1. New sources of stripe rust resistance in
international winter wheat nurseries
evaluated in Uzbekistan in 2013
O. Amonov, Z. Ziyaev, D. Musurmonov, S.
Alikuov, A. Amanov, R. C. Sharma
2ND
INTERNATIONAL WHEAT STRIPE RUST
SYMPOSIUM
IZMIR, TURKEY
APRIL 28-MAY 01, 2014

2. Wheat in Uzbekistan (2012)
• Area: 1.4 million ha
• Production: 6.5 million t
• Productivity: 4.7 t/ha
Source: FAO, 2013

3. CONSTRAINTS OF WHEAT PRODUCTION IN
UZBEKISTAN
• Yellow Rust
• Leaf rust
• Terminal heat stress
• Salinity
• Low soil organic matter content
• Weed problem (costs causing less use of
herbicides)
• Sun pest

4. WHEAT BREEDING OBJECTIVES
• High and stable grain yield
• Good bread-making quality
• Earliness
• Plant height (90-100 cm)
• Resistance to diseases
• Winter hardiness
• Drought resistance
• Heat tolerance
• Salt tolerance
• Resistance to lodging

5. MAIN WHEAT BREEDING RESEARCHMAIN WHEAT BREEDING RESEARCH
INSTITUTIONS IN UZBEKISTANINSTITUTIONS IN UZBEKISTAN
GALLARAL
KARSHI
TASHKENT

6. Multilocation evaluation of wheatMultilocation evaluation of wheat
GALLARAL
KARSHI
TASHKENT
TERMEZ
KHOREZM
NUKUS
FERGANA

7. Evaluation for stripe rust
Spore multiplication
Seedling evaluation
(Karshi)
Inoculation
Field evaluation
(Kibray)

8. Natural and artificial epidemics of yellow rust in
winter wheat nurseries in Uzbekistan, 2013

9. Krasnodar-99,
Uzbekistan, 2013

10. Wheat nurseries evaluated in 2013
Uzbekistan
• 16th
IWWYT-IR
• 15th
IWWYT-SA
• 13th
YT-IR
• 13th
AYT-IR
• 13th
AYT-SIR
• Uzb Agro-ecological Yield
Trial
• Uzb Preliminary Yield
Trial
• CAC Yield Trial
• 20th
FAWWON-IR
• 20th
FAWWON-SA
• 4th
IWSRRSN
• Trap nurseries
• Key location nurseries
• Salinity yield trials

11. Stripe rust resistant identified in International
Nurseries in 2013, Uzbekistan, being further
evaluated in 2014
Nursery
Total
number of
entries
Number of
stripe rust
resistant
lines
No. of resistant
lines advanced
to 2014
%
16 IWWYT-IR 40 20 14 35
15 IWWYT-SA 30 11 8 27
20 FAWWON-IR 165 80 23 14
20 FAWWON-SA 111 39 15 14

12. Stripe rust resistant lines indentified in 2013,
Uzbekistan for advanced yield trial in 2014
Trait(s) evaluated
Number
selected
Yellow rust (YR) 132
YR+ Maturity 83
YR + maturity +plant height 57
YR + maturity +plant height +grain yield + quality 10

13. Superior lines advanced to 2014
Pedigree / Name Source
Stripe
rust
sev (%)
Yield
(t/ha)
Karshi
Yield
(t/ha)
Kibray
Kambara1/Kalyoz-17 16IWWYTIR-6 30 8.349 4.475
TAM200/Kauz//Becuna-6 16IWWYTIR-7 5 7.170 3.436
Seri.1B*2/3/Kauz*2/Bow//Kauz/4/Bagci2002 16IWWYTIR-9 0 6.038 4.508
Agri/Nac//Kauz/4/55.1744/Mex67.1//No57/3/Attila 16IWWYTIR-11 5 8.208 4.519
JI5418/MARAS//SHARK/F4105W2.1 16IWWYTIR-14 0 8.302 5.272
Shark-1/3/Agri/Bjy//Vee/4/Shark/F4105W2.1 16IWWYTIR-15 0 8.396 5.142
Shark-1/3/Agri/Bjy//Vee/4/Shark/F4105W2.1 16IWWYTIR-16 5 6.981 4.431
4WON-IR-
257/5/Ymh/Hys//Hys/Tur3055/3/Dga/4/Vpm/Mos
16IWWYTIR-25 0 7.925 5.989
Zarrin/Shiroodi/6/Zarrin/5/Omid/4/BB/Kal//Ald/3/Y
50E/Kal*3//Emu
16IWWYTIR-32 25 8.302 5.892
Local Check (Jaihun) 70 8.491 2.736
LSD0.05 22 1.104 1.538
CV (%) 23 7.4 16.9

14. New Variety identified in 2013 to be submitted
in 2014
Shark-1/3/Agri/Bjy//Vee/4/Shark/F4105W2.1 YR =0 GY =8.4 t/ha

15. Uzbekistan hosted International Winter Wheat
Travelling seminar (20 – 25 May 2013)
Around 50 scientists from 11 countries participated

16. Summary
• More than 100 new lines resistant to stripe rust were
identified in international nurseries evaluated under
severe epidemics (inoculated and natural) in
Uzbekistan in 2013
• Ten stripe rust resistant lines, superior for grain yield,
and with acceptable quality and agronomic traits are
being evaluated in 2014
• One candidate cultivar was identified for submission
to State Variety Test Commission in 2014
I would like to summarize my presentation here

17. Thank you for attention