Sepehr, E., Malakouti, M., Kholdbarin, B., Karimian, N., Samadi, A., Rasouli, M., Nourgholipour, F., Rezaei, H., Khademi, Z. (2010). Evaluation of Phosphorus Efficiency in Cereals. , 23(2), 125-134. doi: 10.22092/ijsr.2010.126662
E. Sepehr; M. J. Malakouti; B. Kholdbarin; N. Karimian; A. Samadi; M. H. Rasouli; F. Nourgholipour; H. Rezaei; Z. Khademi. "Evaluation of Phosphorus Efficiency in Cereals". , 23, 2, 2010, 125-134. doi: 10.22092/ijsr.2010.126662
Sepehr, E., Malakouti, M., Kholdbarin, B., Karimian, N., Samadi, A., Rasouli, M., Nourgholipour, F., Rezaei, H., Khademi, Z. (2010). 'Evaluation of Phosphorus Efficiency in Cereals', , 23(2), pp. 125-134. doi: 10.22092/ijsr.2010.126662
Sepehr, E., Malakouti, M., Kholdbarin, B., Karimian, N., Samadi, A., Rasouli, M., Nourgholipour, F., Rezaei, H., Khademi, Z. Evaluation of Phosphorus Efficiency in Cereals. , 2010; 23(2): 125-134. doi: 10.22092/ijsr.2010.126662

Evaluation of Phosphorus Efficiency in Cereals

پژوهش های خاک
Volume 23, Issue 2, March 2009, Pages 125-134    PDF (256.37 K)
Document Type: Research Paper
DOI: 10.22092/ijsr.2010.126662
Authors
E. Sepehr* 1; M. J. Malakouti2; B. Kholdbarin3; N. Karimian4; A. Samadi5; M. H. Rasouli6; F. Nourgholipour7; H. Rezaei7; Z. Khademi7
1PhD Student of Soil Science, Fculty of Agriculture, Tarbiat Modares University, and Scientific Staff of Soil and Water Research Institute (SWRI), Tehran
2Professor, of Soil Science, Fculty of Agriculture, Tarbiat Modares University, Tehran, Iran
3Professor, of Plant Biology, Fculty of Science, Shiraz University, Shiraz, Iran
4PrProfessor, of Soil Science, Fculty of Agriculture, Shiraz University, Shiraz, Iranofessor, Department of Soil Science, College of Agriculture, Shiraz University
5Associate Professor, of Soil Science, Fculty of Agriculture, Urmia University, Urmia, Iran
6Assistance Professor, of Soil Science, Fculty of Agriculture, Urmia University, Urmia, Iran
7Scientific Staff of Soil and Water Research Institute (SWRI), Karaj, Iran
Abstract
A factorial completely randomized block design experiment with 3 replications was carried out in the greenhouse to evaluate cereals genotypic variation in phosphorus acquisition and utilization during 2006. Treatments consisted of 8 bread wheat (Triticum aestivum L.), 3 durum wheat (Triticum durum L.), 3 barley (Hordeum vulgare L.), 1 rye (Secale cereale L.), 1 oat (Avena sativa L.) and 1 Triticale (X Triticosecale L.), and two levels of P (0 and 84 mg P/kg soil). Genotypes showed significant differences in number of tillers, shoot P concentration and content, and dry weight. Also, P efficiency (taken as the relative above-ground yield) significantly differed among genotypes and ranged from 0.42 for a barley line (M- 80-16) to 0.97 for bread wheat cultivar (Azadi) with the average of 0.71. Application of P significantly increased shoot P concentration and content from 0.19% and 13.24 mg P/pot to 0.47% and 46 mg mg P/pot, respectively. In treatment P0, durum wheat (Yavaroos) with 20.15 mg P/pot and a barley line (M-80-16) with 5.85 mg P/pot had the highest and lowest P uptake, respectively. Oat produced the highest dry weight per unit of P uptake and, hence, was considered to be very efficient in P utilization. Azadi and Yavaroos with 0.45 and 0.43 had the highest relative P uptake, respectively. Therefore, these varieties were efficient in P acquisition. There was no correlation between P efficiency and shoot P concentration of genotypes, but the relationship between P efficiency and shoot P content was highly significant (r= 0.66**).
Keywords
Cereal; Phosphorus Efficiency; Phosphorus Acquisition; PhpsphorusUtilization
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