Results 251 to 260 of about 4,765 (275)

Chilling requirements of Paeonia cultivars

Scientia Horticulturae, 2001
Abstract Dormant second year potted plants of Paeonia ‘Coral Sunset’, ‘Monsieur Jules Elie’, and ‘Sarah Bernhardt’ were placed into three chilling regimes (constant 1, 4, or 7°C) for different durations (3, 6, 9, or 12 weeks) to ascertain their chilling requirements for shoot and flower production. Chilling was followed by forcing for up to 5 weeks
T.A. Fulton, A.J. Hall, J.L. Catley
openaire   +1 more source

CHILLING REQUIREMENT EVALUATION OF PEACH HYBRIDS OBTAINED AMONG CULTIVARS WITH HIGH AND LOW CHILLING REQUIREMENTS

Acta Horticulturae, 2010
The introduction of high chilling requirement genotypes can be useful to widen the genetic base of the low chilling requirement germplasm, mainly considering fruit quality. However, the hybrids among high and low chilling requirement genotypes can have poor adaptation in mild areas, with erratic budbreak and flowering.
C.H. Bruckner, A. Wagner Júnior, L.D. Pimentel, J.O.C. Silva, C.E.M. dos Santos, M.A.D.O. Morgado   +5 more
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Climate Change and Chilling Requirements

2015
Climate change has affected the rates of chilling and heat accumulation, which are vital for flowering and production, in temperate fruit trees (Guo et al. 2014). All economically important fruit and nut tree species that originated from temperate and cool subtropical regions have chilling requirements that need to be fulfilled each winter to ensure ...
Fernando Ramírez, Jose Kallarackal
openaire   +1 more source

METHOD TO DETERMINE CHILLING REQUIREMENT IN BLUEBERRIES

Acta Horticulturae, 2006
A chilling study was initiated in January 1998 on 'Tifblue' rabbiteye (Vaccinium ashei Reade) and blueberry plants that had received > 500 chilling hours (
J.M. Spiers, D.A. Marshall, B.J. Smith, J.H. Braswell   +3 more
openaire   +1 more source

CHILLING AND HEAT REQUIREMENT IN APRICOT AND PEACH VARIETIES

Acta Horticulturae, 2004
The aim of this research was to characterise the phenological behaviour of five peach and five apricot cultivars and to quantify their chilling and heat requirements by evaluating and comparing the applicability of different temperature models in Northwest Italy.
VALENTINI, Nadia, ME, Giovanni, Lovisetto M., Spanna F.   +3 more
openaire   +2 more sources

The Chilling Requirement of Western Hemlock Seedlings

Forest Science, 1979
Abstract Many tree species in temperate zones require a period of low temperatures to overcome dormancy. When seedlings of western hemlock were preconditioned with 6 wks of mild, short days, their chilling requirement was met by 4 wks of a constant 5°C temperature, considerably less chilling than required by Douglas-fir.
Eric A. Nelson, Denis P. Lavender
openaire   +1 more source

REDUCED CHILLING REQUIREMENT OF McFARLIN CRANBERRY BUDS

Canadian Journal of Plant Science, 1969
not available
F. Eady, G. W. Eaton
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Predicting chill accumulation requirements using different models

2002
Chill accumulation models are used to estimate the days from the end of a season until bud break in the following season. Trees have specific chill requirements that are related to the number of accumulated hours within a known temperature range. A new chill accumulation model was developed to improve the estimation of bud break date. In this model, we
Cesaraccio C, Spano D, Snyder RL, Duce P
openaire   +3 more sources

Chilling requirements of the apple cultivar Stoke Red

Australian Journal of Experimental Agriculture and Animal Husbandry, 1974
Trees of the apple cultivar Stoke Red were chilled at temperatures between 2°C and 10°C for periods up to 3000 hours. Extension growth and budbreak increased with increasing hours of chilling and decreasing temperatures. The cultivar was shown to require more chilling than is provided by southern Victorian winters.
WK Thompson, DG Nichols, DL Jones
openaire   +1 more source

Chilling requirement of commercialEchinaceaseed

New Zealand Journal of Crop and Horticultural Science, 1996
Abstract This study aimed to determine the effect of the moist chilling of seed on germination of Echinacea angustifolia DC. and Echinacea purpurea (L.) Moench, and the effect of seed coat trimming on the germination of E. angustifolia. Seed of E. angustifolia stratified for more than 2 weeks achieved maximum germination rates of 65–80%.
G. A. Parmenter, L. C. Burton, R. P. Littlejohn   +2 more
openaire   +1 more source