Influence of climatic factors on fruit morphological traits in Populus euphratica Oliv.


  • Azam Soleimani Department Forestry & Forest Engineering, College of Natural Resources & Marine Science, Noor, Mazandaran Province, Iran
  • Vahid Etemad Faculty of Natural Resources, University of Tehran, Karaj, Iran
  • Mohsen Calagari Research Institute of Forests and Rangelands, Karaj, Iran
  • Manochehr Namiranian Faculty of Natural Resources, University of Tehran, Karaj, Iran
  • Anoshirvan Shirvani Faculty of Natural Resources, University of Tehran, Karaj, Iran



climate, fruit morphological traits, Iran, Populus euphratica


Populus euphratica Oliv. is a native species in arid and semi- arid zone of Iran distributing naturally in the vast regions. We studied the variation in fruit morphological traits in P. euphratica trees originating from seven provenances of Iran. P. euphratica samples were prepared from Karaj Research Station. In this study, catkin length, number of capsules in each catkin, capsule length, capsule width, capsule length to capsule width ratio, number of seeds in each capsule, seed length, seed width, seed length to seed width ratio, the weight of 1000 seeds and germination rate were measured. Analysis of variance on all morphological traits except germination showed significant differences (P < 0.05) among provenances. In addition, positive significant correlations were observed in some of the fruit morphological traits. Capsule length, seed length and number of seeds in each capsule showed a significant positive correlation with mean annual  precipitation, mean annual temperature and longitude. Seed width showed a significant negative correlation with longitude and latitude. The results show that morphological fruit characteristics in P. euphratica are mainly influenced by the mean annual temperature of the origins.


Alvaninejad S., Tabari M., Espahbodi K., Taghvaei M., Hamzepour M., 2010. Morphology and germination characteristics of Quercus brantii Lindl. Acorns in nursery, Iranian Journal of Forest and Poplar Research 17 (4): 523-533. Bayramzadeh V., Funada R., Kubo T., 2008. Relationships between vessel element anatomy and physiological as well as morphological traits of leaves in Fagus crenata seedlings originating from different provenances. Trees - Structure and Function 22: 217–224. Bonilla-Barbosa J., Novelo A., Hornelas Orozco Y., Marquez-Guzman J., 2000. Comparative seed morphology of Mexican Nymphaea species. Aquatic botany 68: 189-204. DOI: 10.1016/S0304-3770(00)00125-X Calagari M., Modir-Rahmati A., Asadi F., 2006. Morphological variation in leaf traits of Populus euphratica Oliv. Natural population. International Journal of Agriculture and Biology 8(6): 754-758. Callaham R.Z., 1964. Provenance research: Investigation of genetic diversity associated with geography. Unasylva 18: 40-50. Donahue J.K., Lopez Upton J., 1996. Geographic variation in leaf, con and seed morphology of pinus greggii in navite forests. ForestEcology and Management. 82: 145-157. DOI: 10.1016/0378-1127(95)03677-6 FAO, 1979. Poplar and willow in wood production and land use. FAO forest Service 10: 328-329. Ginwal H.S., Phartyal S.S., Rawat P.S., Srivastava R.L., 2005. Seed Source Variation in Morphology, Germination and Seedling Growth of Jatropha curcas Linn. InCentral India. Silvae Genetica 54(2): 76-80. Hiura T., 1993. Geographical variation and maintainance of species diversity of beech forest inJapan. Japanese Journal of Ecology. 46: 175-178. ISTA, 1993. International rules for seed testing. Seed Science Technology 21: 1-288. Koike T., Maruyama Y., 1998. Comparative ecophysiol¬ogy of the leaf photosynthetic traits in Japanese beech grown in provenances facing the Pacific Ocean side and the sea side ofJapan. Journal of Phytogeogrography and Taxonomy. 46: 23-28. Koyama Y., Yagihashi T., Migita C., Tanaka N., 2002. Geographical gradient of leaf area of Fagus crenata in theNaganoregion,Central Japan. Japanese Journal ofForestEnvironment. 44: 31–33. Masaka K., 2003. Preliminary Study of Geographic Trends in Acorn Mass and Seedling Emergence Behavior of Quercus dentate inHokkaido,Northern,Japan. Hokkaido Forestry Research Institute,Bibai,Hokkaido,Japan. 30 p. Rottenberg A., Nevo E., Zohary D., 2011. Genetic variability in sexually dimorphic and monomorphic populations of Populus euphratica (Salicaceae). Canadian Journal of ForestResearch 30(3): 482-486. DOI: 10.1139/cjfr-30-3-482 Sabeti H., 1976. Forests, Trees and Shrubs ofIran. Research Institute of Forests and Rangelands Publishers,Tehran,Iran. 806 p. Saito Y., Shiraishi S., Tanimoto T., Yin L., Watanabe S., Ide Y., 2002. Genetic diversity of Populus euphratica populations in northwestern Chinadetermined by RAPD DNA analysis. New forests 23: 97-103. DOI: 10.1023/A:1015605928414 Shiji W., Binghao C., Hugun L., 1996.Euphratespoplar forest.Chinaenvironmental science press,Beijing. 117 p. Tilki F., Alptekin C.U., 2005. Variation in acorn characteristics in provenances of Quercus aucheri Jaub. et Spach and provenance, temperature and storage effects on acorn germination. Seed Science Technology 33: 441-447. Wen Y., Tanga M., Sun D., Zhu H., Wei J., Chen F., Tang L., 2012. Influence of Climatic Factors and Soil Types on Seed Weight and Oil Content of Jatropha curcas in Guangxi, China. Procedia Environmental Sciences. 12: 439–444. DOI: 10.1016/j.proenv.2012.01.301






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