Timing, magnitude and causes of flower and immature fruit loss in pin cherry and choke cherry

2002 ◽  
Vol 82 (1) ◽  
pp. 157-164
Author(s):  
K. J. Shiell ◽  
R. G. St-Pierre ◽  
A. M. Zatylny
Keyword(s):  
Fruit Set ◽  
Sequential Sampling ◽  
Insect Pest ◽  
Fruit Production ◽  
Insect Damage ◽  
Immature Fruit ◽  
Leaf Roller ◽  
Fruit Species ◽  
Wild Fruit ◽  
Supplemental Pollination

Pin cherry (Prunus pensylvanica L.) and choke cherry (Prunus virginiana L.) are two wild fruit species with potential for commercial production, but information about fruit production is limited. The objectives of this study were to determine, for both species, the timing and magnitude of flower and immature fruit loss, and to determine the primary causes of this loss, including the effects of pollen source and supplemental pollination. Sequential sampling of both pin cherry and choke cherry indicated that the primary period of abscission occurred during the first 3 wk following full bloom. Final fruit set ranged from 32.6 to 44.7% of flower number for pin cherry, and from 3.7 to 20.1% for choke cherry. Insect damage accounted for only 14% of the total observed flower and fruit abscissions in pin cherry and 7% in choke cherry. The major insect pest causing this loss in pin cherry was a sawfly (Hoplocampasp., Tenthredinidae) and in choke cherry, a leaf-roller (Archips argyrospila, Tortricidae). A controlled pollination experiment was used to determine the effects of pollen source and supplemental pollination on pin cherry and choke cherry. Final fruit set for flowers that were cross-pollinated by hand in both pin cherry (mean of 51.3%) and choke cherry (mean of 56.9%) in most cases was significantly greater than flowers that were open-pollinated, self-pollinated, or not pollinated. These data suggested that the majority of flower and immature fruit loss in both pin cherry and choke cherry resulted from a lack of pollination and/or fertilization. Key words: Choke cherry, pin cherry, flower loss, immature fruit loss, pollination, insect damage

scholarly journals The insect pest complex of Actinidia arguta kiwifruit

2009 ◽  
Vol 62 ◽  
pp. 262-267
Author(s):  
C.E. Mckenna ◽  
S.J. Dobson ◽  
J.M. Phare
Keyword(s):  
Fruit Set ◽  
Insect Pests ◽  
Insect Pest ◽  
Growing Season ◽  
Scale Insects ◽  
Insect Damage ◽  
Pest Species ◽  
Actinidia Arguta ◽  
Quarantine Species ◽  
Armoured Scale Insects

The key insect pests of Actinidia arguta kiwifruit were determined by monitoring tagged fruit bunches for insects and insect damage in six orchard blocks from fruit set in November 2007 until harvest in February 2008 and by examining samples of picked fruit at harvest The proportion of fruit damaged by leafroller feeding increased throughout the entire growing season and live caterpillars were present on picked fruit at harvest Greenhouse thrips damage to fruit was noticeable from mid January Armoured scale insects and mealybugs were recorded on the fruit from December but most infestations occurred during the month prior to harvest Leafrollers and greenhouse thrips are the key production pests while leafrollers greedy scale and some mealybug species are potential quarantine species All three commercial A arguta cultivars grown in the Bay of Plenty are susceptible to the key pest species

scholarly journals Indigenous fruit species as a significant resource for sustainable development

2014 ◽  
pp. 181-193 ◽  
Author(s):  
Evica Mratinic ◽  
Milica Fotiric-Aksic
Keyword(s):  
Large Scale ◽  
Fruit Trees ◽  
Fruit Production ◽  
Wild Relatives ◽  
Human Consumption ◽  
Scale Production ◽  
Natural Habitats ◽  
Fruit Species ◽  
Wild Fruit ◽  
Indigenous Fruit

Sustainable agriculture means increasing yields and profits without degrading the natural resources which are the most important for agricultural production. The aim is to meet the people?s needs for food and improve the quality of life while preserving the environment. Among hundreds of forest species, particular attention is drawn to the wild relatives of cultivated fruit trees, so called indigenous fruit trees, whose regular collection, production and use can affect all aspects of agricultural economy. The natural habitats of the Republic of Serbia include 15 families and 26 genera with 100 species of wild fruit trees. The primary use of the indigenous fruits is for human consumption (either fresh or processed). A number of wild relatives of cultivated fruit trees could be used in the future as rootstocks for fruit production, or for large-scale production, either organic or conventional. In addition, indigenous fruit species are carriers of genes for resistance to economically important diseases and pests, and they can be used in breeding of fruit trees and grapevines. Wild species of fruit trees are used as planting materials for afforestation and erosion prevention, some for timber production, as well as some decorative forms in landscape architecture, while some species are important bee pastures.

