Thermogenesis and flowering biology of Colocasia gigantea, Araceae
Thermogenesis and flowering biology of Colocasia gigantea, Araceae
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DOI：
10.1007/s10265-007-0129-5
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发表时间：
2008-01-01
影响因子：
2.8
通讯作者：
Lebot, Vincent
中科院分区：
文献类型：
--
作者：
Ivancic, Anton;Roupsard, Olivier;Lebot, Vincent
芋的产热和开花生物学研究F. 2005年12月至2006年2月在瓦努阿图（南太平洋）的圣埃斯皮里图进行了研究。内源性产热以两种方式测量：（1）连续超过5天的时间，（2）超过3小时，在最大加热。研究表明，热量是由肉穗的雄性部分产生的，可能是不育区的下部。雄虫部分的温度有两次高峰：（1）在0625和0640之间（在雌虫阶段）和（2）24 h后（在雄虫阶段）。雌性阶段的平均最高温度为42.25 +/-0.14摄氏度（高于环境温度16.63摄氏度），雄性阶段为35.14 +/-0.22摄氏度（高于环境温度10.61摄氏度）。在不育区的下部区域，产热记录仅在女性阶段。平均最高气温为35.44 +/-0.41摄氏度（比环境温度高9.82摄氏度）。产热加热似乎与传粉昆虫的活动密切相关。
The thermogenesis and flowering biology of Colocasia gigantea (Blume) Hook. f. were studied from December 2005 to February 2006 on Espiritu Santo, Vanuatu (South Pacific). Endogenous thermogenesis was measured in two ways: (1) continuously over 5-day periods, and (2) over 3 h during maximum heating. The study showed that heat was generated by the male part of the spadix and probably the lower zone of the sterile region. The temperatures of the male part peaked twice: (1) between 0625 and 0640 (during the female phase) and (2) 24 h later (during the male phase). The average maximum temperature was 42.25 +/- 0.14 degrees C during the female phase (16.63 degrees C above the ambient temperature) and 35.14 +/- 0.22 degrees C during the male phase (10.61 degrees C above the ambient temperature). In the lower zone of the sterile region, thermogenesis was documented only during the female phase. The average maximum temperature was 35.44 +/- 0.41 degrees C (9.82 degrees C above the ambient temperature). Thermogenic heating appeared to be closely associated with the activities of pollinating insects.