Results 81 to 90 of about 697 (154)
120 RESPIRATORY CHANGES IN APPLE VEGETATIVE BUDS AND INTERNODES DURING BUDBREAK [PDF]
One-year-old potted `Jonagold' apple trees on M. 9 EMLA rootstock were chilled in a cold room at 5C for 1320, 3288 or 4464 hours. They were then placed in a 22C greenhouse for forcing. Rate of dark respiration of buds and internodes was measured in vivo using the LICOR LI 6200 portable photosynthesis system.
Tania K. Dautlick, Eric Young
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Leaf color has been rarely evaluated as an important trait influencing herbivory levels in tropical plant species. Cannonball trees (Lecythis pisonis) present pink young leaves that are smaller, softer and with less chlorophyll that progressively turn into green as the season progresses. When all three leaf colors are present in the plants, there is no
Susan Vieira Gomes, Tatiana Cornelissen
wiley +1 more source
Silver Thiosulfate Application Influences Rooting and Budbreak of `Royalty' Rose Cuttings [PDF]
The effects of silver thiosulfate (STS) on stored and freshly made cuttings of `Royalty' rose (Rosa hybrids) were examined in relation to rooting and subsequent budbreak. STS pretreatment at 0.5 mm during storage stimulated budbreak but decreased the percentage of cuttings that rooted and the number of roots. IBA at 4.9 to 9.8 mm inhibited budbreak but
Wen-Quan Sun, Nina L. Bassuk
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Background. Walnut (Juglans regia L.) is the most widespread species within the genus Juglans. Late spring frosts can significantly reduce its yield.
I. I. Suprun +4 more
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Vegetative phenological stages were evaluated in a spruce monoculture of the third age class in the region of the Drahanská vrchovina Upland. Methods of the ČHMÚ (Czech Hydro-Meteorological Office) were used. Temperature requirements of Norway spruce for
Emilie Bednářová, Lucie Merklová
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Heat requeriment for inducing budbreaking in different apple cultivars
The heat requirements for bud burst of six apple cultivars were evaluated. Shoots with 20 to 25cmlength were submitted to 1,150 cold units. After this treatment, shoots were divided in single bud cuttings and treated at different temperatures (5, 10, 15, 20 and 25oC).
Putti, Gilberto Luiz +3 more
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Performance of ‘Maxi Gala’ apple trees as affected by budbreak promoters, in São Joaquim-SC
The application of rest breaking agents to compensate the lack of chilling is a common practice in apple orchards in Southern Brazil. However, its necessity in areas of greater chilling accumulation has been questioned over the years.
Mateus da Silveira Pasa +5 more
doaj +1 more source
A baixa necessidade de frio é característica fundamental para que se possa cultivar economicamente o pessegueiro em condições de clima subtropical, devendo ser este, portanto, o principal objetivo dos programas de melhoramento nestas regiões.
Américo Wagner Júnior +5 more
doaj +1 more source
The search for low chill cultivars for peach production in areas with low chill accumulation (temperatures below 7.2°C) has stimulated studies about the higher temperatures effects on low chill cultivars.
Geraldo Chavarria +5 more
doaj +1 more source
Apesar da alta eficiência de algumas substâncias químicas na indução da brotação de frutíferas de clima temperado, a elevada toxicidade apresentada por esses compostos é um dos principais problemas relacionados ao seu uso. Resultados preliminares indicam
Fernando José Hawerroth +3 more
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