Genetic Resources and Crop Evolution

, Volume 54, Issue 1, pp 129–138 | Cite as

Phenotypic diversity of durum wheat (Triticum durum Desf.) from Jordan

  • Nasab K. Rawashdeh
  • Nasri I. Haddad
  • Mohamad M. Al-Ajlouni
  • Munir A. Turk


Durum wheat landrace genotypes are disappearing from the main wheat areas in Jordan, because of spreading of new uniform cultivars and the serious reduction in wheat cultivation. This study was conducted to evaluate genetic diversity in durum wheat landraces from Jordan and to identify desirable agronomic traits. Landraces were collected from two target areas: Ajloun and Karak. The collected material was grown under rainfed conditions using an augmented design with five blocks and four repeated check cultivars. Data were collected for 14 morphological and agronomic traits. Phenotypic diversity index (H′) was estimated, and the relationships among accessions were measured using cluster analysis and dendrogram similarity matrix. The results revealed the presence of a wide range of variability among landraces., which possess high levels of variability for biological yield, fertile tillers, number of seeds per spike, seed weight per spike and weight of 1000 seeds. These landraces must be considered as a reservoir of genes that plant breeders need in their wheat improvement programs and should be conserved both ex situ and in situ.

Key words

Durum wheat landraces Phenotypic diversity index Plant genetic resources Triticum durum 


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Copyright information

© Springer 2006

Authors and Affiliations

  • Nasab K. Rawashdeh
    • 1
  • Nasri I. Haddad
    • 2
  • Mohamad M. Al-Ajlouni
    • 3
  • Munir A. Turk
    • 4
  1. 1.National Center for Agricultural Research and Technology Transfer (NCARTT)AmmanJordan
  2. 2.Department of Horticulture and Crop Science, Faculty of AgricultureUniversity of JordanAmmanJordan
  3. 3.Ago-biodiversity Conservation Project, National Center for Agricultural Research and Technology Transfer (NCARTT)AmmanJordan
  4. 4.Plant Production DepartmentJordan University of Science and TechnologyIrbidJordan

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