The Experts below are selected from a list of 57 Experts worldwide ranked by ideXlab platform
Ondrej Hegedűs - One of the best experts on this subject based on the ideXlab platform.
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quantitative and qualitative parameters in Acorn Squash cultivar in the conditions of the slovak republic
Potravinarstvo, 2018Co-Authors: Miroslav Šlosár, Ivana Mezeyová, Alžbeta Hegedűsová, Ondrej HegedűsAbstract:The species Cucurbita pepo includes several types of Squashes; in Slovak Republic, well-known and oftenly grown Squash types are patisson, zucchini, spaghetti Squash, oil pumpkin etc. Several interesting Squash types of Cucurbita pepo are grown abroad, including Acorn Squash which is well-known mainly in USA. The aim of this study was to evaluate the important quantitative (yield per hectare, average fruit weight) and qualitative (total carotenoids, ascorbic acid, antioxidant activity, total soluble solids) yield parameters of Acorn Squash fruits in comparison with patisson which is typical Squash type of Cucurbita pepo in Slovak Republic. The field trial was realised in Kosice-Saca in 2016. Within experiment, four cultivars of Acorn type pumpkin were tested (Thelma Sanders; Jet Set; Table Gold; Cream of The Crop). The patisson 'Orfeus' was used as a comparative cultivar for evaluation of individual parameters of Acorn type pumpkin cultivars. Matured pumpkin fruits were harvested on the 7th September 2016. From aspect of yield quantity, Acorn cultivars are appeared as very interesting Squash type with good yield potential for growing. The highest yield of Squash fruits was found in the cultivar 'Cream of The Crop' (17.8 t.ha-1). In mentioned Acorn cultivar, the yield was higher about 87.4% compared to the tested patisson cultivar 'Orfeus' (9.5 t.ha-1). On the contrary, the average weight of Squash fruits was reached in patisson cultivar 'Orfeus' (780.7 g). The qualitative parameters of fruits were expressively influenced by Squash cultivar. The content of total carotenoids, ascorbic acid and total soluble solids was markedly higher in all Acorn cultivars, compared to the patisson cultivar 'Orfeus'. The highest content of total carotenoids (26.74 mg.kg-1 fresh weight) and ascorbic acid (238.79 mg.kg-1 f. w.) was found in the Squash cultivar 'Table Gold'. The highest content of total soluble solids was determined in the cultivar 'Jet Set' (3.8 °Brix). On the contrary, the highest antioxidant activity (DPPH) was found in the patisson cultivar 'Orfeus' (10.80 %). On the basis of obtained results, it is possible to state that Acorn cultivars are very interesting Squash type with promising yield potential for possible growing in conditions of Slovak Republic. In addition, Acorn Squashes were expressed by higher content of several nutritional parameters compared to the typical Squash type - patisson. Thus, these Squashes could be an interesting vegetable for human nutrition.
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Quantitative and qualitative parameters in Acorn Squash cultivar in the conditions of the Slovak Republic
HACCP Consulting, 2018Co-Authors: Miroslav Šlosár, Ivana Mezeyová, Alžbeta Hegedűsová, Ondrej HegedűsAbstract:The species Cucurbita pepo includes several types of Squashes; in Slovak Republic, well-known and oftenly grown Squash types are patisson, zucchini, spaghetti Squash, oil pumpkin etc. Several interesting Squash types of Cucurbita pepo are grown abroad, including Acorn Squash which is well-known mainly in USA. The aim of this study was to evaluate the important quantitative (yield per hectare, average fruit weight) and qualitative (total carotenoids, ascorbic acid, antioxidant activity, total soluble solids) yield parameters of Acorn Squash fruits in comparison with patisson which is typical Squash type of Cucurbita pepo in Slovak Republic. The field trial was realised in Košice-Šaca in 2016. Within experiment, four cultivars of Acorn type pumpkin were tested (Thelma Sanders; Jet Set; Table Gold; Cream of The Crop). The patisson 'Orfeus' was used as a comparative cultivar for evaluation of individual parameters of Acorn type pumpkin cultivars. Matured pumpkin fruits were harvested on the 7th September 2016. From aspect of yield quantity, Acorn cultivars are appeared as very interesting Squash type with good yield potential for growing. The highest yield of Squash fruits was found in the cultivar 'Cream of The Crop' (17.8 t.ha-1). In mentioned Acorn cultivar, the yield was higher about 87.4% compared to the tested patisson cultivar 'Orfeus' (9.5 t.ha-1). On the contrary, the average weight of Squash fruits was reached in patisson cultivar 'Orfeus' (780.7 g). The qualitative parameters of fruits were expressively influenced by Squash cultivar. The content of total carotenoids, ascorbic acid and total soluble solids was markedly higher in all Acorn cultivars, compared to the patisson cultivar 'Orfeus'. The highest content of total carotenoids (26.74 mg.kg-1 fresh weight) and ascorbic acid (238.79 mg.kg-1 f. w.) was found in the Squash cultivar 'Table Gold'. The highest content of total soluble solids was determined in the cultivar 'Jet Set' (3.8 °Brix). On the contrary, the highest antioxidant activity (DPPH) was found in the patisson cultivar 'Orfeus' (10.80 %). On the basis of obtained results, it is possible to state that Acorn cultivars are very interesting Squash type with promising yield potential for possible growing in conditions of Slovak Republic. In addition, Acorn Squashes were expressed by higher content of several nutritional parameters compared to the typical Squash type - patisson. Thus, these Squashes could be an interesting vegetable for human nutrition.
