Th1_Adaptation of hybrid rice technology in West Africa

686 views

Published on

3rd Africa Rice Congress
Theme 1: climate resilient rice
Mini symposium: Enhancing rice yield potential
Author: El-Namaky

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
686
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
18
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Th1_Adaptation of hybrid rice technology in West Africa

  1. 1. Adaptation of hybrid rice technology in West Africa R. El-Namaky, K. Traore, G. Kanfany, K. Bimpong, I. Diagne and B. Manneh Africa Rice Center (AfricaRice), Saint-Louis, Senegal Corresponding author: r.elnamaky@cgiar.org
  2. 2. Introduction  Rice (Oryza sativa L.) is the second largest crop grown in the world in terms of both area and production.  Hybrid rice covers about 50% or 15 million ha of the total rice area each year in China . The yearly increased of grain yield by hybrid rice can feed more than 70 million people every year.  In Africa, the quantity of rice imported/year was 12.0 million tones in 2012.  using hybrid rice with 15-20% yield advantage over improved Inbred varieties one of the best way to increase rice production.
  3. 3. Objectives 1- Evaluate and demonstrate performance of hybrids in SSA countries. 2- Develop new hybrid combinations in background of African varieties. 3- Establish hybrid rice seed production systems
  4. 4. Materials and Methods • 170 hybrids from China (CAAS) evaluated at 8 countries (20102011) for adaptability and resistance to insect and diseases. • 28 hybrids from IRRI evaluated at AfricaRice Sahel Station, Saint Louis Senegal (2010-2011). • 100 hybrids developed and evaluated at AfricaRice Saint Louis, Senegal 2012 -2013. • All hybrids were evaluated under recommend culture practice in each country. • 200 hybrid combinations were produced in small plots of hybrid seed production through three line system
  5. 5. Results and Discussion
  6. 6. Grain yield of 122 Chinese hybrids in six countries in Africa (2010) Effect Genotype (Hybrids) Environment (Country) GxE (Hybrids* Country) Num DF* 136 5 596 Den DF* 199 30 199 F-Value 3.4529 118.2648 2.2987 Prob F <0.0001 <0.0001 <0.0001
  7. 7. Grain yield of Chinese hybrids in five countries in Africa (2011)
  8. 8. Performances of IRRI hybrids at Saint Louis, Senegal
  9. 9. Chart of hybrid rice breeding program in AfricaRice IRRI - CMS lines F1- complete sterile …. Local African varieties F1- fertile …… WS - 2010 Re-Testcross Testcross Nursery DS - 2011 Backcross BC1 BC2 BC3 DS - 2010 Combining Ability Evaluation Observational Yield Trial Preliminary Yield Trial BC4 DS - 2012 WS- 2012 DS- 2013 WS - 2013 MET BC5 DS – 2014 WS - 2014 PET New CMS lines PAT WS - 2011 FAT Nominate promising hybrids for release in target countries 2015
  10. 10. Identify of new parental lines Identify new 50 restorer lines by SSR and confirmed by testcross AD9246 Nerica-L19 SAHEL 134 SAHEL 159 SAHEL 328 SAHEL 329 Kogoni Sahel 108 Nerica-L27 KCDL ARS -6-2-2-3 ARS -7-2-2-4 ARS -8-2-2-5 ARS -9-1-3-1 ARS -10-1-3-2 ARS -11-1-3-3 ARS -12-1-3-4 ARS -13 -1-3-5 ARS -14 - 2-1-2 IR32307-10-3-2-1
