Evaluation of Pumpkin Cultivars for Powdery and Downy Mildew Resistance, Virus Tolerance, and Yield

Keinath, Anthony P.; DuBose, Virginia B.

doi:10.21273/hortsci.35.2.281

Cited by 12 publications

(5 citation statements)

References 4 publications

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“…In general, the pumpkin yields we obtained under eastern North Carolina conditions were greater than the yields of the same or similar cultivars ('Howden') grown under southeastern coastal plain conditions (Keinath and DuBose, 2000;Wien et al, 1998;2002). Our studies suggest that implementing thorough cultural practices together with selecting regionally adapted cultivars can lead to productive and potentially profi table pumpkin crops for growers under these or similar southeastern U.S. conditions.…”

Section: Discussionmentioning

confidence: 57%

“…While observations on DM and PM prevalence were only conducted in 1 year of our study, the results suggest that pumpkin cultivars vary in susceptibility to these diseases, as was found by Keinath and DuBose (2000). Therefore, pumpkin production under high humidity conditions like the southeastern U.S. requires a vigorous fungicide spray program and/or foliar disease-resistant cultivar selection.…”

Section: Variety Trialsmentioning

confidence: 54%

“…While pumpkin fl owering and fruit set problems also may occur in northern growing regions, Stapleton et al (2000) suggested that climatic conditions may be secondary to physiological factors. In South Carolina, Keinath and DuBose (2000) concluded that none of the pumpkin cultivars they evaluated were well-adapted to the humid growing conditions of the southeastern U.S. coastal plain. Downy mildew (Pseudoperonospora cubensis), powdery mildew (Sphaerotheca fuliginea), papaya ringspot virus (PRSV), watermelon mosaic virus (WMV), and zucchini yellow mosaic virus (ZYMV) are also known to reduce yields of sensitive squash and pumpkin cultivars (Bost et al, 1991;Keinath and DeBose, 2000;Schultheis and Walters, 1998;Shoemaker, 1994).…”

mentioning

confidence: 99%

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Adaptation and Market Potential of Jack o' lantern and Miniature Pumpkin Cultivars in Eastern North Carolina

Stanghellini¹,

Schultheis²,

Holmes³

2003

horttech

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In 1998 and 1999, a total of 27 large-fruited and 15 miniature-fruited pumpkin (Cucurbita pepo) cultivars were evaluated for adaptation to eastern North Carolina grow- ing conditions. Test categories were yield (fruit number and weight); fruit characteristics (shape, rind and stem attributes); and susceptibility to edema (wart-like growths on fruit exterior), foliar diseases, preharvest and postharvest fruit decay, and viruses. Yields of large pumpkins ranged from over 3,200 fruit/acre (7,907 fruit/ha) for `SVT 4613367', `Autumn Gold', and `Gold Standard' to less than 1,000 fruit/acre (2,471 fruit/ha) for `Gold Rush' and `Progold 200'. For miniature pumpkins, over 33,000 fruit/acre (81,542 fruit/ha) were produced by `Touch of Autumn', `Lil' Pump- ke-mon', and `HMX 5682', whereas `Mystic' and `Progold 100' produced less than 7,000 fruit/acre (17,297 fruit/ha). `Gold Rush', `Howden', and `Progold 510' (large), and `EXT 4612297', `Lil' Goblin', and `Lil' Ironsides' (miniature) appeared the most susceptible to foliar diseases. Preharvest fruit decay ranged from 0% for `Howden' and `EXT 4612297' to over 20% for `Lil' Goblin', `Jumping Jack', `Peek-A-Boo', and `Tom Fox'. Virus incidence on fruit and foliage was low on virus-resistant cultivars ('SVT 4613367' and `EXT 4612297'), and ranged from 4% to 74% for nontransgenic cultivars. Virus incidence and/or severity on foliage and fruit were not related. `Early Autumn' (large) and `Touch of Autumn' (miniature) were the most prone to edema. `Aspen' and `Magic Lantern' (large) and `Baby Pam', `Lil' Goblin', and `Spooktacular' (miniature) were the most susceptible to postharvest fruit decay. Fruit characteristics are discussed in relation to marketability and possible consumer appeal to pumpkins.

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Section: Discussionmentioning

confidence: 57%

Section: Variety Trialsmentioning

confidence: 54%

mentioning

confidence: 99%

See 1 more Smart Citation

Adaptation and Market Potential of Jack o' lantern and Miniature Pumpkin Cultivars in Eastern North Carolina

Stanghellini¹,

Schultheis²,

Holmes³

2003

horttech

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“…Many investigators studied the vegetative and yield variations traits among cucurbit species (Doijode et al, 1982;Rana et al, 1985;Doijode and Sulladmath, 1986;Mondal et al, 1989;Bost et al, 1991;Swamy and Dutta, 1991;Prasad and Singh, 1992;Damarany et al, 1995;Olson et al, 1995;Mohanty and Mishra, 1999;Vallejo et al, 1999 a&b;Keinath and DuBose, 2000;Mohanty, 2000;Alsadon et al, 2002;White, 2002 andMostafa, 2006).…”

