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27.08.2014PSP5 - 2014 Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level Willmar L. Leiser, Henry Frederick W. Rattunde,

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Presentation on theme: "27.08.2014PSP5 - 2014 Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level Willmar L. Leiser, Henry Frederick W. Rattunde,"— Presentation transcript:

1 PSP Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level Willmar L. Leiser, Henry Frederick W. Rattunde, Eva Weltzien, Ndiaga Cisse, Magagi Abdou, Abdoulaye Diallo, Abocar O. Touré, Barbara Hufnagel, Jurandir V. Magalhaes and Bettina I.G. Haussmann

2 PSP Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level Mueller et al. 2012; Nature;490;7419; Fertilizer Input West Africa Highly weathered soils, low pH, low soil organic matter and high P fixation most smallholder farmers fields show very low levels of plant available soil P (<6ppm Bray-1 P) fields, which are cropped by women show generally even lower values (<3ppm Bray-1 P)

3 PSP Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level 8 Genotypes Year Genotypes Year Genotypes Year Genotypes Year Genotypes Year Genotypes Year Genotypes High P (>20kg P)vsLow P (0kg P) 29 (48) useful field trials + pot experiment + extra field trials 3

4 PSP Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level ~ 10% delay in flowering~ 30% plant height reduction 4

5 PSP Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level More than 50% yield reduction 5

6 PSP Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level 6 strong correlation between –P and +P grain yield performance direct selection necessary, feasible and more efficient Leiser et al., Crop Science

7 PSP Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level 7 Landraces are important source germplasm No single adaptation mechanism identified YieldP-uptake P-conc. P-use Leiser et al., Plant and Soil

8 PSP Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level GWAS for grain yield BLUPs of 187 WCA sorghum genotypes evaluated across 29 environments in three West African countries from ,934 SNPs derived from Genotyping-by-Sequencing (GBS). 8 Leiser et al., BMC Plant Biology

9 PSP Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level 9 Possible pleiotropic effect of SbMATE on Al-tolerance and P-efficiency Leiser et al., BMC Plant Biology

10 PSP Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level Gamuyao et al. 2012; Nature; 488;7412; exploiting genomic synteny of rice and sorghum homologous genes for PSTOL1 in sorghum identified Hufnagel et al., 2014, Plant Physiology

11 PSP Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level BrazilWest Africa 11 Hufnagel et al., 2014, Plant Physiology PSTOL1 involved in P-efficiency in sorghum through possibly similar mechanism as in rice Sb03g006765_1912 Sb03g031690_2305 SNPs in PSTOL1 genes

12 PSP Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level Large impact of P on sorghum growth General good adaptation of West African sorghum to low P soils Direct selection in low P necessary and feasible Landraces very valuable source germplasm No single mechanism identified for P-efficiency Al-tolerance and P-efficiency possibly controlled by same gene SbMATE  pleiotropy PSTOL1 homologs of rice involved in P-adaptation in sorghum; similar mechanism 12

13 PSP Breeding Sorghum for P-limited Soils in Western Africa: From Field to Gene Level 13


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