Climatic characterization and phenology of local peach genotypes in the Udzungwa uplands of Tanzania

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Abstract

The phenology of two local peach genotypes was studied to verify whether peaches can be produced in the Tanzanian uplands. Observations were conducted on trees of one early- and one late-ripening peach genotype in 2010 and 2011. Temperature trends were reconstructed and three chilling estimation models were tested. The two peach genotypes differed for timing of flower and leaf bud-break. Common symptoms of insufficient chilling (presence of numerous stages at a specific date and about 20% of undeveloped flower buds) were observed in the late genotype. Both Utah and Dynamic models indicated low chilling accumulation, lower than the Mean Temperature model in most cases. This is inconsistent with the actual phenology, suggesting that 1) both models show some limitations under our conditions, 2) the two genotypes partly adapted to the local climate, 3) mechanisms other than chilling (seasonal rainfall fluctuations) play a role in rest control.
Lingua originaleEnglish
pagine (da-a)388-404
Numero di pagine17
RivistaInternational Journal of Fruit Science
Volume14
Stato di pubblicazionePublished - 2014

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Tanzania
phenology
peaches
highlands
genotype
buds
bud
flower
budbreak
ripening
dynamic models
signs and symptoms (plants)
temperature
climate
rain
rainfall
cold treatment

All Science Journal Classification (ASJC) codes

  • Ecology
  • Horticulture
  • Plant Science
  • Agronomy and Crop Science

Cita questo

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title = "Climatic characterization and phenology of local peach genotypes in the Udzungwa uplands of Tanzania",
abstract = "The phenology of two local peach genotypes was studied to verify whether peaches can be produced in the Tanzanian uplands. Observations were conducted on trees of one early- and one late-ripening peach genotype in 2010 and 2011. Temperature trends were reconstructed and three chilling estimation models were tested. The two peach genotypes differed for timing of flower and leaf bud-break. Common symptoms of insufficient chilling (presence of numerous stages at a specific date and about 20{\%} of undeveloped flower buds) were observed in the late genotype. Both Utah and Dynamic models indicated low chilling accumulation, lower than the Mean Temperature model in most cases. This is inconsistent with the actual phenology, suggesting that 1) both models show some limitations under our conditions, 2) the two genotypes partly adapted to the local climate, 3) mechanisms other than chilling (seasonal rainfall fluctuations) play a role in rest control.",
author = "{Lo Bianco}, Riccardo and Antonio Motisi and Fulvio Pernice and Alessio Scalisi and Pernice",
year = "2014",
language = "English",
volume = "14",
pages = "388--404",
journal = "International Journal of Fruit Science",
issn = "1553-8362",
publisher = "Taylor and Francis Ltd.",

}

TY - JOUR

T1 - Climatic characterization and phenology of local peach genotypes in the Udzungwa uplands of Tanzania

AU - Lo Bianco, Riccardo

AU - Motisi, Antonio

AU - Pernice, Fulvio

AU - Scalisi, Alessio

AU - Pernice, null

PY - 2014

Y1 - 2014

N2 - The phenology of two local peach genotypes was studied to verify whether peaches can be produced in the Tanzanian uplands. Observations were conducted on trees of one early- and one late-ripening peach genotype in 2010 and 2011. Temperature trends were reconstructed and three chilling estimation models were tested. The two peach genotypes differed for timing of flower and leaf bud-break. Common symptoms of insufficient chilling (presence of numerous stages at a specific date and about 20% of undeveloped flower buds) were observed in the late genotype. Both Utah and Dynamic models indicated low chilling accumulation, lower than the Mean Temperature model in most cases. This is inconsistent with the actual phenology, suggesting that 1) both models show some limitations under our conditions, 2) the two genotypes partly adapted to the local climate, 3) mechanisms other than chilling (seasonal rainfall fluctuations) play a role in rest control.

AB - The phenology of two local peach genotypes was studied to verify whether peaches can be produced in the Tanzanian uplands. Observations were conducted on trees of one early- and one late-ripening peach genotype in 2010 and 2011. Temperature trends were reconstructed and three chilling estimation models were tested. The two peach genotypes differed for timing of flower and leaf bud-break. Common symptoms of insufficient chilling (presence of numerous stages at a specific date and about 20% of undeveloped flower buds) were observed in the late genotype. Both Utah and Dynamic models indicated low chilling accumulation, lower than the Mean Temperature model in most cases. This is inconsistent with the actual phenology, suggesting that 1) both models show some limitations under our conditions, 2) the two genotypes partly adapted to the local climate, 3) mechanisms other than chilling (seasonal rainfall fluctuations) play a role in rest control.

UR - http://hdl.handle.net/10447/98411

M3 - Article

VL - 14

SP - 388

EP - 404

JO - International Journal of Fruit Science

JF - International Journal of Fruit Science

SN - 1553-8362

ER -