Harry S Paris - One of the best experts on this subject based on the ideXlab platform.
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quality and storability of trellised greenhouse grown winter harvested new sweet Acorn Squash hybrids
Agronomy, 2020Co-Authors: Ayobami Adeeko, Fabiola Yudelevich, Ginat Raphael, Lior Avraham, Hana Alon, Merav Zaaroor Presman, Sharon Alkalaituvia, Harry S Paris, Elazar Fallik, Carmit ZivAbstract:Acorn Squash (Cucurbita pepo) is a familiar fruit vegetable in North America, appreciated for its attractive appearance, good flavor, nutritional content and long storage life. A breeding program in Israel has produced three new Acorn Squash hybrids of enhanced sweetness and flavor. Presently, we evaluated productivity, quality, and storability of these new cultivars in fall plantings. The plants were grown trellised, in an insect-proof greenhouse, for fruit production during the winter to meet consumer demand. The plants were highly productive and bore fruits of superb quality, but there was a high incidence of fungal rots during postharvest cold storage. Pre-treating the fruits with hot water brushing and rinsing before storage was found effective in reducing rot incidence of the fruits stored at 15 °C, but only for one cultivar. Storing the fruits at 10 °C with reduced humidity (Rh 70%) enabled a 3-month shelf life with significantly reduced fruit-rot incidence and minimal effect on fruit quality of all three cultivars. Storage at 20 °C with reduced humidity was suitable for a 1-month period. These protocols for prolonging storage life will help attain controlled, gradual year-round marketing of quality Acorn Squash at uniform, reasonable price levels for farmers and consumers, and could facilitate overseas export.
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genes for developmental fruit coloration of Acorn Squash
Journal of Heredity, 1997Co-Authors: Harry S ParisAbstract:Table Queen, an old cultivar of the Acorn group of Cucurbita pepo, has fruits that are light green when young that become dark green by intermediate age and remain dark green through maturity. In order to determine the genetic basis of its developmental fruit color, Table Queen was crossed with three accessions of known genotype, Vegetable Spaghetti (d/d I-1/l-1 I-2/I-2), Fordhook Zucchini (D/D L-1/L-1 L-2/L-2), and 85k-9-107-2(d/d I-1/I-1 L-2/L-2). The progenies were observed and scored for fruit coloration at three developmental stages: young [2-5 days past anthesis (dpa)], intermediate (15-18 dpa), and mature (40-44 dpa). The results indicate that Table Queen possesses genotype D/D I-1/I-1 L-2/L-2. All of the accessions crossed with Table Queen carry two recessive genes, herein designated mature orange-1 (mo-1) and mature orange-2 (mo-2). The combination of these two recessive genes results in complete loss of green fruit color prior to maturity, except in L-1/-L-2/--plants. Table Queen fruits retain their green color through maturity because this cultivar carries the dominant alleles Mo-1 and Mo-2, either of which acting alone results in green color retention. Genes D and mo-2 are linked, approximately 15 map units apart.
P S Ojiambo - One of the best experts on this subject based on the ideXlab platform.
