Meeting the Challenge of Yellow Rust in Cereal Crops - ICARDA

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184 Table3. Disease severity and reaction of commercial cultivars to yellow rust at six locations in Ethiopia Variety Released 1995 1996 1997 1998 1999 Lakech 1970 50S 70S 60MS 50MS 60S Dereselign 1974 40MS 60S 60MS 70S 70MS Enkoy 1974 15MS Tr-MS — — 15MS K6290 BULK 1977 40MS 30MS 30MS 50MS 60MS K6295-4A 1980 30S 20MS 25MS 20MS 40S ET-13-A2 1981 10MS 20MR 15MS 10MS 30MS Pavon 76 1982 30MS 40MS 30MS 40MS 25MS Dashen 1984 1MS 20MS 50MS 40S 70MS HAR 407 1987 0 10MS 40MS 20MS 60MS HAR 416 1987 Tr-MR 10MS 0 10MS 10MS Mitike 1993 15MS Tr-MS 20MS 10MS 20MS Wabe 1994 Tr-R 10MR-R 5R-MR 60S 75S Kubsa 1994 0 Tr-MR 0 10MS 20S Galama 1995 4MS 0 Tr-MS 1MS Tr-MR Tusie 1997 0 Tr-MS 10MS 30MS 20MS Abola 1997 20MS 10MS 5MS 25S 40S Magal 1997 0 5MS 5MS 15MS — Morocco (check) 100S 100S 100S 100S 100S Lakech 1970 60S 100S 100S 70S 80S Dereselign 1974 60S 100S 100S 30S 80S Enkoy 1974 25MS 15S 50MS 50MS 15MS K6290 BULK 1977 40S 95S 90S 45S 50S K6295-4A 1980 25MS 30MS 50MS 40MS 40S ET-1- A2 1981 40S 40MS 50MS 50MS 60S Pavon 76 1982 30MS 95S 90S 40S 80S Dashen 1984 40S 80S 70S 60S 80S HAR 407 1987 15MS 20MS — 30MS 25S HAR 416 1987 10MR 15MS 40MS 30S 25S Mitike 1993 10MS 40S 40S 40MS 40S Wabe 1994 30MS 60S 80S 45S 80S Kubsa 1994 30MS 70MS 100S 70S 80S Galama 1995 0 40MS 50MS 40S 25S Tusie 1997 10MS 60MS 30MS 30S 25MS Abola 1997 30MS 70S 50S 70S 60S Magal 1997 20MS - 60S 70S 50S Morocco (check) 100S 100S 100S 100S 100S
185 Table 4. Disease severity and reaction of Ethiopian cultivars to yellow rust at six locations in Ethiopia Genotype Released 2000 2001 2002 2003 2004 2005 Katar 1999 40MS 80S 100S 60S 60S 80S Tura 1999 10MS 20MS 30MS 45S-MS 10S 20S Shinna 1999 30S 80MS 90S 80S 70S 100S Wetera 2000 15MS 50MS 90MS 80S 40S 60S Hawi 2000 15MS 40S 40MS 15S 25S 20MS Simba 2000 Tr-MS — 10MR 5MS 10S 20MS Dodota 2001 — 50MS 90MS 60S 60S 80S Sirbo 2001 — 10S 5S 10S 15S 5MS KBG-01 2001 — 20MS 40MS 40S-MS Tr-MS 30S Bobicho 2001 — — 30MS 70MS-S 30S 20S Morocco (check) 100S 100S 100S 100S 100S 100S Table 4 shows the reactions of cultivars released during 1999–2001, such as Katar, Shinna, Wetera, Dodota and Bobicho, which were becoming susceptible shortly after release. Shinna was released for the northern part of Ethiopia, which is believed to have low levels of rust epidemics compared with central and south-eastern Ethiopia, where rust epidemics occur from time to time. However, cv. Shinna was widely adopted by the wheat growers in southeastern Ethiopia and became susceptible immediately after its release. Cv. Dodota was tested in moisture-stress areas and released for lowland areas in which yellow rust is not prevalent. Unfortunately, it was adopted by the farmers in the highland areas and as a result became susceptible to yellow rust. In contrast, cultivars such as Simba, Sirbo and KBG-01 were resistant to yellow rust populations in the country. Tables 5A and 5B shows the reaction of Kenyan cultivars to yellow rust. Cvs Kenya Leopard, Africa Mayo, Bonny and Kenya Plume showed moderately resistant to moderately susceptible reactions to yellow rust populations in Ethiopia. As reported by Danial (1994) and Danial and Stubbs (1992), these cultivars have shown a high level of resistance to yellow rust populations in Kenya over the periods 1976–79 and 1986–91 and the incomplete resistances of these cultivars have lasted 20 to 30 years in Kenya. The resistance of these cultivars to yellow rust populations in Ethiopia for 7 years may also confirm durability of the resistance of these cultivars. Such resistance has been reported in many parts of the world. However, from 2003 these genotypes have been attacked by yellow rust, but with relatively low severity. In addition to yellow rust resistance, Kenyan genotypes Kenya Leopard, Bonny and Kenya Plume have also been resistant to stem rust populations in Ethiopia. Such cultivars with durable resistance to yellow rust can be utilized in a breeding programme
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Meeting the Challenge of Yellow Rus
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iii Foreword Wheat is grown on roug
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v Preface The Central and West Asia
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vii About this publication This vol
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ix 2nd Regional Yellow Rust Confere
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Meeting the Challenge of Yellow Rus
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4 Epidemiology of wheat yellow rust
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6 Prevalent yellow rust pathotypes
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8 Pakistan Dr Badaruddin Soomro, PA
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10 Dr Naeem Ahmad, Wheat Research I
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Yellow rust of wheat in Nepal: an o
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inoculum originating from infected
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17 Control Efforts were made to dev
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Karki, C.B. 1994. Genetics of rust
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No virulence was observed on plants
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23 Results and discussion In the tw
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Virulence to yellow rust resistance
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and Yr27, the seedling data may not
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Yield evaluations of the PBW 343- a
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variation for yellow rust resistanc
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A number of Kauz-derived cvs, e.g.
