WoS İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12514/3595

Browse

Browsing WoS İndeksli Yayınlar Koleksiyonu by Institution Author "Aktaş, Hüsnü"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • Thumbnail Image
    Article
    Citation - WoS: 3
    Citation - Scopus: 3
    Stripe Rust Partial Resistance Increases Spring Bread Wheat Yield in South-eastern Anatolia, Turkey
    (WILEY-BLACKWELL, 2016) Aktaş, Hüsnü; Zencirci, Nusret
    Stripe rust caused by Puccinia striiformis f.sp. tritici is the most serious disease of wheat globally including south-eastern Anatolia of Turkey, where wheat originated. In this study, 12 spring wheat genotypes were artificially inoculated and preserved in two locations, Diyarbakr and Adyaman, during the 2011-2012 season to investigate loss in yield and yield components. Genotypes were evaluated at the adult plant stage using two partial resistance parameters: final disease severity and area under the disease progress curve (AUDPC). AUDPC ranged from 14.8 to 860 in Diyarbakr, and 74 to 760 in Adyaman. Yield loss ranged from 0.6 to 68.5% in Diyarbakr and 9.8 to 56.8% in Adyaman. Genotypes G1, G5, G7 and G8 were found to lose less yield, while higher yield loss was observed in G3, G4 (Nurkent), G5 and G9 (Karacada-98). The highest loss in thousand kernel weight was observed in a susceptible cultivar Karacada-98 in Diyarbakr followed by 43.4 and 24.4% in Adyaman. Test weight loss reached 8.89% in Diyarbakr and 20.8% in Adyaman. Yield loss and AUDPC had a positive significant relationship. Based on the values of AUDPC, final disease severity and yield loss, three major clusters were formed for 12 wheat genotypes. Partially resistant genotypes were found to lose less grain yield and seemed to be stronger against severe stripe rust pressure.
  • Thumbnail Image
    Article
    Citation - WoS: 16
    Citation - Scopus: 22
    Stripe rust resistance gene Yr15 in Turkish and Kazakhstan wheat germplasms and the potential of Turkish wild emmer for stripe rust breeding
    (Institute for Ionics, 2023) Baloch, Faheem Shehzad; Ali, Amjad; Tajibayev, Daniyar; Nadeem, Muhammad Azhar; Ölmez, Fatih; Aktaş, Hüsnü; Alsaleh, Ahmad; Cömertpay, Gönül; İmren, Mustafa
    Puccinia striiformis f. sp. tritici (Pst) is a devastating obligate fungal biotroph that causes stripe rust disease in wheat in temperate and cooler regions, especially in Kazakhstan and Turkey. Chemical control of Pst is not a sustainable or economic strategy in these countries. Therefore, a suitable alternative to these pesticides, such as the development of resistant wheat cultivars, is needed. During the present investigation, a large set of wheat germplasms was characterized to determine the presence of the broad-spectrum resistance Yr15 gene using Y15K1_F2/uhw30_1R primers. This collection contained 360 accessions including 233 durum and bread wheat collected from KASIB cultivars and advanced lines that were developed by eight breeding programs within the Kazakhstan-Siberia Wheat Improvement Network and Turkey, and 127 wild emmer collected from Turkey only. The positive control was wild emmer IDs WEW 83-1, WEW 84-1, and WEW-85, which previously showed positive amplification of the Yr15 gene with these primers. Yr15, a broad-spectrum R-gene derived from wild emmer wheat encoding a putative kinase-pseudokinase protein designated as wheat tandem kinase 1, comprises a unique R-gene structure in wheat against the yellow (stripe) rust. None of the tested cultivated wheat germplasms from 174 durum wheat of the KASIB Network or 59 of bread wheat from Turkey showed positive amplification, but 89 of 127 (70.07%) wild Triticum dicoccoides showed positive amplification. The collection from the Karacadağ regions showed the maximum number of genotypes (46) with positive amplification for Yr15, followed by Eruh (10), Şırnak (5), Malazgir-Tunceli (4), Tunceli (4), Şırnak-Uludere yol (3), Tunceli-Pülümür (3), and Karacadağ/Kerteş Köyü –Siverek (3). We conclude that wild wheat cultivars are a good source of the Yr15 gene and that introgression of this gene into the cultivated wheat germplasm of both countries should be performed to manage the Pst pathogen in the future