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interactive effects of temperature and leaf wetness duration on sporangia germination and infection of cucurbit hosts by pseudoperonospora cubensis
Plant Disease, 2012Co-Authors: K N Neufeld, P S OjiamboAbstract:Abstract Outbreaks of cucurbit downy mildew caused by Pseudoperonospora cubensis are dependent on the weather but effects of temperature and leaf wetness duration on infection have not been studied for different cucurbits. To determine the effects of these two weather variables on sporangia germination and infection of cucurbit host types by P. cubensis, three host types; cucumber (‘Straight 8’), cantaloupe (‘Kermit’), and Acorn Squash (‘Table Queen’), were inoculated and exposed to leaf wetness durations of 2 to 24 h at six constant temperatures ranging from 5 to 30°C in growth-chamber experiments. Sporangia germination was assessed after each wetness period, and leaf area infected was assessed 5 and 7 days after inoculation. Germination of sporangia was highest on cantaloupe (16.5 to 85.7%) and lowest on Squash (10.7 to 68.9%), while disease severity was highest and lowest on cucumber and cantaloupe, respectively. Host type, temperature, wetness duration and their interactions significantly (P < 0.0001)...
Miroslav Šlosár - One of the best experts on this subject based on the ideXlab platform.
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quantitative and qualitative parameters in Acorn Squash cultivar in the conditions of the slovak republic
Potravinarstvo, 2018Co-Authors: Miroslav Šlosár, Ivana Mezeyová, Alžbeta Hegedűsová, Ondrej HegedűsAbstract:The species Cucurbita pepo includes several types of Squashes; in Slovak Republic, well-known and oftenly grown Squash types are patisson, zucchini, spaghetti Squash, oil pumpkin etc. Several interesting Squash types of Cucurbita pepo are grown abroad, including Acorn Squash which is well-known mainly in USA. The aim of this study was to evaluate the important quantitative (yield per hectare, average fruit weight) and qualitative (total carotenoids, ascorbic acid, antioxidant activity, total soluble solids) yield parameters of Acorn Squash fruits in comparison with patisson which is typical Squash type of Cucurbita pepo in Slovak Republic. The field trial was realised in Kosice-Saca in 2016. Within experiment, four cultivars of Acorn type pumpkin were tested (Thelma Sanders; Jet Set; Table Gold; Cream of The Crop). The patisson 'Orfeus' was used as a comparative cultivar for evaluation of individual parameters of Acorn type pumpkin cultivars. Matured pumpkin fruits were harvested on the 7th September 2016. From aspect of yield quantity, Acorn cultivars are appeared as very interesting Squash type with good yield potential for growing. The highest yield of Squash fruits was found in the cultivar 'Cream of The Crop' (17.8 t.ha-1). In mentioned Acorn cultivar, the yield was higher about 87.4% compared to the tested patisson cultivar 'Orfeus' (9.5 t.ha-1). On the contrary, the average weight of Squash fruits was reached in patisson cultivar 'Orfeus' (780.7 g). The qualitative parameters of fruits were expressively influenced by Squash cultivar. The content of total carotenoids, ascorbic acid and total soluble solids was markedly higher in all Acorn cultivars, compared to the patisson cultivar 'Orfeus'. The highest content of total carotenoids (26.74 mg.kg-1 fresh weight) and ascorbic acid (238.79 mg.kg-1 f. w.) was found in the Squash cultivar 'Table Gold'. The highest content of total soluble solids was determined in the cultivar 'Jet Set' (3.8 °Brix). On the contrary, the highest antioxidant activity (DPPH) was found in the patisson cultivar 'Orfeus' (10.80 %). On the basis of obtained results, it is possible to state that Acorn cultivars are very interesting Squash type with promising yield potential for possible growing in conditions of Slovak Republic. In addition, Acorn Squashes were expressed by higher content of several nutritional parameters compared to the typical Squash type - patisson. Thus, these Squashes could be an interesting vegetable for human nutrition.
