A seven-year assessment of resistance durability to yellow rust in some wheat cultivars in Ardabil province, Iran

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SAFAVI SAFAR ALI; AFSHARI FARZAD

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Journal: JOURNAL OF CROP PROTECTION Year:2017 | Volume:6 | Issue:3 Page(s): 409-421

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Title

A seven-year assessment of resistance durability to yellow rust in some wheat cultivars in Ardabil province, Iran

Author(s)

SAFAVI SAFAR ALI | AFSHARI FARZAD | Issue Writer Certificate

Keywords

Wheat cultivarsQ2

durable resistanceQ2

yellow rustQ1

Puccinia striiformis f.sp.triticiQ1

Abstract

Yellow (stripe) rust caused by Puccinia striiformis f. sp. tritici is an important disease that threatens wheat production where the weather conditions are congenial and susceptible cultivars are present. Host resistance is the most economical and environmentally safe control method to manage wheat yellow rust; and slow rusting resistance, a kind of quantitative resistance, has been reported to have more durability. We planned an experiment aimed to evaluate resistance durability to yellow rust in some Wheat cultivars. This study was conducted in field plots under natural infection conditions against race(s) populations of stripe rust believed to have virulence against Yr2, Yr6, Yr7, Yr8, Yr9, Yr10, Yr17, Yr18, Yr21, Yr22, Yr23, Yr24, Yr25, Yr26, Yr27, Yr31, Yr32, YrA and YrSU resistance genes. Slow rusting parameters, including final rust severity (FRS), apparent infection rate (r), relative area under disease progress curve (rAUDPC), and coefficient of infection (CI) were evaluated in a set of 50 wheat genotypes along with susceptible control during a seven-year study from 2008 to 2014. Seedling reaction was also evaluated under field conditions. Based on evaluated resistance parameters, the cultivars (entries: 34, 40-50) as well as susceptible check with the highest values of FRS, CI, r and rAUDPC, were considered as susceptible cultivars. Eight cultivars (entries: 1-7and 9) were resistant at the seedling and adult plant stages. Thirteen cultivars (entries: 13, 15, 16, 17, 20, 21, 24, 28, 29, 32, 33, 35, 37) showed resistance reaction at the seedling, but susceptible to moderate reactions at the adult plant stage. Sixteen cultivars (entries: 8 10, 11, 12, 14, 18, 19, 22, 23, 25, 26, 27, 30, 31, 38, 39) were susceptible at the seedling stage, and had moderately resistant to moderately susceptible reactions at the adult plant stage. Accordingly, these later cultivars with low level of slow rusting parameters were supposed to have gene(s) for varying degrees of slow rusting resistance or high temperature adult plant (HTAP) resistance. The remaining cultivars may have low level of slow rusting resistance that need further study to elucidate their nature of resistance. Cluster analysis of Wheat cultivars revealed four major groups/clusters, based on slow rusting resistance parameters and seedling infection types.

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APA: Copy

SAFAVI, SAFAR ALI, & AFSHARI, FARZAD. (2017). A seven-year assessment of resistance durability to yellow rust in some wheat cultivars in Ardabil province, Iran. JOURNAL OF CROP PROTECTION, 6(3 ), 409-421. SID. https://sid.ir/paper/238981/en

Vancouver: Copy

SAFAVI SAFAR ALI, AFSHARI FARZAD. A seven-year assessment of resistance durability to yellow rust in some wheat cultivars in Ardabil province, Iran. JOURNAL OF CROP PROTECTION[Internet]. 2017;6(3 ):409-421. Available from: https://sid.ir/paper/238981/en

IEEE: Copy

SAFAR ALI SAFAVI, and FARZAD AFSHARI, “A seven-year assessment of resistance durability to yellow rust in some wheat cultivars in Ardabil province, Iran,” JOURNAL OF CROP PROTECTION, vol. 6, no. 3 , pp. 409–421, 2017, [Online]. Available: https://sid.ir/paper/238981/en

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