The objectives of this study were to collect and maintain wild barley accessions and to analyze their phylogenetic relationships among the accessions. Sixty wild barley accessions were collected from Syria (four accessions), Jordan (eight), Afghanistan (six), Iraq (three), Iran (four), Turkey (two), Pakistan (one), Tajikistan (one), Azerbaijan (one), Palestine (fifteen), and unknown area (fifteen). Seeds of the three accessions failed to germinate. Thirty-seven random amplified polymorphic DNA (RAPD) were generated and the phylogenetic relationship of the accessions was analyzed. Large genetic diversity existed among the collections and the collections were classified into 4 groups at a similarity coefficient of about 0.7698. Significant variations were observed within the collections from the same geographical location. The collections have sufficient genetic and morphological diversity for the genetic and phenotyphic analyses of traits associated with tolerance to abiotic stresses such as salt and drought.

Seeds and seedlings of Acacia bivenosa D.C. Prod, A. salicina Lindl., A. saligna (Labill.) H. Wendl. and A. tumida F. Muell. ex Benth were germinated and grown in NaCl solutions to investigate the relative salt tolerance among the different species, and t

Freshly collected pollens from opened and unopened flowers of two genotypes (EG45 and 1361) of Eucalyptus grandis were desiccated in oven at 30˚C and over silica gel in desiccator for various times. It was found that E. grandis pollen has a requirement of