Developmental events in differentiating floral buds of four olive (Olea europaea L.) cultivars during late winter to early spring

Kitsaki, C. K.; Andreadis, Evagelos; Bouranis, D. L.

doi:10.1016/j.flora.2009.07.001

Cited by 15 publications

(12 citation statements)

References 32 publications

(43 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, a minimum of vegetative development is needed to reach the adult phase and the ability to develop flowers [2], [3]. The transition from a vegetative meristem to a reproductive one is usually divided into two phases: i) the induction phase, that involves biochemical modifications leading the apical bud to the formation of a reproductive structure, and ii) the differentiation phase during which the tissues of flower organs are formed [4]. Flower initiation is usually limited by concomitant heavy cropping which can lead to alternate bearing [5].…”

Section: Introductionmentioning

confidence: 99%

QTL Mapping of Flowering and Fruiting Traits in Olive

et al. 2013

View full text Add to dashboard Cite

One of the challenge fruit growers are facing is to balance between tree production and vegetative growth from year to year. To investigate the existence of genetic determinism for reproductive behaviour in olive tree, we studied an olive segregating population derived from a cross between ‘Olivière’ and ‘Arbequina’ cultivars. Our strategy was based on (i) an annual assessment of individual trees yield, and (ii) a decomposition of adult growth units at the crown periphery into quantitative variables related to both flowering and fruiting process in relation to their growth and branching. Genetic models, including the year, genotype effects and their interactions, were built with variance function and correlation structure of residuals when necessary. Among the progeny, trees were either ‘ON’ or ‘OFF’ for a given year and patterns of regular vs. irregular bearing were revealed. Genotype effect was significant on yield but not for flowering traits at growth unit (GU) scale, whereas the interaction between genotype and year was significant for both traits. A strong genetic effect was found for all fruiting traits without interaction with the year. Based on the new constructed genetic map, QTLs with small effects were detected, revealing multigenic control of the studied traits. Many were associated to alleles from ‘Arbequina’. Genetic correlations were found between Yield and Fruit set at GU scale suggesting a common genetic control, even though QTL co-localisations were in spe`cific years only. Most QTL were associated to flowering traits in specific years, even though reproductive traits at GU scale did not capture the bearing status of the trees in a given year. Results were also interpreted with respect to ontogenetic changes of growth and branching, and an alternative sampling strategy was proposed for capturing tree fruiting behaviour. Regular bearing progenies were identified and could constitute innovative material for selection programs.

show abstract

Section: Introductionmentioning

confidence: 99%

QTL Mapping of Flowering and Fruiting Traits in Olive

et al. 2013

View full text Add to dashboard Cite

show abstract

“…A espécie Olea europaea L., conhecida popularmente como oliveira, é uma árvore frutífera subtropical de grande importância devido à utilização do azeite e da azeitona na dieta humana (Kitsaki et al, 2010), sendo estes produtos ricos em antioxidantes, além de possuir propriedades que diminuem os riscos de doenças cardiovasculares (Goulas et al, 2009).…”

Section: Introductionunclassified

“…Existem duas categorias de modelos de simulação: linear ou aditiva e não linear ou multiplicativa. Na categoria linear o modelo do Filocrono é o exemplo mais recorrente, enquanto o modelo de Wang e Engel (WE) é bastante utilizado na categoria não linear (Wang e Engel, 1998;Xue et al, 2004;Evers, et al, 2007;Streck et al, 2008a;Streck et al, 2009;Lisboa et al, 2012). O modelo do Filocrono propõe uma relação linear e aditiva entre a TAF e a função de temperatura do ar, a qual é expressa por meio da soma térmica, cuja unidade é ºC dia (Streck et al, 2005;Xue et al, 2004;Evers, et al, 2007;Rosa et al, 2009).…”

Section: Introductionunclassified

Desenvolvimento foliar em duas cultivares de oliveira estimado por duas categorias de modelos

Martins

Pereira

Pinheiro

et al. 2014

Rev. bras. meteorol.

View full text Add to dashboard Cite

Os modelos de simulação são ferramentas utilizadas na área de agrometeorologia para quantificar o desenvolvimento de culturas agrícolas e florestais. O trabalho teve como objetivo comparar os modelos do Filocrono (linear) e de Wang e Engel (não linear) para estimar o desenvolvimento foliar, através do aparecimento de folhas, nas cultivares de oliveira 'Arbequina' e 'MGS ASC315' durante a fase de muda. O experimento foi instalado no campo experimental da Empresa Agropecuária de Minas Gerais (EPAMIG), Maria da Fé (MG), sob o delineamento inteiramente casualizado e organizado em arranjo fatorial, sendo duas cultivares e nove épocas de transplantio com 15 repetições em cada tratamento. Os coeficientes dos modelos foram estimados pelos dados obtidos nas três primeiras épocas de transplantio e as demais épocas foram utilizadas para avaliar o desempenho dos modelos. As respostas dos modelos foram divergentes para os dois modelos. O modelo de Wang e Engel foi mais eficiente para a cultivar 'Arbequina', com raiz do quadrado médio do erro (RQME) de 3,41 folhas, enquanto a cultivar 'MGS ASC315' teve a RQME de 6,58 folhas. O modelo do Filocrono se mostrou mais eficiente para a cultivar 'MG ASC315' com RQME de 2,98 folhas, inferior ao da cultivar 'Arbequina', com RQME de 7,49 folhas.

show abstract

“…The process can be divided into the 'induction phase', involves biochemical modifications which commit the bud to the formation of a reproductive structure, and the 'differentiation phase' during which the tissues of flower organs are formed. The onset of bud development during early and late adaptation to short days, about 2 and 3 weeks, resp., but also during ontogenetic development (t 1 *) is linked with variations in almost all metabolic pathways [47,48]. Meristem identity genes and floral organ identity genes must be activated for the floral meristem and floral organ growth and development.…”

Section: Physiological Interpretation Of the Resultsmentioning

confidence: 99%