a laboratory experiment was conducted to determine the allelopathic effect of residues aqueous extract of two ecotype of swallowwort(cynanchum acutum l.) on germination traits of wheat (triticum aestivum l.). a factorial experiment based on a completely randomized design with four replications was conducted at islamic azad university of karaj in 2012. factors were two swallowwort ecotype (ghazv...

in order to evaluate salinity tolerance in 20 sugar bee genotypes, an experiment was conducted in two fields with salinity (ec= 12 ds/m, ph= 7.6) and non-salinity stress, in the form of rcbd at miandoab agricultural research station. different morphological and physiological traits such as root yield, sugar percentage, white sugar percentage, molasses, n, na, k, syrup purity and green cover per...

Seed heteromorphism observed in many halophytes is an adaptive phenomenon toward high salinity. However, the relationship between heteromorphic seed germination and germination-related hormones under salt stress remains elusive. To gain an insight into this relationship, the roles of gibberellins (GAs) and abscisic acid (ABA) in regulating germination of Suaeda salsa dimorphic brown and black s...

Abstract Albardine ( Lygeum spartum L.) is one of the major native grass species semi-arid and arid regions Mediterranean basin. In Algeria, it much more widespread on high plateaus southern Oranais. This occupies an important place in steppe region because has many ecological, economic, fodder interests. The present work aims to study tolerance L. seeds water salt stress, two abiotic factors t...

BACKGROUND AND AIMS Temperate endophyte-infected (Neotyphodium sp.) grasses have been shown to exhibit an ecological advantage over endophyte-uninfected grasses under abiotic stressful conditions. It is predicted that endophyte-infected plant populations will display higher rates of germination and proportion of germinated seeds under limiting water conditions. METHODS The hydrotime regressio...

Background & Aim: Because of seed germination ability of medicinal plants seed is low and, generally exposed to problem. Priming is one of the techniques that help seeds to be germinated faster and uniformly. Experimental: A laboratory experiment was carried out on germination and growth improvement in Heracleum persicum Desf.  by seed osmo-primming in Seed Technology Labora...

The effect of cadmium chloride concentrations (25.50, 75, and 100 mg/kg soil), seeds pre-irradiated by low doses of gamma rays (15, 30, 45, and 60 Gy), potassium chloride (60 mg/kg soil) and the combination of cadmium + gamma and cadmium + potassium on Brassica rapa germination, oxidative stress and antioxidant system were investigated under laboratory and greenhouse conditions. Germination per...