Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2007.1126.1129Aegilops crassa from Iran]]>RanjbarM. NaghaviM.R. ZaliA. AghaeiM.J. 72007107Abstract: Principal component and cluster analyses were used to evaluate the pattern of morphological variation in 122 accessions of Aegilops crassa for 14 quantitative characters. With the principal component analysis, the first five principal components with eigenvalues more than 1 contributed 69.5% of the variability amongst accessions, whereas PC6 to PC14 were less than unity. Plant height, stem diameter, spike length and number of spikelets per spike were the most important characters in the first principal component. The germplasm was grouped into five clusters using cluster analysis. Although each cluster had some specific characteristics of its own, but clusters were not clearly separated when plotted by the first two principal components. Mahalanobis distances (D2) determined that plant height, stem diameter, spike length, number of spikelets per spike, node width, seed length, seed width and flowering date characters as the most important characters in differentiating the accessions. The morphological variation of Aegilops crassa accessions obtained in this study provides useful information for the future collection and makes these genetic resources more accessible to breeders.]]>Ayana, A. and E. Bekele,1999Sorghum bicolor (L.) Moench) germplasm from Ethiopia and Eritrea.]]>46273278Carmona, A. and A. Casa,2005Polaskia chichipe (Cactaceae) in the Tehuacan valley, centeral Mexico.]]>60115132Eig, A.V.,1929Gattung Aegilops.]]>Everitt, B.S. and G. Dunn,1992Ghafoor, A., F.N. Gulbaaz, M. Afzal and M. Arshad,2003Cicer arietinum L.).]]>35613624Ghaphor, A., A. Sharif, Z. Ahmad, M.A. Zahid and M.A. Rabbani,2001Vigna mungo L. Hepper).]]>69183190Grenier, C., P.J. Bramel-Cox and P. Hamon,200141234240Hair, J.F., R.E. Anderson, R.L. Tatham and W.C. Black,19923rd Edn.,Hegde, S.G., J. Valkoun and J.G. Waines,2002Aegilops, Amblyopyrum and Secale species-a preliminary survey.]]>42608614IBPGR,1981Johnson, R.A. and D.W. Wichern,19882nd Edn.,Pages: 607Pages: 607Kaiser, H.F.,196020141151Kihara, H., K. Yamashita, M. Tanaka and S. Sakamoto,1957Aegilops crassa.]]>51112Knaggs, P., M.J. Ambrose, S.M. Reader and T.E. Miller,2000Aegilops tauschii Coss.]]>911519Leilah, A.A. and S.A. Al-Khateeb,200561483496Naghavi, M.R. and R. Amirian,2005Aegilops tauschii.]]>7392394Naghavi, M.R. and M.R. Jahansouz,200547375379Ortiz, R., E.N. Ruiz-Tapia and A. Mujica-Sanchez,199896475783Smith, J.S.C. and O.S. Smith,19924785140Sneath, P.H.A. and R.R. Sokal,1973Tie, P.Y.P. and J.D. Miller,200242958964Upadhyaya, H.D. and R. Ortiz,200110212921298Van-Slageren, M.W.,1994Aegilops L. and Amblyopyrum (Jaub. and Spach) Eig (Poaceae).]]>pp: 94-107pp: 94-107Zaharieva, M., A. Dimov, P. Stankova, J. David and P. Monneveux,2003Aegilops L. species from Bulgaria.]]>50507517