Azizollah Khandan-Mirkohi; Elmira Rabiee; Behrouz Janipour; Ahmad Ahmadi
Abstract
Enrichment of zeolite and sponge as ethylene absorbent with potassium permanganate was theidea of this study to provide an efficient way to scavenge ethylene during storage period ofthree Rosa hybrida cv. ‘Shiraz’, ‘Avalanche’, and ‘After-party’ cut flowers. A preliminaryexperiment ...
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Enrichment of zeolite and sponge as ethylene absorbent with potassium permanganate was theidea of this study to provide an efficient way to scavenge ethylene during storage period ofthree Rosa hybrida cv. ‘Shiraz’, ‘Avalanche’, and ‘After-party’ cut flowers. A preliminaryexperiment revealed that two mL of potassium permanganate solution (1 mM) was enough toenrich two grams of zeolite and two cm3 of sponge. Additionally, one μL L-1 of externalethylene also found to be effective on induction of quality damage to certain cut flowers ofrose cultivars, which were selected for injection in each isolated container for furtherevaluations. The treatments used in this study included control (without absorbent), enrichedzeolite or sponge, enriched zeolite or sponge + ethylene (one μL L-1). The quality of flowers,weight, number of dropped petals, electrical conductivity of vase solution, ethyleneconcentration in the container and petal anthocyanins evaluated through/the end ofexperiment. Results revealed that change or reduction in the quality parameters were minor(more maintenance or stability of quality was achieved) with enriched zeolite and thenenriched sponge compared to the control. Enriched zeolite could even maintain the quality ofcut flowers at the level of control under external ethylene injection superior to enrichedsponge treatment. ‘Avalanche’ and ‘Shiraz’ cultivars figured as the most sensitive andresistant cultivars to the evaluated level of external ethylene concentration, respectively.
Abdulhamid Mohebi
Abstract
Irrigation is an inevitable part of agriculture which determines crop yield and thus food security. In modern era of agriculture, crop yield is determined on the basis of crop production per unit of water-use instead of crop production per land unit area. Deficit irrigation is introduced as a strategy ...
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Irrigation is an inevitable part of agriculture which determines crop yield and thus food security. In modern era of agriculture, crop yield is determined on the basis of crop production per unit of water-use instead of crop production per land unit area. Deficit irrigation is introduced as a strategy for controlling water resources that leads to water resource preservation. Date palm requires regular irrigation after plantation at the primary growth stages. In the present study, the effect of applying superabsorbent polymers on required water for irrigation of date palm seedlings has been evaluated during 2011-2012. Treatments were 60%, 80% and 100% ETc irrigation and 0, 40, 80 and 120 g superabsorbents for each seedling. The experiment was conducted in RCBD and split-split plot experimental designs. Water requirement was calculated based on FAO pan method. Results showed that, percentage of establishment reduced significantly in all irrigation regimes including normal irrigation, mid stress, and severe stress. Moreover, using superabsorbents resulted in an increase in SOD activity under 80% irrigation deficit in comparison to full irrigation. Furthermore, it was demonstrated that superabsorbents significantly affected uptake of mineral nutrients and consequently resulted in a raise in seedling establishment.
