this study was conducted to evaluate the effects of exogenous polyamines, isopropyl ester, 2, 4-d and naphthalene acetamide application on yield and quality of date palm of ‘kabkab’ cultivar. the inflorescences sprayed with 2, 4-d isopropylester (0, 10, and 20 mg l-1), naphthalene acetamide (0, 80, and 120 mg l-1), putrescence and spermidine (0, 0.1, and 1.0 mm), three or six weeks after pollin...

the aim of this study was to identify the effect of spermine and salicylic acid on several growth parameters, such as shoot length, shoot fresh and dry weights, amount of protein and carbohydrate, of badami and qazvini pistachio cultivated variety under copper stress. the experiment design was completely randomized with three replicates per treatment and four levels of copper (o.5, 30, 45, 60 µ...

the present study was carried out to investigate micropropagation possibility and determine the optimal medium composition and plant growth regulators (pgrs) combinations under in vitro conditions. the cotyledon and epicotyl explants obtained from 1 month old in vitro grown seedlings were used in ms medium containing ba (0.1, 0.2, 0.5, 1, 2 and 3 mg-1) and tdz (0.1, 0.2, 0.5, 1, 2 and 3 mg-1) e...

background & aim: dracocephalum genus belongs to the lamiaceae family which has eight species in iran. dracocephalum kotschyi boiss is an important medicinal and aromatic plant that use in pharmaceutical industry. in addition, this species is used in iranian traditional medicine. the aim of current study was to examine the various growth regulations and explants on direct organogenesis of d...

the present work developed an efficient plant regeneration and propagation system via direct organogenesis for morinda officinalis how., a valuable endangered medicinal plant. the effects of explant types on shoot induction, plant growth regulators on shoot proliferationand elongation and the subsequent rooting ability of shoots were examined. among the various types of explant, direct shoot pr...

individual grain weight of wheat kernels differs with their positions on a spike. cultivation practices (such as fertilizer nitrogen and plant growth regulators application) can be used to improve weight of basal and distal kernels. for this purpose, two experiments based on randomized complete block design were carried out with three replications. the aim of this research was to study the mech...

Pistachio is one of the economically important horticultural crops in Iran. The main pistachio-producing areas in Iran are located at the edge of the desert and are affected by soil and water salinity. Water and nutrient uptake by the root decreases under saline conditions. In this study, the effects of foliar growth regulators applied at different times on the nutrient uptake and leaf nutrient...

in order to optimize the micropropagation of qare-qat (vaccinium arctostaphylus j.j.sm), samples were collected from two regions of iran (asalem and kelardasht). anderson (an) media containing different concentrations of zeatin (0, 0.5, 1, 2 and 4 mg l-1) and different levels of ph (4.5, 5 and 5.5) were compared. the in vitro shoots were transferred on an media supplemented with zeatin (1 and 2...

In order to investigate the effect of seed pretreatment with growth regulators on biochemical characteristics of red bean genotypes, a factorial experiment was carried out in a randomized complete block design with three replications. In this research, seed pretreatment with growth regulators namely salicylic acid (SA) and naphthalene acetic acid (NAA) were applied at four levels including P0: ...