Early-season soybean, Glycine max L. Merrill, was evaluated in Arkansas soybean fields as a trap crop for a complex of stink bug species that included Nezara viridula L., Acrosternum hilare (Say), and Euschistus servus (Say). Early-season soybean production systems (ESPSs) are composed of indeterminate soybean cultivars planted in April. In the first year of a 2-yr study, field-scale trap crops...

  Abstract Two experiments with factorial arrangements on the basis of randomized complete block design in three replications were conducted in 2007 and 2008, to evaluate chlorophyll content index (CCI), fluorescence of chlorophyll, proline content and grain yield of three soybean cultivars (Williams, Zan and L17) under a non-saline (control) and three saline (3, 6 and 9 ds/m NaCl) conditions...

Vegetable soybeans (Glycine max), the same species as fi eld-dried soybeans, have similar production requirements and good market potential for commercial producers in upper midwestern United States. Five vegetable soybean cultivars were tested for yield and quality characteristics and to assess the necessity of fi eld irrigation during 2003 and 2004 in North Dakota. Cultivars of different matu...

Soybean is an important source of plant protein used in human diets. Cadmium (Cd) from agricultural soil a toxic metal for plants, including soybean. Furthermore, the cadmium taken up to seeds soybean and becomes risk animals by feed food chain. A method avoid this represented selection breeding lines/cultivars with genetic potential minimized accumulation. This work reports approach assisted D...

Isoflavones in soybean seeds have putative health-beneficial effects. Previous studies demonstrated that foliar application of chitosan could increase soybean isoflavone concentrations. In this study we determined the impact of different chitosan solutions on gene expression and isoflavone concentrations of two soybean cultivars [AC Orford (low isoflavone cultivar) and AC Proteina (high isoflav...

Seed composition in soybean [Glycine max (L) Merr.] has not been well investigated under charcoal rot infestation under irrigated and non-irrigated conditions. The objective of the present experiment was to assess seed composition and nitrogen fixation under these conditions. No significant differences in protein levels in the moderately resistant germplasm line DT97-4290 were observed under th...

Five soybean cultivars, one each from Maturity Groups (MG) III, IV, V, VI, and VII, all susceptible to Heterodera glycines, were planted in H. glycines-infested soil in April, May, June, and July at multiple locations in Arkansas and Missouri. The purpose of the study was to determine whether planting early reduces yield losses due to H. glycines. The population levels of cysts, eggs, and secon...

This paper describes work to determine whether soybean cultivars differ in their physiological response to applied abscisic acid. ABA is a naturally occurring plant hormone that affects a number of physiological processes, including leaf abscission, leaf senescence, seed germination, bud dormancy, flowering, and tuberization (4). Usually, ABA is applied in various concentrations to whole plants...

Growth and anatomical responses of plants during latent and pathogenic infection by fungal pathogens are not well understood. The interactions between soybean (Glycine max) and two types of the pathogen Phialophora gregata were investigated to determine how plants respond during latent and pathogenic infection. Stems of soybean cultivars with different or no genes for resistance to infection by...

Abstract Two hundred and forty two direct-use mutant varieties generated by using irradiation, chemical mutagenesis and somaclonal variations, have been registered in Japan. About 61% of these were induced by Gammaray irradiation, largely due to successful collaboration with the Institute of Radiation Breeding. This high percentage of Gamma-ray irradiated mutants indicates that mutation breedin...