in this paper, the growth and yield of sunflower(helianthus annus l.) in addition to the soil properties are compared and assessed according to three irrigation types. it uses treated municipal wastewater, well water and their equal mixture for irrigation. for this purpose, pot trials are carried out in 4 months having 10 litres volume using completely randomized design with three times replica...

in order to evaluate the allelopathic potential of sunflower (helianthus annus l.) organs on germination and growth of dodder (cuscuta compestris l.), series studies were conducted in three separate experiments; as factorial based on completely randomized design (crd) with three replications for each experiments. first experiment was conducted in petri dishes and consisted of sunflower organs a...

in order to study the qualitative and quantitative yield and some agronomic characteristics of sunflower (helianthus annus l.) in response to seed inoculation with pgpr under various levels of nitrogen fertilizer, a factorial experiment was conducted based on a randomized complete block design with three replications in field experimental university of mohaghegh ardabili during growing season o...

this study was carried out as a factorial experiment with 5 levels of cadmium (cd) (o, 25, 50, 75, and 100 mg/kg), 5 levels of salinity (control, 4, 5, 6, and 7 ds/m), and two soil textures (sandy loam and clay loam). the results showed that the amount of cd in root and shoot of sunflower increased as soil salinity and cd concentration increased. the best concentrations for cd phytoremediation ...

The primary requirement for a new diploid species to arise via hybridization is ecological divergence from its parental species. Ecological divergence protects the nascent hybrid species from competition with its progenitor species and may contribute to reproductive isolation. However, the means by which hybridization might facilitate the necessary adaptive transitions are poorly understood. He...

Dear readers and friends,Welcome to our eighty-third volume, following an annus horribilis, with hopes that the coming year is better brighter.Our current issue result of terrible ye...

Can the complex phenotypes that characterize naturally occurring hybrid species be re-created in early-generation artificial hybrids? We address this question with three homoploid hybrid species (Helianthus anomalus, Helianthus deserticola, Helianthus paradoxus) and their ancestral parents (Helianthus annuus, Helianthus petiolaris) that are phenotypically distinct and ecologically differentiate...

We investigated quantitative trait loci (QTLs) for several leaf chemistry traits in early-generation hybrids between Helianthus annuus and Helianthus petiolaris, the parental species of the ancient diploid hybrid sunflower species Helianthus anomalus, Helianthus deserticola, and Helianthus paradoxus. We grew individuals of a second-generation backcross (BC(2)) toward H. petiolaris under optimum...