Section: Introductionmentioning

confidence: 99%

SCREENING SOME LOCAL AND INTRODUCED PUMPKIN (Cucurbita moschata) GENOTYPES FOR EARLINESS AND FRUIT YIELD TRAITS

Obiadalla-Ali

El-Sawah

Helaly

2009

Journal of Plant Production

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Fifteen genotypes of pumpkin (Cucurbita moschata Duchesne) were screened for earliness and fruit yield at the Experimental Farm, Faculty of Agriculture, Sohag University during the two successive seasons; 2007 and 2008. There were significant differences among genotypes for all studied characters. Etamp cultivar had the longest vine length and leaves number per plant, while Butternut cultivar had the shortest vine length in both seasons. Butternut cultivar gave the highest value of sex ratio, while the lowest one was recorded by El-Mansoura cv. Butternut cultivar was the earliest in both male and female flowers, while genotype Khartoum (Sudan) accession was the latest in male and female flowers in both seasons. Etamp cultivar bore the first male and female flowers on the highest node number, while Butternut cultivar produced the 1 st male and female flowers on the lowest node number in both seasons. Pepa (Beni Suef) accession had the highest number of nodes between the 1 st male and 1 st female flowers while; Butternut cultivar had the lowest number of nodes between the 1 st male and the 1 st female flowers in both seasons. Desuk (Kafr El-Sheikh) accession gave the largest number of days between the 1 st male and the 1 st female flowers anthesis, while Butternut cultivar gave the lowest number of days between the 1 st male and the 1 st female flowers anthesis. Butternut cultivar gave the highest sex ratio, while El-Mansoura accession gave the lowest sex ratio in both seasons. Etamp cultivar fruits were longest, while those of accession Omdurman (Sudan) were shortest in both seasons. Etamp cultivar was greatest in fruit diameter, while Butternut accession was smallest in fruit diameter in both seasons. Etamp cultivar was heaviest fruit weight, while Butternut cultivar was lowest in fruit weight in both seasons. Etamp cultivar gave the highest value for flesh thickness while, Butternut cultivar showed the lowest value for this character in both seasons. Etamp cultivar exceeded all other genotypes in total fruit yield, while Butternut cultivar produced the lowest fruit yield in both seasons. Butternut cultivar gave the highest value for total soluble solids%, while Bardis (Sohag) accession showed the lowest value for this character, in both seasons. Thus, the results of this study could be useful in breeding programs for improving local pumpkin genotypes under Upper Egypt conditions.

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“…However, resistance to cucurbit PM has been bred into pumpkin through interspecific hybridization using closely related wild okeechobee gourd (Cucurbita okeechobeensis) and cultivated squash (Cucurbita moschata) species (Cohen et al, 2003). Cucurbit PM-resistant pumpkin varieties were first commercialized in the late 1990s (Keinath and DuBose, 2000). Resistance to cucurbit PM is believed to be conferred by a single incompletely dominant gene, though several recessive resistance genes in melons have also been characterized (Cohen et al, 2003;Jahn et al, 2002).…”

mentioning

confidence: 99%

Impact of Fungicide Program and Powdery Mildew Resistance in Three Varieties of Pumpkin

Coolong

Seebold

2011

hortte

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The effects of fungicide program and varietal resistance on the development of cucurbit powdery mildew [PM (Podosphaera xanthii)] in pumpkin (Cucurbita pepo) were tested in 2009 and 2010 in Lexington, KY. Three fungicide programs consisted of a no-fungicide control, low input (chlorothalonil), and high input (chlorothalonil alternated with myclobutanil) were applied to three varieties of pumpkin with different levels of cucurbit PM resistance. Varieties tested were Howden, Aladdin, and Camaro, which had no, moderate, and high levels of cucurbit PM resistance, respectively. There were no significant variety by fungicide program interactions for yield, number fruit per acre, and average fruit weight in both years. In 2009 and 2010, variety significantly affected yield. Yield increases corresponded to the level of cucurbit PM resistance. The high-resistance variety, Camaro, had the greatest yields in both years, while Howden, with no PM resistance, had the lowest yields. In 2010, yield significantly increased with the intensity of fungicide program. With the exception of cull percentage in 2009, there were no fungicide program by variety interactions for yield parameters. In both years, PM disease severity, characterized by the area under the disease progress curve (AUDPC), was lowest on ‘Camaro’ and highest on ‘Howden’. In 2009, unsprayed ‘Camaro’ had similar AUDPC values as ‘Aladdin’ and ‘Howden’ treated with low- or high-input fungicide programs. In 2010, unsprayed ‘Camaro’ had less disease than ‘Aladdin’ or ‘Howden’ that had received the high-intensity fungicide program. These results suggest that yields can be maintained with a minimal fungicide program when using a variety with high cucurbit PM resistant in some environments. A high-input fungicide program may be necessary to maintain yields of varieties with low cucurbit PM resistance.

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Evaluation of Pumpkin Cultivars for Powdery and Downy Mildew Resistance, Virus Tolerance, and Yield

Cited by 12 publications

References 4 publications

Adaptation and Market Potential of Jack o' lantern and Miniature Pumpkin Cultivars in Eastern North Carolina

Adaptation and Market Potential of Jack o' lantern and Miniature Pumpkin Cultivars in Eastern North Carolina

SCREENING SOME LOCAL AND INTRODUCED PUMPKIN (Cucurbita moschata) GENOTYPES FOR EARLINESS AND FRUIT YIELD TRAITS

Impact of Fungicide Program and Powdery Mildew Resistance in Three Varieties of Pumpkin

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