Effects of water stress on germination of yarrow populations (Achilleaspp.) from different bioclimatic zones in Iran
Parvin Salehi Shanjani
psalehi@rifr-ac.irResearch Institute of Forests and Rangelands, P.O.BOX 13185-116, Tehran, Iran (Iran, Islamic Republic of)
Masoumeh Izadpanah
Research Institute of Forests and Rangelands, P.O.BOX 13185-116, Tehran, Iran (Iran, Islamic Republic of)
Mohamad Reza Mohamadpour
Azad University of Kardaj, Karadj, Iran (Iran, Islamic Republic of)
Abstract
The effects of water potential on germination were studied in 18 wild populations of three yarrow species (Achillea tenuifolia, A. vermicularis and A. filipendulina) from different bioclimatic zones in Iran. Water potential between 0 and -0.6 MPa were obtained using polyethylene glycol 6000 (PEG-6000) solutions. The study of water stress on germination showed that, regardless of the species and the populations, the lowering of the water potential reduced the capacity for germination and early seeding growth. These results indicated a strong genetic potential for drought tolerance during germination within each species. These differences in germination ability of wild populations of each species might be attributed to intraspecific variations resulting from the effects of natural selection and genetic pool background.
Keywords:
germination, polyethylene glycol, water potential, YarrowReferences
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Authors
Parvin Salehi Shanjanipsalehi@rifr-ac.ir
Research Institute of Forests and Rangelands, P.O.BOX 13185-116, Tehran, Iran Iran, Islamic Republic of
Authors
Masoumeh IzadpanahResearch Institute of Forests and Rangelands, P.O.BOX 13185-116, Tehran, Iran Iran, Islamic Republic of
Authors
Mohamad Reza MohamadpourAzad University of Kardaj, Karadj, Iran Iran, Islamic Republic of
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