an orchard experiment was conducted at gonabad pistachio production station., khorasan, iran (1998-2003). in some pistachio trees, especially in cv. owhadi, leaf marginal chlorosis was already observed. then, gradual drying of leaves extended to the leaves' centers up to midsummer. with respect to salinity problems, some researches were done. two orchards of pistachio known as no.6 and no....

This study attempts to investigate the origin of red pigments, time of reddening, and processes responsible for red colouring of the Upper Miocene age Upper Red Formation, the most important clastic unit in central Iran. Mineralogical composition and textural properties of the studied sequences show that the Upper Red Formation sequences were not red when deposited, although some parts of red p...

to assess required growing degree days (gdd) for phenological stages of four clover species in different planting dates a field experiment was conducted in 2010-11 and 2011-12 cropping seasons in seed and plant improvement institute in karaj, iran. three planting dates (14 september, 28 september and 13 october) and six clover varieties were assigned to main plots and sub-plots, respectively, a...

the relationship between altitude, slope and tree age with the red heartwood of beech (fagusorientalis lipsky) were investigated. transect sampling method was used to collect the data. theresults showed that in the 476 sampled trees, 132 trees were suffering the phenomenon of red heartswith deferent shape and size. the results indicate that the tree with red heartwoods in shafa-roudforest area,...

Freshwater and brackish species of bryozoans belong to the Phylactolaemata and Gymnolaemata class. Twelve species of bryozoans were recorded and morphologically determined at eight locations in the Black Sea and the Adriatic basin in Croatia. Twelve species of Bryozoa have been listed in the taxonomic index for Croatia (Conopeum seurati, Lophopus crystallinus Paludicella articulata, Cristatella...

abstract to produce embryogenic callus and somatic embryo, whole flower explants were collected at two sampling stages of i, iii. to produce embryogenic callus and somatic embryo, ms medium supplemented with 5 and 10µm 2,4-d and 2µm bap were used. for embryo differentiation, ms medium with 0.5mg/l iba, ms medium without any plant growth regulators, ms medium with 2mg/l iba and 0.2mg/l bap, ms m...

Tendrils produced from shoot tips of grapevine (Vitis vinifera L.) cultured in vitro on Nitsch's medium developed into inflorescences when 5 to 10 mum benzyladenine (BA) or 6-(benzylamino)-9-(2-tetrahydropyranyl)-9H-purine (PBA) were applied directly to the tendril tips. Inflorescences did not form on tendrils if the cytokinins were supplied in the agar. Tendrils cultured in agitated liquid med...