اثر تاریخ کشت و اندازه پداژه بر میزان غلظت رنگیزههای فتوسنتزی برگ زعفران در دشت ورامین

Saffron is an ideal plant for cultivation in arid and semi-arid zones. Identification and application of the
scientific and novel methods of agronomy lead to increasing of saffron agricultural development and it can
play an important role in economy and agricultural thriving in arid regions of Iran. In order to evaluate the
effect of planting date and corm size on the content of photosynthetic pigments in saffron leaves, a field
experiment was conducted as factorial in a randomized complete block design with three replications at the
research farm in college of Abouraihan –University of Tehran, Pakdasht area is located in Varamin plain in
2013. Treatments included planting dates (10 June, 7 September, 27 September and 12 October) as a main
factor in the furrow cultivation, and two corm sizes (5-9 g and 10-14 g) as sub-plots. The results showed that
concentration of chlorophyll a, b and total chlorophyll and carotenoid pigments on 12 October was more than
other planting dates, while on 7 September and 27 September were same together, but on 10 June was less
than other dates. It was observed that the amount of pigments in big corm was higher than little corm, but
there was no significant difference between them.