PUMPKIN: BIOCHEMICAL COMPOSITION OF CUCURBITA SPP. ACCESSIONS FROM THE VIR COLLECTION

2021 ◽  
Author(s):  
T.M. PISKUNOVA ◽  
◽  
A.E. SOLOVEVA ◽  
Z.F. MUTEVA ◽  
◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Biochemical Composition ◽  
Cucurbita Pepo ◽  
Food Products ◽  
Source Material ◽  
Cucurbita Moschata ◽  
Cucurbita Maxima ◽  
Biochemical Indicators ◽  
Biochemical Compounds ◽  
Cultivation Site

The catalogue describes 151 accessions of Cucurbita maxima Duch., Cucurbita moschata Duch. ex. Poir., and Cucurbita pepo L. in the context of their most important biochemical indicators assessed on the cultivation site at Pushkin and Pavlovsk Laboratories of VIR (St. Petersburg). The aim of this catalogue is to assist plant breeders and researchers interested in studying the genetic diversity of Cucurbita spp. in their search for source material that could be used for the development of new pumpkin cultivars with higher content of valuable biochemical compounds in order to expand the assortment of food products in functional, medicinal and prophylactic diets.

scholarly journals Chaves analíticas para determinação de cultivares de aboboreiras, morangueiras e mogangueiras

1980 ◽  
Vol 37 (2) ◽  
pp. 757-761
Author(s):  
Luiz Antonio Rochelle
Keyword(s):  
Cucurbita Pepo ◽  
Cucurbita Moschata ◽  
Cucurbita Maxima

De sete cultivares de aboboreiras rasteiras, pertencentes à espécie Cucurbita moschata Duch., duas morangueiras e duas mogangueiras, da espécie Cucurbita maxima Duch., uma aboboreira nao rasteira e uma morangueira pertencente a Cucurbita pepo L., elaborou-se chaves analíticas para determina-los, fundamentando-se nos caracteres morfológicos do caule e das folhas.

scholarly journals Evaluation of Winter Squash and Pumpkin Cultivars for Age-related Resistance to Phytophthora capsici Fruit Rot

HortScience ◽  
2016 ◽  
Vol 51 (10) ◽  
pp. 1251-1255 ◽  
Author(s):  
Charles S. Krasnow ◽  
Mary K. Hausbeck
Keyword(s):  
Cucurbita Pepo ◽  
Disease Incidence ◽  
Phytophthora Capsici ◽  
Genetic Resistance ◽  
Fruit Rot ◽  
Infested Soil ◽  
Cucurbita Moschata ◽  
Cucurbita Maxima ◽  
Age Related ◽  
Winter Squash

Phytophthora capsici annually threatens production of cucurbit and solanaceous crops. Long-lived oospores produced by the pathogen incite primary infection of susceptible plants when conditions are wet. Limiting the rot of winter squash and pumpkin (Cucurbita sp.) fruits is difficult due to the long maturation period when fruits are often in direct contact with infested soil. Genetic resistance to fruit rot is not widely available within Cucurbita sp.; however, age-related resistance (ARR) to P. capsici fruit rot develops in specific cultivars during maturation. The objective of this study was to evaluate the fruits of 12 cultivars of Cucurbita pepo, Cucurbita moschata, and Cucurbita maxima for ARR to P. capsici using a mycelial-plug inoculation method. All Cucurbita pepo and Cucurbita moschata cultivars displayed ARR; 7 days postpollination (dpp) fruits were susceptible, limited lesion development occurred on fruits 22 dpp, and lesions did not develop at 56 dpp. Disease developed on both Cucurbita maxima cultivars tested at 7, 14, 22, and 56 dpp. Firmness of fruit exocarps was measured with a manual penetrometer. Exocarp firmness of all cultivars increased during maturation; however, there was no correlation between firmness and disease incidence among cultivars at 22 dpp (R2 = −0.01, P = 0.85). When fruits of cultivars expressing ARR at 22 dpp were wounded before inoculation, fruit rot developed.

scholarly journals Estudo pomológico comparativo das cultivares de cucurbita

1976 ◽  
Vol 33 (0) ◽  
pp. 157-165
Author(s):  
Luiz Antonio Rochelle
Keyword(s):  
Cucurbita Pepo ◽  
Cucurbita Moschata ◽  
Cucurbita Maxima

