All issues

Yield and Grain Nitrogen Content in Relation to Leaf Color in Rice Cultivars TK 9 and TNG 67
Correlation coefficients between leaf color and grain yield of 2 rice cultivars at various growth stages
Correlation coefficients between leaf color and grain yield of 2 rice cultivars at various growth stages

Author:Jeng-Chung Lo* and Yi-Shin Chen

Abstract:

    This report studies the correlation relationship between the changes of leaf color during rice growth, grain yield and grain nitrogen content. Two rice (Oryza sativa L.) cultivars, TNG67 and TK9, were cultivated in the first and the second crop seasons, 2000. Three nitrogen rates (0, 90, 180 kg N ha-1) and three plant densities (11.1, 22.2, 44.4 plant m-2) were used to enlarge the variation of leaf color measured by chlorophyll meter (SPAD-520, MINOLTA). The results showed that the leaf color value in rice plant was significantly related to grain yield, especially two weeks before and after heading. The correlation between leaf color value and grain yield was closer than that of other four yield components. In addition, the leaf color in each crop season was linearly correlated to the nitrogen content of brown rice, particularly at the heading and one week later. The correlation coefficient for the first and the second crop was 0.80 to 0.91 and 0.76 to 0.79, respectively.

Key words:Rice, Leaf color, Yield, Nitrogen content

Download:Download PDF PDF Links

  • Back
  • Top
Journal of
Taiwan Agricultural Research
Vol. 72, No.3 (2023) ISSN: 2790-086X Vol. 72, No.3 (2023)
Submit your manuscript Guide for authors
Most Viewed
  • Back
  • Top