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Th1_Participatory Variety Selection of Elite Genotypes for Improving Rice Productivity in Zanzibar
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Th1_Participatory Variety Selection of Elite Genotypes for Improving Rice Productivity in Zanzibar

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3rd Africa Rice Congress …

3rd Africa Rice Congress
Theme 1: climate resilient rice
Mini symposium: reaching farmers and consumers
Author: Khatib et al

Published in Technology , Business , Real Estate
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  • 1. Participatory Variety Selection of Elite Genotypes for Improving Rice Productivity in Zanzibar K.J. Khatib1, B.K. Mohammed1, K. Senthilkumar2 and F.M. Idarous1 1 Zanzibar Agricultural Research Institute (ZARI), Zanzibar, Tanzania 2Africa Rice Centre (AfricaRice), Dar es Salaam, Tanzania
  • 2. INTRODUCTION • Zanzibar (Zanzibar + Pemba Islands) makes up one constituent part of the United Republic of Tanzania. • She has a total land area of 2,643 km2 • A Population of 1.3m people, annual growth rate of 3.1% and population density of 490 people/km2 (National Population Census of 2012)
  • 3. Introduction Cont… sativa L.) • Zanzibar has a tropical • Rice (Oryzahave beenis thought to brought sub humid climate. to Zanzibar by sea traders about 2000 years ago • Average temperature (Carpenter, 1978; Lu and Chang, 1980). is 27⁰C. • Per capita consumption of • Average annual 63.1 kg/person/year rainfall of 1600 – • Presently, Annual demand of 1800mm. 80,000 tons – Long rains–Mar–Jun – Short rains–Oct– Dec • Locally produced only 16,000 tons. • Importation of 64,000 tons/year
  • 4. Introduction cont… Production constraints include: • use of local varieties which have low yield potentials, • Poor agricultural practices • shortage of good quality seeds, • Declined soil fertility (low usage of fertilizers) • high incidences of pests and diseases, • Salinity, droughts and floods due to climate change • post-harvest losses etc Objective To identify suitable rice varieties among elite genotypes with suitable characteristics such as high yield potential, tolerant to biotic and abiotic stresses and improved grain characteristics through participatory variety selection to introduce them for enhanced productivity in Rainfed lowland and irrigated ecosystems.
  • 5. Methodology • The trials were conducted at Mwera lowland rice experimental field, West District, Zanzibar. • Treatments were the advanced breeding lines obtained from IRRI- ESA Regional Office with two controls (Table). • The experimental design of the trials RCBD with 3 replications. S. No Varieties in Masika 2011 Varieties in Masika 2012 1 IR 09L325 IR 77379-33-3-7-19-B 2 IR 09N505 IR 06A 107 3 IRRI 146 IR08M110 4 IR 05N359 IR 06M 139 5 IR 02A149 IR77390-6-1-18-2-5 6 IR 08M110 IR 05N 359 7 IR 07M101 IR 09A 136 8 IR 06A107 IR 04A212 9 IR 07A166 IR 07A 167 10 IR 07A167 IR73680-3-1-14-1-4 11 IR 09A136 IRRI 154 12 IR 03A550 IR 07A 166 13 IRRI 123 HHZ-15-SUB 1-Y3-Y1 14 SARO 5 (Check 1) SARO 5 (Check 1) 15 SUPA BC (Local check) SUPA BC (Local check)
