Meeting the Challenge of Yellow Rust in Cereal Crops - ICARDA

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22 Table 1. Yellow rust differentials, cultivars and their responses in the four main regions in two cropping season 2001/2 and 2002/3 in Iran Differential or Cultivar Yr gene North West Central East Chinese 166 Yr1 R R R R Lee Yr7 S S S R Heines Kolben Yr2 S S S R Vilmorin 23 Yr3 R R R R Moro Yr10 R R R R Strubs Dikkopf YrSD R R R R Suwon 92/Omar YrSU R R S R Clement Yr2, Yr9+ R R R R Hybrid 46 Yr4 R R R R Reichersberg 42 Yr7+ R R R R Heines Peko Yr2, Yr6+ R R R R Nord Desprez YrND R R R R Compair Yr8+ R R R R Carstens V YrCV R R R R Spalding Prolific YrSP R R R R Heines VII Yr2+ R R R R Triticum spelta var. album Yr5 R R R R Anza YrA+ R R S R Jupateco "73R" Yr18 R R R R Jupateco "73S" S S S S Avocet "R" YrA S S S S Avocet "S" S S S S Kalyansona Yr2 S R S R Federation *4/Kavkaz Yr9 S S S R Federation S S S S Trident (= Spear*4/VPM1) S R R R TP 981 S R S R TP 1295 Yr25 S S S S Meering + Yr24 Yr24 R R R R Meering S R S R Yr1/6*Avocet "S" Yr1 R R R R Yr5/6*Avocet "S" Yr5 R R R R Yr6/6*Avocet "S" Yr6 S S S S Yr7/6*Avocet "S" Yr7 S S S S Yr8/6*Avocet "S" Yr8 R R R R Yr9/6*Avocet "S" Yr9 S S S S Yr10/6*Avocet "S" Yr10 R R R R Yr15/6*Avocet "S" Yr15 R R R R Yr17/6*Avocet "S" Yr17 R R S R Yr18/6*Avocet "S" Yr18 R R R R YrSP/6*Avocet "S" YrSP R R R R YrSK/6*Avocet "S" Yr27 R R R R Avocet "R" YrA S S S S Avocet "S" S S S S KEY: R = Resistant; S = Susceptible.
23 Results and discussion In the two years of study, yellow rust developed in most nurseries. The results are summarized for four main regions (West, North, East and Central) of Iran, and presented in Table 1. According to the results, virulence on Heines Kolben (with gene Yr2), Kalyansona (Yr2), Lee (Yr7), Avocet R (YrA), Federation*4/Kavkaz (Yr9), Yr6/6*Avocet “S”, Yr7/6*Avocet “S”, Yr9/6*Avocet “S”, Yr17/6*Avocet “S” and TP 1295(Yr25) and YrSU was common during those two years (Table 1). The frequencies of virulence on plants with Yr2, Yr6, Yr7, Yr9 and YrA were up to 70%. Virulence for Yr1 was common in Central Asia and China, rare in most parts of the Middle East and absent in Iran (Afshari, unpublished). No virulence was observed on plant with Yr1, Yr3, Yr4, Yr5, Yr8, Yr10, Yr15, Yr18, Yr24, YrND, YrCV, YrSP or YrSK(27) genes in our trap nurseries. Ma and Singh (1996) noted that Yr18 might not provide adequate protection when deployed alone in a susceptible background. According to them, the preferred option for achieving durable stripe rust control is to have combinations of adult plant resistance (APR) genes giving protection approaching the levels of the most effective seedling resistance genes. The varieties with the Yr18 gene have remained resistant in Iran and the gene is being used in the breeding programme in combination with other resistance sources to obtain acceptable levels of resistance in new cultivars. Virulence for Yr27 (Selkirk gene) was not reported from trap nurseries, but virulence for this gene appeared in farmer's fields and was confirmed by seedling tests in the greenhouse (Afshari, Torabi and Malihipour, 2004). Moreover, the population of this pathotype is still limited. Virulence surveys of pathogen populations have provided valuable information during last 10 years and have been used in our breeding programmes.
Page 1 and 2: Meeting the Challenge of Yellow Rus
Page 3 and 4: iii Foreword Wheat is grown on roug
Page 5 and 6: v Preface The Central and West Asia
Page 7 and 8: vii About this publication This vol
Page 9 and 10: ix 2nd Regional Yellow Rust Confere
Page 11: Meeting the Challenge of Yellow Rus
Page 14 and 15: 4 Epidemiology of wheat yellow rust
Page 16 and 17: 6 Prevalent yellow rust pathotypes
Page 18 and 19: 8 Pakistan Dr Badaruddin Soomro, PA
Page 20 and 21: 10 Dr Naeem Ahmad, Wheat Research I
Page 23 and 24: Yellow rust of wheat in Nepal: an o
Page 25 and 26: inoculum originating from infected
Page 27 and 28: 17 Control Efforts were made to dev
Page 29 and 30: Karki, C.B. 1994. Genetics of rust
Page 31: No virulence was observed on plants
Page 35 and 36: Virulence to yellow rust resistance
Page 37 and 38: and Yr27, the seedling data may not
Page 39 and 40: Yield evaluations of the PBW 343- a
Page 41 and 42: variation for yellow rust resistanc
Page 43 and 44: A number of Kauz-derived cvs, e.g.