Reproductive Responses of Capsicum annuum to High Temperatures

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 543c-543
Author(s):  
Ami N. Erickson ◽  
Albert H. Markhart
Keyword(s):  
Capsicum Annuum ◽  
High Temperatures ◽  
Fruit Development ◽  
Flower Development ◽  
Fruit Set ◽  
Fruit Production ◽  
Yield Reduction ◽  
Bud Size ◽  
Growth Chambers ◽  
Constant Growth

Fruit yield reduction due to high temperatures has been widely observed in Solanaceous crops. Our past experiments have demonstrated that Capsicum annuum cultivars Ace and Bell Boy completely fail to produce fruit when grown at constant 33 °C. However, flowers are produced, continually. To determine which stages of flower development are sensitive to high temperatures, pepper buds, ranging in size from 1 mm to anthesis, were exposed to high temperatures for 6 hr, 48 hr, 5 days, or for the duration of the experiment. Fruit set for each bud size was determined. Exposure to high temperatures at anthesis and at the 2-mm size stage for 2 or more days significantly reduced fruit production. To determine whether inhibition of pollination, inhibition of fertilization, and/or injury to the female or male structures prevents fruit production at high temperatures, flowers from pepper cultivars Ace and Bell Boy were grown until flowers on the 8th or 9th node were 11 mm in length. Plants were divided between 25 °C and 33 °C constant growth chambers for 2 to 4 days until anthesis. At anthesis, flowers from both treatments were cross-pollinated in all combination, and crosses were equally divided between 33 or 25 °C growth chambers until fruit set or flowers abscised. All flower crosses resulted in 80% to 100% fruit set when post-pollination temperatures were 25 °C. However, post-pollination temperatures of 33 °C significantly reduced fruit production. Reduced fruit set by flowers exposed to high temperatures during anthesis and pollination is not a result of inviable pollen or ovule, but an inhibition of fertilization or initial fruit development.

scholarly journals Alternativas de aprovechamiento de especies de frutas en la Villa Juan Aldama, municipio de Teapa, Tabasco

2018 ◽  
Vol 2 (3) ◽  
pp. 20-30
Author(s):  
Aracely Celina Sánchez Albores ◽  
Liliana Guadalupe Jauregui Beltrán ◽  
Gabriela del Carmen Cornelio Cruz ◽  
Juana Mercedes Mollinedo Casanova
Keyword(s):  
Economic Development ◽  
Field Work ◽  
Fruit Production ◽  
Production Volume ◽  
Pests And Diseases ◽  
Fruit Species ◽  
The Family

La investigación tuvo como objetivo “identificar y analizar alternativas de aprovechamiento de especies de frutas de los cuatro sectores de la Villa Juan Aldama, Teapa, Tabasco, para contribuir a su desarrollo económico”, se toma como muestra 30 propietarios de terrenos en donde se cultivan las frutas, se realiza el trabajo de campo y aplicación del cuestionario, obteniendo resultados de las frutas como es: variedad, volúmenes de producción, épocas de cosecha, usos, mercado, cuidados de las plantas, plagas y enfermedades, participación de la familia época de cosecha, venta entre otros. AbstractThe objective of the research was "to identify and analyze alternatives for the use of fruit species from the four sectors of Villa Juan Aldama, Teapa, Tabasco, to contribute to their economic development", 30 landowners are taken as sample where they are cultivated the fruits, the field work is done and the questionnaire is applied, obtaining fruit results such as: variety, production volumes, harvest times, uses, market, plant care, pests and diseases, participation of the family. of harvest, sale among others. KeywordsFruit species, economic development, fruit production, variety, production volume.

scholarly journals Carbohidratos y Floración en Hesperaloë funifera (Koch) Trel. (Samandoque)

2017 ◽  
pp. 67
Author(s):  
Steven P. Mclaughlin ◽  
Ryan R. Williams
Keyword(s):  
Fruit Set ◽  
Fruit Production ◽  
Hesperaloe Funifera

Several researchers have noted that flowering in Agavaceae requires substantial resources, but few studies have attempted to directly measure such resources. T his study addresses the hypothesis that fruit set in Hesperaloë funifera is limited by available carbohydrates. The accumulation of total non-structural carbohydrates (TNC) prior to flowering was measured, and total requirements for carbohydrate were estimated. Hesperaloë funifera was found to accumulate fructans, and roots were an important organ for storage of accumulated carbohydrates. Carbohydrates stored in the plant prior to flowering are sufficient to meet only about onethird of the carbohydrate needed to produce an average inflorescence with 1 % to 2% fruit set. All of the carbohydrate produced by photosynthesis from May through August is needed to support flowering and fruit production. Low percentage fruit set in Hesperaloë funifera is probably due to a deficiency of carbohydrate resources.

