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Articles by Hussein Migdadi
Total Records ( 2 ) for Hussein Migdadi
  Mahmoud AL-Khatib , Mohammad Brake , Muien Qaryouti , Khalaf Alhussaen and Hussein Migdadi
  This study was conducted under green house conditions during summer growing seasons 2010 and 2011, to evaluate the response of 21 Jordanian tomato land races (accessions) against the vascular wilt fungus Fusarium oxysporum f.sp. lycopersici. Accessions were provided by the National Center for Agricultural Research and Extension (NCARE). Inoculation with the fungus was carried out by using the root dip method. Parameters considered in this study were discoloration, yellowing and fresh weight. Both discoloration and yellowing were measured, recorded according to 1-5 scale and their results ranged from 1-3.5, while fresh weight ranged from 33.1-76.5 g for treatments compared with 41.0-98.8 g for controls. Nine out of 21 studied tomato accessions were significantly different from other accessions and appeared to be resistant to the fungus under experimental conditions according to the 1-5 scale. Most of the resistant accessions were from the slow growing lines, while most of the fast growing accessions were susceptible. The study concluded that resistant accessions are promising ones to be used as root stocks for cultivated tomato varieties.
  Aida Al-Nashash , Hussein Migdadi , Mohamad A. Shatnawi , Hani Saoub and Sameer Masoud
  A field study was carried to assess phenotypic 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 average, explained 89.1% of the total variation and shows that spike weight, grain yield/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.
 
 
 
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