caa a22 4500 477110487 CHVBK 20180405111607.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF00011587 doi (NATIONALLICENCE)springer-10.1007/BF00011587 Variation in acquisition of soil phosphorus among wheat and barley genotypes [Elektronische Daten] [Tara Gahoonia, Niels Nielsen] To assess the extent of variation in phosphorus acquisition efficiency of some winter wheat (Triticum aestivum L.), winter and spring barley (Hordeum vulgare L.) genotypes, depletion of inorganic phosphorus (P) extractable with 0.5 M NaHCO3 (NaHCO3-Pi) from the rhizosphere soil was studied. Nutrients supply, rhizosphere soil pH and soil water content was kept equal for all the genotypes with the aim to reduce the confounding variation due to these factors. The experimental set up implied that no difference in the relative growth rates, nitrogen, potassium and calcium content of shoot dry matter occurred among the genotypes. The winter wheat, winter barley and spring barley genotypes differed significantly (p>0.05) in their efficiency to acquire NaHCO3-Pi from the rhizosphere soil. The efficiency of the winter wheat genotypes to acquire NaHCO3-Pi from rhizosphere soil ranked Kraka > Gawain > Foreman > Sleipner = Obelisk > Kosack > Pepital > Arum. Winter wheat genotypes differed in extent of P depletion profiles in the rhizosphere, indicating variation in root hair length. The winter barley and spring barley genotypes also showed significant differences in their P depletion profiles near roots. The efficiency of the winter barley genotypes to acquire soil P in the rhizosphere ranked Hamu > Frost > Marinka > Astrid > Clarine = Angora. The efficiency of spring barley genotypes to acquire NaHCO3-Pi in the rhizosphere ranked Canut > Etna ≅ Riga > Digger > Peel > Semal > Alexis. The rhizosphere pH remained unchanged, suggesting that additional mechanisms such as root hair formation and root exudates play a significant role in causing variation in P acquisition among the genotypes. Kluwer Academic Publishers, 1996 barley nationallicence cultivar nationallicence acquisition efficiency nationallicence rhizosphere nationallicence root hairs nationallicence wheat nationallicence Gahoonia Tara Section for Soil, Water and Plant Nutrition, Department of Agricultural Sciences, The Royal Veterinary and Agricultural University, Thorvaldsensvej 40, DK-1871, Frederiksberg C, Copenhagen, Denmark aut Nielsen Niels Section for Soil, Water and Plant Nutrition, Department of Agricultural Sciences, The Royal Veterinary and Agricultural University, Thorvaldsensvej 40, DK-1871, Frederiksberg C, Copenhagen, Denmark aut Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl 178/2(1996-01-01), 223-230 0032-079X 178:2<223 1996 178 11104 https://doi.org/10.1007/BF00011587 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00011587 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gahoonia Tara Section for Soil, Water and Plant Nutrition, Department of Agricultural Sciences, The Royal Veterinary and Agricultural University, Thorvaldsensvej 40, DK-1871, Frederiksberg C, Copenhagen, Denmark aut NATIONALLICENCE 700 1- Nielsen Niels Section for Soil, Water and Plant Nutrition, Department of Agricultural Sciences, The Royal Veterinary and Agricultural University, Thorvaldsensvej 40, DK-1871, Frederiksberg C, Copenhagen, Denmark aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl// 178/2(1996-01-01), 223-230 0032-079X 178:2<223 1996 178 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer