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Seed yield, oil and phytate concentration in the seeds of two oilseed rape cultivars as affected by different phosphorus supply |
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| Authors: | T Lickfett B Matthus L Velasco C Mllers |
| Institution: | a Institute for Agricultural Chemistry, University of Goettingen, Von-Siebold-Str. 6, 37075 Goettingen, Germany b Institute for Chemistry and Physics of Lipids, Federal Centre for Cereal, Potato and Lipid Research in the Alliance Product and Nutrition Research, Piusallee 68/76, 48147 Münster, Germany c Institute of Agronomy and Plant Breeding, University of Goettingen, Von-Siebold-Str. 8, 37075 Goettingen, Germany |
| Abstract: | A greenhouse pot experiment was conducted for studying seed and oil yield, P uptake and phytate concentration in the seed of two oilseed rape cultivars (Brassica napus L. var. Oleifera, cv. Bristol and cv. Lirajet), grown on a soil substrate at different levels of plant available phosphorus (6, 19, 31 and 106 mg P-CAL kg?1 soil, resp.). All other nutrients were maintained at a high level. At maturity, seed yield and seed quality were investigated. An increase in the phosphorus soil supply resulted in a significant (P<0.05) increase in seed and oil yield, oil and P concentration of the seeds, and P transported to the seeds. The phytate-phosphorus concentration ranged from 0.5 to 6.9 g kg?1 in the seeds and from 0.9 to 12.8 g kg?1 in rapeseed meal. Insufficient P supply resulted in a reduced concentration of phosphorus and phytate in the seeds. Significant interactions between the factors cultivar and P supply were found for the traits seed yield, oil yield, and P-harvest index. |
| Keywords: | Oilseed rape Phosphorus supply Phytate Yield formation |
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