前文曾报导甲烷(CH_4)对水稻幼苗根系吸收HC~(14)O_3~-的促进作用,并指出了甲烷做为新的碳源、氫給予体和能源的可能性。最近用标記甲烷(C~(14)H_4)进行的研究証明甲烷本身参加了这个碳素同化的过程,現将初步結果报告如下。供试的水稻幼苗如前文,每30株置于250毫升的密閉容器中,器內盛有50毫升0.05M. NaHCO_3的Espino培养液,pH是6.9,然后通以100毫升标記以C~(14)的甲烷(放射性比度为C~(14)H_4:CH_4=1:30,約0.07微 It has been previously reported that the methane (CH 4) promotes the uptake of HC 14 O 3 - into the roots of rice seedlings and points out the possibility of methane as a new carbon source, hydrogen donor and energy source. Recent studies with labeled methane (C ~ (14) H_4) have demonstrated that methane itself participates in this carbon assimilation process and the preliminary results are reported below. The tested rice seedlings were placed in a 250 ml sealed container with 30 ml of Espino culture broth containing 0.05 M NaHCO 3 at pH 6.9 and then labeled with 100 ml of C ~ 14) of methane (radioactivity ratio C ~ (14) H_4: CH_4 = 1:30, about 0.07 micro