Journal article
Does reducing seed-P concentrations affect seedling vigor and grain yield of rice?
Plant and Soil
2015
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Source: InCites
Abstract
<p><h3>Aims</h3> <p id="x-x-x-x-Par1">Phosphorus (P) removed in grains causes losses of P from fields each year. Reducing grain P may therefore improve the P efficiency of cropping systems. This study quantified impacts of reduced seed-P concentrations on rice seedling vigor and final yields and investigated whether this was influenced by soil P supply or genotype. <h3>Methods</h3> <p id="x-x-x-x-Par2">Seed batches with P concentrations ranging from 0.9 to 3.5 mg g−1 were produced by growing rice in field plots ranging from severely P-deficient to fully fertilized and used in glasshouse and field experiments to investigate effects on seedling vigor and final grain/straw yield. <h3>Results</h3> <p id="x-x-x-x-Par3">‘Genotype by seed-P concentration’ interactions were significant for seedling vigor but grain yield was generally not affected. This suggested some genotypes were sensitive to reduced seed-P concentration during the seedling stage while others with seed-P concentrations as low as 0.9 mg g−1 maintained rapid early vigor and high grain yield. <h3>Conclusions</h3> <p id="x-x-x-x-Par4">Results indicate it may be possible to reduce seed-P concentrations without having negative effects on seedling vigor or yield. The development of cultivars with reduced seed-P concentration, particularly if combined with rapid seedling root growth, could be a valid option to improve the sustainability of phosphate fertilizer use.</p>
Details
- Title
- Does reducing seed-P concentrations affect seedling vigor and grain yield of rice?
- Creators
- Juan Pariasca-Tanaka - Japan International Research Center for Agricultural ScienceElke Vandamme - Africa Rice CenterAsako Mori - Japan International Research Center for Agricultural ScienceZacharie Segda - Institut de l’Environnement et de Recherches AgricolesKazuki Saito - Africa Rice CenterTerry J Rose - Southern Cross UniversityMatthias Wissuwa - Japan International Research Center for Agricultural Science
- Publication Details
- Plant and Soil
- Identifiers
- 1787; 991012820819602368
- Academic Unit
- Southern Cross Plant Science; Science; Faculty of Science and Engineering
- Resource Type
- Journal article