Evaluation of Spring Bread Wheat Lines (Triticum aestivum L.) and Their Classification by Using Some Agronomic Traits

Subject Areas : Journal of Crop Ecophysiology

A .R.  Tarinejad ¹ (Assistant prof., Department of Biotechnology, Facluty of Science, Tarbiat Moallem University of Azarbaijan. Tabriz, Iran)
A.  Daryani ² (Former Msc. Student of Plant Breeding, Islamic Azad University, Tabriz Branch. Tabriz, Iran)
S.  Aharizad ³ (Associate prof., Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Tabriz. Tabriz, Iran)
F.  Farahvash ⁴ (Assistant prof., Department of Agronomy, Faculty of Agriculture, Islamic Azad University, Tabriz Branch. Tabriz, Iran)
H.  Khanzade ⁵ (Staff member, Plant Breeding Division of Moghan, Agriculture Research Center of Moghan (OULTAN). Ardabil, IRAN)

Received: 2010-04-03 Accepted : 2010-10-08 Published : 2010-08-23

Keywords: factor analysis, Cluster analysis, yield, Bread Wheat,

Abstract :

To obtain superior genotypes from 30 advanced spring bread wheat cultivars a field experiment in RCBD was carried out in 1388. Traits like yield, yield components, harvest index, peduncle length, awn length, number of leaf, plant height, flag leaf area, penultimate leaf area, days to booting, days to spike emergence, days to flowering and physiological maturity were recorded. Analysis of variance showed significant difference among genotypes for the traits measured at %1 probability level. This indicates considerable genetic variations among the lines evaluated lines. Cluster analysis through Ward method, by using all of the traits, grouped lines into three clusters. Eight lines located in third cluster with respect to some traits including grain yield and other important traits like biological yield, number of seed per spike, spike length, peduncle length, plant height, flag leaf area, and number of spike per m² were superior. Factor analysis, five factors discriminated 78.99% of total variation. In this analysis, the first factor could determine 35% of total variation and nominated as effective factor on grain yield. Line with accession number N-75-5 was found to be highest yielding (289.5 g/m2 (as compared with the other lines.