Prof. Ali Abd El-Maksoud El-Hosary :: Publications:

Authors: A.A. El Hosary, S.A. Sedhom, M. M. El-Hady, S.M. Attia and E.H. El-Harty
Year: 2006
Keywords: Not Available
Journal: Not Available
Volume: Not Available
Issue: Not Available
Pages: Not Available
Publisher: Not Available
Local/International: International
Paper Link: Not Available
Full paper Ali Abd El-Maksoud El-Hosary_Doc2.pdf
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Twenty five faba bean (Vicia faith L) genotypes were used in thisstudy. The field experiments were conducted during 2000/0 1, 200 1/02 and 2002103 seasons at three locations i.e. two experiments under naturally heavily infested soil with Orobanche (sick plots) at (liza and Sida Agricultural Research Stations in addition to Orohanche-free one at Skis Station. ARC. The pooled analysis indicated the genotype, environment and genotype X environment interactions mean squares were highly significant ard the highly significant of pooled deviation for number of pods, seeds and seed yield/plant, indicated that the major components dilhrences for stability were due to deviation from the linear function. It was concluded from the data that Faba bean new lines i.e. 843/41/2000, 843/I 90/2(H)0, Miar 1/116/2000, Misr 1/12112000, Misr 1/122/2000 and Miar 1/139/2000 arc genetically average stable, also these genotypes gave highest mean values for all traits and significantly more than their original cultivars. ،NTROI)1JCTION Faba bean (Vicia faba L.) is an important crop which can be used as pulse, vegetable, fodder, green manure and as a cover crop. Faba bean crop is essential in farming system tu increase soil fertility where it is an important protein supplier to the soil. Broomrape (Cfrohanche crenala Forak.) is obligate hub root parasite. This parasite is one of the major constraints to faba bean production in the Mediterranean basin. The losses in faba bean seed yield due to broomrapcs infection in Mediterranean area were 5 — 33 % in Egypt, 50 — 100% in Malta, 12 — 63% in Morocco and 30 — 70% in Turkey as reported by Sauerborn and S.xcn 1986. In Beni-Suef and Istnailia Governorates MuIIcr-Staer et aI. j 1999) found that half of the interviewed farmers cnncdered Qrohanche to he a problem on their farmers. Producing varieties with htgh yielding ability has always been the first and the foremost among plant breeders objectives hut, such high yielding varieties have to be characterized by relative resistance to biotic and abiotc stress, hence, the genotypic stability for seed yield is predominant importance in faba bean especially when genotypes are tested over a series f environments, locations and years. Genotype X environment interaction play a significant role in the phcnoiypic performance of a variety and in the success of any breeding programmes for the development of genetic stocks adapted to wide range geographical areas. Comstock and Molt (1963) have shown statistically the effect of large genotype X environment interactions in reducing progress from selection. [o overcome this problem, there are two possible strategies for plant breeder to develop varieties showing low genotype X eiwiromnent interaction, iiamcly (a) the subdivision of heterogeneous area, for which the varieties are being bred. ‘into smaller regions, each of them has a more homogenous environment and its own characteristic varieties, and (b) the introduction of varieties which show a high degree of stability in performance over a wide range of environments. The first strategy is not likely to be very effective since large interactions of genotypes with locations could still exist even in a subregion

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