In the last decades it has been observed in the Mediterranean areas that rainfall is becoming irregular and concentrated in short time leading to flooding and water stagnation in poorly drained soils. Among the aims of genetic improvement of stone-fruit trees, attention is focused on the increase in root tolerance of waterlogging. Two somaclonal lines were generated in vitro from leaf explants of rootstock Mr.S.2/5 of Prunus cerasifera L. Under in vivo conditions line S4 resulted tolerant to prolonged soil waterlogging, while line S1 (minus variant) showed a lower capacity to survival at waterlogging, similar to wild type The three lines exhibited different epinasty, gas exchange and assimilation and sugars content. Further investigations demonstrated that the rootstock lines are differently affected in the flooding tolerance among the variability of photoperiodism, with different alteration of some physiological parameters
Flooding Tolerance and photoperiodic response in different Prunus Spp Rootstock Mutants
PISTELLI, LAURA;IACONA, CALOGERO;
2010-01-01
Abstract
In the last decades it has been observed in the Mediterranean areas that rainfall is becoming irregular and concentrated in short time leading to flooding and water stagnation in poorly drained soils. Among the aims of genetic improvement of stone-fruit trees, attention is focused on the increase in root tolerance of waterlogging. Two somaclonal lines were generated in vitro from leaf explants of rootstock Mr.S.2/5 of Prunus cerasifera L. Under in vivo conditions line S4 resulted tolerant to prolonged soil waterlogging, while line S1 (minus variant) showed a lower capacity to survival at waterlogging, similar to wild type The three lines exhibited different epinasty, gas exchange and assimilation and sugars content. Further investigations demonstrated that the rootstock lines are differently affected in the flooding tolerance among the variability of photoperiodism, with different alteration of some physiological parametersI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
