Breeding, Survey and Epidemiology of Yellow Rust in Tajikistan in 2010
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Breeding, Survey and Epidemiology of Yellow Rust in Tajikistan in 2010

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Mahbubjon Rahmatov, Hafiz Muminjanov, Zebuniso Eshonova, Ahad Ibrohimov, Mirzoali Karimov, Mogens Hovmøller, Kumarse Nazari, Alexey Morgounov, Arne Hede, Eva Johansson

Mahbubjon Rahmatov, Hafiz Muminjanov, Zebuniso Eshonova, Ahad Ibrohimov, Mirzoali Karimov, Mogens Hovmøller, Kumarse Nazari, Alexey Morgounov, Arne Hede, Eva Johansson

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  • 1. Breeding, Survey and Epidemiology of Yellow Rust in Tajikistan in 2010
    Mahbubjon Rahmatov, Hafiz Muminjanov, Zebuniso Eshonova, Ahad Ibrohimov, Mirzoali Karimov, Mogens Hovmøller, Kumarse Nazari, Alexey Morgounov, Arne Hede, Eva Johansson
    mahbubjon@gmail.com
  • 2. OUTLINE
    SURVEY AND MONITORING OF YELLOW RUST IN 2010
    EPIDEMIOLOGY OF YELLOW RUST IN 2010
    YELLOW RUST RACE ANALYSIS
    NATIONAL WHEAT BREEDING ACTIVITY IN 2010
    UTILIZED GERMPLSM FOR WHEAT BREEDING CYCLE IN 2010
    RESULTS OF WHEAT BREEDING IN 2010
    CONCLUSIONS
  • 3. Wheat in Tajikistan
    Wheat is a main staple food crop
    Bread wheat is growing about 350 000 ha
    Production about 650 000 t. in 2009
    Average yield is 2.0 -2.2 t/ha.
    More than 60% of daily calories for people
    Yellow Rust is most important disease
  • 4. SURVEY AND MONITORING OF YELLOW RUST IN 2010
    Yellow Rust Survey and Monitoring were conducted in main wheat growing areas
    The survey and monitoring were followed by BGRI standardized methodology
    During flowering and milk/dough growing stage (April-May)
    The assessment for severities based on modified Cobb scale (Peterson et al. 1948), and the reaction by Roelfs et al, 1992
    More than 100 wheat fields were surveyed
  • 5. Surveyed and Monitored Locations in Different Agro Ecological Areas and breeding trials
  • 6. Survey and Monitoring of Yellow Rust in Tajikistan in 2010
  • 7. EPIDEMIOLOGY OF YELLOW RUST IN 2010
    In Tajikistan yellow rust epidemics occurred an intervals of 4-5 years
    The epidemiology of yellow rust were investigated in all wheat growing areas both under irrigation and rainfed conditions in 2010.
    The grain yield losses were investigated in susceptible varieties ranges between 20 to 50% in farmer fields.
  • 8. Yield data during 2006-2010 in Seed Farm, North of Tajikistan
  • 9. Yield data during 2006-2010 in Seed Farm, Central Part of Tajikistan
  • 10. YELLOW RUST RACE ANALYSIS
    During Survey and Monitoring yellow rust samples were collected for race analysis
    The yellow rust were submitted to GRRC
    The yellow rust race analysis was done according Hovmøller & Justesen, 2007
    The identification of YR races were based on 26 differential varieties and 8 NIL in Avocet S background
  • 11. RACE ANALYSIS
    A total of five races were detected within 14 recovered isolates, based on differential varieties
    We used differentials carrying: Yr1, Yr2, Yr3, Yr4, Yr5, Yr6, Yr7, Yr8, Yr9, Yr10, Yr15, Yr17, Yr24, Yr25, Yr27 and Yr32
    Three races were multi-virulent, combining virulence towards Yr1, Yr2, Yr3, Yr4, Yr6, Yr9, Yr25 and Yr32
    Four races had virulence towards Yr27
  • 12. YELLOW RUST TRAP NURSERY IN 2010
    3rd IYRTN was provided through ICARDA
    Trap nursery was used to survey the presence of individuals factor of the yellow rust population in 2010
  • 13. Virulence and Avirulence Genes in Yellow Rust Trap Nursery in 2010
    Virulence Genes: Yr1, Yr2, Yr4, Yr6, Yr7, Yr9, YrA, YrSp, Yr21, Yr22, 23, Yr27, Yr29,Yr31 and Yr32
    Avirulence Genes: Yr5, Yr8,Yr10, Yr15, and Yr17
  • 14. NATIONAL WHEAT BREEDING ACTIVITY IN 2010
    The role of National Wheat Breeding Program is high importance in collaboration with Int. Centers
    International cooperation has been established within the framework of National Wheat Breeding program
  • 15. Utilized Germplasm for Wheat Breeding Cycle in 2010
    Breeding genotypes were obtained from CIMMYT, IWWIP, ICARDA and OSU
    Three widely grown varieties were used as a local reference in each nursery namely Navruz, Alex and Starshina
  • 16. Selection Process in the North of Tajikistan
  • 17. Final Selection in Central of Tajikistan
  • 18. Results
    High level of YR were recorded in the breeding trials over three locations
    70% of breeding lines were damaged by YR and was showed susceptible reactions from 30S to 100S in the breeding nurseries
  • 19. The Number of Selected Genotypes in 2010 from Different Nurseries
  • 20. Submitted advanced lines for official testing in 2010
    OTUS/TOBA97,
    HUAYUN INIA,
    KAUZ*2/CHEN//BCN/3/MILAN,
    CBRD/KAUZ,
    CMH82A.1294/2*KAUZ//MUNIA/CHTO/3/MILAN.
  • 21. Conclusions
    Yellow rust is an important disease in Tajikistan
    Annually conducting of survey and monitoring are necessary to define status of yellow rust in Tajikistan.
    Yield loss in seed farm were ranged from 20-50%
    Wheat breeding programs must strengthen in cooperation with International Wheat Breeding programs to enhance the germplasm collection which resistance for yellow rust and other diseases
  • 22. ACKNOWLEDGEMENT
    ICARDA
    CIMMYT
    Global Rust Reference Center
    IWWIP
    Oklahoma State University
    BGRI
    FAO