  • 6. Methodology Cont.. • • • • • P and N fertilizers were Nurseries were prepared applied at @ 40 kg P2O5 ha-1 for each variety and 120 kg N ha-1 respectively. separately and the • Weeds were removed by hand seedlings were raised to at 13 DAT and at near PI each 21 days old. time before fertilizer The main field was well application. prepared to level. • Birds were scared from milk Plot size was 1.4m x 5m long. stage to maturity. A plant spacing of 0.2m x • Stakeholders were invited for 0.2 m and one PVS at crop maturity. seedling/hill transplanted.
  • 7. PVS Plate 1: Female Farmers inspecting the lines Plate 2: Male Farmers inspecting the lines . Plate. 3: Farmer selecting the lines Plate 4: Counting of scores
  • 8. PVS RESULTS IN 2011 VARIETY MALE FEMALE RESEARCHERS TOTAL (+) (-) (+) (-) (+) (-) (+) (-) IR 09L325 0 10 0 5 0 2 0 17 IR 09N505 0 0 1 2 0 1 1 3 IRRI 146 0 4 1 2 1 0 1 6 IR 05N359 1 0 1 2 0 1 2 3 IR 02A149 2 2 2 1 1 0 4 3 IR 08M110 13 0 4 2 2 1 17 3 IR 07M101 4 1 3 2 0 0 7 3 IR 06A107 0 2 0 4 0 2 0 8 IR 07A166 0 0 4 0 1 0 5 0 IR 07A167 0 1 3 1 1 0 4 2 IR 09A136 0 2 0 1 1 0 0 3 IR 03A550 0 7 0 4 0 3 0 14 IRRI 123 0 0 0 0 0 0 0 0 SARO 5 (Check 1) 0 1 0 0 0 0 0 1 SUPA BC (Check 2) 10 0 7 1 3 0 17 1 COMMENTS 1st worst 2nd best 2nd worst 1st best
  • 9. PVS RESULTS IN 2012 VARIETY MALE (+) IR 09L325 IR 09N505 IRRI 146 IR 05N359 IR 02A149 IR 08M110 IR 07M101 IR 06A107 IR 07A166 IR 07A167 IR 09A136 IR 03A550 IRRI 123 SARO 5 (Check 1) SUPA BC (Check 2) 0 0 0 1 2 13 4 0 0 0 0 0 0 0 10 FEMALE (-) 10 0 4 0 2 0 1 2 0 1 2 7 0 1 0 (+) 0 1 1 1 2 4 3 0 4 3 0 0 0 0 7 RESEARCHERS (-) 5 2 2 2 1 2 2 4 0 1 1 4 0 0 1 (+) 0 0 1 0 1 2 0 0 1 1 1 0 0 0 3 (-) 2 1 0 1 0 1 0 2 0 0 0 3 0 0 0 TOTAL (+) 0 1 1 2 4 17 7 0 5 4 0 0 0 0 17 COMMENTS (-) 17 3 6 3 3 3 3 8 0 2 3 14 0 1 1 1st worst 2nd best 2nd worst 1st best
  • 10. Results on Grain Yield GY (kg/ha) 8,000.00 7,000.00 6,000.00 5,000.00 4,000.00 3,000.00 2,000.00 1,000.00 0.00 Local check-2-… Check-1-SARO5 IR 09L325 IR 03A550 IR 02A149 IRRI 146 IR 06A107 IR 09N505 IR 07M101 IR 05N359 IR 09A136 IR 07A167 IR 07A166 IRRI 123 IR 08M110 Rice Genotypes, 2012 Check-2-SUPA BC CHECK-1-SARO 5 IR73680-3-1-14-… IR77390-6-1-18-… HHZ-15-SUB 1-… IR 09A 136 IR 06A 107 IR 07A 167 IR 05N 359 IR 06M 139 IR 04A212 IRRI 154 IR08M110 IR 07A 166 GY(kg/ha) 8000 7000 6000 5000 4000 3000 2000 1000 0 IR 77379-33-3-7-… Rice Genotypes, 2011 • Line IR 08M 110 and SUPA BC variety were selected as best genotypes in 2011, and • Lines IR 07A 166 and IR 77379-33-3-7-19-B were selected as two best genotypes in 2012
  • 11. Conclusions and Way forward Conclusions • Participatory variety selection is potentially an important tool to select suitable varieties because of the involvement of various stakeholders involved in rice production and research. • Using this approach, four elite genotypes with high grain yield potential under rain-fed and irrigated lowland conditions of Zanzibar have been selected for further testing. The Way forward Further evaluation of the selected varieties under farmers’ conditions by comparing with local varieties commonly used by the farmers before they could be recommended for wider distribution.
  • 12. Acknowledgement • ZARI • IRRI-ESA Regional Office • AfricaRice • THANKS FOR LITSENING • END