作者：林再發、許志聖

　　 以 KOH 浸泡葉片法測定臺農 71 號、臺中秈 10 號及其雜交第一代、第二代集團，証實臺農 71 號為香米品種，其香味為一對隱性基因控制，在臺農 71 號與臺中秈 10 號、臺中秈糯 1 號雜交第二代的植株出現秈稻形態者較多，且具有早熟及株高較高的現象，另以臺中秈 10 號回交的第二代集團中，具有株高及抽穗日數接近臺中秈 10 號的植株，有較高選拔效果。回交後代所選拔之單株再以人為聞白米的方式作為香味選拔，在臺中秈 10 號 // 臺農 71 號 / 臺中秈 10 號第二代所選的 48 株單株中有 11 株具有香味單株，在臺中秈 10 號 // 臺農 71 號 / 臺中秈糯 1 號第二代所選的 28 株單株中有 3 株具有香味單株。各香味單株透明度良好，心腹白很少。

關鍵字： 水稻、香味。

　　 Tainung 71 is an aromatic rice. Genetic study revealed that the aromatic characteristic of Tainung 71 was controlled by one recessive gene according to KOH soaking rice leaf method. From the phenotype, plants in F2 generation showed more close to indica than japonica in the crosses between Tainung 71 and Taichung Sen 10, Taichung Sen glutinous 1. Moreover, it had early maturing day and higher plant height than Taichung Sen 10. The plant height and maturing day of back cross to Taichung 10 were near to Taichung Sen 10. There were 11 aromatic selection lines according to smell milled rice within 48 elite plants of Taichung Sen 10 // Tainung71 / Taichung Sen 10. In addition, 3 aromatic selection lines were from 28 elite plants of Taichung Sen 10 // Tainung 71 / Taichung Sen Glutinous 1. Those aromatic selection lines had good translucency but had less white center and white belly.

Key words: rice, aroma.