O presente trabalho teve por finalidade descrever comparativamente as características morfológicas dos frutos e das sementes de 13 cultivares de Cucurbita. Para identificar e classificar botanicamente as espécies das cultivares em estudo, servimo-nos da chave descrita por Bailey, que considera entre outras, as características dos pedúnculos dos frutos e as características das sementes. Desta maneira separamos as cultivares em três espécies: Cucurbita moschata Duchesne com as seguintes cultivares: 'Menina-verde', Taça', 'Tatui', Menina-amarela', 'Canhão', 'Redonda-de-amparo' e 'Menina-creme'. Da espécie Cucurbita maxima Duchesne estudamos os frutos e as sementes das cultivares 'Exposição', 'Coroa', Όn-de-ganso' e 'Mogango-verde' e para Cucurbita pepo Linneu as cultivates 'Small-sugar' e 'Cas-erta'. Realizamos o referido trabalho no Campo Experimental do Departamento de Agricultura-Horticultura da ESALQ, em Piracicaba, e as cultivares estudadas são as mais recomendadas pela Secção de Olericultura do Instituto Agronômico de Campinas. Foram semeadas de cada cultivar 3 a 5 sementes por cova e repetidas por 10 vezes. De cada planta adulta colhemos 3 frutos e nos frutos anotamos as seguintes características morfológicas: coloração do epicarpo, forma, resistência da casca, dimensões e peso; semente: dimensões, número de sementes normais e anormais, peso das sementes.

scholarly journals DIFFERENTIAL TOLERANCE OF PUMPKIN SPECIES TO BENTAZON, METRIBUZIN, TRIFLURALIN, AND OXYFLUORFEN

2017 ◽  
Vol 35 (0) ◽  
Author(s):  
I. NOSRATTI ◽  
S. MAHDAVI-RAD ◽  
H. HEIDARI ◽  
M. SAEIDI
Keyword(s):  
Cucurbita Pepo ◽  
Growth Stages ◽  
Cucurbita Moschata ◽  
Cucurbita Maxima ◽  
Pot Experiments ◽  
Lagenaria Vulgaris

ABSTRACT Response of pumpkin species including Cucurbita pepo convar. Pepo, Cucurbita moschata Duch, Cucurbita pepo, Cucurbita maxima, and Lagenaria vulgaris to bentazon, trifluralin, metribuzin, and oxyfluorfen was evaluated in Outdoor pot experiments in 2014 and 2015. Different postemergence doses (bentazon and oxyfluorfen) and preplant incorporated (metribuzin and trifluralin) herbicides were evaluted on pumpkin species at various growth stages. Results showed that the sensitivity of pumpkins species to applied herbicide varied greatly among tested species. On overall, dry weights of Cucurbita spp. were reduced by 12.50%, 48.60%, 23%, and 73.13% when pumpkin was treated with trifluralin, metribuzin, bentazon and oxyfluorfen, respectively. Pumpkin crops were not tolerant of metribuzin and oxyfluorfen and plants showed injures. Results indicated that trifluralin and bentazon have the potential for possible application in pumpkin particularly when broadleaf weeds are dominant.

Response of Cucurbits to Certain Analogs of Chloramben

Weed Science ◽  
1971 ◽  
Vol 19 (5) ◽  
pp. 491-495 ◽  
Author(s):  
J. A. Ivany ◽  
R. D. Sweet
Keyword(s):  
Methyl Ester ◽  
Cucumis Melo ◽  
Cucurbita Pepo ◽  
Field Experiments ◽  
Severely Injured ◽  
Cucurbita Moschata ◽  
Cucurbita Maxima ◽  
Root Exposure ◽  
Mixed Salts ◽  
Variable Susceptibility

