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Towards understanding the traits contributing to performance of pearl millet open-pollinated varieties in phosphorus-limited environments of West Africa

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Relation http://oar.icrisat.org/8952/
http://dx.doi.org/10.1007/s11104-015-2636-9
10.1007/s11104-015-2636-9
 
Title Towards understanding the traits contributing to performance of pearl millet open-pollinated varieties in phosphorus-limited environments of West Africa
 
Creator Gemenet, D C
Beggi, F
Hash, C T
Sy, O
Sanogo, M D
Zangre, R G
Falalou, H
Buerkert, A
Haussmann, B G
 
Subject Pearl Millet
 
Description Aims
Pearl millet [Pennisetum glaucum (L.) R. Br.] open-pollinated varieties, which are the predominant cultivars, have never been systematically evaluated for adaptation to low-soil phosphorus (P), a major constraint on pearl millet production in West Africa (WA).
Methods
We evaluated grain yield (GY), flowering time (FLO), harvest index (HI), and residual grain yields (RGY) of 102 open-pollinated varieties from WA under low-P (−P) and high-P (+P) field conditions in six environments of WA. In addition, PE-related traits of the varieties were evaluated at early growth stage in a pot experiment.
Results
Significant genetic variation was observed for GY, FLO, HI and PE-related traits. P-efficient varieties had higher yield under −P conditions. Varietal performance under −P varied across environments depending on FLO, relative flowering delay under −P (FD) and RGY measured in the field. Low-P-susceptible varieties had higher FLO, lower HI than low-P-tolerant varieties. Response to direct selection under −P field conditions was 20.1 g m−2, whereas indirect selection response under +P was 16.3 g m−2.
Conclusions
Selection under −P field conditions while taking into account seasonal variations for FLO, FD and PE is expected to be important for improving GY specifically targeting −P environments in WA.
 
Publisher Springer International Publishing
 
Date 2016-10-18
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/8952/1/art%253A10.1007%252Fs11104-015-2636-9.pdf
Gemenet, D C and Beggi, F and Hash, C T and Sy, O and Sanogo, M D and Zangre, R G and Falalou, H and Buerkert, A and Haussmann, B G (2016) Towards understanding the traits contributing to performance of pearl millet open-pollinated varieties in phosphorus-limited environments of West Africa. Plant and Soil, 407 (1-2). pp. 243-259. ISSN 0032-079X