Meeting the Challenge of Yellow Rust in Cereal Crops - ICARDA

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186 with great effect, particularly in areas in which race-specific resistance is rapidly overcome by the pathogen. As indicated in Tables 6A and 6B, the CIMMYT advanced lines used as supplemental differentials, namely KVZ/7C, HAR 727, HAR 1349, HAR 729, HAR 421, HAR 723, HAR 934, HAR 1038 and HAR 820, showed moderately susceptible to susceptible reactions with low severity compared with the susceptible check. However, KVZ/7C, HAR 727, HAR 729, HAR 421, HAR 723, HAR 934 and HAR 820 have been only resistant to stem rust population in Ethiopia. Similar to this field study, a seedling study by Ayele et al. (1990) showed that these cultivars were resistant to most of the yellow rust isolates tested. Hence these cultivars could also be used in a breeding programme. Table 5A. Disease severity and reaction of Kenyan cultivars to yellow rust at six locations in Ethiopia, 1997–2000 Variety Year of release 1997 1998 1999 2000 Kenya Nyangumi — — 40MS 30S 40MS Kenya Leopard 1966 15MS 30MS 15MS 5MR Africa Mayo 1960 0 5MS 5MS 5MS Trophy 1968 30MS 70MS 40MS 30MS Bounty 1967 10MS 50MS 30MS 20MS Bonny 1967 10MS 10MS 20MS 10MR Frontach 1963 10MS 40MS 40S 30MR Kenya Kudu 1966 20MS 20MS 40S 30MR Kenya Plume 1965 0 Tr-MS 5MR 0 Morocco (check) 1966 100S 100S 100S 100S Table 5B. Disease severity and reaction of Kenyan cultivars to yellow rust at six locations in Ethiopia, 2001–2005 Cultivar Year of release 2001 2002 2003 2004 2005 Kenya Nyangumi — 60MS 100S 80S 50S 80S Kenya Leopard 1966 20MS 25S 40MS 25S 50S Africa Mayo 1960 5S 30MS 5MS 10MS 40S Trophy 1968 60S 40MS 40MS-S 30S 80S Bounty 1967 80S 40MS 25S 30S 80S Bonny 1967 20MS 25MS 5MS 20S 50S Frontach 1963 80S 90MS 30S 50S 80S Kenya Kudu 1966 80S 90MS 15MS 30S 70S Kenya Plume 1965 5MS 20MR 5MR 10MS 30S Morocco (check) 1966 100S 100S 100S 100S 100S
187 Table 6A. Disease severity and reaction of advanced lines to yellow rust at six locations in Ethiopia, 1995–1999 Line 1995 1996 1997 1998 1999 KVZ/7C 5MS Tr-MR 0 5MS-MR 5MS HAR 719 0 Tr-MS 0 10MS 10MS HAR 727 0 5MR 0 5MS 10MR HAR 720 0 0 0 5MR Tr-MS HAR 627 Tr-MS Tr-MS 90S 100S 10MS HAR 1331 0 Tr-MR 0 10MS 5S HAR 1349 0 Tr-MR Tr-MR 5MS — HAR 729 Tr-MS Tr-MS 10MS 20S 30MS HAR 1003 5MS 20MS 20MS 25MS 30MS HAR 421 Tr-R 5S 0 Tr-MS 10S HAR 723 Tr-R 5S 0 Tr-MS 10S HAR 934 0 5MS 5MS 20MS 30S HAR 1018 0 — — — 40S HAR 1038 0 0 0 Tr-MS Tr-MR HAR 743 Tr-MS 20MS 10MS 5MS 10MS HAR 733 0 0 10MS 5MS 20MS HAR 820 0 5MS 0 0 Tr-MR HAR 845 0 0 0 5MS 80S Morocco (check) 100S 100S 100S 100S 100S Table 6B. Disease severity and reaction of advanced lines to yellow rust at six locations in Ethiopia, 2000–2004 Line 2000 2001 2002 2003 2004 KVZ/7C Tr-MS 15MR 20MS 15S 20S HAR 719 10MS 20MS 50S 50S 80S HAR 727 5MS 15MS 15MS 15S 15S HAR 720 Tr-MS 40MS 50S 50S 40S HAR 627 5MS 15MS 30MS 30MS 10MS HAR 1331 0 10MR 15MS 10MS 25S HAR 1349 – – – 40MS 10S HAR 729 10MS 20S 30MS 40S – HAR 1003 30MS 40S 60MS 70S 30S HAR 421 5MS 30MS 20MS 10S 20S HAR 723 5MS 15MS 20MS 10S 20S HAR 934 20MS 40S 30MS 30S 20S HAR 1018 10MS 60S 20S 30S 20S HAR 1038 Tr-MS 10S 5S 30MS 20S HAR 743 15MS 40MS 50MS 60S 40S HAR 733 10MS 40MS 70S 70S 40S HAR 820 5MS 40S 20S 10S 15S HAR 845 5MS 70MS 30MR 10S 20MS Morocco (check) 100S 100S 100S 100S 100S
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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,
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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 194 and 195: 184 Table3. Disease severity and re
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
Page 215 and 216: associated with a greater yielding
Page 217 and 218: een based on a single major gene or
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
Page 231 and 232: Australian pathotypes of Puccinia s
Page 233 and 234: and cultural practices have been ad
Page 235 and 236: 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
Page 243 and 244: 233 Inheritance of resistance to ye
Page 245 and 246: 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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Meeting the Challenge of Yellow Rust in Cereal Crops - ICARDA

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