Greenhouse and field experiments were conducted to compare the response of cucumber (Cucumis sativus L. ‘Ashley’), muskmelon (Cucumis melo L. ‘Delicious 51’), watermelon (Citrillus vulgaris L. ‘Charleston Grey’), and three winter squashes (Cucurbita moschata Duch. ex Poir. ‘Butternut’, Cucurbita pepo L. ‘Table Queen’, and Cucurbita maxima Duch. ‘Boston Marrow’) to 3-amino-2,5-dichlorobenzoic acid (chloramben) and six of its analogs (ammonium salt, amide, mixed salts, methyl ester, hydroxy propyl ester, and butoxy ethyl ester). There were little differences among the analogs except the amide was generally nontoxic to all test crops and weeds. Great differences in growth were noted among species. When chloramben was incorporated in the soil, cucumber and watermelon were very susceptible to all analogs except the amide. Muskmelon was tolerant of all analogs. Squashes exhibited variable susceptibility with ‘Butternut’ the least tolerant, ‘Table Queen’ intermediate, and ‘Boston Marrow’ quite tolerant of the analogs. Separation of exposure of the germinating and emerging seedling on the basis of root or shoot showed cucumber to be most susceptible to root exposure but also susceptible to shoot exposure. Muskmelon and ‘Boston Marrow’ squash were susceptible to root exposure but not to shoot exposure. Muskmelon was not susceptible to either hypocotyl or cotyledon exposure, but cucumber was susceptible to both these treatments. All three species were severely injured by postemergence sprays of chloramben.

Genetic diversity of Cucurbita pepo L. and Cucurbita moschata Duchesne accessions using fruit and seed quantitative traits

2018 ◽  
Vol 8 ◽  
pp. 60-66
Author(s):  
Reza Darrudi ◽  
Vahideh Nazeri ◽  
Forouzandeh Soltani ◽  
Majid Shokrpour ◽  
Marria Raffaella Ercolano
Keyword(s):  
Genetic Diversity ◽  
Quantitative Traits ◽  
Cucurbita Pepo ◽  
Cucurbita Moschata

Cunninghamella echinulata. [Descriptions of Fungi and Bacteria].

1966 ◽  
Author(s):  
A. K. Sarbhoy
Keyword(s):  
Geographical Distribution ◽  
World Wide ◽  
Cucurbita Pepo ◽  
Cucurbita Maxima ◽  
Tropical Countries ◽  
Cunninghamella Echinulata

Abstract A description is provided for Cunninghamella echinulata. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On decaying flowers of Cucurbita pepo, dung and soil. DISEASE: Reported pathogenic to Spanish pumpkin (Cucurbita maxima) at Chandigarh and neighbouring villages in the Punjab, India by Grover (1965). Symptoms recognizable when the flowers begin to die off gradually. Diseased flowers do not open properly. Infected flowers are covered with the cottony mycelium of the pathogen and infected fruits may become detached from the plant and continue to rot on the soil. Leaves and stalks are also frequently infected. GEOGRAPHICAL DISTRIBUTION: World-wide (mostly tropical countries). TRANSMISSION: Air borne; may survive in fragments of mummified pumpkin fruit up to 32 months.

Physicochemical Properties and Antioxidant Activity of the Seeds Oil of Two Cucurbita Species From Bejaia (Algeria): Comparative Study

2021 ◽  
Author(s):  
S. Mindjou ◽  
F. Brahmi ◽  
W. Belkhiri ◽  
N. Adjeroud ◽  
L. Benali ◽  
...  
Keyword(s):  
Physicochemical Parameters ◽  
Cucurbita Pepo ◽  
Seed Oil ◽  
Oil Quality ◽  
Waste Product ◽  
International Standards ◽  
Cucurbita Moschata ◽  
Phenolic Contents ◽  
Methanolic Extracts

Cucurbita species are delicious, nutritious, and delightful products. Cucurbita seeds remain in large quantities as a waste product that could be valorized since they are excellent sources of oil. The aim of this study was to compare the seed oil of two Cucurbita species (Cucurbita pepo and Cucurbita moschata) harvested in Bejaia (Algeria). The oil quality was evaluated by the determination of some physicochemical parameters, and the content of phenolic compounds. The antiradical capacity of the antioxidants present in the oils was also assessed using two methods. The oil yield was 42.85% and 40.47% from the seeds of Cucurbita pepo and Cucurbita moschata, respectively. The determined physicochemical parameters were close to those defined by the international standards. The phenolic contents of the methanolic extracts of both oils were 5.53 and 4.45 mg GAE/100 g for Cucurbita moschata and Cucurbita pepo, respectively. The best anti-DPPH power was attributed to the oil of Cucurbita moschata (44.7%), while the methanolic extract of the seed oil of Cucurbita pepo showed the highest percentage (41.02%) of the ABTS•+ radical inhibition. By this study we confirmed that the Cucurbita seeds oil are highly nutritious and offer some medicinal benefits.

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