Phenotypic diversity among wheat landraces from Jordan: morphological and developmental traits
1999
Abdel-Ghani, A.H. | Duwayri, M. | Kafawin, O. (University of Jordan, Amman (Jordan). Department of Agricultural Research and Environment)
Wheat landraces are genetically heterogeneous populations. They have been commonly developed in traditional agriculture over thousands of years of natural selection as well as farmer-directed selection. Wheat landraces are also indispensable raw materials required for wheat improvement. Using various morphological and development traits, the structure of variation in 164 wheat landraces from Jordan were investigated. As a result, wheat landraces grown in Jordan were classified into either durum (98.8 percent) or bread wheat (1.2 percent). The landrace collection was scored for 26 qualitative and quantitative characters, each having two or more phenotypic classes. A relatively large number of landrace accessions had traits that were potentially desirable for wheat improvement programs. The whole collection was monomorphic for growth habit, and to some extent for awnedness and early vigor. Polymorphism was common in varying degree for most traits, thus indicating a wide variability among these landraces. Eighty-three percent of the durum was identified as Hourani landrace, whereas 15.2 percent was identified as Safra Ma'an landrace
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