RESPONSE OF THE APPLE ROOTSTOCKS 'M 9', 'M 26' AND 'MM 106' TO BORON TOXICITY
Plants of the apple rootstocks M 9, M 26 and MM 106 were grown in a 1:1 sand:perlite mixture and irrigated with Hoaglands nutrient solutions containing three boron (B) concentrations (0.025, 0.2 and 0.4 mM). M 26 plants were able to maintain lower B concentrations in their leaves in comparison to M 9 and MM 106. Chlorophyll content and photosynthetic rate of leaves from plants treated with 0.4 mM B were significantly lower in comparison to the control.
Phosphorous and Zn concentrations of leaves were not significantly affected by rootstock and B concentra-tion of the nutrient solution.
Potassium, Mg, Fe and Mn concentrations of leaves were not significantly affected by B concentration of the nutrient solution.
Potassium concentration of leaves of M 26 rootstock was significantly lower, whereas Mg and Mn concentrations were significantly higher in comparison to M 9 and MM 106, for all B concentrations used.
By increasing B concentration in solution, Ca concentra¬tion of leaves of M 9 and M 26 rootstocks decreased, whereas that of MM 106 was not altered significantly.
Koutinas, N., Roubos, K., Sotiropoulos, T. and Therios, I. (2013). RESPONSE OF THE APPLE ROOTSTOCKS 'M 9', 'M 26' AND 'MM 106' TO BORON TOXICITY. Acta Hortic. 981, 471-474
DOI: 10.17660/ActaHortic.2013.981.75
https://doi.org/10.17660/ActaHortic.2013.981.75
DOI: 10.17660/ActaHortic.2013.981.75
https://doi.org/10.17660/ActaHortic.2013.981.75
chlorophyll, Malus domestica, photosynthetic rate, nutritional status
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