مطالعه ميكرومورفولوژيكي و تاكسونوميكي جنس Papaver از سكسيون Meconidium در ايران

در اين مطالعه 9 تاكسون از جنس Papaver (sect. Meconidium) مورد مطالعه و بررسي قرار گرفت. تاكسونP. persicum subsp. persicum var. glabrum به عنوان يك واريته جديد معرفي مي‌گردد. تاكسونهايP. armeniacum subsp. armeniacum × subsp. pilgerianum و P. persicum × P. armeniacum به عنوان دو رگه دو والدي معرفي مي‌گردند. زيرگونهP. persicum subsp. microcarpum براي اولين بار از غرب ايران گزارش مي‌شود. مورفولوژي دانه گرده و بذر گونه‌هاي مورد مطالعه با استفاده از ميكروسكپ نوري و الكتروني شرح داده شده و با يكديگر مقايسه شدند. همچنين ويژگيهاي تاكسونوميكي، رويشگاه، كليد شناسايي و پراكنش جغرافيايي گونه‌ها ارايه گرديده است.

Pollen grains and seed morphology of nine taxa from Papaver L. genus belonging to section Meconidium were examined by using light and scanning electron microscopy and their taxonomic significance evaluated. The basic shape of pollen grains in most studied taxa is prolate – spheroidal, but suboblate and oblate – spheroidal pollen grains also have been seen. The grains are tricolpate and their surface is microechinate. Seeds are reniform; the shape of epidermal cells is polygonal or rectangular and anticlinal walls of epidermal cells are mostly sinuate, rarely straight. Our results revealed that palynogical data are not of much taxonomic significance in separation of taxa, whereas differences in seed characteristics among the taxa are valuable in separating taxa at specific and infraspecific levels in the section. Also, during taxonomical studies of the genus, we found a new variety which is described as P. persicum subsp. persicum var. glabrum. P. persicum subsp. microcarpum (Boiss.) Kadereit is recorded here for the first time from W. Iran. Moreover, two new hybrids are recognized in Iran: 1) P. persicum × P. armeniacum, 2) P. armeniacum subsp. armeniacum × subsp. pilgerianum. For these taxa, taxonomical characteristics, localities, identification key and geographical distributions are given.