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RESPONSE OF DIFFERENT RICE GENOTYPES TO PHOSPHORUS DEFICIENCY | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 19, Issue 6, 2014, Pages 0-0 | ||
| Authors | ||
| F. F. Alogaidi; A. H. Price; D. Johnson | ||
| Abstract | ||
| Phosphorus (P) deficiency limits plant production in many soils worldwide even when P is added. It has long been known that genotypic differences for P deficiency tolerance exist in rice. The main objective of this study was to investigate plant and soil P interactions in P deficient conditions. Using pots in a preliminary experiment, a 25/75% subsoil/sand mix was determined as a P deficient to be used for screening 30 rice genotypes (Oryzasativa L.). During June2011, a box experiment when watered with Yoshida’s nutrient solution (YNS) either with (YNS+P) or without P (YNS-P) was designed using a randomised complete block designto assess whether rice genotypes differ in extracting P added in liquid form. Results indicated that P treatment x genotype interaction was significant on shoot dry weight (SDW). On average, YNS-P treatment significantly reduced the SDW for genotypes compared to that of plants grown in YNS+P treatment. Rice genotypes from theaus subgroup grown in -P treatment accumulated significantly more SDW than indica and japonica genotypes. In -P treatment, the genotypes that accumulated higher SDW relative to the others were Black Gora, Rayada, Kasalath, Azucena, IAC 25, Dom Sufid, Aux1Wild type, FR 13A and especially Sadu Chowhich can be used in breeding program. | ||
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