conifer. Although these two insects co-occur in much of the adelgid's invaded range, their interactions remain unstudi...

After screeninig several lhundlred cultures of fungi, actinomvcetes, aid bacteria isolated fromii various soils for plant growtlh regulating activity, a fungus culture. F7-2578 (identified later as Peneicilliumiit pufrpurresceiis), was found( whIiclh had a (lwNarfing effect on pea planits. A foliage spray of the culture filtrate inhibite(d the gro)wvth of the stemls, producing shortened interno...

Use of gap (created by tree falls) and non-gap forest understory sites by migrating birds in central Illinois was studied during spring and autumn for three years (19781980). Fruit and understory foliage were concentrated in gaps. Birds that relied on these resources (foliage-gleaning insectivores, frugivores in autumn) used gaps more than non-gaps. Birds that fed on food other than fruit and f...

Dittrichia viscosa (L.) W. Greuter is a pioneer species belonging to the Compositae family. It is widespread in the Mediterranean basin, where it is considered invasive. It is a source of secondary metabolites, playing an important ecological role. D. viscosa plant extracts showed a phytotoxic activity on several physiological processes of different species. In the current study, the allelopath...