scholarly journals Requirement for Pollenizer in New Monoecious Hybrid Cucumber ‘NC-Sunshine’

2012 ◽  
Vol 22 (2) ◽  
pp. 191-195 ◽  
Author(s):  
Todd C. Wehner ◽  
Rakesh Kumar
Keyword(s):  
Cucumis Sativus ◽  
Cucurbita Pepo ◽  
Fruit Set ◽  
Yield Traits ◽  
Marketable Yield ◽  
Cucumber Yield

Monoecious cucumber (Cucumis sativus) plants generally produce enough pollen for fruit set. The amount of pollen required for fruit set depends on the number of pistillate flowers produced by the cultivar. ‘NC-Sunshine’ is a new monoecious slicing hybrid cucumber with a high percentage of pistillate nodes. Because of the high percentage of pistillate nodes, a pollenizer might be required to maximize pollination to get high total and early yield. Hence, an experiment was conducted at three locations to evaluate the effect of the pollenizer ‘Poinsett 76’ on yield of ‘NC-Sunshine’ compared with no pollenizer ‘Gray Zucchini’ squash (Cucurbita pepo). Differences (P ≥ 0.05) due to pollenizer, location, and the interaction of pollenizer and location on ‘NC-Sunshine’ yield traits were detected. Pollenizer influenced cucumber yield at two of three locations. Results indicated that the pollenizer ‘Poinsett 76’ significantly increased total, marketable, and early yield of ‘NC-Sunshine’. The percentage of early and marketable yield was also higher with the pollenizer ‘Poinsett 76’. In addition, the use of a pollenizer decreased cull yield. Therefore, a pollenizer is needed for monoecious hybrids having a high percentage of pistillate nodes.

scholarly journals Optimum Planting Dates for Intercropping Cucumber, Squash, and Muskmelon with Strawberry

2008 ◽  
Vol 18 (4) ◽  
pp. 656-659 ◽  
Author(s):  
Bielinski M. Santos ◽  
Camille E. Esmel ◽  
Silvia Slamova ◽  
Elizabeth A. Golden
Keyword(s):  
Cucumis Sativus ◽  
Cucumis Melo ◽  
Cucurbita Pepo ◽  
Field Trials ◽  
Planting Dates ◽  
Air Temperatures ◽  
Summer Squash ◽  
Cucumber Yield

Three separate field trials were conducted to determine the most appropriate planting dates for intercropping cucumber (Cucumis sativus), summer squash (Cucurbita pepo), and muskmelon (Cucumis melo) with strawberry (Fragaria ×ananassa), and their effect on ‘Strawberry Festival’ strawberry yields. ‘Straight Eight’ cucumber, ‘Crookneck’ summer squash, and ‘Athena’ muskmelon were planted every 15 days from 25 Jan. to 23 March. None of the three intercropped species affected strawberry yield up to 60 days before the end of the season on 25 March. Cucumber yield responded quadratically to planting dates, rapidly increasing from 25 Jan. to 23 Feb. and declining afterward. Warmer temperatures favored summer squash yield, with the highest yields when planted on 23 Feb. or later. Muskmelon yields decreased as air temperatures increased, and the best planting dates were between 25 Jan. and 9 Feb. In summary, cucumber and summer squash seemed to be favored by planting under warmer temperatures, whereas muskmelon thrives under cooler weather.

Critical Period for Palmer Amaranth (Amaranthus palmeri) Control in Pickling Cucumber

2018 ◽  
Vol 32 (5) ◽  
pp. 586-591
Author(s):  
Samuel J. McGowen ◽  
Katherine M. Jennings ◽  
Sushila Chaudhari ◽  
David W. Monks ◽  
Jonathan R. Schultheis ◽  
...  
Keyword(s):  
North Carolina ◽  
Critical Period ◽  
Relative Yield ◽  
Field Studies ◽  
Palmer Amaranth ◽  
Amaranthus Palmeri ◽  
Marketable Yield ◽  
Yield Data ◽  
Pickling Cucumber ◽  
Cucumber Yield

