• 作者： 陳忠謀; 陳其昌
• 作者服務機構： 國立臺灣大學植物研究所
• 中文摘要： 以含5-甲基色胺酸的分化培養基培養水稻的花粉癒合組織，得到三棵外形與正常植株不同的水稻。其中兩棵的體細胞癒合組織對5-甲基色胺酸仍然具有抗性，顯示它們是抗5-甲基色胺酸的突變體。另一棵水稻的外形特徵不僅與前兩棵突變體相同，而且自花受粉能栘傳給其後代。因此，推測第三棵水稻也是抗5-甲基色胺酸的突變體。關於這些突變體的細胞內胺基酸含量，它們對5-甲基色胺酸的抗性機制，以及該抗性的遺傳方式，正在進一步研究中。
• 英文摘要： Cell lines of rice (Oryza sativa L.) resistantto 5-methyltryptophan were selected from pollencalli by culturing them on a medium containingthis analog. Six plants were regenerated fromthe resistant cell lines, but only three survivedand grew to maturity. These plants weremorphologically very similar, but differed fromthe normal plants in a number of characteristics.Callus cultures reinitiated from the somatictissues of two of these plants were resistant to5-methyltryptophan. Callus of the third plantwas not available for test for resistance to theanalog. However, the morphological character-istics of this plant appeared to be transmissiblethrough self-pollination.
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