The influence of autumn temperature on flowering time and cropping of<i>Pyrus communis</i>cv. Conference

Atkinson, Carol; Taylor, L.

doi:10.1080/00221589.1994.11516546

Cited by 19 publications

(7 citation statements)

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“…The year-to-year variation and differences among cultivars seem to indicate that there is a strong influence of climatic conditions and genotype on sweet cherry fruit set, as has been found in other studies (Choi and Andersen, 2001) and in different fruit species such as pear (Atkinson and Taylor, 1994;Atkinson and Lucas, 1996) or apricot (Alburquerque et al, 2004;Ruiz and Egea, 2008).…”

Section: Total Number Of Flowers Per Node and Fruit Setmentioning

confidence: 61%

Factors influencing fruit set and quality in different sweet cherry cultivars

Montiel

Serrano²,

Martı́nez-Romero

et al. 2010

Span. j. agric. res.

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The aim of this work is the characterisation of seven cultivars of sweet cherry grown at Murcia (Spain) by determining flower bud density, flower buds drop, number of developing flower buds and total number of flowers per node, fruit set and percentage of double fruits from 2004 to 2007. Also some attributes related to fruit quality, such as fruit weight, colour, soluble solids, total acidity and firmness were evaluated at different ripening stages. 'Brooks' shows high production of flower buds and an appropriate total number of flowers per node in different years, besides high levels of total soluble solids (TSS), ripening index and fruit firmness. 'Burlat' and 'Somerset' ranged medium values of most of the analyzed floral biology and fruit quality parameters. 'Cristobalina' had high fruit set percentages in all years of study (34-42 %), but the fruit size (7.26 ± 0.30 g) and the fruit firmness values were low (1 N mm -1 ). The maturation period of 'Marvin' fruits was very short and at the commercial ripening stage these fruits showed the darkest red colour. In 'Ruby' the fruit set was very erratic and the percentage of double fruits was high. This cultivar presented a good ripening index and fruit firmness levels. 'New Star' is characterized by consistent high fruit set percentages (35-65%), absence of double fruits as well as by good fruit size (12.7 ± 0.54 g), colour and firmness levels (≈2 N mm -1 ). Additional key words: breeding; flower buds; fruit quality; fruit set. Resumen Factores que afectan al cuajado y la calidad del fruto en distintas variedades de cerezoEn este trabajo se ha realizado la caracterización pomológica de siete variedades de cerezo, cultivadas en la Región de Murcia. Se han determinado características florales como densidad de yemas de flor, número de yemas de flor y número total de flores por ramillete, caída de yemas, porcentaje de cuajado de frutos y de frutos dobles desde 2004 hasta 2007. También se determinaron algunos atributos relacionados con la calidad de las cerezas, como peso, color, sólidos solubles, acidez total y firmeza. La variedad 'Brooks' además de mostrar una elevada producción de yemas florales y un número adecuado de flores por ramillete, registró altos niveles de sólidos solubles totales, índice de madurez y firmeza. 'Burlat' y 'Somerset' alcanzaron valores medios en la mayoría de los parámetros de biología floral y calidad de fruto analizados. En 'Cristobalina' el porcentaje de cuajado de frutos fue elevado en todos los años de estudio (34-42%), aunque el tamaño de la cereza (7,26 ± 0,30 g) y sus valores de firmeza (1 N mm -1 ) fueron muy bajos. 'Marvin' presentó un porcentaje de frutos dobles bajo, un período de maduración bastante corto y fue la variedad que presentó el color rojo más oscuro. En 'Ruby' el cuajado de frutos fue muy errático y la presencia de frutos dobles importante. Esta variedad registró un buen índice de madurez, así como buena firmeza. 'New Star' destacó por los elevados porcentajes de cuajado (35-65%) y ausencia de frutos dobles, a...

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Section: Total Number Of Flowers Per Node and Fruit Setmentioning

confidence: 61%

Factors influencing fruit set and quality in different sweet cherry cultivars

Montiel

Serrano²,

Martı́nez-Romero

et al. 2010

Span. j. agric. res.

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“…PLANT MATERIAL. Six 18-year-old 'Agua de Aranjuez,ʼ pear trees grafted on 'EMʼ quince rootstock and grown under standard Apples and pears are fruit crops particularly susceptible to cropping irregularity (Atkinson and Taylor, 1994;Beattie and Folley, 1977;Browning and Miller, 1992;Jackson and Hamer, 1980). Analyzing fruit set determinants in apple, Williams (1970) could demonstrate a strong relationship between the effectiveness of fl owers to set fruit following delayed pollinations and general orchard performance suggesting that cropping variability among different sites could therefore be explained in terms of differences in fl ower receptivity.…”

Section: Methodsmentioning

confidence: 99%

Stigmatic Receptivity Limits the Effective Pollination Period in `Agua de Aranjuez' Pear

Sanzol¹,

Rallo²,

Herrero³

2003

jashs

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Apples and pears are fruit crops particularly susceptible to cropping irregularities. A strong relationship has been observed between the effective pollination period (EPP) and the general cropping of the orchard. The EPP concept has also been proven to be a useful parameter to establish a relationship between the variation in the reproductive process and cropping behaviors. For apples and pears, a slow pollen tube growth has been shown to be the main limiting factor of the EPP in the traditional cooler temperate cultivation regions. However, while higher temperatures speed up the pollen tube growth, the expansion of these crops into warmer areas often results in failures of fruit set. Thus, with the aim to ascertain the main limiting factor responsible for fruit set failures in Mediterranean conditions we have evaluated the EPP for two consecutive years in `Agua de Aranjuez' pear, the main Spanish cultivar, by studying the stigmatic receptivity, pollen tube kinetics, and ovule development. Complete flower fertility was maintained for just 2 days after anthesis in both years. Pollen tube kinetics and ovule degeneration do not appear to limit flower receptivity. However, the stigmatic receptivity expressed as flowers with at least one receptive stigma, closely matches the duration of the EPP evaluated from fruit set experiments. This was consistent over the 2 years of experiments, in spite of the differences recorded in the EPP, suggesting that stigmatic receptivity is clearly the limiting factor of flower receptivity. This is the first report for stigmatic receptivity limiting the EPP in pears and suggests that stigmatic receptivity could be an important factor limiting pear flower receptivity and hence cropping performance under warmer conditions.

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“…The same 391 relative change was observed between Bergerac and Nîmes (Table 5) For pear tree cultivars, we may suppose that abrupt change of flowering dates is 443 explainable in the same way as for apple tree 'Golden Delicious'. However, higher mean 444 advances in flowering dates for pear tree cultivars in same locations and periods suggest that 445 climate warming exerted a lower effect on the lengthening of dormancy in the case of pear 446 trees, due to their lower chilling requirements (Atkinson and Taylor, 1994). …”

Section: Statistical Models 123mentioning

confidence: 99%