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Journal of Botany
Volume 2014 (2014), Article ID 159457, 5 pages
http://dx.doi.org/10.1155/2014/159457
Research Article

Effects of pH, Photoperiod, and Nutrient on Germination and Growth of Calymperes erosum C. Muell. Gemmaling

Department of Botany, Obafemi Awolowo University, PMB 013, Ile-Ife, Nigeria

Received 30 September 2014; Revised 10 December 2014; Accepted 16 December 2014; Published 31 December 2014

Academic Editor: Curtis C. Daehler

Copyright © 2014 Anthony Zinno Ogbimi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Effects of pH, photoperiod, and substrate nutrient concentration on the rate of germination of the gemmae and primary protonema growth of Calymperes erosum C. Muell. were studied. There was a statistically significant difference in germination of C. erosum gemmae and protonema growth among the different substrate pH levels, photoperiod treatments, and substrate nutrient conditions, respectively (). Gemmae germination and protonemal growth peaked at pH 4 and 5. Protonemal growth was retarded at pH 2, 3, 6, and 7. No germination was observed in continuous darkness. Germination and protonema growth increased significantly () within the first 3 and 6 hours of daylight but not again until after 9 and 12 hours of exposure, respectively. No statistical () increase in germination and protonemal growth was observed when the nutrient concentration was increased from 25% to 200%. Results indicate the moss is adapted to low nutrients and that it may germinate well at substrate pH as low as 2 howbeit the probability of establishment will remain limited until pH levels improve to 4 or 5. Furthermore, the moss is able to achieve net photosynthetic carbon gain during morning hours. Recovery from photoinhibition is likely by evening.