Results 31 to 40 of about 49,100 (228)

Growing apple (Malus domestica) under tropical mountain climate conditions in Northern Ethiopia [PDF]

open access: yes, 2010
Lack of effective chilling during the dormant season is one of the major problems when apples are growing under a tropical climate. We evaluated the response of different apple cultivars (Golden Delicious, Gala, Fuji, Granny Smith and Jonagold) grown on ...
ALEMTSEHAY TSEGAY   +23 more
core   +1 more source

Genetic Differences in Resistance of Scotch Pine to Eastern Pineshoot Borer [PDF]

open access: yes, 2017
(excerpt) Scotch pine (Pinus sylvestris L.) is the most common plantation Christmas tree in the northeastern United States. In its large native range, covering much of Europe and Asia, this species is valued highly for timber. Its adaptability to various
Steiner, Kim
core   +2 more sources

Nitrogen deficiency increases basal branching and modifies visual quality of the rose bushes [PDF]

open access: yes, 2011
Rosebush architecture resulting from the spatial organisation of the plant axes induces plant shape and consequently within ornamental horticulture context, its visual quality and commercial value.
A. Canet   +6 more
core   +4 more sources

Avoidance by early flushing: a new perspective on Dutch elm disease research

open access: yesiForest - Biogeosciences and Forestry, 2009
European elms (Ulmus glabra Huds., Ulmus laevis Pall. and Ulmus minor Mill.) have been severely damaged and are still endangered by an alien hypervirulent pathogen, Ophiostoma ulmi s. l., agent of the Dutch elm disease (DED).
Ghelardini L, Santini A
doaj   +1 more source

BUD DORMANCY INTENSITY IN PEACH TREE CULTIVARS BY BIOLOGICAL AND TETRAZOLIUM TEST

open access: yesRevista Brasileira de Fruticultura, 2016
Temperate climate fruit trees often exhibit uneven budding and flowering, due to the low number of chilling hours that determine the occurrence of dormancy and its depth.
GISELDA ALVES   +2 more
doaj   +1 more source

Sugars are under light control during bud burst in Rosa sp. [PDF]

open access: yesPlant, Cell & Environment, 2010
ABSTRACTBud burst in certain species is conditioned by the luminous environment. With roses, the requirement for light is absolute, and darkness totally inhibits bud burst. Few studies have looked into understanding the action of light on the physiological bud burst processes.
Girault, T.   +6 more
openaire   +4 more sources

Chemical regulation of sex expression in certain olive cultivars

open access: yesActa Agrobotanica, 2013
The modifying effect of growth regulators on bud burst, flower bud formation and sex expression in olives varies greatly according to cultivar, concentration and time of application.
E. S. Hegazi, G. R. Stino
doaj   +1 more source

Extrato de alho melhora a superação da dormência de videiras ‘Niagara Rosada’em regiões subtropicais. [PDF]

open access: yes, 2010
Nas regiões com invernos amenos, normalmente as exigências de frio para a quebra de dormência de gemas de videiras não são atendidas, e apenas os produtos altamente tóxicos CaCN2 e H2CN2 são recomendados na viticultura convencional para quebra de ...
Botelho, Renato Vasconcelos   +4 more
core   +2 more sources

Tradeoffs between chilling and forcing in satisfying dormancy requirements for Pacific Northwest tree species

open access: yesFrontiers in Plant Science, 2015
Many temperate and boreal tree species have a chilling requirement, that is, they need to experience cold temperatures during fall and winter to burst bud normally in the spring. Results from trials with 11 Pacific Northwest tree species are consistent
Constance Ann Harrington
doaj   +1 more source

Epigenetic regulation of adaptive responses of forest tree species to the environment [PDF]

open access: yes, 2013
Epigenetic variation is likely to contribute to the phenotypic plasticity and adaptative capacity of plant species, and may be especially important for long-lived organisms with complex life cycles, including forest trees.
Abarca, Dolores   +16 more
core   +4 more sources

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