AbstractField studies were conducted in North Carolina to determine the critical period for Palmer amaranth control (CPPAC) in pickling cucumber. In removal treatments (REM), emerged Palmer amaranth were allowed to compete with cucumber for 14, 21, 28, or 35 d after sowing (DAS) in 2014 and 14, 21, 35, or 42 DAS in 2015, and cucumber was kept weed-free for the remainder of the season. In the establishment treatments (EST), cucumber was maintained free of Palmer amaranth by hand removal until 14, 21, 28, or 35 DAS in 2014 and until 14, 21, 35, or 42 DAS in 2015; after this, Palmer amaranth was allowed to establish and compete with the cucumber for the remainder of the season. The beginning and end of the CPPAC, based on 5% loss of marketable yield, was determined by fitting log-logistic and Gompertz equations to the relative yield data representing REM and EST, respectively. Season-long competition by Palmer amaranth reduced pickling cucumber yield by 45% to 98% and 88% to 98% during 2014 and 2015, respectively. When cucumber was planted on April 25, 2015, the CPPAC ranged from 570 to 1,002 heat units (HU), which corresponded to 32 to 49 DAS. However, when cucumber planting was delayed 2 to 4 wk (May 7 and May 21, 2014 and May 4, 2015), the CPPAC lasted from 100 to 918 HU (7 to 44 DAS). This research suggested that planting pickling cucumber as early as possible during the season may help to reduce competition by Palmer amaranth and delay the beginning of the CPPAC.

scholarly journals EFEITO DO NÍVEL DE UMEDECIMENTO DO SUBSTRATO SOBRE A GERMINAÇÃO DE CUCURBITACEAS

1993 ◽  
Vol 23 (2) ◽  
pp. 157-160 ◽  
Author(s):  
Nilson Lemos de Menezes ◽  
Terezinha Lucia Denardin da Silveira ◽  
Lindolfo Storck
Keyword(s):  
Cucumis Sativus ◽  
Cucumis Melo ◽  
Cucurbita Pepo

Avaliou-se a germinação e o tamanho inicial das plântulas de pepino (Cucumis sativus), melancia (Citrulius lanatus), melão (Cucumis melo) e mogango (Cucurbita pepo) cujas sementes foram submetidas as condições do teste padrão de germinação, em rolos de papel toalha, umedecidas com as seguintes quantidades de água: 1,0; 1,5; 2,0; 2,5; 3,0 e 3,5 vezes o peso do papel. Os graus de umedecimento que proporcionam as maiores porcentagens de germinação para pepino e melancia são 2,0 a 2,5 vezes o peso do papel. Para o melão os melhores resultados de germinação são conseguidos com graus de umedecimento de 2,0 a 3,0 vezes o peso do papel, enquanto que para o mogango as quantidades de água requeridas são maiores do que para as demais espécies, devido ao maior tamanho de suas sementes. O aumento da quantidade de água no substrato proporciona aumentos no tamanho da parte aérea das Cucurbitaceas, porém o comprimento das raízes pode sofrer reduções variáveis, de acordo com a espécie estudada, quando a umidade está acima da faixa considerada ideal.

Phytoextraction of Weatheredp,p′-DDE by Zucchini (Cucurbita pepo) and Cucumber (Cucumis sativus) Under Different Cultivation Conditions

2004 ◽  
Vol 6 (4) ◽  
pp. 363-385 ◽  
Author(s):  
Xiaoping Wang ◽  
Jason C. White ◽  
Martin P. N. Gent ◽  
William Iannucci-Berger ◽  
Brian D. Eitzer ◽  
...  
Keyword(s):  
Cucumis Sativus ◽  
Cucurbita Pepo ◽  
Cultivation Conditions

scholarly journals Response of Cucumber (Cucumis sativus L.) and Squash (Cucurbita pepo L. var. melopepo) Roots to Chilling Stress during Early Stages of Seedling Development

1994 ◽  
Vol 119 (5) ◽  
pp. 964-970 ◽  
Author(s):  
Eleazar Reyes ◽  
Paul H. Jennings
Keyword(s):  
Root Growth ◽  
Cucumis Sativus ◽  
Cucurbita Pepo ◽  
Chilling Stress ◽  
Dry Weight ◽  
Root Tip ◽  
Crop Species ◽  
Cucumis Sativus L ◽  
Chilling Temperatures ◽  
Cucumber Roots