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Quantitative and qualitative parameters in Acorn Squash cultivar in the conditions of the Slovak Republic
HACCP Consulting, 2018Co-Authors: Miroslav Šlosár, Ivana Mezeyová, Alžbeta Hegedűsová, Ondrej HegedűsAbstract:The species Cucurbita pepo includes several types of Squashes; in Slovak Republic, well-known and oftenly grown Squash types are patisson, zucchini, spaghetti Squash, oil pumpkin etc. Several interesting Squash types of Cucurbita pepo are grown abroad, including Acorn Squash which is well-known mainly in USA. The aim of this study was to evaluate the important quantitative (yield per hectare, average fruit weight) and qualitative (total carotenoids, ascorbic acid, antioxidant activity, total soluble solids) yield parameters of Acorn Squash fruits in comparison with patisson which is typical Squash type of Cucurbita pepo in Slovak Republic. The field trial was realised in Košice-Šaca in 2016. Within experiment, four cultivars of Acorn type pumpkin were tested (Thelma Sanders; Jet Set; Table Gold; Cream of The Crop). The patisson 'Orfeus' was used as a comparative cultivar for evaluation of individual parameters of Acorn type pumpkin cultivars. Matured pumpkin fruits were harvested on the 7th September 2016. From aspect of yield quantity, Acorn cultivars are appeared as very interesting Squash type with good yield potential for growing. The highest yield of Squash fruits was found in the cultivar 'Cream of The Crop' (17.8 t.ha-1). In mentioned Acorn cultivar, the yield was higher about 87.4% compared to the tested patisson cultivar 'Orfeus' (9.5 t.ha-1). On the contrary, the average weight of Squash fruits was reached in patisson cultivar 'Orfeus' (780.7 g). The qualitative parameters of fruits were expressively influenced by Squash cultivar. The content of total carotenoids, ascorbic acid and total soluble solids was markedly higher in all Acorn cultivars, compared to the patisson cultivar 'Orfeus'. The highest content of total carotenoids (26.74 mg.kg-1 fresh weight) and ascorbic acid (238.79 mg.kg-1 f. w.) was found in the Squash cultivar 'Table Gold'. The highest content of total soluble solids was determined in the cultivar 'Jet Set' (3.8 °Brix). On the contrary, the highest antioxidant activity (DPPH) was found in the patisson cultivar 'Orfeus' (10.80 %). On the basis of obtained results, it is possible to state that Acorn cultivars are very interesting Squash type with promising yield potential for possible growing in conditions of Slovak Republic. In addition, Acorn Squashes were expressed by higher content of several nutritional parameters compared to the typical Squash type - patisson. Thus, these Squashes could be an interesting vegetable for human nutrition.
Michael Mazourek - One of the best experts on this subject based on the ideXlab platform.
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comparative analysis of cucurbita pepo metabolism throughout fruit development in Acorn Squash and oilseed pumpkin
Horticulture research, 2016Co-Authors: Lindsay E Wyatt, Susan R Strickler, Lukas A Mueller, Michael MazourekAbstract:Both the fruit mesocarp and the seeds of winter Squash can be used for consumption, although the focus of breeding efforts varies by cultivar. Cultivars bred for fruit consumption are selected for fruit mesocarp quality traits such as carotenoid content, percent dry matter, and percent soluble solids, while these traits are essentially ignored in oilseed pumpkins. To compare fruit development in these two types of Squash, we sequenced the fruit transcriptome of two cultivars bred for different purposes: an Acorn Squash, 'Sweet REBA', and an oilseed pumpkin, 'Lady Godiva'. Putative metabolic pathways were developed for carotenoid, starch, and sucrose synthesis in winter Squash fruit and Squash homologs were identified for each of the structural genes in the pathways. Gene expression, especially of known rate-limiting and branch point genes, corresponded with metabolite accumulation both across development and between the two cultivars. Thus, developmental regulation of metabolite genes is an important factor in winter Squash fruit quality.
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an Acorn Squash cucurbita pepo ssp ovifera fruit and seed transcriptome as a resource for the study of fruit traits in cucurbita
Horticulture research, 2015Co-Authors: Lindsay E Wyatt, Susan R Strickler, Lukas A Mueller, Michael MazourekAbstract:Acorn Squash (Cucurbita pepo) is an iconic fall vegetable in the United States, known for its unique fruit shape and also prized for its culinary properties. Little is known about the metabolism that underlies the development of fruit quality attributes such as color, sweetness, texture and nutritional qualities in Acorn Squash, or any other winter Squash grown worldwide. To provide insight into winter Squash fruit and seed development and add to the genomic resources in the Cucurbita genus, RNA sequencing was used to generate an Acorn Squash fruit and seed transcriptome from the cultivar Sweet REBA at critical points throughout fruit development. 141 838 600 high-quality paired-end Illumina reads were assembled into 55 949 unigenes. 85% of unigenes with predicted open reading frames had homology with previously identified genes and over 62% could be functionally annotated. Comparison with the watermelon and cucumber genomes provided confirmation that the unigenes are full-length and comprehensive, covering an average of 90% of the coding sequence of their homologs and 72% of the cucumber and watermelon exomes. Key candidate genes associated with carotenoid and carbohydrate metabolism were identified toward a resource for winter Squash fruit quality trait dissection. This transcriptome represents a major advance in C. pepo genomics, providing significant new sequence information and revealing the repertoire of genes expressed throughout winter Squash fruit and seed development. Future studies on the genetic basis of fruit quality and future breeding efforts will be enhanced by tools and insights developed from this resource.
