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Details van artikel 2 van 44 gevonden artikelen
| Titel: |
Assessment of Phenotypic Diversity among Jordanian Barely Landraces(Hordeum vulgare L.) |
| Auteur: |
Aida Al-Nashash Hussein Migdadi Mohamad A. Shatnawi Hani Saoub Sameer Masoud |
| Verschenen in: |
Biotechnology |
| Paginering: | Jaargang 6 (2007) nr. 2 pagina's 232-238 |
| Jaar: |
2007 |
| Inhoud: |
A field study was carried to assess phentypic variation for 32 barely landraces in Jordan collected from two divese environments. Three long-term checks: Harmal, Zanbaka and Arta were also used in this study. Triple lattice design with three replications was used. Half of the collected barely landraces were six-row type that dominated in Ajlun area (favorable environments) and the remaining landraces were two-row type that dominated in Muwaqqar area (dry environment). This reflects the expected landrace adaptability to the stressful climatic conditions. The phenotypic variation exhibited by the landraces for 13 quantitative traits indicated that these landraces are heterogeneous populations to various degrees for most desirable agronomic traits, except for growth habit and early growth vigor that were monomorphic. Considering all traits, the average diversity index (H`) for the collected landraces was 0.71?0.05. Similarity indices using Euclidean distances ranged from 0.99 to 0.60 with an average of 0.81. Wide range of similarity confirmed the high level of phenotypic polymorphism. Collected landraces were completely separated into two main clusters according to the row types and the collection sites. The first canonical variable, on avarage, explained 89.1% of the total variation and shows that spike weight, grain yeid/plant and grains/spikelets are the major discriminating coefficient among clusters. Jordanian barely landraces have higher level of diversity in desirable traits that can be exploited in breeding programs. |
| Uitgever: |
Asian Network for Scientific Information, Pakistan (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 44 gevonden artikelen
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