BACKGROUND Upland cotton, Gossypium hirsutum L., is one of the world's most important economic crops. In the absence of the entire genomic sequence, a large number of expressed sequence tag (EST) resources of upland cotton have been generated and used in several studies. However, information about the flower development of this species is rare. METHODOLOGY/PRINCIPAL FINDINGS To clarify the mo...

BACKGROUND AND AIMS In recent years, Cyperus rotundus has become a problem weed in lowland rice (Oryza sativa) grown in rotation with vegetables in the Philippines. As the growth of C. rotundus is commonly suppressed by prolonged flooding, the ability of the weed to grow vigorously in flooded as well as upland conditions suggests that adapted ecotypes occur in these rotations. Studies were cond...

during the past 500 years, iran and russia have experienced many ups and downs in their relations which have been accompanied with enmity and amity. these relations varied from cooperation under the safavids to enmity, war and interventions under the qajar dynasty, then to hostile and sometimes friendly relations under the pahlavi rule, and finally to collaborations within the past two decades ...

Knowledge of the hydrochemical dynamics of the trace metal manganese (Mn) in upland catchments is required for water quality management. Stream water Mn and other solutes and flow were monitored in two upland catchments in northern England with different soils: one dominated by peat (HS7), the other by mineral soils (HS4). Maximum Mn concentrations occurred at different times in the two catchme...

In August 2007, mosquitoes were collected using four different collection methods at 2 upland interior and 2 coastal villages in West Sumba District, East Nusa Tenggara Province, Indonesia. Methods included human-baited and unbaited tent and malaise traps, human-landing collections (HLC), and unbaited CDC light traps. Mosquitoes were identified to species by morphological characters and all ano...

BACKGROUND Previous transcriptome profiling studies have investigated the molecular mechanisms of pollen and anther development, and identified many genes involved in these processes. However, only 51 anther ESTs of Upland cotton (Gossypium hirsutum) were found in NCBI and there have been no reports of transcriptome profiling analyzing anther development in Upland cotton, a major fiber crop in ...

Switchgrass (Panicum virgatum) is a perennial warm-season grass native to North America that has been identified as a dedicated cellulosic biofuel crop. We quantified genetic diversity in tetraploid switchgrass germplasm collected at Oklahoma State University and characterized genetic relatedness among the collections from distinct regions. Fifty-six tetraploid accessions, including seven...

The varieties of marriage described by Manu and accepted by Vatsyayana are mentioned. The qualities of the bride and bridegroom for an ideal marriage are enumerated by Vatsyayana. The Shastraic view of the same along with the valid conditions of a Hindu Marriage under the Hindu Marriage Act, 1955 are contrasted. The role of the virtuous wife in house-keeping and looking after the husband, accor...

[1] Soil organic carbon (SOC) in cropland is of great importance to the global carbon (C) balance and to agricultural productivity, but it is highly sensitive to human activities such as irrigation and crop rotation. It has been observed that under certain improved management practices, cropland soils can sequestrate additional C beyond their existing SOC level before reaching the C saturation ...

We studied 15 riparian and upland Sonoran desert species to evaluate how the limitation of xylem pressure (Ψ(x)) by cavitation corresponded with plant distribution along a moisture gradient. Riparian species were obligate riparian trees (Fraxinus velutina, Populus fremontii, and Salix gooddingii), native shrubs (Baccharis spp.), and an exotic shrub (Tamarix ramosissima). Upland species were eve...