Regulation of flowering time using temperature, photoperiod and spermidine treatments in Anoectochilus roxburghii.

Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology
Tingting HanQingsong Shao

Abstract

This study investigated the effects of different temperatures, photoperiods and spermidine concentrations on the flowering time regulation of Anoectochilus roxburghii by measuring changes in the soluble sugar, soluble protein, malondialdehyde and proline contents, and the peroxidase, superoxide dismutase and catalase activities in A. roxburghii flower buds. The flowering time could be advanced under 25/20 °C (day/night), 16/8-h (day/night) long day conditions or low spermidine concentrations. The plants grew more rapidly and flowering rates were greater. The flowering time could be delayed under a low temperature of 20/15 °C or 8/16-h short day conditions, resulting in a low flowering rate. Under a high temperature of 30/25 °C or high spermidine concentrations, the plants could not flower normally and even died. There were significant differences in the seven measured indices among the various treatments. Thus, different treatments had significant effects on the flowering time regulation and flowering quality of A. roxburghii, providing a reliable theoretical basis for further studies on the flowering-related regulatory mechanisms of A. roxburghii.

References

Jun 12, 2004·Plant Physiology and Biochemistry : PPB·Ana Paula A VazGilberto B Kerbauy
Aug 13, 2005·The International Journal of Developmental Biology·Israel AusínJosé-Miguel Martínez-Zapater
Jul 15, 2006·PLoS Genetics·Sureshkumar BalasubramanianDetlef Weigel
May 7, 2013·Journal of Experimental Botany·Hoong-Yeet Yeang
Aug 10, 2013·Journal of Experimental Botany·Takeshi KurokuraTimo Hytönen
Nov 7, 2017·Journal of Experimental Botany·Rainer Melzer

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