SALT TOLERANCE COMPARISON OF FOUR INTERSPECIFIC PRUNUS HYBRIDS
In this experiment, four interspecific Prunus hybrid rootstocks (HS314, HS312, HS302 and GF677) were subjected to salinity levels of 1.5, 3, 6 and 9 dS m-1. The salt mixtures were used to prepare saline solutions.
Most plant responses were significant at high concentrations of salinity (6 and 9 dS m-1) whereas there were no deleterious effects on plant growth in the 1.5 and 3 dS m-1 salinity level treatments.
The reduction in growth varied with genotype so that the highest and lowest reductions were observed in genotypes HS302 and GF677, respectively.
The variation of leaf proline was significant in all levels of salinity and HS302 demonstrated the highest amount of proline accumulation in higher salt treatments.
Chlorophyll content and chlorophyll index were both reduced as salinity increased, with the highest reductions in genotypes HS302 and HS314. Salinity led to significant differences among genotypes relative to K+, Mg2+, Ca2+, Na+, Cl- concentrations of leaves and roots.
Genotypes HS312 and HS302 had lower, whereas GF677 and HS314 had higher concentrations of Na and Cl- in leaves by increasing salinity however, HS314 had a good potential for osmotic adjustment and maintained a high growth rate in salinity stress.
Dejampour, J., Aliasgarzadb, N., Grigorianc, V. and Majidid, E. (2012). SALT TOLERANCE COMPARISON OF FOUR INTERSPECIFIC PRUNUS HYBRIDS. Acta Hortic. 966, 81-86
DOI: 10.17660/ActaHortic.2012.966.12
https://doi.org/10.17660/ActaHortic.2012.966.12
DOI: 10.17660/ActaHortic.2012.966.12
https://doi.org/10.17660/ActaHortic.2012.966.12
saline, proline, chlorophyll, ion, concentration
English
966_12
81-86