%0 Journal Article %T Identification of quantitative trait loci affecting tolerance to low phosphorus in rice (Oryza Sativa L.) %A Feng Ming %A Xianwu Zheng %A Guohua Mi %A Ping He %A Lihuang Zhu %A Fusuo Zhang %J Chinese Science Bulletin %@ 1861-9541 %D 2000 %I %R 10.1007/BF02887097 %X Phosphorus (P)-deficiency in rice (Oryza. Sativa. L) may cause yield reductions. This research has been conducted to map quantitative trait loci (QTLs) for tolerance to low phosphorus stress in a doubled haploid (DH) population. By using the linkage map of this population, the QTLs for relative dry weight, relative P content and relative P utilization efficiency have been located. The results indicate that one RFLP marker located on chromosome 6 is closely associated with relative root dry weight, relative shoot dry weight and relative total dry weight, which explain 24.9%, 20.5% and 25.2% of the total phenotypic variations, respectively. Two QTLs affect relative P uptake content, which account for 20.7% of the total phenotypic variations. One micro-effect QTL has been found to be associated with relative P utilization efficiency. It is suggested that the P uptake efficiency is more associated with P efficiency. Among the secondary physiological indices of P uptake efficiency, the root dry weight is more important than others. %K rice %K phosphorus deficiency %K molecular marker %K dry weight %K phosphorus uptake content %K phosphorus utilization efficiency %U http://link.springer.com/article/10.1007/BF02887097