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Kisana, S.N., Mujahid, Y.M. & Musta
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37 Material and methods Wheat nurse
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Challenge of a new race of Puccinia
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41 Table 1. Response of the yellow
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43 Occurrence and importance of yel
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To better explain the differences i
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Weather data were taken from the ne
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Disease progress stopped, in genera
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Roelfs, A.P. 1985. Epidemiology in
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The wheat stripe rust pathogen over
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55 6E150A+ 4E8A+ 6E130A+ 130E2A+ 6E
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Agriculture-guided evolution of pat
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Yr SD, Yr SU and YrA was observed.
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The data presented in Table 3 show
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Kirmani, M.A.S. 1980. Comparative e
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ust infection at the CIMMYT station
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67 Table 1. Estimation of the numbe
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Resistance to stripe rust disease o
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may be from the Aegilops parent as
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McNeal, F.H., Konzak, C.F., Smith,
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Disease severity (percentage of rus
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77 Table 2. Genetic analysis of res
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Defence mechanisms against rust, an
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for the biosynthesis of a large num
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components of the signalling pathwa
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Xing, T., Wang, X.J., Malik, K. & M
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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
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101 100 90 80 CHECKS IW IWWIP CAC E
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• To investigate the effectivenes
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105 Figure 1. Locations of yellow r
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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
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Selection of yellow rust-resistant
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These genotypes—depending on the
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Reaction of some international whea
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nurseries were irrigated with mist
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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
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Dubin, H.J., Johnson, R. & Stubbs,
Page 144 and 145: 134 Yellow rust of wheat in Ethiopi
Page 146 and 147: 136 Virulence of stripe rust on dif
Page 148 and 149: 138 Turkey, Lebanon and Syria. Race
Page 150 and 151: 140 Evaluation of seedling and adul
Page 152 and 153: 142 of resistance not only to yello
Page 154 and 155: 144 Yellow rust reaction, disease d
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Page 158 and 159: 148 Outputs of the ten years of eva
Page 160 and 161: 150 Characterization of resistance
Page 162 and 163: 152 Results of testing winter wheat
Page 164 and 165: 154 Dr Valentina Ibragimoval, Kyrgy
Page 166 and 167: 156 Surveys of yellow rust populati
Page 168 and 169: 158 nurseries. ICARDA, at its headq
Page 170 and 171: 160 Table 2. Yellow rust differenti
Page 172 and 173: 162 Table 4. Selected elite cultiva
Page 174 and 175: 164 Table 7 shows the relative effe
Page 176 and 177: 166 Table 8. Field reaction of whea
Page 178 and 179: 168 Syria, Lebanon, Iran and Turkey
Page 180 and 181: 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
Page 186 and 187: 176 genes Yr1, Yr2, Yr6, Yr7, Yr8 a
Page 188 and 189: 178 Table 3. Resistance to yellow r
Page 190 and 191: 180 Monitoring bread wheat genotype
Page 192 and 193: 182 3000 masl. Susceptible check cv
Page 196 and 197: 186 with great effect, particularly
Page 198 and 199: 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
Page 209 and 210: 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
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Page 219 and 220: 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
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Page 235 and 236: 225 Development of a detached leaf
Page 237 and 238: 227 Virulence variation of Puccinia
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Page 241 and 242: 231 Virus-induced gene silencing in
Page 243 and 244: 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
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241 Contents List of participants i
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Resistance response of promising wh
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Constructing physical and genomic m
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Inheritance of yellow rust resistan
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249 Algeria List of participants Dr
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Tajikistan Prof. Dr Hafiz Muminjano
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Identification of effective and dur
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For each resistant genotype (Table
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257 Figure 1. AUDPC of ineffective
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259 Figure 3. AUDPC of susceptible
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Among the wheat lines tested, 51% c
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263 Introduction Wheat (Triticum ae
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wheat germplasm lines from were tes
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An analysis of the 2009 epidemic of
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Overall yield loss estimation A gen
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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
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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
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It is evident from Table 3 that Lu2
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299 Table 4. Rust reactions in hot-
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Evaluation of Indian wheat genotype
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components individually is quite la
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305 Table 1. Grouping of AVT-2nd ye
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Effective and ineffective resistanc
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seedling resistance and adult plant
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The cultivars expressing an infecti
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New approaches in traditional resis
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(resistant × resistant); susceptib
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twice that of resistant ones. When
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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
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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
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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
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conditions. In 2006 and 2008, due t
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411 Regulation of development of ye
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