花粉萌发和管生长：依赖于二氧化碳，不依赖于乙烯。
Pollen germination and tube growth: dependent on carbon dioxide and independent of ethylene.
机构信息
Department of Horticulture, Michigan State University, East Lansing, Michigan 48823.
出版信息
Plant Physiol. 1972 Jun;49(6):963-7. doi: 10.1104/pp.49.6.963.
The influence of ethylene and CO(2) on pollen germination and tube growth was investigated employing ventilated culture systems. Ethylene had no effect on pollen germinability or tube growth. Germinating pollen did not produce a detectable amount of ethylene (less than 0.1 nl/g.hr). Supplementing the cultures with CO(2) caused a marked increase in germination and tube growth. The half-maximal response for germination was less than 0.5%. CO(2) levels ranging from 1.08 to 2.22% were found in the internal cavity of lily styles. CO(2) derived from stylar metabolism may, therefore, modulate pollen tube growth thus integrating the events leading to fertilization.
采用通风培养系统研究了乙烯和 CO(2) 对花粉萌发和花粉管生长的影响。乙烯对花粉萌发率或花粉管生长没有影响。萌发花粉未产生可检测量的乙烯（小于 0.1 nl/g.hr）。向培养物中添加 CO(2) 会导致萌发和花粉管生长明显增加。萌发的半最大响应小于 0.5%。在百合花柱的内腔中发现 CO(2) 水平在 1.08 到 2.22%之间。因此，来自花柱代谢的 CO(2) 可能调节花粉管生长，从而整合导致受精的事件。
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