Fruit drop: The role of inner agents and environmental factors in the drop of flowers and fruits

Racskó, J.; Leite, Gabriel Berenhauser; Petri, José Luiz; Sun, Zenghui; Wang, Y.; Szabó, Z.; Soltész, M.; Nyéki, J.

doi:10.31421/ijhs/13/3/741

Cited by 32 publications

(33 citation statements)

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“…This "June" fruit drop is a common phenomenon [11] in wild blueberry as it is in apples, apricot, avocado, citrus, coffee, pears, and others [86,87]. It has been suggested that the fruit drop may be due to pollen limitation or nutrient or water stress after pollination during fruit development [88]. However, the polynomial model ( Figure 4B) suggests that increasing pollen tetrad deposition beyond the quantities that I used in my experiment may have resulted in 100% fruit set.…”

Section: Discussionmentioning

confidence: 99%

Reproductive Biology of Wild Blueberry (Vaccinium angustifolium Aiton)

Drummond

2019

Agriculture

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Wild blueberry, Vaccinium angustifolium Aiton, is a native forest understory plant that is managed as a fruit crop. Over the past 51 years, experiments have been conducted to investigate its reproduction. A model was developed that predicts bloom to begin at 100° days (base 4.4 °C) after 1 April and to end at 500° days for a period of three to four weeks. Flower stigmas are only receptive to pollen deposition for eight to 10 days, and the rate of fruit set declines rapidly after four days. Placement of pollen upon receptive stigmas suggests that fruit set occurs with as little as a single pollen tetrad. Twelve tetrads result in 50% fruit set. Several years of exploratory fruit set field experiments show viable seeds per berry, which result from pollination with compatible genotype pollen, is associated with larger berry mass (g). Decomposition of the total variance in fruit set shows that stem variation explains 65% to 79% of total variance in the fruit set. To a lesser extent, the field, year, and clone also explain the percent fruit set variation. Variation between stems may be due to variation in the number of flowers. Fruit set tends to decrease as the flower density increases, possibly due to the limitation of pollinators.

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Section: Discussionmentioning

confidence: 99%

Reproductive Biology of Wild Blueberry (Vaccinium angustifolium Aiton)

Drummond

2019

Agriculture

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“…Yet, pollinator-mediated yield is strongly conditioned by cultivar and their spatial arrangements in fields (Bell et al, 2012;Klatt et al, 2014), as well as environmental conditions and farm management practices Bos et al, 2007a,b;Groeneveld et al, 2010;Hoover et al, 2012;Lundin et al, 2013;Melathopoulos et al, 2014;Racskó et al, 2007), suggesting current estimates of D largely do not account for variation within each crop to carry fruit and seeds to harvest. This points to a more profound problem; in the IPEV calculation D is regarded as a static parameter that is unresponsive to variation within and among fields, between regions, years and, importantly, in pollinator diversity and density.…”

Section: Contingent Valuation Methods 2010mentioning

confidence: 96%

Where is the value in valuing pollination ecosystem services to agriculture?

Melathopoulos

Cutler

Tyedmers

2015

Ecological Economics

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“…J. Racskó with co-authors (2008) determined relationship between premature fruit drop and amount of developed seeds in fruit. Fruits with the lowest amount of developed seeds are shedding first (Racskó et al, 2007). According to B.…”

Section: Group II Groupmentioning

confidence: 99%

Relation Between Apple-Tree Yield Self-Regulation and Meteorological Conditions During Fruit Set

Starkus

Gelvonauskienė

Frercks

et al. 2018

Proccedings of International Scientific Conference "RURAL DEVELOPMENT 2017"

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Apple has a tendency to bear huge amount of flowers or inflorescences. Plants have ability to eliminate excess number of fruitlets. Frequently fruit trees eliminate insufficient number of fruitlets to grow good quality fruits. Most processes related to yield self-regulation varies significantly between different apples varieties. Also meteorological conditions influenced flower buds differentiation and fruit growth during blooming and other development stages. The investigations were carried out in 2015 – 2016 at the Institute of Horticulture. The main aim was to evaluate yield self-regulation peculiarity in various apple varieties in different meteorological conditions. In our experiment we made fruit self – thinning evaluation of 15 different varieties. Meteorological conditions were varying. In 2015 there was lack of rainfall, while 2016 year was rainy. After each fruit-drop period the number of developed and undeveloped seeds were counted of self-sheded and normally growing fruits. Amount of developed seeds as auxins source is one of the most important factor for yield self-regulation. Varieties of apple which are blooming abundantly and eliminate high amount of fruitlets, grows fruits until maturity with stabile amount of developed seeds and produces permanent harvest annually, independently from meteorological conditions during vegetation. Such apple varieties need higher amount of developed seeds to inhibit abscission. Apple varieties tended to bloom abundantly and eliminate small amount of fruitlets depending on meteorological conditions. Demand of auxins to carry fruits depends on meteorological conditions therefore these apple-trees develop different amount of seeds, when weather conditions changes. We may presume, that different apple varieties need different amount of phytohormones or their ratio to hold fruitlets on the apple. Therefore apple trees with smaller amount of seeds in fruits grow more fruits to its normal size.

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Fruit drop: The role of inner agents and environmental factors in the drop of flowers and fruits

Cited by 32 publications

References 0 publications

Reproductive Biology of Wild Blueberry (Vaccinium angustifolium Aiton)

Reproductive Biology of Wild Blueberry (Vaccinium angustifolium Aiton)

Where is the value in valuing pollination ecosystem services to agriculture?

Relation Between Apple-Tree Yield Self-Regulation and Meteorological Conditions During Fruit Set

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