scholarly journals Vegetative propagation of native fruit species of páramo Thibaudia floribunda and Cavendishia bracteata by cuttings

2017 ◽  
Vol 35 (1) ◽  
pp. 12-22
Author(s):  
Lina María López C. ◽  
Mariam Vásquez M. ◽  
Héctor Lancheros R. ◽  
Stanislav Magnitskiy
Keyword(s):  
Acetic Acid ◽  
Adventitious Roots ◽  
Naphthalene Acetic Acid ◽  
Fruit Species ◽  
Wild Fruit ◽  
The Andes ◽  
Shoot Production ◽  
Parenchyma Cells ◽  
Rooting Of Cuttings ◽  
Andes Region

Cavendishia bracteata and Thibaudia floribunda (Ericaceae) are wild fruit shrubs native to the Andes region. This study aimed to characterize the rooting potential of basal and apical cuttings using naphthalene acetic acid (NAA) in different concentrations (0, 200, 500, or 1,000 mg L-1). In C. bracteata, the cutting position on the branch affected its sprouting and rooting, with apical cuttings presenting the best performance with auxin application. The rooting of cuttings was more successful in C. bracteata than in T. floribunda. NAA applications between 200 to 500 mg L-1 were more suitable for the propagation of C. bracteata due to the higher percentages of rooting and shoot production. For propagation of T. floribunda, the use of apical cuttings without the application of auxins is recommended. Adventitious roots in cuttings of both species were originated from parenchyma cells of the stem.

scholarly journals Cryphalus eriobotryae sp. nov. (Coleoptera: Curculionidae: Scolytinae), a New Insect Pest of Loquat Eriobotrya japonica in China

Insects ◽  
2019 ◽  
Vol 10 (6) ◽  
pp. 180 ◽  
Author(s):  
Sizhu Zheng ◽  
Andrew J. Johnson ◽  
You Li ◽  
Chunrong Chu ◽  
Jiri Hulcr
Keyword(s):  
New Species ◽  
Bark Beetle ◽  
Insect Pest ◽  
Fruit Production ◽  
The Other ◽  
Eriobotrya Japonica ◽  
Beetle Species ◽  
Ornamental Trees

A previously unknown bark beetle species, Cryphalus eriobotryae sp. nov. Johnson, 2019 has emerged as a lethal pest of loquat (Eriobotrya japonica) in China. The description of new species has been provided. The new species is distinguished from the other Cryphalus by the weakly aciculate frons, by the antennae, with unevenly spaced procurved sutures, by the short pronotal disc, with hair-like setae, and by the widely spaced mesocoxae. The survey of plantation records from around Suzhou suggests that this beetle was introduced from another area not long before 2017. In the surveyed loquat plantation in 2018, 20–90% of trees showed signs of infestation, and 5% were killed in 2018, resulting in the death of over 1000 trees. Outbreaks of the apparently loquat-specific Cryphalus eriobotryae can be diagnosed by hundreds of cankers on the trunk, and wilted foliage. This pest is of concern as a loquat plantation pest and as a pest of fruit production and ornamental trees within Suzhou, and globally.

scholarly journals New records of fruit trees as host for Neosilba species (Diptera, Lonchaeidae) in southeast Brazil

2017 ◽  
Vol 17 (1) ◽  
Author(s):  
Laura Jane Gisloti ◽  
Manoel A. Uchoa ◽  
Angelo Prado
Keyword(s):  
Species Diversity ◽  
Host Plants ◽  
New Records ◽  
Fruit Trees ◽  
Fruit Production ◽  
Native Plant ◽  
Native Plant Species ◽  
Paulo State ◽  
Host Fruit ◽  
Fruit Species

Abstract Fruits of thirty-five cultivated native plant species (19 orders and 12 families) were sampled in farms of fruit production from two municipalities of São Paulo state, Brazil (January 2010 to March 2012) to evaluate species diversity of Neosilba flies. Thirty-one species of plants were the host for Neosilba species while four were not infested. Some aspects of the biology and patterns of species diversity, abundance, infestation rates, puparias viability and the interactions among species of frugivorous flies and their host plants were quantified. Seven species of Neosilba were reared: Neosilba bella Strikis & Prado (4 hosts), Neosilba certa (Walker) (4 hosts), Neosilba glaberrima (Wiedemann) (5 hosts), Neosilba inesperata Strikis & Prado (6 hosts) Neosilba pendula (Bezzi) (15 hosts), Neosilba pradoi Strikis & Lerena (8 hosts) and Neosilba zadolicha McAlpine (26 hosts). The association between the lance flies and the host fruit species is discussed.