Page 45 and 46: Kisana, S.N., Mujahid, Y.M. & Musta
Page 47 and 48: 37 Material and methods Wheat nurse
Page 49 and 50: Challenge of a new race of Puccinia
Page 51 and 52: 41 Table 1. Response of the yellow
Page 53 and 54: 43 Occurrence and importance of yel
Page 55 and 56: To better explain the differences i
Page 57 and 58: Weather data were taken from the ne
Page 59 and 60: Disease progress stopped, in genera
Page 61 and 62: Roelfs, A.P. 1985. Epidemiology in
Page 63 and 64: The wheat stripe rust pathogen over
Page 65 and 66: 55 6E150A+ 4E8A+ 6E130A+ 130E2A+ 6E
Page 67 and 68: Agriculture-guided evolution of pat
Page 69 and 70: Yr SD, Yr SU and YrA was observed.
Page 71 and 72: The data presented in Table 3 show
Page 73 and 74: Kirmani, M.A.S. 1980. Comparative e
Page 75 and 76: ust infection at the CIMMYT station
Page 77 and 78: 67 Table 1. Estimation of the numbe
Page 79 and 80: Resistance to stripe rust disease o
Page 81 and 82: may be from the Aegilops parent as
Page 83 and 84:
McNeal, F.H., Konzak, C.F., Smith,
Page 85 and 86:
Disease severity (percentage of rus
Page 87 and 88:
77 Table 2. Genetic analysis of res
Page 89 and 90:
Defence mechanisms against rust, an
Page 91 and 92:
for the biosynthesis of a large num
Page 93 and 94:
components of the signalling pathwa
Page 95 and 96:
Xing, T., Wang, X.J., Malik, K. & M
Page 97 and 98:
provided for final decision regardi
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spreader, cv. Morocco. The data was
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91 Table 4A. Entries included in Na
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93 Table 5A. Entries in the Nationa
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95 References Ahmad, S., Rodriguez,
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Yellow rust (YR) is one of the most
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99 Table 1. Yellow rust reaction of
Page 111 and 112:
101 100 90 80 CHECKS IW IWWIP CAC E
Page 113 and 114:
• To investigate the effectivenes
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105 Figure 1. Locations of yellow r
Page 117 and 118:
Table 2. Terminal reaction of diffe
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Isogenic lines possessing Yr9 and Y
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Inqilab 91 at Nowshera, Swabi and M
Page 123 and 124:
Selection of yellow rust-resistant
Page 125 and 126:
These genotypes—depending on the
Page 127 and 128:
Reaction of some international whea
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nurseries were irrigated with mist
Page 131 and 132:
Name Pedigree Source 23 Tevee'S'//B
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Name Pedigree Source 71 NS732/HER S
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Name Pedigree Source 41 Gcn/4/D68-1
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127 Role of yellow rust-resistance
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genes, such as with Yr6 in cultivar
Page 141:
Dubin, H.J., Johnson, R. & Stubbs,
Page 144 and 145:
134 Yellow rust of wheat in Ethiopi
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136 Virulence of stripe rust on dif
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138 Turkey, Lebanon and Syria. Race
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140 Evaluation of seedling and adul
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142 of resistance not only to yello
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144 Yellow rust reaction, disease d
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146
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148 Outputs of the ten years of eva
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150 Characterization of resistance
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152 Results of testing winter wheat
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154 Dr Valentina Ibragimoval, Kyrgy
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156 Surveys of yellow rust populati
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158 nurseries. ICARDA, at its headq
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160 Table 2. Yellow rust differenti
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162 Table 4. Selected elite cultiva
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164 Table 7 shows the relative effe
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166 Table 8. Field reaction of whea
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168 Syria, Lebanon, Iran and Turkey
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170 Regional Conference on Yellow R
Page 182 and 183:
172 moderate and high levels of res
Page 184 and 185:
174 Umanka. The same disease reacti
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176 genes Yr1, Yr2, Yr6, Yr7, Yr8 a
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178 Table 3. Resistance to yellow r
Page 190 and 191:
180 Monitoring bread wheat genotype
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182 3000 masl. Susceptible check cv
Page 194 and 195:
184 Table3. Disease severity and re
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186 with great effect, particularly
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188 Conclusion Relatively old bread
Page 201 and 202:
191 Abstracts of other papers prese
Page 203 and 204:
193 Global perspectives in wheat ye
Page 205 and 206:
195 Yellow rust in Central and West
Page 207 and 208:
197 Outputs of the ten-year evaluat
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199 Yellow rust resistance of bread
Page 211 and 212:
201 Influence of weather conditions
Page 213 and 214:
203 Virulent pathotypes of yellow r
Page 215 and 216:
associated with a greater yielding
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een based on a single major gene or
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209 Monitoring stripe [yellow] rust
Page 221 and 222:
211 Pathotype and molecular variabi
Page 223 and 224:
Functional analysis of yellow rust
Page 225 and 226:
215 Study on resistance reaction of
Page 227 and 228:
217 Resistance of International Win
Page 229 and 230:
219 Researching the influence of an
Page 231 and 232:
Australian pathotypes of Puccinia s
Page 233 and 234:
and cultural practices have been ad
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225 Development of a detached leaf
Page 237 and 238:
227 Virulence variation of Puccinia
Page 239 and 240:
intervals and also as the border of
Page 241 and 242:
231 Virus-induced gene silencing in
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233 Inheritance of resistance to ye
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generated from monogenically segreg
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• slow-rusting genes: Yr9, Yr12,
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239 Meeting the Challenge of Yellow
