|Title:||水稻葉色與葉片全氮濃度之品種間差異||Other Titles:||Varietal Difference in Coloration and Nitrogen Content of Leaf Blades in Rice||Authors:||蔡金川
|Issue Date:||11-Sep-1982||Publisher:||農業試驗所||Journal Volume:||31||Journal Issue:||3||Start page/Pages:||246-253||Source:||中華農業研究||Abstract:||
Fifteen Japonica and 15 Indica varieties were grown under natural conditions at the experimental field of Taiwan Agricultural Research Institute in Wufeng, Taichung, for investigating their leaf colors and nitrogen contents in leaf blades at 4 stages, i. e. booting, heading, 10 and 20 DAH (days affer heading)
The degrees of leaf color and nitrogen contents in leaf blades of 30 rice varieties were all significant at 1% level in both crop seasons in both Japonica and Indica type rices. The highly positive correlations between the leaf color and nitrogen content in leaf blades were found at all stage except 20 DAH. The correlation coefficients in the Japonica varieties were higher than those in Indica varieties at all four stages. The booting stage showed the highest positive correlation coefficient, which rapidly decreased after heading. No significant differences in correlation coefficient were found in Indica varieties on the 20th day after heading in both crop seasons. It may be due to the yellowing of the leaf or senescence. According to this results, it seems that the leaf color determination is useful to estimate the nitrogen content in leaf blades or to diagnose the nutrition status of rice plants. Although in some varieties such as Toyonishiki and Taichung sen no. 10, the leaf color did not correspond well with the nitrogen content in the leaf blades.
|Appears in Collections:||1.台灣農業研究(1950～迄今)|
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