فصلنامه گیاه و زیست فناوری ایران
سال دهم شماره 3 (پاییز و زمستان 1394)

In this study, a mix of sport grass includes Lolium perenne, fancy(25%) and esquire(25%), poa pratensis, brooklawn(10%) and liberator(10%) and festuca arundincea, Borneo(20%) and greystone(15%) are used. Treatments includes paclobutrazol(40, 80, 120 mg/l-1) that 4 liters of this solution per squar meter was injection in soil, maleic hydrazide(500, 1000, 1500 mg/l-1) that 0.5 liters of this solution per squar meter was spraying, maleic hydrazide and paclobutrazol with 3 concentration paclobutrazol 40mg/l-1 maleic hydrazide 500mg/l-1, paclobutrazol 80mg/l-1 maleic hydrazide 1000mg/l-1 and paclobutrazol 120mg/l-1 maleic hydrazide 1500mg/l-1 were used and control. This experiments with 10 treatment in 4 replication with randomaized complete block design done. Statistical analysis was performed using SPSS and average this with duncan test in 1% level werw compared. Based on research results, maleic hydrazide faster than paclobutrazol and even combine two material, reduce growth.

Study the effect of silisum spray in rosa flowers, experiment in a completely randomized design with 7 treatments included 3 replications and each replications with 3 pots were conducted. Treatments include sodium silicate, calcium silicate and potassium silicate, each with two levels of 25 and 50 ppm and the pot was considered as control without spraying. Pots, two times in the first week of spraying was conducted on the same basis and traits such as petals antocyanin, leaf total chlorophyll, phenyl alanin amonialyase activity and flowers longevity on plant were evaluated. The results showed that the treatment of CaSi 50 ppm had the greatest effect on correction the traits. Result at 1% statistical level had significant effect.

This research for evaluated the effect of Gibberelic acid, Salicylic acid Benzyl adenine in pre and postharvest stage on some physicochemical and enzymes traits and vase life of Gerbera jamesonii is one of the most popular cut flowers that its production has increased in global markets and Iran for enhance the quality, shelf life and minimize postharvest losses in cut flower, done. For this purpose, an experiment based on completely randomized design with 8 treatments and 3 replications on cut flower gerbera 'Sorbet' were performed. In the first experiment, pulse treatment (24 hours), BA, GA3 and SA in 2 levels (50, 100ppm) and preservative solution of silver nano particles 3 ppm with 3% sucrose was used. Sliver nano particles3 ppm with 3% sucrose and distillated water were used as control. In the second experiment, spraying before harvest, BA, GA3 and SA in 2 levels (25, 50 ppm) was performed and then cut flowers transferred to preservative solution of silver nano particles 3 ppm with 3% sucrose. Sliver nano particles 3 ppm with 3% sucrose and distillated water were used as control. During experiment traits including vase life, relative fresh weight, and cell membrane stability index, anthocyanins of petals, phenylalanine ammonia lyase and super oxide dismutase enzymes activity was investigated. The results showed that in both experiments there were significant differences between the treatment and control, among of concentrations of BA, GA3 and SA, in the first experiment, SA 100 ppm and in the second experiment, salicylic acid 50 ppm and then preservative solution containing silver nano particles with sucrose, have the most favorable effect on quantitative and qualitative, enzymatic traits and vase life compared to other treatment. Correlations between traits in both experiments also indicate a significant positive correlation at 1% among vase life of gerbera cut flowers with all traits.

Gerbera and Polyanthus are two of very important in cut flowers global production. In this research,experiment on completely randomized block design with 12 treatment and 3 replications was carried out. The aim of this study was to investigate the effect of postharvest application of ethanol and sucrose on keeping quality and vase life of cut gerbera and polyanthus flowers. The cut flowers were harvested and after recut under water, were kept in preservative solutions containing sucrose 4%, ethanol 2.5% and combine sucrose and ethanol. The results showed that application of ethanol and sucrose increase vase life in cut gerbera and polyanthus flowers. Combination ethanol with sucrose increased significantly keeping quality and vase life flowers over control. Also, keeping gerbera and polyanthus cut flowers alone in preservative solution have better postharvest life than keeping them together.

In this research, effects of polyamine(putrescine, spermine and spermidine) on cut Rose was studied. PA each one in 100and 200 ppm and their combinations with sucrose(3%) and silver nanoparticles(4 mg/l-1) were tested as preservative mixture. This study was conducted in a factorial experiment with complete randomized design and the evaluated traits included relative fresh Wight, flower diameter, solution uptake, leaf total chlorophyll, SOD enzyme activity and vase life. The results shown that increased level of spermine to 200 ppm of this polyamine result in increase of SOD content, flower diameter, vase life, leaf total chlorophyll and solution uptake.

The aim of study was to investigate the chemical composition of essential oil of wild barberry (Berberis integerrima) in two zones is Shahko and Olang. This study applied Pzhvhshy-. A phenolic compound, flavonoids, antioxidants, alkaloids and glucose concentration was determined by spectrophotometry and isolation. The experiment was a completely randomized design with three replications. Comparison of means with Duncan test at 5%, respectively. Statistical analysis using SPSS 21 software and drawing shaper definition was performed using Excel 2010. The results showed that the active compounds (phenol, flavonoids, antioxidants, alkaloids and sugar) in different plant organs wild barberry Berberis integerrima is different from each other. The highest amount of active ingredients in fruits and lowest in the stem. As well as comparative studies between the two regions showed that all wild barberry Berberis integerrima active components plant in the region Shahkuh Most of the area has been Olang.