Document Type : Full Paper
Authors
1
Ph.D. Candidate, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
2
Professor, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
3
Associate Professor, Temperate Fruit Research Center, Horticultural Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
4
Assistant Professor, Soil and Water Research, Agricultural Research, Education and Extention Organization, Karaj, Iran
5
Assistant Professor, National Salinity Research Center, Agricultural Research, Education and Extension Organization (AREEO), Yazd, Iran
Abstract
In order to study the effect of salinity stress on morphological characteristics, absorption and transport of some nutrients of almond, a factorial experiment based on a completely randomized design with two factors including rootstock and rootstock and scion combination in four levels(vegetative rootstocks: GF677, GN15, and tetra and seedling rootstock of bitter almond as control and Shahrood-12 on four mentioned rootstocks) and salinity of irrigation water in five levels (0.3(control), 2, 4, 6 and 8 dS/m) were used. The results showed that increasing salinity up to 8 dS/m reduced the leaf nitrogen content of Shahroud-12 cultivar in grafted form and non-grafted rootstocks. With increasing salinity up to 8 dS/m, the highest and lowest reduction in leaf phosphorus content were observed on the control (non-grafted) GF677 and Shahroud-12 cultivars on GF667, respectively. Increasing salinity resulted in increased potassium content of Shahroud-12 on GF677 and non-grafted GF677 rootstock. The results also showed that with increasing salinity, the ratio of sodium/nitrogen in the root of the control rootstocks increased. In salinity of 8 dS/m the highest and lowest sodium/potassium ratio was observed in the seedling rootstock of bitter almond and Shahroud-12 on GF677 rootstock. The results showed that Shahroud-12 grafted onto GF677 was the most tolerance compound to salinity.
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