scholarly journals Stem Rust Partial Resistance in Eight Egyptian Durum Wheat Cultivars

2017 ◽  
Vol 45 (1) ◽  
pp. 189-200
Author(s):  
Mohamed Hasan ◽  
Entsar Abbas ◽  
Wael Ghanem
Keyword(s):  
Durum Wheat ◽  
Stem Rust ◽  
Partial Resistance ◽  
Wheat Cultivars

scholarly journals Genetics of stem rust resistance in four popular durum wheat cultivars

2020 ◽  
Vol 80 (02) ◽  
Author(s):  
A. Divya ◽  
T. L. Prakasha ◽  
S. Chand ◽  
A. N. Mishra ◽  
V. G. Dubey ◽  
...  
Keyword(s):  
Durum Wheat ◽  
Resistance Genes ◽  
Stem Rust ◽  
Rust Resistance ◽  
Dominant Gene ◽  
Central India ◽  
Stem Rust Resistance ◽  
Single Dominant Gene ◽  
Wheat Cultivars ◽  
Segregation Data

A study was conducted to understand the mode of inheritance and extent of diversity of stem rust resistance in four popular durum wheat cultivars of central India viz., HI 8498 (Malav Shakti), HI 8663 (Poshan), HI 8713 (Pusa Mangal) and HI 8737 (Pusa Anmol) using Puccinia graminis tritici (Pgt) pathotypes 15-1 (123G15) and 40-3 (127G29). These cultivars were crossed with susceptible parents i.e., Motia and Malvi Local and were also crossed among themselves in half diallel fashion. The F2 and F3 segregation data revealed that a single dominant gene each controlled resistance to the pathotype 40-3 in HI 8713 and HI 8663, while two dominant genes each governed resistance to this pathotype in HI 8737 and HI 8498. A single dominant gene each conditioned resistance to the pathotype 15-1 in all the four cultivars. The F2 segregation data of the intercrosses among the resistant parents showed that three different resistance genes controlled resistance among four cultivars against each Pgt pathotype 40-3 and 15-1. These genes seem to be different from the most commonly postulated stem rust resistance genes in Indian durum wheat germplasm viz., Sr11, Sr12, Sr7b and Sr9e which are ineffective/less effective against the test pathotypes. Hence, the genes identified in the present study can be utilized in broadening the genetic base of stem rust resistance in Indian durum wheat.

scholarly journals Virulence of Egyptian Blumeria graminis f. sp. tritici Population and Response of Egyptian Wheat Cultivars

Plant Disease ◽  
2018 ◽  
Vol 102 (2) ◽  
pp. 391-397 ◽  
Author(s):  
Abdelrazek Abdelrhim ◽  
Harby M. Abd-Alla ◽  
El-Sayed Abdou ◽  
Mamdoh E. Ismail ◽  
Christina Cowger
Keyword(s):  
Powdery Mildew ◽  
Durum Wheat ◽  
Bread Wheat ◽  
Partial Resistance ◽  
Blumeria Graminis ◽  
Wheat Cultivars ◽  
The Past ◽  
The North ◽  
Commercial Cultivars ◽  
Serious Disease

Powdery mildew, caused by Blumeria graminis (DC.) Speer f. sp. tritici (Em. Marchal), is a serious disease of wheat that can cause a large reduction in yield. In Egypt, high powdery mildew severity has been observed in the past few years on many commercial cultivars of both bread and durum wheat. Little information is available about virulence characteristics of the Egyptian B. graminis f. sp. tritici population in Egypt or the resistance of Egyptian wheat cultivars to powdery mildew. Virulence frequencies of a representative sample of the Egyptian B. graminis f. sp. tritici population were studied. Seven provinces were chosen to represent the country: two in Upper Egypt (Qena and Sohag), one in Middle Egypt (El Minia), and four in the north (Alexandria, Kafr Elsheikh, Dakahlia, and Sharqia). Ten isolates from each province (70 isolates total) were derived from single ascospores and used for this study. They were inoculated individually on 21 powdery mildew differential lines, each bearing a single resistance (Pm) gene. Also, the responses of 14 Egyptian bread wheat cultivars and 6 durum cultivars to each of the 70 isolates were evaluated individually. Among all tested Pm genes, only seven (Pm1b, Pm2, Pm21, Pm34, Pm36, Pm37, and Pm53) were effective against B. graminis f. sp. tritici isolates from all provinces. Several other genes were effective against most or all isolates from a majority of provinces. All tested bread wheat cultivars showed full susceptibility to all isolates, whereas two durum wheat cultivars, Beni-Suef-5 and Beni-Suef-6, had intermediate responses to a large percentage of the isolates, likely indicating partial resistance. To enhance mildew resistance in Egyptian wheat cultivars, it is recommended to use combinations of genes that are nationally effective or effective against multiple provincial B. graminis f. sp. tritici populations.

