Stolon characteristics and tuber initiation in a wild potato species (Solanum demissum Lindl.) |
| |
| Authors: | Hans Helder Arie van der Maarl Dick Vreugdenhil Paul C Struik |
| |
| Institution: | (1) Department of Plant Physiology, Wageningen Agricultural University, Arboretumlaan 4, 6703 BD Wageningen, the Netherlands;(2) Department of Agronomy, Wageningen Agricultural University, Haarweg 333, 6709 RZ Wageningen, the Netherlands |
| |
| Abstract: | Summary
Solanum demissum Lindl. is a short-day dependent, tuber-bearing species. In vitro propagated genetically identical plants were grown under
long-day (16 h) conditions at 20°C day and 15°C night temperatures. Subsequently, from day 0 onwards, plants were exposed
to shortday (10 h) conditions and grown in a multi-compartment system that allowed stolon initiation, stolon branching, stolon
growth and tuber initiation to be monitored twice weekly. These frequent measurements resulted in detailed life-histories
of all 841 stolon tips formed until day 46. Tuber initiation was irregular under these well-defined conditions; at day 46
only 106 stolon tips showed subapical swelling. This irregularity of tuber initiation was also observed within stolons. It
is therefore suggested that tuber initiation depends on characteristics of the stolon or stolon branch, and several such characteristics
were analyzed to obtain information on their potentially determining role in tuber initiation. No positive correlations were
found between subapical swelling and branching order, stolon and stolon-branch age, longitudinal growth rates of stolons and
stolon branches, and attachment of the stolon to the main stem. |
| |
| Keywords: | daylength stolonization tuber induction |
| 本文献已被 SpringerLink 等数据库收录！ |
|
