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Annals of Botany 41: 1205-1209, 1977
© 1977 Annals of Botany Company

RESEARCH-ARTICLE

Coleoptile Emergence in Rice Seedlings in Different Oxygen Environments

H. A. KORDAN

Department of Plant Biology, University of Birmingham Birmingham B15 2TT

Received: 21 October 1976   

Coleoptile emergence precedes primary root emergence in rice seeds germinated under stagnant or continuously-aerated water or in normal air. This pattern of rice seed germination in oxygen-poor as well as in normal oxygen environments differs from previous descriptions in the literature that the primary root emerges first when germination occurs on a well-drained substratum whereas the coleoptile emerges first during germination under water. Evidence is presented here that the rice coleoptile provides a primary morphological region for oxygen entry into germinating rice seeds.


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