Registration of KS91WGRC14 Stem Rust and Powdery Mildew Resistant T1BL 1RS Durum Wheat Germplasm

Crop Science ◽  
1993 ◽  
Vol 33 (1) ◽  
pp. 220-220 ◽  
Author(s):  
B. Friebe ◽  
B. S. Gill ◽  
T. S. Cox ◽  
F. J. Zeller
Keyword(s):  
Powdery Mildew ◽  
Durum Wheat ◽  
Stem Rust ◽  
Wheat Germplasm

scholarly journals Field resistance to wheat stem rust in durum wheat ( Triticum turgidum ssp. durum ) accessions deposited at the USDA National Small Grains Collection

Crop Science ◽  
2021 ◽  
Author(s):  
Pablo D. Olivera ◽  
Worku D. Bulbula ◽  
Ayele Badebo ◽  
Harold E. Bockelman ◽  
Erena A. Edae ◽  
...  
Keyword(s):  
Durum Wheat ◽  
Stem Rust ◽  
Triticum Turgidum ◽  
Field Resistance ◽  
Wheat Stem Rust ◽  
Small Grains

scholarly journals Seedling Stage Resistance of Iranian Bread Wheat Germplasm to Race Ug99 of Puccinia graminis f. sp. tritici

Plant Disease ◽  
2013 ◽  
Vol 97 (3) ◽  
pp. 387-392 ◽  
Author(s):  
Mohsen Mohammadi ◽  
Davoud Torkamaneh ◽  
Mehran Patpour
Keyword(s):  
Resistance Genes ◽  
Stem Rust ◽  
Rust Resistance ◽  
Stem Rust Resistance ◽  
Puccinia Graminis ◽  
Wheat Cultivars ◽  
Breeding Lines ◽  
Wheat Germplasm ◽  
Stem Rust Resistance Genes ◽  
Rust Resistance Genes

Following emergence of Ug99, the new virulent race of Puccinia graminis f. sp. tritici in Africa, a global effort for identification and utilization of new sources of Ug99-resistant germplasm has been undertaken. In this study, we conducted replicated experiments to evaluate the resistance of Iranian wheat germplasm to the TTKSK lineage of the Ug99 race of P. graminis f. sp. tritici. We also evaluated for presence of stem rust resistance genes (i.e., Sr2, Sr24, Sr26, Sr38, Sr39, Sr31, and Sr1RSAmigo) in wheat cultivars and breeding lines widely cultivated in Iran. Our phenotyping data revealed high levels of susceptibility to Ug99 in Iranian bread wheat germplasm. Our genotyping data revealed that Iranian cultivars do not carry Sr24, Sr26, or Sr1RSAmigo. Only a few salt-tolerant cultivars and breeding lines tested positively for Sr2, Sr31, Sr38, or Sr39 markers. In conclusion, the genetic basis for resistance to Ug99 in Iranian wheat cultivars was found to be vulnerable. Acquiring knowledge about existing resistance genes and haplotypes in wheat cultivars and breeding lines will help breeders, cereal pathologists, and policy makers to select and pyramid effective stem rust resistance genes.

Correlation of fungal penetration, CWDE activities and defense-related genes with resistance of durum wheat cultivars to Zymoseptoria tritici

2017 ◽  
Vol 100 ◽  
pp. 117-125 ◽  
Author(s):  
L. Somai-Jemmali ◽  
A. Siah ◽  
K. Harbaoui ◽  
S. Fergaoui ◽  
B. Randoux ◽  
...  
Keyword(s):  
Durum Wheat ◽  
Wheat Cultivars ◽  
Zymoseptoria Tritici

Nickel toxicity in two durum wheat cultivars differing in drought sensitivity

1996 ◽  
Vol 19 (12) ◽  
pp. 1611-1627 ◽  
Author(s):  
T. Pandolfini ◽  
R. Gabbrielli ◽  
M. Ciscato
Keyword(s):  
Durum Wheat ◽  
Wheat Cultivars ◽  
Nickel Toxicity ◽  
Drought Sensitivity
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