Roots of `Golden Girl' squash (Cucurbita pepo var. melopepo) and `Encore' cucumber (Cucumis sativus L.), 4- and 3-days-old, respectively, were exposed to 2, 6, 10, and 15C for 24, 48, 96, 144, and 192 hours to compare the sensitivity to chilling temperatures and the subsequent recovery at more favorable temperatures. Seedlings were more sensitive to chilling at 2 and 6C when measured by their ability to resume growth when returned to 26C. Root growth decreased after 48 hours of chilling. Seedlings stressed at 10 and 15C were able to continue root growth at these temperatures and when returned to 26C. However, seedlings at 10C exhibited root-tip browning in both crop species, suggesting disfunction in metabolic pathways that were repressed in seedlings growing at 2C where those symptoms were not present. Effects on root dry weight occurred in the first 24 hours at all temperatures studied. After 96 hours of treatment, seedlings grown at 2 and 6C were irreversibly damaged, as evidenced by their inability to resume growth when returned to 26C. Leakage of electrolytes from squash and cucumber roots increased after 48 hours at 2C. Potassium, Na+, and PO4-2 were lost in greater amounts than Mg+2, Cl-, and SO4-2. No difference in ionic leakage occurred at 10 and 15C, and Ca+2 leakage was not detected at any chilling stress temperature.

scholarly journals Feasibility of Trellised Cucumber Production

HortScience ◽  
1991 ◽  
Vol 26 (9) ◽  
pp. 1156-1158 ◽  
Author(s):  
V.M. Russo ◽  
B.W. Roberts ◽  
R.J. Schatzer
Keyword(s):  
Economic Analysis ◽  
Cucumis Sativus ◽  
Management System ◽  
Fruit Weight ◽  
The Other ◽  
Small Scale ◽  
Fresh Market ◽  
Marketable Yield ◽  
Marketable Fruit

Trellising was evaluated for its effects on yields of cucumber (Cucumis sativus L.) cultivars Dasher II, Marketmore 76, and PetoTripleMech at Lane and Wilbutton, Okla. Trellising improved total and marketable yield at both locations compared with ground culture. `PetoTripleMech', evaluated as a fresh-market cultivar, produced yields equal to, or higher than, the other cultivars. Average marketable fruit weight was not affected by trellising but was affected by cultivar at Lane, with `PetoTripleMech' having the heaviest fruit. Economic analysis indicated that trellising is a viable management system for small-scale cucumber production.

scholarly journals Hemagglutinating and acid phosphatase (AcPASE) activities in developing seedlings of four species of Cucurbitaceae

2014 ◽  
Vol 68 (4) ◽  
pp. 291-297
Author(s):  
Irena Lorenc-Kubis ◽  
Urszula Uram-Walaszczyk
Keyword(s):  
Acid Phosphatase ◽  
Western Blot ◽  
Cucumis Sativus ◽  
Cucurbita Pepo ◽  
Cucurbita Maxima ◽  
Dot Blot ◽  
Con A ◽  
Seeds Germination

The acid phosphatase and hemagglutinating activities of four species of <em>Cucurbitaceae</em> were determined during seeds germination and seedlings development. In all cases traces of enzyme and hemagglutinating activities were found in dry and imbibided seeds. In developing seedlings of <em>Cucumis sativus</em> the activities increased to maximum on the 3rd day while in other species on the 6th day of germination and than fell down. Dot blot and Western blot techniques have shown that in seeds and seedlings of all investigated species present were proteins which cross-reacted with antibodies raised against lectins: CLBa and Con A. It has been shown that proteins from seeds and seedlings of <em>Cucurbita maxima</em> var. <em>bambino</em>, <em>Cucurbita pepo</em> var. <em>giromontia</em> and <em>Cucumis sativus</em> had more pronounced antigenical similarity to lectin CLBa (from <em>Cucurbitaceae</em>) than Con A, while proteins from cotyledons of <em>Cucurbita pepo</em> var. <em>patissonina</em> reacted better with antibodies raised against Con A (the lectin from <em>Papilionaceae</em>) than with CLBa.

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