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P.C. Musoli, Coffee Research Centre, P.O. Box 185, Mukono

SELECTION AND PROPAGATION OF 7 ELITE CWD RESISTANT ROBUSTA COFFEE VARIETIES. P.C. Musoli, Coffee Research Centre, P.O. Box 185, Mukono. RESEARCH TEAM. Scientists P.C. Musoli J. G. Hakiza J. Mwesigwa P. Wetala P. Aluka P. Kucel I. Sebugenyi A. Nalukenge R. Matovu D. Kyetere

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P.C. Musoli, Coffee Research Centre, P.O. Box 185, Mukono

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  1. SELECTION AND PROPAGATION OF 7 ELITE CWD RESISTANT ROBUSTA COFFEE VARIETIES P.C. Musoli, Coffee Research Centre, P.O. Box 185, Mukono

  2. RESEARCH TEAM Scientists • P.C. Musoli • J. G. Hakiza • J. Mwesigwa • P. Wetala • P. Aluka • P. Kucel • I. Sebugenyi • A. Nalukenge • R. Matovu • D. Kyetere • J. Ogwang • A. Kangire • Technicians • S. Olal • A. Nabaggala • C. Kabole • S. Nakendo • J. Pande • J. Ekwaru • N. Edongot • G. Ebong • D. Musiime • S. Okiror • L. Chepkurui • Collaborating Institutes • UCDA • CABI • CIRAD

  3. Coffee Wilt Disease (CWD) has been the major constraints of Robusta coffee production since 1993

  4. COREC started a breeding program in 1997 to develop Robusta coffee varieties: • Resistant to CWD • Resistant to other major coffee diseases • Leaf rust • Red blister disease • High yielding • Have acceptable market qualities • Good cup quality • Good physical bean qualities

  5. Highly susceptible Moderately susceptible Moderately resistant Resistant • Evaluated Robusta coffee germplasm for resistance against CWD through assessment in the field under natural infection (20 clones studied for 6 years) • Selected 3 clones for multi-location testing en route to release for cultivation Quantitative response to CWD by the Robusta coffee clones

  6. Mortality after 66 months

  7. 2) Evaluated Robusta coffee germplasm for resistance against CWD through screen house assessment after artificial inoculation of tens of thousands seedlings using root dip method Susceptible plants Survivors

  8. Planted all CWD resistant individuals (1500) identified from artificial inoculations into mother gardens at Kituza (at different times)

  9. Cloned and planted CWD resistant individuals in rows of 6 trees for assessment

  10. Evaluated the CWD resistant clones in on-station field trials at Kituza: • Yield • Quality • Resistance to other diseases Leaf rust Red blister

  11. 25 with high potential were planted in multi-location trials at Ibanda, Nakanyonyi, Kamuli and Mityana

  12. 7 best lines were selected and released by the national variety release committee as new varieties • Key • 1= no disease ; 2 = 1-25 diseased; 3 = 26-50% diseased; 4 = 51-75% diseased; 5 = 76-100% diseased • * = Yield for only 1 year and was affected by thefts • + = average yield for 6 years

  13. Variety Kituza R7 (J1/14/21/1 Released varieties R/1/4 = Kituza R1 Q/3/4 = Kituza R2 J/1/1 = Kituza R3 E. U 14 = Kituza R4 E.u 20 = Kituza R5 2/22/12 = Kituza R6 J1/14/21/1 = Kituza R7

  14. Propagation of CWD resistant varieties • The varieties are being maintained in mother gardens and field plots at Kituza • The varieties have to be propagated exclusively by vegetative methods (rooted cuttings and tissue culture) due to segregation of the CWD resistance • COREC provide rooted cuttings or tissue culture plant lets of these varieties to private nursery operators and government institutions for further multiplication and distribution to farmers

  15. Beneficiary nursery operators (so far)

  16. Work Still In Progress • Assessment of varieties in the existing multi-location trials (Mityana, Nakanyonyi, Kamuli and Mukono Ibanda) for resistance against leaf rust, and red blister; quality and yield is till still in progress • Over 1,000 lines have still not yet been evaluated in the on-station trial at Kituza

  17. 11 newly selected lines are being propagated for planting in multi-location trials

  18. Challenges • Coping with: • limited mother bushes of the elite varieties • bureaucratic Government procurement procedures • Escalating research cost • escalating demand for emerging research areas-Twig borer • Increasing demand on Arabica research • Salaries of project staff • inconsistent stakeholder support/commitment to coffee research • Upgrading dilapidated facilities for multiplying elite varieties

  19. Way forward • Commitment and Consistent support from the stakeholder • Increased private sector participation in technology development and dissemination

  20. Acknowledgement • CTF for opportunity • All scientist involved • COREC • UCDA • CIRAD • CABI • Uganda Government • Farmers’ support through UCDA • Development partners • EU • CFC/ICO • USAID

  21. THANK YOU

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