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JAST 2000, 2(1): 41-47 |
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Elahinia S A. Assessment of Urediniospore Germination of Puccinia
striiformis at Various Temperatures on Agar and
Detached Leaves of Wheat. JAST 2000; 2 (1) :41-47
URL: http://jast.modares.ac.ir/article-23-7034-en.html
URL: http://jast.modares.ac.ir/article-23-7034-en.html
College of Agricultural Sciences, University of Guilan. Rasht, Islamic Republic of Iran.
Abstract: (5731 Views)
The percentage of urediniospore germination of two isolates of yellow rust {Puccinia
striiformis f. sp. tritici) namely, WYR 69/10 |Race 104E 137(1)] and isolate WYR 79/4
|Race 41E 139 (4)], was studied at various temperatues between 5-20°C on agar and
the adaxial surface of detached leaves on a layer of benzimidazole agar. Four
replicates for five temperature treatments were arranged as a preliminary
investigation to find the most appropriate temperature for the subsequent comparison
of spore germination on the host material under investigation. Mean percentage
values were analysed separately and the levels of urediniospore germination at
different temperatures were compared using analysis of variance and Student-
Newman-Keuls techniques. Spore germination of both isolates was high over the
temperature range 5-10°C, but dropped significantly at 15-20°C . At the cooler
temperatures 5° , 7.5° and 10°C , isolate WYR 69/10 consistently germinated at a
higher level than isolate WYR 79/4 , whereas at 20°C, the latter isolate gave the
highest figures. This observation indicates that both isolates germinated most
effectively at 10°C on agar and detached leaves.
Received: 2010/03/15 | Accepted: 2010/03/15 | Published: 2010/03/15
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