Journal of Taiwan Agricultural Research

Author:Tzu-Che Lin, Wei-Ting Liu, Kuo-Yi Huang, Jih-Min Sung, Charang-Pei Li, Dong-Hong Wu, and Ming-Hsin Lai*

Abstract:

    A software was developed to feature the grain’s shape through digital images taken during grain filling stage in this study. First top 2^nd, 3^rd, 4^th and 5^th single grain sampled from top 5 primary branches of each panicle were collected for image analysis in 7, 14, 21, 28, 35, 42 days after heading for rice cultivar ‘TNG67’. The results were shown that there are more significant differences on grain shape during filling stage in inner husk than outer husk, and there is no significant difference in outer husk after heading date. Main differences of contour were observed in thickness of grain, and increased dramatically from the 7^th day after heading date. There were most significant differences between 105–150 degree of angle in inner husk, and increasing thickness was observed as grains’ filling time increased. The high throughput and efficient method was developed for featuring contour of rice grain by image software to evaluate the differences of grain shape during the filling stage.

Key words:Rice, ‘TNG67’, Grain filling stage, Primary branches, Image analysis

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