Pollen Germination and Tube Growth: Dependent on Carbon Dioxide and Independent of Ethylene | Zendy

Evangelos Sfakiotakis | Zendy; D. H. Simons | Zendy; David R. Dilley | Zendy

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Pollen Germination and Tube Growth: Dependent on Carbon Dioxide and Independent of Ethylene

Author(s) -

Evangelos Sfakiotakis,

D. H. Simons,

David R. Dilley

Publication year - 1972

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.49.6.963

Subject(s) - germination , pollen tube , pollen , ethylene , carbon dioxide , tube (container) , biology , botany , pollination , materials science , biochemistry , ecology , composite material , catalysis

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.

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