Diversity analysis of <Emphasis Type="Italic">Aegilops</Emphasis> species from Morocco using RAPD markers     

B. Belkadi  N. Assali  A. Filali-Maltouf  O. Benlhabib 《Genetic Resources and Crop Evolution》2011,58(2):271-282

The diversity of 51 representative populations of the 5 Aegilops species from Moroccan collection was analyzed using 22 RAPD primers. We investigated the associations among these 5 Aegilops species (A. geniculata Roth (UUMM), A. triuncialis L. (UUCC), A. ventricosa Tausch (DDNN), A. peregrina (Hackel) Maire et Weiller (UUMM) and A. neglecta Req. ex Bert. subsp. recta (Zhuk.) K. Hammer (UUMMNN)); some diploid species considered as their ancestors; accessions of some neighboring countries and also accessions of Triticums. A total of 650 polymorphic RAPD fragments were amplified. A dendrogram was constructed using the un-weighed pair group method arithmetic average (UPGMA) and Jaccard`s similarity coefficient. The UPGMA clustering showed a regrouping to the level species with high level of the structuration of the diversity at A. geniculata. We confirm as reported by other authors, the proximity of N genome to U genome and C genome to M genome and also the difference between the genomes M and N. Thus, the phylogeny between the species and the different genomes were retracted.  相似文献   

Identification in Aegilops species of resistant sources to Hessian fly (Diptera: Cecidomyiidae) in Morocco   总被引：1，自引：0，他引：1  

M. El Bouhssini  O. Benlhabib  M.M. Nachit  A. Houari  A. Bentika  N. Nsarellah  S. Lhaloui 《Genetic Resources and Crop Evolution》1998,45(4):343-345

Hessian fly, Mayetiola destructor (Say), is the major insect pest of wheat in Morocco. Host plant resistance has been the most effective and practical method of controlling this pest. When 347 accessions of Aegilops species were screened in the greenhouse for resistance to Hessian fly, several accessions of Ae. geniculata Roth, Ae. triuncialis L., Ae. neglecta Req.ex Bertol., Ae. ventricosa Tausch, Ae. cylindrica Host and Ae. markgrafii (Greuter) Hammer showed resistance reaction. All expressed antibiosis as the mechanism of resistance against first instar Hessian fly larvae. These Aegilops sources of resistance could be exploited for transferring Hessian fly resistance to wheat.  相似文献   

Sources of resistance to Mayetiola Destructor in breadwheat and durum wheat in Morocco     

Lynn W. Gallagher  Abderrahim Benyassine  Ouafae Benlhabib  Mohamed Obanni 《Euphytica》1987,36(2):591-602

Summary Grain yield reductions of both breadwheat (Triticum aestivum L.) and durum wheat (Triticum turgidum L. var. durum) caused by attacks of Hessian fly (Mayetiola destructor Say) are second perhaps only to those caused by inadequate soil moisture in Morocco. To identify effective sources of resistance, 817 entries of common wheat and durum wheat reported to be resistant to Hessian fly were evaluated under natural infestations in Morocco. A large number of genes conferring virulence are present in populations of Moroccan Mayetiola. The genes H₁, H₂, H₃, h₄, H₆, H₇, H₈, H₉, H₁₀, H₁₁, H₁₄, H₁₅, and H₁₆ as well as the Marquillo, Kawvale and PI 94587 resistance sources are not useful for cereal improvement in North Africa. Luso, which has the gene H₁₂, also appeared susceptible in limited testing. Genotypes having the genes H₅ and H₁₃ were identified as significantly reducing larval survial in natural populations of Mayetiola. Of 11 resistant breadwheats identified with unknown genes, seven were from Portugal and three were from the Soviet Union. Although none of the durums tested had high levels of reistance, the two most promising durums were from Portugal. It is proposed that initially H₅ be deployed in durum wheats and H₁₃ be used in common wheat improvement. Leaf pubescence appears of little use in reducing the larval survival of Mayetiola.  相似文献   

Effects of Deficit Irrigation and Fertilization on Quinoa (Chenopodium quinoa Willd.) Water Status and Yield Productions     

Fghire  Rachid  Anaya  Fatima  Issa Ali  Oudou  Lamnai  Kamal  Foughali  Boubaker  Faghire  Mustapha  Benlhabib  Ouafae  Wahbi  Said 《Gesunde Pflanzen》2022,74(1):97-110

Worldwide population is in permanent growth, leading to an over-presser on the food resources. This demand leads to an over-exploitation of land and water resources. Recently, the quinoa plant has attracted attention as alternative crop with high nutritive value and high tolerance to the marginal conditions. In this study, a field experiment was conducted during two successive seasons to investigate the effect of deficit irrigation on the agronomic performance. Four treatments of deficit irrigation (100%, 50%, 33% ETc and rainfed) were applied to one variety in the first season and to four genotypes (two varieties and two lines). The results were evaluated by measuring biomass and seed quinoa yield, water-use efficiency, harvest index, seed size and 1000 seeds weight. Results show that the implementation of deficit irrigation is an appropriate strategy to reduce the use of agricultural water and maintain relatively high yields. On the other hand, the results of the economic quality reflected by the size and weight of seed yield, indicates that quinoa can be considered a well-adapted to the conditions of water scarcity culture. According to agronomic parameters, L143 line followed by the line L11 showed a high potential of adaptation under the different treatments of stress, while the “Puno” variety presented the best performance under the favorable conditions of irrigation (100% ETc).

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