The evaluation of salicylic acid effect on septoriosis disease by Mycospharella graminicola
Subject Areas : دو فصلنامه تحقیقات بیماریهای گیاهی
جلال Gholamnejad
1
(دانشجوی دورۀ دکتری بیماریشناسی گیاهی، دانشگاه تربیت مدرس، تهران، ایران)
ابراهیم Mohammadi Goltapeh
2
(استاد گروه بیماری شناسی گیاهی، دانشکده کشاورزی، دانشگاه تربیت مدرس تهران، ایران)
فروغ Sanjarian
3
(دانشیار گروه بیماری شناسی گیاهی، دانشکده کشاورزی، دانشگاه تربیت مدرس تهران، ایران)
ناصر Safaie
4
(استادیار پژوهشگاه ملی مهندسی ژنتیک و زیست فناوری، تهران، ایران)
K.H Razavi
5
(دانشیار گروه بیماری شناسی گیاهی، دانشکده کشاورزی، دانشگاه تربیت مدرس تهران، ایران)
Keywords: Salicylic acid, Mycosphaerella graminicola, Disease evaluation, Seed treatment,
Abstract :
In this study, the effect of salicylic acid (SA) on response of wheat cultivars (2
susceptible and 2 resistant cvs.) to Septoria was evaluated. The SA was used in two methods;
it was sprayed on the wheat leaves and/or the seeds were drenched in SA solution. Two
isolate of Mycosphaerella graminicola S1 and K8 were used in this study. The pathogenicity
of isolate S1 was more than K8; therefore this isolate was selected for further experiments. In
the test of evaluation disease interaction with SA, Zagrus cultivar showed the least disease
severity (41%) at 4 mM SA level, and Atrak cultivar was showed the most disease severity in
0.5 mM SA level, 81%. Four densities of SA were used for seed treatment (0, 0.5, 1 and
2mM), the maximum controlling of disease was achieved at 1mM level of SA. The results of
this study suggest the best concentration for spraying on wheat leaves is 2 mM of SA, and 1
mM is the best concentration for seed treatment.
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