عنوان مقاله [English]
In order to evaluate the effect of different planting dates and the corm size on yield and some physiological characteristics of saffron, an experiment was conducted as factorial in a randomized complete block design with three replications at the Research Farm of College of Abouraihan, University of Tehran, is located in Varamin dry plain during growing season 2013-2014. Four planting dates, 10 June, 7 and 27 September and 12 October and two corm sizes 5-9 g and 10-14 g were considered as treatments. Evaluated physiological traits include such as proline and protein content in leaves and yield traits, include number of flowers and dry weight of stigma were measured and were examined in a square meter and starting date of flowering were recorded. The results of this research showed that cultivation of large saffron corms (10-14 g) on planting date of 10 June, had Maximum yield, by production 62.7 number of flower and 0.299 gram dry weight of stigma in a square meter. Leaf proline concentration of small saffron corms (5-9 g) on planting date of 12 October and leaf protein concentration of small saffron corms (5-9 g) on planting date of 10 June, were higher than the other planting dates. Increasing proline concentration increased plant resistance under drought and cold in corms planting on 12 October, particularly small corms. In general, these results indicate that flower yield in first year is more influenced by corm size and planting of large corms (10-14 g) on 10 June will have a suitable production.
Amiri, M.E., and Bozorgzadeh, E. 2006. Biomass and harvest index of saffron under Zanjan conditions: Effect of corm. 2nd International Symposium of Saffron Biology and Technology, 28-30 October 2006. Mashhad, Iran. (In Persian).
Ashraf, M., and Folad, M.R. 2005. Role of glycine betaine and proline in improving plant abiotic stress resistance. Environmental and Experimental Botany 59: 206-216.
Azizi-Zehan, A.A., Kamgar-Haghighi, A.A., and Sepaskhah A.R. 2008. Crop and pan coefficients for saffron in a semi-arid region of Iran. Journal of Arid Environments 72: 270–278.
Bates, L.S., Waldren, R.P., and Teare, I.D. 1973. Rapid determination of free proline for water stress studies. Plant and Soil 39: 205-207.
Bradford, M.M. 1976. Rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein- dye binding. Analytical Biochemistry 72: 248-254.
Chandrashekhar, K.R., and Sandhyarani, S. 1996. Salinity induced chemical changes in Crotalaria striata DC. Indian Journal of Plant Physiology 1: 44–48.
Delauney, A.J., and Verma, D.P.S. 1993. Proline biosynthesis and osmoregulation in plants. The Plant Journal 4: 215-223.
Ghalavand, A., and Mazaheri, D. 2000. Effect of temperature on flowering and potential masses of Iranian saffron. Journal of Research and Manufacturers 4: 65-69.
Grilli-Caiola, M. 2004. Saffron reproduction biology. Acta Horticulture 650: 25-39.
Hoseini, S.M. 2000. Physiological study on cold tolerance in five varieties of pistachio in Rafsanjan. MSc Thesis, Department of Biology, Shahid Bahonar University of Kerman. Iran. (In Persian with English Summary).
Kao, C.H. 1981. Senescence of rice leaves. VI. Comparative study of the metabolic changes of senescing turgid and water- stressed excised leaves. Plant and Cell Physiology 22: 683-685.
Ma, B.L., Morison, M.J., and Videng, H.D. 1995 Leaf greenness and photosynthetic rates in soybean. Crop Science 35: 1411-1414.
Mansouri Deh Shoaib, R., Davari Nezhad, G., Hokm Abadi, H., and Tehranifar, A. 2011. Evaluate changes in proline, total protein and soluble carbohydrates during the pistachio flower bud phenology. Journal of Horticultural Science 25(2):116-121. (In Persian with English Summary)
Mashayekh, K., Kamkar, B., and Soltani, A. 2006. The effect of corm weight and environmental temperature of flowering behavior of saffron. 2nd International Symposium on Saffron Biology and Biotechnology, 28-30.
Mollafilabi, A., and Shoorideh, H. 2009. The new method of saffron production. 4th National Festival of Saffron, 27-28 October 2009.
Namin, M.H., Ebrahimzadeh, H., Ghareyazie, B., Radjabian, T., and Namin, H.H. 2010. Initiation and origin of stigma-like structures (SLS) on ovary and style explants of saffron in tissue culture. Acta Biologica Cracoviensia Series Botanica 52: 55-60.
Paul, M., and Hasegava, A. 1996. Plant cellular and molecular responses to high salinity. Annual Review Plant Physiology Plant Molecular Biology 51: 463-499
Pazoki, A., Karimi, M., and Fooladi, A. 2010. Effect of planting dates on the yield of saffron (Crocus sativus L.) ecotypes in Natanz. Journal of Crop Physiology 2: 3-12. (In Persian with English Summary)
Sadeghi, B., 1994. Effect of corm weight on saffron flower collection. Iranian Research Organization for Science and Technology 276 pp. (In Persian)
Sadeghi, B., Journalism, K., and Hatami, M. 2004. Effect of sowing time on collecting saffron flowers. Proceedings of the Third National Conference of Saffron. Ferdowsi University of Mashhad Press 517 pp. (In Persian)
Solomon, A., and Beer, S. 1994. Effect of NaCl on the carboxylating activity of rubisco and absence of proline related compatible solutes. Plant Physiology and Biochemistry 108: 1387-1394.
SAS Institute. 1999. SAS/Stat User’s Guide, Version 9.1. SAS Institute, Cary, NC.