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Articles
by
M. El Mahjoub |
Total Records (
2 ) for
M. El Mahjoub |
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M. Daami-Remadi
,
F. Ayed,
,
H. Jabnoun-Khiareddine
,
K. Hibar
and
M. El Mahjoub
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Comparative susceptibility of local potato cultivars to Fusarium graminearum, F. sambucinum, F. solani and F. oxysporum f.sp. tuberosi, causing tuber dry rot is investigated in the current study for the first time in Tunisia. Obtained results revealed that these Fusarium species showed variable aggressivity upon the 11 tested potato cultivars. In fact, F. graminearum was the most aggressive on the majority of cultivars; F. sambucinum, F. solani and F. oxysporum f.sp. tuberosi, showed a comparable aggressivity on some used cultivars. After 21 days of incubation at 25-27°C, all inoculated tubers of all cultivars showed dry rot symptoms with different degree revealing that cultivars resistance was distinct against F. oxysporum f.sp. tuberosi, F sambucinum, F. graminearum and F. solani. Furthermore, no cultivars were completely resistant to the whole Fusarium complex and only some cultivars showed a lesser susceptibility to at least two species this is the case for Mondial and Spunta against F. sambucinum and F. oxysporum f.sp. tuberosi and the case of Liseta against F. graminearum and F. oxysporum. |
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N. Boughalleb
,
N. Tarchoun
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A. El Mbarki
and
M. El Mahjoub
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From 3 watermelon cultivars Sentinel, Charleston Gray and Sugar Pack tested against some Tunisian isolates of Fusarium solani f. sp. cucurbitae and Fusarium oxysporum f. sp. niveum, Sugar Pack revealed to be the most susceptible cultivar and was used for grafting to evaluate the resistance of 9 cucurbit rootstocks. Strong toza, TZ148, Emphasis, Polifemo and Ercole were resistant to highly resistant to five Fusarium isolates tested. Rootstocks of Ferro RZ, Macis and S.Camel showed a partial resistance to some isolates of Fsc and Fon. Achille revealed to be highly resistant to Fsc, but susceptible to some isolates of Fon. Seedlings grafted Strong toza x Sugar Pack, TZ 148 x Sugar Pack, Emphasis x Sugar Pack, Achille x Sugar Pack and Ercole x Sugar Pack were resistant to Fsc and Fon isolates. These rootstocks could be used in grafting of watermelon to resolve the problem of two Fusarium species affecting watermelon. |
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