  11. 11. Identification of new restorer lines by testcross Male parent CMS line 50% pollen Spikelet 1000 Grain flowerin fertility fertility grains yield/ g % % weight plant (g) IR58025A/ SAHEL 329 106 99 88.4 21 42.0 IR58025A/ 08FAN2 103 99 88.1 27 44.3 IR58025A/ AD9246 111 85 90 29 52.7 IR58025A/ GIZA 178 109 80 88.7 21 56.7 IR58025A/NERICA S 19 119 99 90.1 28 63.0 IR58025A/ RC8 101 100 89.5 24 50.3 IR58025A/ SAHEL 108 116 87 92.6 25 56.0 IR58025A/ SAHEL 134 123 88 89.8 27 41.3 SAHEL 159 114 99 90 27 56.3 IR58025A/WAS 181-B-1-1 122 99 86.9 29 48.7 IR58025A/ WAS 196-B-5-1 111 99 85.5 27 57.3
  12. 12. Performance of promising hybrids and check cultivars across 2012 and 2013 Hybrid AR023H AR042H AR010H AR013H AR008H AR009H AR031H AR017H AR018H AR062H AR043H AR044H AR051H Sahel 108 Ck Days to 50% flowering 85 91 91 90 88 87 88 87 87 87 85 85 85 85 Plant height (cm) 102 109 105 101 107 109 104 106 112 111 107 107 108 89 Panicle lengh (cm) 24 27.3 26.2 28.2 30 26.5 29 26.7 24.4 29.7 30 28 29.3 24.8 Panicle m-2 489 490 517 495 415 425 395 321 407 404 373 421 443 362 Spikelet fertility (%) 82.8 83.7 82.7 82.3 83.7 83.1 83.7 82.6 83.6 94 81.7 83.7 81.2 80.5 Grain yield(t ha-1) 10.6 10.5 10.3 10.1 10 10 10 9.9 9.9 9.9 9.8 9.7 9.7 8.8 Hybrid advantage (%) 20.7 19.65 17.43 15.22 13.84 13.52 14.23 12.83 12.96 13.31 11.17 10.21 10.96 0
  13. 13. Grain physical characteristics and milling properties of promising Hybrids No Genotypes Total Milling recovery% Whole % 100SW (g) Scale (length) Grain Shape 7 8 1 11 10 12 3 9 6 5 4 2 13 69.85 a 69.60 ab 69.25 ab 68.90 ab 68.72 ab 68.70 ab 68.66 ab 68.17 abc 67.86 abc 67.79 abc 67.64 abc 67.02 bc 65.58 cd 62.77 a 61.07 abc 59.79 bcd 58.08 de 57.48 def 58 def 58.73 cde 57.66 def 58.63 cde 59.26 cd 59.54 bcd 55.40 f 56.51 ef 2.40 bc 2.36 c 2.70 ab 2.70 ab 2.46 bc 2.43 bc 2.36 c 2.60 abc 2.76 a 2.56 abc 2.56 abc 2.40 bc 2.40 bc Long Long Extra Long Extra Long Extra Long Long Extra Long Extra Long Long Medium Long Extra Long Long ARS014H ARS011H ARS009H ARS015H ARS004H ARS012H ARS013H ARS007H ARS005H ARS008H ARS010H ARS006H SAHEL 108 Hybrid had high milling properties long to extra long grains and slender. Slender Slender Slender Slender Slender Slender Slender Slender Slender Medium Slender Slender Slender
  14. 14. More than 100 hybrids developed in Saint Louis and evaluated in observational (OB) yield trial at Fanaye Ndiaye (DS-2013).
  15. 15. AR003H AR013H AR023H AR010H AR043H
  16. 16. Yield of hybrid Rice Seed Production at Saint Louis, 2012 -3013 Combination Yield (kg/ha) IR58025A/Sahel 108 1670 IR58025A/Giza178 1845 IR68888A/Sahel 134 1395 IR68888A/Giza 178 2450 IR69625A/Sahel 134 2160 IR69625A/Sahel329 1947
  17. 17. Establish hybrid rice seed production systems
  18. 18. PhD, MSc and BSc student from Senegal, Burkina Faso and Côte d'Ivoire, trained on all breeding activities including hybrid rice PhD student from Ghana & BsC from Senegal
  19. 19. Challenges of hybrid rice in Africa  Slow adoption of hybrid technology by rice farmers.  Slow variety release process  The higher cost of hybrid seed production .  Capacity building.
  20. 20. Future plan 1. Evaluate promising hybrids with 15-20% in more countries in West and East Africa. 2. Develop new hybrids tolerant to biotic and abiotic stresses. 3. Encourage private seed sector for hybrid seed production. 4. Enhance capacity building of NARS and private sector for hybrid technology.
  21. 21. You Thank Trail of HRSP in Africa Are we can reach to this level? Hybrid Seed production in China

×