Root Architecture and Genetic Variations Associated with Phosphorus Uptake in Rice
International Journal of Applied Agricultural Sciences
Volume 1, Issue 1, May 2015, Pages: 1-10
Received: May 13, 2015;
Accepted: May 25, 2015;
Published: May 26, 2015
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Alogaidi Faez, Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, UK; Present address: Field Crop Department, College of Agriculture, University of Baghdad, Baghdad, Iraq
Price Adam, Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, UK
Johnson David, Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, UK
Phosphorus (P) is a finite resource and is a major limiting factor for rice yield on a large area of World’s arable land. The main objective of this study was to investigate plant and soil P interaction in P limiting conditions. A P deficient 25/75% subsoil/sand mix was determined using pots in a preliminary experiment as to be used for screening 30 rice genotypes (Oryza sativa L.).The experiment was designed using a randomized complete block design to test if shallow and deep-rooted genotypes differ in extracting P present in soil by using rock phosphate in three treatments: when rock P was absent or embedded either in a shallow 10 cm layer or distributed homogenously in soil mix. All treatments were fed with Yoshida’s nutrient solution lacking of P (YNS-P). Results indicated that P treatment x genotype interaction was significant on shoot dry weight (SDW). The addition of rock phosphate especially in shallow 10 cm layer greatly stimulated plant growth where SDW of plants grown in homogenous P and shallow P significantly outgrew those in zero P treatment. Both P treatment and genotype affected root dry weight (RDW) and root/shoot ratio significantly. Rice from the aus subgroup grown in zero P treatment accumulated significantly more SDW than indica and japonica genotypes. In zero P treatment, the genotypes Black Gora, Rayada, Kasalath, Azucena, IAC25, Dom Sufid, Aux1Wild type, FR13A and especially Sadu Cho accumulated higher SDW relative to the others.
Root Architecture and Genetic Variations Associated with Phosphorus Uptake in Rice, International Journal of Applied Agricultural Sciences.
Vol. 1, No. 1,
2015, pp. 1-10.
H. R. von Uexku¨ll, and E. Mutert, 1995. Global extent, development and economic impact of acid soils. Plant Soil, 171: 1 – 15.
J. P. Lynch, 2005. Root architecture and nutrient acquisition. In: Bassirirad, H. (Ed.) Nutrient acquisition by plants: an ecological perspective, Ecological Studies, 181: 147–183.
A. M. Bonser, J. Lynch and S. Snapp.1996. Effect of phosphorus eficiency on growth angle of basal roots in Phaseolus vulgaris. New Phytol., 132: 281–288.
A.H. Fitter, 1991. The ecological significance of root system architecture. In: Atkinson, D. (Ed). Plant root growth. An ecological perspective. Oxford: Blackwell Scientific Publications, 229–246.
J. Lynch, 1995. Root architecture and plant productivity. Plant Physiol., 109: 7–13.
J. P. Lynch and K. Brown, 2001. Topsoil foraging: an architectural adaptation of plants to low phosphorus availability. Plant and Soil, 237: 225 – 237.
J. V. Pothuluri, D.E. Kissel, D.A. Whitney and S.J. Thien,1986. Phosphorus uptake from soil layers having different soil test phosphorus levels. Agronomy Journal, 78: 991–994.
G. Rubio, T. Walk, Z. Ge, X. Yan, H. Liao and J.P. Lynch, 2001. Root gravitropism and belowground competition among neighboring plants: a modeling approach. Annals of Botany, 88: 929 – 940.
S. E. Allen, 1989. Chemical Analysis of Ecological Materials - Second edition, pp. 41–42.
E.S.Marx, J. Hart and R.G. Stevens, 1999. Soil Test Interpretation GuideEC1478 Oregon State University Extension Service. Available from: http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/14361/ec1478.pdf;jsessionid=EEA2557B584D5A31FABC3567E3A43B64?sequence=1[accessed on 10th February 2011].
S. E. Allen, H.M. Grimshaw, J.A. Parkinson and C. Quarmby. 1974. Chemical analysis of ecological materials. 1st (Ed.) Blackwell Scientific Publications. Oxford. London.
K. L. McNally, K. L. Childs, R. Bohnert, R. M. Davidson, K Zhao, V. J. Ulat, G. Zeller, R. M. Clark, D. R. Hoen; T. E. Bureau; R. Stokowski; D. G. Ballinger; K. A. Frazer, D. R. Cox, B. Padhukasahasram, C.D. Bustamante, D. Weigel, D.J. Mackill, R. M. Bruskiewich, G. Rӓtsch, C. R. Buell, H. Leung and J. E. Leach, 2009. Genomewide SNP variation reveals relationships among landraces and modern varieties of rice. Proc Natl Acad Sci., USA 106: 12273–12278.
A. Henry, V. Gowda, R. Torres, K. McNally and R. Serraj, 2011. Variation in root system architecture and drought response in rice (Oryza sativa): Phenotyping of the Oryza SNP panel in rainfed lowland fields. Field Crop Res., 120: 205–214.
S. Yoshida, D. A. Forno, J. H. Cock and K. A. Gomez, 1976. Laboratory manual for physiological studies of rice. IRRI, Los Banos, Philippines.
H. R. Lafitte, M. C. Champoux, G. McLaren and J. C. O’Toole, 2001. Rice root morphological traits are related to isozyme group and adaptation. Field Crops Research, 71: 57–70.
M.C. Drew,1975. Comparison of the effects of a localised supply of phosphate, nitrate, ammonium and potassium on the growth of the seminal root system, and the shoot, in barley. New Phytologist,75: 479–90.
M. C. Drew,and L. R. Saker, 1978. Nutrient supply and the growth of the seminal root system in barley. III. Compensatory increases in growth of lateral roots, in rates of phosphate uptake and in response to a localised supply of phosphate. Journal of Experimental Botany, 29: 435–451.
A. H. Fitter, 1985. Functional significance of root morphology and root system architecture. In: Fitter, A. H.; D. Atkinson; D. J. Read and M.B. Useher. (Eds). Ecological interactions in soil-plant, microbes and animals. London,Blackwell, 87–106.
J. O. Hill, R. J. Simpson, A.D. Moore and D. F. Chapman, 2006. Morphology and response of roots of pasture species to phosphorus and nitrogen nutrition. Plant Soil, 286: 7–19.
H. S. Kosar, M. A. Gill, T. A. Rahmatullah and M. Imran, 2002. Solublization of tri-calcium phosphate by different wheat genotypes. Pakistan J. Agric. Sci., 39: 273–277.