scholarly journals Rainfall, Fruiting Phenology, and the Nesting Season of White-Crowned Pigeons in the Upper Florida Keys

The Auk ◽  
2000 ◽  
Vol 117 (2) ◽  
pp. 416-426 ◽  
Author(s):  
G. Thomas Bancroft ◽  
Reed Bowman ◽  
Richard J. Sawicki
Keyword(s):  
Breeding Season ◽  
Deciduous Forest ◽  
Florida Keys ◽  
Fruit Production ◽  
Climatic Conditions ◽  
Fruit Species ◽  
Large Peak ◽  
Nesting Patterns ◽  
Protein Rich ◽  
Nesting Season

AbstractWhite-crowned Pigeons (Columba leucocephala) varied their timing of breeding and nesting intensity in response to variation in production of the four most important fruit species in their breeding-season diet in the upper Florida Keys. From 1988 through 1990, we monitored fruit production year-round in five habitats in which pigeons foraged and monitored all pigeon nests along two transects on Middle Butternut Key. Annually, pigeon breeding was positively correlated with summer rains and with the peak in overall fruit production. However, within the breeding season, only the availability of Metopium toxiferum was positively correlated with rainfall and the number of new clutches initiated. Both the timing and magnitude of breeding varied annually. In 1988, when Metopium was more available, more pigeons nested, the nesting season started earlier and lasted longer, and a large peak in nesting occurred when Metopium fruit ripened. During 1989 and 1990, when the relative availability of Metopium was lower, fewer pigeons nested, the nesting season was shorter, and the seasonal peak in nesting associated with Metopium fruit was reduced or absent. Nesting patterns did not appear to vary with changes in the relative availability of other fruits. White-crowned Pigeons appear to prefer Metopium fruits to other species. Because pigeons do not supplement nestling diets with arthropods, but augment their diets with protein-rich crop milk, they may depend on lipid-rich fruits such as Metopium to provide the energy for breeding and crop-milk production. Metopium fruit production may be influenced by rainfall and climatic conditions, both of which may vary spatially within the range of White-crowned Pigeons in Florida. Evidence that pigeons shift foraging sites when Metopium availability varies emphasizes the need to preserve large tracts of seasonal deciduous forest in the Keys and to protect Metopium trees in suburban areas where they are removed because they cause contact dermatitis in humans.

Host range and species diversity of Tephritidae of three plant formations in Western Burkina Faso

2020 ◽  
Vol 110 (6) ◽  
pp. 732-742
Author(s):  
Issaka Zida ◽  
Souleymane Nacro ◽  
Rémy Dabiré ◽  
Laura Moquet ◽  
Hélène Delatte ◽  
...  
Keyword(s):  
Burkina Faso ◽  
Host Range ◽  
Fruit Fly ◽  
Bactrocera Dorsalis ◽  
Indigenous Plants ◽  
New Host ◽  
Host Fruit ◽  
Fruit Species ◽  
Wild Fruit ◽  
Western Burkina Faso

AbstractIn Western Burkina Faso, the host range of fruit flies was evaluated in three plant formations between May 2017 and April 2019. Samples of 61 potential hosts were collected and incubated for fruit fly emergence. Twenty-seven hosts including cultivated and wild fruit were identified. Among cultivated fruit species, mango, and guava were the most infested while high infestation incidences were observed in the fruit of the indigenous plants Vitellaria paradoxa, Annona senegalensis, Sarcocephalus latifolius, and Saba senegalensis. Low infestation rates were observed in Anacardium occidentale, Citrus species, Opilia celtidifolia, and Cissus populnea. The highest infestation index (1648.57 flies kg−1) was observed from V. paradoxa. Eleven new host fruit infested with many fruit fly species are reported in Burkina Faso. A total of 18 fruit fly species were reared; Bactrocera dorsalis (42.94%), Ceratitis cosyra (29.93%), and Ceratitis silvestrii (22.33%) dominated those that emerged. Four fruit fly species have been detected for the first time in Burkina Faso. The main suitable fruit hosts are abundant and available from May through August during the rainy season and become rare and have low infestation from November to April during the dry season. This is the first study of its kind in the region. This study shows that the three plant formations had an impact on population dynamics of the three tephritid species of economic importance in Western Burkina Faso. This information should be integrated into the development of a fruit fly pests management strategy.

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