<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Tolerant pearlmillet (Pennisetumglaucum(L.) R. Br.) varieties to low soil P have higher transpiration efficiency and lower flowering delay than sensitive ones"^^ . "Background and aim In the West African Sahel low soil\r\nphosphorus (P) and unpredictable rainfall are major\r\ninteracting constraints to growth and grain yield of pearl\r\nmillet. Investigating the relationship between transpiration\r\nand final yield under the combined effect of water and P\r\nstress is fundamental to understand the underlying mechanisms of tolerance and improve breeding programs.\r\nMethods We conducted two lysimeter trials using 1 m\r\nlong PVC tubes (35 cm diameter) filled with a P poor\r\nSahelian soil mimicking soil profiles to assess grain and\r\nstover yield, and water use of 15 pearl millet genotypes\r\ngrown under different P (no P supply or addition of 1.5 g\r\nP tube−1) and water (well watered or terminal water\r\nstress) regimes. In experiment 2 transpiration was measured\r\ntwice a week from tube weight differences, and\r\ntranspiration efficiency (TE) was calculated as dry matter\r\n(DM) produced per kg of water transpired.Results Low soil P delayed flowering, and more so in\r\nsensitive genotypes. Later flowering of genotypes sensitive\r\nto low P made them more sensitive to terminal\r\nwater stress. Under P limiting soil, genotypes tolerant\r\nand sensitive to low P used similar amounts of water\r\n(19.8 and 21.7 kg water plant−1, respectively). However,\r\ntolerant lines transpired less water prior to anthesis\r\n(8.8 kg water plant−1) leaving more water available for\r\ngrain filling (11 kg water plant−1) while sensitive lines\r\nused 14.4 kg water plant−1 pre-anthesis, leaving only\r\n7.2 kg water plant−1 for grain filling. Low soil P decreased\r\ngrain yield by affecting seed size at harvest and\r\nits damage during seed filling overrode the effect of seed\r\nsize at sowing. Grain yield was positively correlated\r\nwith water extracted after anthesis. TE was enhanced\r\nby P supply, especially in sensitive lines, and TE was\r\nhigher in tolerant than in sensitive genotypes under low\r\nsoil P. Conclusions Pearl millet plants tolerant to low P were more resistant to the delay of flowering caused by low P soil and they presented higher transpiration efficiency.\r\nThe pattern of transpiration was important to cope with\r\nterminal water stress under different levels of P availability. Higher transpiration after anthesis, resulting\r\nfrom conservative water mechanism pre-anthesis\r\n(higher TE) and possibly by a shorter delay in flowering\r\nunder low soil P, enhanced grain yield."^^ . "2015" . . "389" . "1" . . "Springer International Publishing"^^ . . . "Plant and Soil"^^ . . . "0032079X" . . . . . . . . . . . . . . . . "H"^^ . "Falalou"^^ . "H Falalou"^^ . . "F"^^ . "Beggi"^^ . "F Beggi"^^ . . "V"^^ . "Vadez"^^ . "V Vadez"^^ . . "A"^^ . "Buerkert"^^ . "A Buerkert"^^ . . . . . . "Tolerant pearlmillet (Pennisetumglaucum(L.) R. Br.) varieties to low soil P have higher transpiration efficiency and lower flowering delay than sensitive ones (PDF)"^^ . . . . . "Tolerant pearlmillet (Pennisetumglaucum(L.) R. Br.) varieties to low soil P have higher transpiration efficiency and lower flowering delay than sensitive ones (Other)"^^ . . . . . . "Tolerant pearlmillet (Pennisetumglaucum(L.) R. Br.) varieties to low soil P have higher transpiration efficiency and lower flowering delay than sensitive ones (Other)"^^ . . . . . . "Tolerant pearlmillet (Pennisetumglaucum(L.) R. Br.) varieties to low soil P have higher transpiration efficiency and lower flowering delay than sensitive ones (Other)"^^ . . . . . . "Tolerant pearlmillet (Pennisetumglaucum(L.) R. Br.) varieties to low soil P have higher transpiration efficiency and lower flowering delay than sensitive ones (Other)"^^ . . . . . . "Tolerant pearlmillet (Pennisetumglaucum(L.) R. Br.) varieties to low soil P have higher transpiration efficiency and lower flowering delay than sensitive ones (Other)"^^ . . . . . "HTML Summary of #8995 \n\nTolerant pearlmillet (Pennisetumglaucum(L.) R. Br.) varieties to low soil P have higher transpiration efficiency and lower flowering delay than sensitive ones\n\n" . "text/html" . . . "Millets"@en . . . "Soil Science"@en . .