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Morphological characterization of some Nigerian accessions of Bambara groundnut (Vigna subterranea (L.) Verdc)

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Germplasm conservation and facilitating the utilization of existing genetic resources.
Bambara groundnut accessions for agronomic traits, yield and yield components.


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Morphological characterization of some Nigerian accessions of Bambara groundnut (Vigna subterranea (L.) Verdc)

  1. 1. www.iita.org I www.cgiar.org Morphological characterization of some Nigerian accessions of Bambara groundnut (Vigna subterranea (L.) Verdc) Osundare O.T. 1&2 , Akinyele B.O.1 , Odiyi A.C.1 , Abberton M.T.*2 , Oyatomi O.A.2 1 Department of Crop, Soil and Pest management, Federal University of Technology, Akure, Nigeria 2 Genetic Resources Center, International Institute of Tropical Agriculture, Ibadan, Nigeria *Corresponding author: E-mail: m.abberton@cgiar.org
  2. 2. www.iita.org I www.cgiar.org INTRODUCTION • Bambara groundnut is herbaceous, intermediate, annual, self-pollinating crop belonging to the family Leguminosae, subfamily Papilionoideae and genus Vigna. • Bambara groundnut (Vigna subterranea [L.] Verdc.) is an under-utilized grain legume grown in Africa.
  3. 3. www.iita.org I www.cgiar.org INTRODUCTION CONT. Research justification • Nigeria has a wide range of diversity observed on Bambara groundnut and majority of the accessions have not been fully characterized. • The use of climate resilient crops that requires little input from farmers for production and adaptable to the climate change will help in attaining food secured continent.
  4. 4. www.iita.org I www.cgiar.org Plate 1: Bambara groundnut plant: Trifoliate leaves (left); tap root system showing root nodules (middle) and seeds showing diversity (right)
  5. 5. www.iita.org I www.cgiar.org INTRODUCTION CONT. • Research objectives • To apply the descriptor for germplasm conservation and facilitating the utilization of existing genetic resources. • Evaluate Bambara groundnut accessions for agronomic traits, yield and yield components.
  6. 6. www.iita.org I www.cgiar.org MATERIALS AND METHOD
  7. 7. www.iita.org I www.cgiar.org MATERIALS AND METHOD • Design of the experiment • A total of 100 accessions of Bambara groundnut were used as plant materials (Treatment), sourced from Genetic Resources Center, International Institute of Tropical Agriculture, Ibadan. • The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications.
  8. 8. www.iita.org I www.cgiar.org MATERIALS AND METHOD • Total block size was 1,050 m2 (21 m x 50 m) and each plot was 2.5 m x 1 m. • One seed/hole was sown in a ploughed and ridged sandy loam soil on inter rows spaced 100 centimeters (cm). • Intra-rows spacing was 25 cm. This spacing was proposed to allow the crop express its production potential.
  9. 9. www.iita.org I www.cgiar.org MATERIALS AND METHOD CONT. Data collection The descriptors list of V. subterranea edited by (IPGRI/IITA/BAMNET, 2000) was used to generate both qualitative and quantitative data for agronomic and yield components. Thirty-six quantitative and qualitative traits (agronomic and seed) were considered.
  10. 10. www.iita.org I www.cgiar.org RESULTS AND DISCUSSION Traits Traits Interpretation Percentage Petiole colour whole green 66 Base purple 34 Total 100 Average of 10 seeds Seed shape Round 12 Oval 88 Total 100 Pod shape Without point 2 Ending in a point and round on the other 51 Ending in a point with nook on the other 47 Total 100 Frequency distribution of qualitative traits
  11. 11. www.iita.org I www.cgiar.org RESULTS AND DISCUSSION CONT. Traits Traits Interpretation Percentage Dry pod colour Yellowish brown 83 Brown 12 Reddish brown 5 Purple 0 Black 0 Total 100 Terminal leafletcolour Green 99 Red 0 Purple 1 Total 100 Pod texture Smooth 21 Little groove 62 Much grooved 17 Much folded 0 Total 100
  12. 12. www.iita.org I www.cgiar.org RESULTS AND DISCUSSION CONT. Traits Av. Of 10 pods Percentage Number of seeds per pod 1 44.3 Above 1 seed 55.7 Total 100 Av of ten plants Number of flowers per peduncle 1 2 Above 1 98 Total 100
