Showing papers in "Environmental and Experimental Botany in 1981"

TL;DR: In this article, the authors reveal patterns of response of major United States crops to sulfuric acid rain (pH 3.0, 3.5 or 4.6) at harvest, the weights of the marketable portion, total aboveground portion and roots were determined for 28 crops.

TL;DR: Factors other than media may affect the growth and development of plant cell and tissues in culture, including light, temperature, and the gas phase which develops above the culture system.

TL;DR: The relationship between the water status of unifoliate leaves and leaf orientation of bean seedlings exposed to excess cobalt, nickel and zinc was examined in this article, but changes in leaf angles were not related to losses in relative water contents or water potentials of shoots and leaves.

TL;DR: The potential of in vitro fertilization and ovule culture is promising and in some situations may be a viable alternative to parasexual hybridization and somatic embryogenesis.

TL;DR: In this article, simulated acidity response functions were established between the responses of various plant parameters and the hydrogen ion concentration of the simulated rainfalls to better understand the sensitivity of various processes to simulated acidic rain and how the differences in sensitivity of these various processes affect plant productivity.

TL;DR: The results suggest that acidic precipitation is a potentially important environmental stress factor under marginal site conditions where bacterial symbiosis may be critical to the fitness of temperate leguminous plants.

TL;DR: The extent and effect of salinity, research on selection of salt tolerant alfalfa and rice cells and basic studies on physiological mechanisms associated with salt tolerance are discussed.

TL;DR: Within a several kilometre radius of the Four Corners Power Plant, lichen species had elevated concentrations of B, F, Li and Se compared with lichens of more remote sites as mentioned in this paper.

TL;DR: A sample of run-off water from a vertical, slate rock surface in Wales, U.K. contained abundant fragments of the lichen Parmelia glabratula ssp. fuliginosa from about 0.6 to 4.0 mm in diameter, a few fragments of Parmelia conspersa from 0.2 to 0.5mm in diameter and a large number of unidentified propagules from unknown size as discussed by the authors.

TL;DR: The effects of pH, chelating agents and amino acids on cadmium toxicity in the cyanobacterium Nostoc calcicola are described in this paper, where the effects of acidity, acidity and acidity levels on the toxicity of Cadmium are compared.

TL;DR: The S -AEC resistance of callus tissue was transmitted through plant regeneration and meiosis and expressed in callus re-established from embryos of second generation seed, and the high protein level was also expressed in advanced generations.

TL;DR: It is concluded that for this particular application, the scale-up of tissue culture techniques has been proven technically possible, economically feasible and is indeed being considered as the key to continued success of the commercial pyrethrum production of Ecuador.

TL;DR: Petunia plants (Petunia hybrida Vilm) of three varieties with differing air pollutant sensitivities were grown in controlled environments and the absorption rates of ozone (O3), sulphur dioxide (SO2) and nitrogen dioxide (NO2) determined during single gas and mixed gas exposures.

TL;DR: The experimental methods by which these types of variation can be distinguished are discussed and a review is given of cases of epigenetic variation in plant cells with particular reference to the most thoroughly examined type of epigenetics variant, habituation.

TL;DR: The results suggest trends of heterozygote superiority but no definitive causal relationships were found and a notable morphological response in flooded sunflowers was the formation of an extensive adventitious root system at the water surface.

TL;DR: The mutagenic effect of l -ethionine in plants was examined using heterozygotic soybean and maize and the mutational frequency increment was measured by the increase of mutant sectors on the leaf.

TL;DR: It could not be determined that a purely allelic difference accounted for sensitivity and resistance in two varieties of Cicer arietinum, but more chromosomal damage at the same dose was produced in the variety which showed more growth-inhibition, lower survival and more dose-delay at mitosis.

TL;DR: Rose plants and conidia of Diplocarpon rosae were not affected by a 4-fold increase over ambient UV-B (280–320 nm) but the sensitive entity was the conidium germ tube before it penetrated the leaf.

TL;DR: Exposure to ultraviolet radiation increased the effects of radiation on kernel abortion in different genetic backgrounds within a species or the transmission of different alleles at the same locus, resulting in partial abortion with the amount dependent on the genetic background of the pollen source.

TL;DR: Comparison of transport rates indicates that although common mycorrhizal components are shared by roots of snow plants and trees, rates supporting rapid snow plant growth occur only in Abies concolor and Pinus Jeffreyi.

TL;DR: Thorough characterization of the frequency, stability, stability and biochemical properties of a variant cell line will aid in establishing the basis of the altered phenotype, even in the absence of a direct genetic analysis through meiosis.

TL;DR: In this article, the density of the root tissues at atmospheric pressure decreased with distance from the tip, approaching 1% at a distance of 4 mm from the root tip, and the gas content of the meristem was less than 0.05% total tissue volume.

TL;DR: In this article, a small free-flowing stream in Oregon was used to test the bioaccumulation of indium and dysprosium by the roots of red alder (Alnus rubra Bong).

TL;DR: The results confirmed that with regard to the seed coat color, white seeds are more sensitive than pigmented seeds, which suggests linkage between genes for seed Coat color and genes controlling radiosensitivity.

TL;DR: Evaluation of the comparative toxicity of 55 non-protein amino acids, in terms of their effect on growth of Lemna minor, revealed that these compounds possess a wide diversity in their growth-inhibiting ability.