Role of the Hull in the Ripening of Rice Plant : VII. Effects of supplying of silica and potassium during reproductive growth stage on the form and function of hulls
Year: 1983
Type: article
Abstract: Previously, silica and potassium were shown to accumulated in the hulls of fertile grains than those of sterile ones. Based on these findings, effects of supplying of silica and potassium during reproductive growth stage on the form and function of hulls were further studied. And the effects of top dressing of new fertilizer "potassium silica" were also investigated. 1. Silica. (a) No significant difference in the number of spikelets on the primary branches of panicle was detected between no-supplying and supplying plot, whereas the number of spikelets on the secondary branches was increased by the supplying of silica. (b) Ripening percentage and weight of 1000 kernels increased significantly by supplying of silica. This might be due to the increase in the size of hulls and the decrease in the occurrence of malformed grains. (c) The silica content in hulls increased greatly by the supplying of silica. 2. Potassium. Supplying of potassium during reproductive growth stage gave mostly the same effect as those of silica, however the difference in potassium content was very small between no-supplying and supplying plot. 3. New fertilizer "potassium silica" The top dressing of potassium silica, a new fertilizer, at initial stage of spikelets differentiation enhanced the ripening percentages and weight of 1000 kernels due to the decrease in the occurrence of malformed grains. As shown above, silica and potassium affect the form and function of hulls and were very useful and important to increase ripening.
Source: Japanese Journal of Crop Science
DOI: 10.1626/jcs.52.73
Authors: Seok Weon SEO, Yasuo OTA
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2516868092