Abstract
Although phosphate acquisition efficiency (PAE) is of considerable agricultural importance, little is known about its inheritance. The objective of this study was to determine the inheritance of PAE-related morphological and physiological traits in Arabidopsis thaliana. C24 and Col-O, two Arabidopsis accessions differing in their abilities to acquire phosphate from hydroxyl phosphate, were crossed. The resulting hybrid showed superior acquisition of phosphate from hydroxylapatite when compared with either parent. The data suggest that the superiority of the F1 hybrid is due to the accumulation of favourable dominant genes at numerous loci. The hybrid inherited the long root hair length trait from C24 and the long root length trait of Col-O. In addition, the hybrid inherited enhanced phosphate transporter expression from C24. The analysis of morphological and physiological traits in this hybrid will be useful for evaluating and predicting PAE performance in other plant species.
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Narang, R.A., Altmann, T. Phosphate acquisition heterosis in Arabidopsis thaliana: a morphological and physiological analysis. Plant and Soil 234, 91–97 (2001). https://doi.org/10.1023/A:1010545101345
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DOI: https://doi.org/10.1023/A:1010545101345