  13. 13. www.iita.org I www.cgiar.org RESULTS AND DISCUSSION CONT. Accessions Trait Accessions Trait Plant spread (cm) Plant height (cm) TVSu589 34.28a TVSu2109 23.70a TVSu359 33.60ab TVSu589 23.07ab TVSu256 32.36abc TVSu2105 21.34abc TVSu572 32.25a-d TVSu572 20.64a-d TVSu350 32.21a-d TVSu670 20.53b-d TVSu179 32.20a-d TVSu129 20.51c-e TVSu12 17.60e TVSu261 10.70f Ms 31.1* Ms 13.73* MsE 15.65 MsE 3.38 Result of Analysis of variance (ANOVA) of some of the quantitative traits Mean in a column with the same letter(s) are not significantly different by DMRT (p=0.05)
  14. 14. www.iita.org I www.cgiar.org RESULTS AND DISCUSSION CONT. Accessions Trait Accessions Trait Number of leaves Petiole length (mm) TVSu1246 54.47a TVSu650 121.90a TVSu336 52.87ab TVSu670 116.50ab TVSu590 52.70ab TVSu2109 116.13bc TVSu586 51.40ab TVSu2105 113.13cd TVSu347 47.90cd TVSu285 111.87def TVSu267 67.45de TVSu129 111.70efg TVSu127 13.30f TVSu1222 46.00h Ms 189.24* Ms 577.44* MsE 90.65 MsE 169.38 Mean in a column with the same letter(s) are not significantly different by DMRT (p=0.05)
  15. 15. www.iita.org I www.cgiar.org RESULTS AND DISCUSSION CONT. Accessions Trait Accessions Trait Terminal leaflet length(mm) Terminal leaflet width(mm) TVSu579 72.40a TVSu2105 38.67a TVSu2109 69.73ab TVSu2109 36.27ab TVSu262 69.10bcd TVSu589 33.20bc TVSu359 68.93de TVSu263 31.81bcd TVSu633 68.00def TVSu267 30.47def TVSu572 67.45fg TVSu576 30.10d-g TVSu1239 27.56h TVSu365 15.53h Ms 99.45* Ms 42.12* MsE 47.43 MsE 7.75 Mean in a column with the same letter(s) are not significantly different by DMRT (p=0.05)
  16. 16. www.iita.org I www.cgiar.org RESULTS AND DISCUSSION CONT. Accessions Trait Accessions Trait Pod length (mm) Pod width (mm) TVSu589 26.41a TVSu351 14.45a TVSu368 21.90bc TVSu346 14.44a TVSu2105 21.56bcd TVSu2108 14.39ab TVSu262 21.40cde TVSu366 14.06abc TVSu2106 21.40cde TVSu271 14.03abc TVSu2104 21.12de TVSu2093 13.92abc TVSu351 12.14e TVSu576 8.75d Ms 11.39* Ms 3.69* MsE 7.95 MsE 3.8 Mean in a column with the same letter(s) are not significantly different by DMRT (p=0.05)
  17. 17. www.iita.org I www.cgiar.org RESULTS AND DISCUSSION CONT. Accessions Trait Accessions Trait Number of pods/area Yield per plot (g) TVSu14 115.00a TVSu368 34.64a TVSu662 110.33a TVSu346 30.40ab TVSu647 108.00ab TVSu181 26.28abc TVSu659 83.00cde TVSu647 24.33a-d TVSu173 76.67def TVSu14 23.18a-e TVSu176 74.00e-h TVSu2095 22.54a-f TVSu576 4.00i TVSu576 0.21g Ms 1513.42* Ms 130.88* MsE 707.80 MsE 97.28 Mean in a column with the same letter(s) are not significantly different by DMRT (p=0.05)
  18. 18. www.iita.org I www.cgiar.org RESULTS AND DISCUSSION CONT. Accessions Trait Accessions Trait 100-seed weight(g) Yield per ha (kg) TVSu271 108.66a TVSu368 138.56a TVSu368 92.18b TVSu181 105.12ab TVSu83 89.25b TVSu647 97.33abc TVSu2110 81.84c TVSu14 92.73a-d TVSu366 80.90c TVSu2095 90.17a-e TVSu2095 75.02d TVSu662 84.41a-f TVSu356 18.86e TVSu576 0.85g Ms 620.86* Ms 188840* MsE 3.13 MsE 107641 Mean in a column with the same letter(s) are not significantly different by DMRT (p=0.05)
  19. 19. www.iita.org I www.cgiar.org RESULTS AND DISCUSSION CONT. • Multivariate analysis for quantitative characters showed significant variation for most of the morphological variations for Bambara groundnut landraces, hence these could be considered important for the accessions under investigation.
  20. 20. www.iita.org I www.cgiar.org CONCLUSION • A wide range of variability was observed on the accessions of bambara groundnut conserved in IITAGRC for number of seeds per pod, terminal leaflet length and width, pod texture, pod length and width, yield per hectare, such potential could be harnessed for the purpose of crop improvement through hybridization of accessions with desired qualities.
  21. 21. www.iita.org I www.cgiar.org ACKNOWLEDGEMENT • The authors are grateful to the Head, Genetic Resources Center (Prof. M.T. Abberton) of the International Institute of Tropical Agriculture, Ibadan, Nigeria for funding this research. The cooperation of the Seed bank manager (Mr. O.A. Oyatomi) is highly acknowledged.
  22. 22. www.iita.org I www.cgiar.org Goodbye Thank you for listening

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