Page 251 and 252:
241 Contents List of participants i
Page 253 and 254:
Resistance response of promising wh
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Constructing physical and genomic m
Page 257 and 258:
Inheritance of yellow rust resistan
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249 Algeria List of participants Dr
Page 261 and 262:
Tajikistan Prof. Dr Hafiz Muminjano
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Identification of effective and dur
Page 265 and 266:
For each resistant genotype (Table
Page 267 and 268:
257 Figure 1. AUDPC of ineffective
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259 Figure 3. AUDPC of susceptible
Page 271 and 272:
Among the wheat lines tested, 51% c
Page 273 and 274:
263 Introduction Wheat (Triticum ae
Page 275 and 276:
wheat germplasm lines from were tes
Page 277 and 278:
An analysis of the 2009 epidemic of
Page 279 and 280:
Overall yield loss estimation A gen
Page 281 and 282:
271 Table 4a. Monthly mean temperat
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Further studies on Yr9 virulent pat
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evaluation, these varieties were ha
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277 Table 1. Genotype response to p
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may result in losses of up to 70% i
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Table 1A. Wheat yellow rust scenari
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283 Table 1C. Wheat yellow rust sce
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285 No. Cultivar/Yr genes Yellow ru
Page 297 and 298:
Roelfs, A.P., Singh. R.P. & Saari,
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289 Materials and methods This stud
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ineffective (Yahyaoui et al., 2004)
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Combining high yield potential and
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Breeding for yellow rust-resistant
Page 307 and 308:
It is evident from Table 3 that Lu2
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299 Table 4. Rust reactions in hot-
Page 311 and 312:
Evaluation of Indian wheat genotype
Page 313 and 314:
components individually is quite la
Page 315 and 316:
305 Table 1. Grouping of AVT-2nd ye
Page 317 and 318:
Effective and ineffective resistanc
Page 319 and 320:
seedling resistance and adult plant
Page 321 and 322:
The cultivars expressing an infecti
Page 323 and 324:
New approaches in traditional resis
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(resistant × resistant); susceptib
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twice that of resistant ones. When
Page 329 and 330:
nurseries from Oklahoma University
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321 Figure 1. Map of the Republic o
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323 % 90 80 70 60 50 40 30 20 10 0
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In comparison with the local variet
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327 Introduction Wheat (Triticum ae
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Virulence and avirulence factors of
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(Peterson, Campbell and Hannah, 194
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333 No. Genotype Gene(s) Severity a
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An overview of results of five year
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combinations of adult plant resista
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Sources of resistance to wheat stri
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APR. A spectacular example was the
Page 353 and 354:
In our breeding programme we are lo
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345 Introduction Stripe Rust of whe
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Table 1. Adult plant infection type
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Dehghani, H., Moghadam, M.R., Ghann
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species in the region determined th
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353 Table 4. The materials tested f
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Breeding for resistance to rust dis
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diseases, powdery mildew, sunn pest
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359 References Dzhunusova, M., Yahy
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high yielding widely grown cultivar
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susceptible to susceptible in 2007,
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Of the yellow rust samples collecte
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367 Abstracts of other papers prese
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369 Monitoring pathogen dynamics in
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1980s. Occurrence of virulence for
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373 Race changes of Puccinia striif
Page 385 and 386:
375 High-temperature, adult-plant (
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types with race Pst-3 than with Pst
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379 Investigation of genetic resist
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381 Gene sequencing reveals heterok
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383 Molecular characterization of w
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papillae, cell wall appositions and
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infection are obtained through arti
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2000 masl; Ae. cylindrica is locate
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391 Reaction of winter facultative
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393 Yellow rust in the south of Ukr
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395 Study of diverse winter wheat g
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397 Yellow rust epidemics and virul
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399 Wheat yellow rust situation in
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401 Inheritance of yellow rust resi
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infection of the pathogen for four
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Club and other susceptible wheat cv
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407 Selection of wheat cultivars fo
Page 419 and 420:
conditions. In 2006 and 2008, due t
Page 421 and 422:
411 Regulation of development of ye
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Meeting the Challenge of Yellow Rust in Cereal Crops - ICARDA

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