New Zealand Journal of Crop and Horticultural Science abstracts
Response to severe water stress of the almond (Prunus amygdalus)
‘Ferragnès’ grafted on eight rootstocks
A. Isaakidis
T. Sotiropoulos
Pomology Institute (NAGREF)
P.O. Box 122
59200 Naoussa
Macedonia, Greece
email: thosotir@alfanet.gr
D. Almaliotis
Soil Science Institute (NAGREF)
57001 Thermi-Thessaloniki, Greece
I. Therios
Department of Horticulture
Laboratory of Pomology
Aristotle University
54124 Thessaloniki, Greece
D. Stylianidis
Egnatia 5
59100 Veria, Greece
Abstract The behaviour of almond (Prunus amygdalus)
‘Ferragnès’ grafted on eight rootstocks (GF-677, Stylianidis C., GN-15,
GN-22, M-51, 3-7, 3-8, and Drepanoto), as regards certain agronomical and
physiological responses, was studied under water stress conditions. From
the results it is concluded that scions on GN-22 were better adapted to water
stress conditions as they had higher growth, higher pre-dawn leaf water potential,
and lower leaf shedding. However for some parameters measured, GN-22 was
not significantly different to GN-15, GF 677, and Drepanoto. A suitable rootstock
adapted to water stress may also have the characteristic for high nutrient
uptake. Regarding nutrient status, under the specific experimental conditions
of water stress and low fertiliser input, scions on Drepanoto maintained
most nutrients in leaves in the adequate range (except nitrogen, potassium,
and boron) followed by GF 677, 3-8, and M-51. Furthermore, scions on Drepanoto
showed a tendency for higher uptake of manganese (Mn) and zinc (Zn) and therefore
this rootstock is appropriate for soils with low Mn and Zn availability.
Keywords chlorophyll; drought tolerance; leaf water
potential; photosynthetic rate; water use efficiency
H03114; Online publication date 11 November 2004 Received 17 December
2003; accepted 2 August 2004
New Zealand Journal of Crop and Horticultural Science, 2004, Vol. 32:
355-362
0014-0671/04/3204-0355 $7.00 © The Royal Society of New Zealand
2004
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