EFFECT OF WATER DEFICIT STRESS ON PEACH GROWTH UNDER COMMERCIAL ORCHARD MANAGEMENT CONDITIONS

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RAHMATI M.; DAVARYNEJAD GH.; BANNAYAN AWAL M.; AZIZI M.

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Journal: Journal of Water and Soil Year:2014 | Volume:28 | Issue:5 Page(s): 940-950

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Title

EFFECT OF WATER DEFICIT STRESS ON PEACH GROWTH UNDER COMMERCIAL ORCHARD MANAGEMENT CONDITIONS

Author(s)

RAHMATI M. | DAVARYNEJAD GH. | BANNAYAN AWAL M. | AZIZI M. | Issue Writer Certificate

Keywords

DROUGHTQ3

PHOTOSYNTHESISQ2

STOMATAL CONDUCTANCEQ2

TRANSPIRATIONQ3

WATER POTENTIALQ2

Abstract

In order to study the sensitivity of vegetative growth to water deficit stress of a late-maturing peach (Prunus persica L. cv. Elberta) under orchard conditions, an experiment was conducted as randomized complete-blockde sign with three treatments and four repetitions in Shahdiran commercial orchard in Mashhad during 2011. Three irrigation treatments including 360 (low stress), 180 (moderate stress) and 90 (severe stress) m3ha-1 week-1 using a drip irrigation system (minimum stem WATER POTENTIAL near harvest: -1.2, -1.5 and -1.7 MPa, respectively) from the mid-pit hardening stage (12th of June) until harvest (23rd of Sep.) applied. Predawn, stem and leaf WATER POTENTIALs, leaf PHOTOSYNTHESIS, TRANSPIRATION, STOMATAL CONDUCTANCE and leaf temperature, the number of new shoots on fruit bearing shoots and vegetative shoots lengths during growing season as well as leaf area at harvest were measured. The results showed that water deficit stress had negative effects on peach tree water status, thereby resulting in decreased leaf gas exchange and tree vegetative growth. As significant decreased assimil ateproduction of tree was resulted from both decreased leaf assimilation rate (until about 23 % and 50 %, respectively under moderate and severe stress conditions compared to low stress conditions) and decreased leafarea of tree (until about 57% and 79%, respectively under moderate and severe stress conditions compared to low stress conditions at harvest). The significant positive correlation between leaf WATER POTENTIAL and veget ativegrowth of peach revealed that shoot growth would decrease by 30% and 50% of maximum at leaf WATER POTENTIALof –1.56 and –2.30 MPa, respectively.

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APA: Copy

RAHMATI, M., DAVARYNEJAD, GH., BANNAYAN AWAL, M., & AZIZI, M.. (2014). EFFECT OF WATER DEFICIT STRESS ON PEACH GROWTH UNDER COMMERCIAL ORCHARD MANAGEMENT CONDITIONS. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), 28(5), 940-950. SID. https://sid.ir/paper/141130/en

Vancouver: Copy

RAHMATI M., DAVARYNEJAD GH., BANNAYAN AWAL M., AZIZI M.. EFFECT OF WATER DEFICIT STRESS ON PEACH GROWTH UNDER COMMERCIAL ORCHARD MANAGEMENT CONDITIONS. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)[Internet]. 2014;28(5):940-950. Available from: https://sid.ir/paper/141130/en

IEEE: Copy

M. RAHMATI, GH. DAVARYNEJAD, M. BANNAYAN AWAL, and M. AZIZI, “EFFECT OF WATER DEFICIT STRESS ON PEACH GROWTH UNDER COMMERCIAL ORCHARD MANAGEMENT CONDITIONS,” JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), vol. 28, no. 5, pp. 940–950, 2014, [Online]. Available: https://sid.ir/paper/141130/en

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