Toward Breeding for Resistance to Fusarium Tuber Rot in Caladium: Inoculation Technique and Sources of Resistance

Goktepe, Fahrettin; Seijo, T. E.; Deng, Zhanao; Harbaugh, Brent K.; Peres, Natália A.; McGovern, Robert J.

doi:10.21273/hortsci.42.5.1135

Cited by 18 publications

(18 citation statements)

References 9 publications

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“…Saa. (Goktepe et al, 2007), pythium root rot caused by Pythium myriotylum Drechs. (Deng et al, 2005a), and root-knot nematodes [Meloidogyne incognita (Kofoid and White) Chitwood] (Dover et al, 2005;McSorley et al, 2004).…”

Section: Methodsmentioning

confidence: 99%

Inheritance of Leaf Spots and Their Genetic Relationships with Leaf Shape and Vein Color in Caladium

Deng¹,

Goktepe²,

Harbaugh³

2008

J. Amer. Soc. Hort. Sci.

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The ornamental value of caladium (Caladium ×hortulanum Birdsey) depends to a large extent on its foliar characteristics. Efficient genetic improvement of caladium foliar characteristics requires a good understanding of the inheritance of these traits, including leaf shape, color, and spots. This study was conducted to determine the inheritance of leaf spots in caladium and to understand their relationships with leaf shape and main vein color. Eighteen controlled crosses were made among eight commercial cultivars expressing red or no leaf spots, and progeny of these crosses were observed for segregation of leaf spots as well as leaf shape and vein color. A single locus with two alleles is shown to be responsible for the presence or absence of leaf spots in caladium, with the presence allele (S) dominant over the absence allele (s). The major spotted commercial cultivar Gingerland is heterozygous for this trait. Leaf spots are inherited independently from leaf shape, but they are closely linked with the color of the main leaf veins. The recombination frequencies between the leaf spot locus and the main vein color locus ranged from 0.0% to 8.9% with the crosses or the parental cultivars used, with an average of 4.4%. Leaf spots and vein colors represent the first linkage group of ornamental traits in caladium and possibly in other ornamental aroids. The knowledge gained in this study will be valuable when it comes to determine what crosses to make for development of new cultivars. It may be also useful to those interested in determining the inheritance of similar traits in other ornamental plants, including other ornamental aroids such as dieffenbachia (Dieffenbachia Schott).

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Section: Methodsmentioning

confidence: 99%

Inheritance of Leaf Spots and Their Genetic Relationships with Leaf Shape and Vein Color in Caladium

Deng¹,

Goktepe²,

Harbaugh³

2008

J. Amer. Soc. Hort. Sci.

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“…Preliminary results (data not shown) showed that this cultivar was susceptible to both diseases. This was expected as both parents of 'Sea Foam Pink' ('Carolyn Whorton' and 'Miss Muffet') were susceptible or highly susceptible to Fusarium tuber rot and Pythium root rot (Deng et al, 2005a(Deng et al, , 2005bGoktepe et al, 2007).…”

Section: Possible Susceptibility To Pythium Root Rot and Fusarium Tubmentioning

confidence: 85%

“…They are caused by Pythium myriotylum and Fusarium solani, respectively. The majority of caladium cultivars in commercial production are susceptible to these diseases (Deng et al, 2005a(Deng et al, , 2005bGoktepe et al, 2007). 'Sea Foam Pink' was tested for susceptibility to Pythium root rot and Fusarium tuber rot in 2014.…”

Section: Possible Susceptibility To Pythium Root Rot and Fusarium Tubmentioning

confidence: 99%

‘Sea Foam Pink’ Caladium

Deng¹,

Peres²

2019

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Additional index words. breeding, cultivar, landscape plant, ornamental aroid, pot plant Caladiums (Caladium •hortulanum Birdsey, Araceae Juss.) are often grown in containers or planted in the landscape as accent and border plants (Deng, 2018; Evans et al., 1992). They are valued for their variableshaped, bright foliage. The majority of commercial caladium plants sold at retail are produced by forcing tubers in containers. Florida field growers produce essentially all the caladium tubers used in the United States and some 40 countries in the world for the production of pot plants and direct planting in the landscapes. Commercial caladium culti

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“…x The resistance levels of these commercial cultivars were reported by Goktepe et al (2007). NS Not significantly different at P < 0.05.…”

Section: Cultivarmentioning

confidence: 99%

“…Resistance to Fusarium Tuber Rrot 'Icicle' was compared with selected caladium cultivars regarding its susceptibility to Fusarium tuber rot. Caladium tubers of 'Icicle' and commercial cultivars Candidum, Carolyn Whorton, Freida Hemple, Red Flash, and White Christmas were surface-sterilized, cut in half, and inoculated with Fusarium solani by inserting two pieces of Fusariumcolonized carnation leaf segments (Goktepe et al, 2007). Inoculated tuber halves were placed inside egg cartons and incubated at 18°C under 100% relative humidity.…”

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confidence: 99%

‘Icicle’: A White Lance-leaved Caladium Cultivar for Containers and Shady Landscapes

Deng¹,

Peres²

2018

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Caladiums (Caladium •hortulanum Birdsey, Araceae Juss.) can be grown in containers or planted in the landscape as accent and border plants (Evans et al., 1992). They are valued for their long-lasting colorful foliage. Most of the commercially available caladium plants are forced from tubers. Florida growers supply essentially all the caladium tubers used in the United States and some 40 countries in the world for the production of pot plants and direct planting in the landscapes. New cultivar introductions are important not only to the Florida caladium industry but also to the greenhouse, nursery, and landscape industries. Commercial caladium cultivars are often grouped into eight categories based on their leaf type and impact color [fancy white, red, pink, and novelty, and lance (or strap) white, red, pink, and novelty] (Bell et al., 1998). Recent surveys of the Florida caladium industry indicated that 51 caladium cultivars were planted in 2013 with two or more acres planted per cultivar (Deng et al., 2008; Z. Deng, unpublished data). Among the white lance-leaved cultivar groups are 'Florida White Ruffles' and 'White Wing'. 'Florida White Ruffles' was released by the University of Florida/Institute of Food and Agricultural Sciences caladium breeding program in 2001. It was primarily bred for forcing in small containers and hanging baskets (Baldwin et al., 2002). 'White Wing' has been in commercial production for many years and was ranked 3rd among all lanceleaved cultivars in the acreage planted in 2013 (14.3 acres). 'Icicle' is a new addition to the white lance leaf cultivar group, and, here, we report its origin, tuber yield potential, plant performance in containers and landscapes, and resistance to Fusarium tuber rot, a major fungal disease of caladium that has caused substantial economic losses to the Florida caladium industry (Goktepe et al., 2007).

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Toward Breeding for Resistance to Fusarium Tuber Rot in Caladium: Inoculation Technique and Sources of Resistance

Cited by 18 publications

References 9 publications

Inheritance of Leaf Spots and Their Genetic Relationships with Leaf Shape and Vein Color in Caladium

Inheritance of Leaf Spots and Their Genetic Relationships with Leaf Shape and Vein Color in Caladium

‘Sea Foam Pink’ Caladium

‘Icicle’: A White Lance-leaved Caladium Cultivar for Containers and Shady Landscapes

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