The photoperiodic control of flowering in Saccharum
| MSI99P0556 | |
| Julien, M. H. R. | |
| The photoperiodic control of flowering in Saccharum | |
| periodical article | |
| 1972 | |
| Proc. int. Soc. Sug. Cane Technol. | |
| 14: 323-333 | |
| EN | |
| En | |
| Flowering in 2 clones of Saccharum spontaneum and 1 clone of S. robustum was found to be controlled by photoperiod. In the 2 S. spontaneum clones the earliest stages of development, induction and initiation of inflorescence axis primordium, required intermediate days of about 12 hr, 30 min, while the subsequent stage - initiation of inflorescence branch primordia - had a short day response, with a critical photoperiod 13 hr. The final stages - initiation of spikelet primordia and growth - were quantitative short day responses with optimum photoperiods of 11 hr and 9 hr respectively. In the S. robustum clone all stages were short day responses with gradually shortening critical photoperiods from induction to growth. At all stages of development in the 3 clones the presence of young leaves was necessary for the perception of the photoperiodic stimulus. The effects of inductive short or intermediate day cycles could be annulled by night-break treatments; it was shown that red and green were the effective wavebands. It is clear that normal floral development in these Saccharum clones requires a precise sequence of photoperiods. The relevance of this for the manipulation of date of flowering in breeding material is discussed. | |
| SUGARCANE FLOWERING PHOTOPERIODISM DEVELOPMENT PHYSIOLOGY | |
| MAURITIUS | |
| Sugarcane: Physiology | |
| Physiology and development | |
| 1992-03-02 | |
| En | |
| Mauritius Sugar Industry Research Institute | |
| LIB | |
| CAT | |
| PB |