The Role of Total Nitrogen Content of Leaves in Temperature Sensitivity of Barley Cultivars to Puccinia hordei and Changes in Nitrogen Content Occurring During Development of the Disease
Publish Year: 1378
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JASTMO-2-1_006
تاریخ نمایه سازی: 22 آبان 1402
Abstract:
The total nitrogen content of three barley cultivars: Cehada Capa (resistant at
۲۵aC), Cl ۱۲۴۳ (resistant at ۵°C) and Rika ۱ (susceptible at all temperatures) to
Puccinia hordei was determined and compared in healthy and infected plants at ۵° and
۲۶°C. The results indicate that the total nitrogen content of cv. Cehada Capa leaves
was greater than that of Cl ۱۲۴۳ and Rika ۱ and that of Cl ۱۲۴۳ was greater than that
of Rika ۱ when plants were grown at ۲۶°C. When plants were grown at ۵°C, the
percentage of total nitrogen content of leaves of cv. Cebada Capa was significantly
greater than that of Cl ۱۲۴۳ and Rika ۱, but no differences were found between Rika
۱ and Cl ۱۲۴۳. It was concluded that the total nitrogen content has no role in the
temperature sensitivity of barley cultivars. In most cases, especially in susceptible
cultivars, the nitrogen content of infected leaves was greater than that of healthy
plants when plants were incubated at ۲۶°C, but there were no significant differences
between total nitrogen content of infected leaves and that of their healthy control
when plants were incubated at ۵°C.
Keywords:
Authors
H. R. Etcbarian
Faculty of Agricultural Science and Technology, Aboureihan Campus, Tehran University, Tehran, Islamic Republic of Iran.
F. Blackburn
Agricultural Biology Department, The University of Ncwcastle-upon-Tyne, England