研究彙報第六十五期 ， Page 1-11，出版時間：1999- 12， 詳細內容
The purpose of this study was to investigate the variability of crude protein content of rice and to explore the factors affecting them. Results showed significant difference in crude protein content among varieties, seasons and locations. Crude protein content was generally higher in early maturity japonica rice, glutinous rice and indica rice compared to medium-late maturity japonica rice. Crude protein content in the second crop was higher than that in the first crop. It was also noted that crude protein content in the second crop of 1998 was higher than that of 1997.
The crude protein content of rice from Peitou had the highest for Tai Keng 9 and Tai Keng 14, but from Tsaotun the highest were Tai Keng 15, Tai Keng 16 and Tainung 67. Crude protein content also increased with an increase in the amount of nitrogen fertilizer and in diseased lesion area of bacterial leaf blight of rice plants.
Comparing rice grain quality in Tachia, the results showed that there was a variation of crude protein content among rice samples. The average crude protein of brown rice was higher than that of milled rice. There was also a positive correlation between the crude protein content of brown rice and milled rice. The results can provide farmers, breeders, processors and testers to improve rice grain quality.
Key words: rice, crude protein content.