稻米品質比較試驗（II）

Abstract

民國56年擴大試驗調查範圍，由全省各地採集水稻梗米重要品種（原種），一期23品種49品樣，二期22品種33品樣，就糙米進行品質有關之成份分析，所得成績概要如見於表一~表二。 本年度成績結果略與55年度所得者同。即在來種蛋白量及顆粒澱粉比特別高，而可溶固形物量即全般的較為低等，顯見品種因素對成份品質之影響甚大。在本年度調查成績，尚發現環境因素對稻米成份品質有關，如北部地區產之純日本型稻蛋白量之奇高及其顆粒澱粉比之未如理想等，似應歸地方性之影響。 綜合55，56二年間調查成績，即知蛋白與灰份．澱粉及顆粒澱粉有關；至於其他成份，雖可溶固形物量對顆粒澱粉比影響甚鉅，但其相關不大顯著固定，應俟日後試驗研討，始得決定之。

An extensive survey on the quality of rice in Taiwan was conducted in 1967. Forty-nine samples of twenty three varieties in first crop and thirty-three samples of twenty-two varieties in second crop were collected from every district and chemical analyses were made on the brown rice. The results were shown in Table 1-2. A same phonomenon, as got in 1966, was observed in this year. The extremely high amylose ratio and higher protein content were detected with the native rice again. The quality of rice, so far as amylose ratio and protein content concerned, is prince-pally affected by its variety; even so, there were some effects observed with locality, for instance, the rice produced in northern district had higher amylose ratio and protein content. Although the amylose ratio correlated with protein content, comparing the data obtained in these two years, it was expected that the amylose-amylopectin ratio should be mainly influenced by the quantity of soluble solid. By screening with variety and locality, just thirty samples of twenty varieties were selected both from first and second crops, and a Table for comparison is presented as Table 5. With these thirty samples, significant correlationships were secured between protein and the other constituents, namely, starch (-), ash (+) and amylase-ratio (+) correlate with protein, respectively.