Ali Akbari; Orang Khademi; Yavar Sharafi; Seyed Jalal Tabatabaei
Abstract
Strawberry is sensitive to salinity stress. This experiment was conducted as factorial based on RCBD design to investigate the effects of putrescine treatments on reducing harmful effects of NaCl salinity stress in strawberry at Shahed University in 2015. NaCl treatments, 0, 25 and 50 mM, were applied ...
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Strawberry is sensitive to salinity stress. This experiment was conducted as factorial based on RCBD design to investigate the effects of putrescine treatments on reducing harmful effects of NaCl salinity stress in strawberry at Shahed University in 2015. NaCl treatments, 0, 25 and 50 mM, were applied in hydroponic medium on from the root zone of ‘Camarosa’ cultivar. Putrescine treatments were also applied at 0, 1.5 and 3 mM as foliage spray during growth period in 4 times with 15 days intervals. The results showed that, NaCl treatment especially at 50 mM, reduced shoot length, shoot fresh and dry weight, root fresh and dry weight, leaf number, leaf chlorophyll content, fruit number, fruit fresh and dry weight, yield and titratable acidity, and increased anthocyanin and total soluble solid content. Salinity stress had no effects on the root length. Application of 1.5 and 3 mM putrescines reduced harmful effects of salinity stress. Putrescines increased almost all characteristics under salinity condition and reduced total soluble solid content. Therefore, according to the results, putrescine, in both levels of 1.5 and 3 mM, could be a well strategy to reduce the limitation of salinity stress in strawberry production.
Sonia Jamali; Vali Rabiei; Javad Fattahi Moghadam
Abstract
Treated with different coating and application of methyl salicylate and salicylic acid are used for reduce chilling injury and maintain the quality of citrus fruit during storage. This experiment was carried out Citrus Research Institute of Ramsar in 91 years in order to study enzyme activity that involved ...
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Treated with different coating and application of methyl salicylate and salicylic acid are used for reduce chilling injury and maintain the quality of citrus fruit during storage. This experiment was carried out Citrus Research Institute of Ramsar in 91 years in order to study enzyme activity that involved in reducing chilling injury and Maintain the fruit quality based on Split Plot design with three replications. Fruits was treated and then placed in the cool storage at 5°C and 95 percent relative humidity)RH( for 80 days. Each 20 days with sampling investigated fruit enzyme activity was measured. Results showed the highest PAL enzyme activity was in fruits treated with methyl salicylate and the lowest was in fruits coated with the Bretix wax. The highest SOD enzyme activity related to Moro fruits which treated with methyl salicylate is in the first 20 days of storage )23/19 umg/FW(. The APX enzyme activity increased in both cultivars Thomson and Moro during storage. Relatively, treatments caused the change in APx, SOD and PAl enzyme activity.
Shahram Sedaghat Hoor; Leila Kheirabady
Abstract
According to high importance of sodding for fast creating green beds in all seasons, this experiment carried out with aimidentifying suitable substrate and covering plant including two lawn genus and Dichondra with blend seed. The trial carried out as factorial experiment with three factors based on ...
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According to high importance of sodding for fast creating green beds in all seasons, this experiment carried out with aimidentifying suitable substrate and covering plant including two lawn genus and Dichondra with blend seed. The trial carried out as factorial experiment with three factors based on complete block design in three replications. Experimental factors consisted of planting networks (a1: plastic mesh, a2: plastic sack) and planting substrates (b1 :garden soil, b2 :garden soil + carbonized rice husk, b3: garden soil + perlite, b4: garden soil + sand (v/v)) and types of covering plant (c1:Dichondra repens, c2 :Lolium perenne, c3:Poa pratensis, c4: blend seed including Lolium perenne Numan, Lolium perenne common type, Poa pratnesis Cronino, Poa pratensis Commonand Festuca rubra). The results showed the effect of experimental factors was significant on traits such as germination rate, the appearance quality of the lawn, height of the lawn, rooting depth, content of chlorophyll a, b and total, fresh and dry weight of shoots and total plant dry matter (P< 0.01 or 0.05). Based on the results the most chlorophyll content was observed in garden soil and the highest dry matter and plant growth belonged to garden soil + perlite bed. Lolium was the best in the most of traits such as germination rate and plant growth. Chlorophyll content of plants on sack plastic was better than plastic network, but the plastic network was better one in other traits such as dry matter.