Calla History and Culture

Kuehny, Jeff S.

doi:10.21273/horttech.10.2.267

Cited by 37 publications

(20 citation statements)

References 25 publications

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“…In callas cultivation the number and quality of flowers, and precisely speaking inflorescences on long petioles, subtended by single showy spathes, have to be dependent on sources activity and assimilate transport. Thus, this is important for commercial practice determining the profitability (Kuehny 2000). An important role in flowering regulation and yields of Zantedeschia is played by gibberellins, recommended and used in commercial grown (Corr and Widmer 1987;Funnell et al 1988;Dennis et al 1994;Janowska and Krause 2001).…”

Section: Discussionmentioning

confidence: 99%

Changes in carbohydrate contents of Zantedeschia leaves under gibberellin-stimulated flowering

Kozłowska¹,

Rybus-Zając²,

Stachowiak³

et al. 2006

Acta Physiol Plant

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The effect of gibberellic acid (GA 3 ) on the carbohydrate accumulation in relation to vegetative growth of Zantedeschia 'Black Magic' plants undergoing transition to flowering was investigated. In response to GA treatment the carbohydrate level increased independently of earlier stimulation of shoot emergence. Under vegetative growth stage the content of reducing sugars of leaf blades was 2.5-fold higher than in control plants, and suggests the stimulation of photosynthetic activity. The changes observed during the flowering, in principle noted in petiole tissues, support the GA-effect on assimilate transport to the sink organs. Moreover, the high level of non-structural carbohydrates in petiole tissues, in particular reducing sugars, can be an effect of photosynthetic activity of these organs and/or essential for osmoregulation and high turgor pressure. The results indicate that apart from the influence on the shoot emergence, the GAs may stimulate the photosynthetic activity from the beginning of shoot growth and are thus responsible for the enhancement of callas flower yield.

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Section: Discussionmentioning

confidence: 99%

Changes in carbohydrate contents of Zantedeschia leaves under gibberellin-stimulated flowering

Kozłowska¹,

Rybus-Zając²,

Stachowiak³

et al. 2006

Acta Physiol Plant

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“…Most of Zantedeschia hybrids with colored flowers are developed from crosses within section Aestivae (Singh et al, 1996). Calla may be grown as outdoor garden plants, commercial cut flowers and more recently as flowering potted plants (Kuehny, 2000).…”

Section: Introductionmentioning

confidence: 99%

Virulence Variation in 20 Isolates of Erwinia Carotovora Subsp. Carotovora on Zantedeschia Cultivars in Korea

Cho¹,

Lim²,

Yun³

et al. 2005

Acta Hortic.

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Bacterial soft rot caused by Erwinia carotovora subsp. carotovora is a major disease in Zantedeschia spp. Chemicals or modified cultivation methods only provide partial control of this disease. So highly resistant cultivars are needed to produce high quality calla flowers. Experiments were conducted to screen for Erwinia resistance in Zantedeschia spp. by a leaf disk test. To determine variation for aggressiveness, 20 Erwinia isolates collected from sites at Jeonju, Pyeongchang, and Suwon were inoculated onto five Zantedeschia cultivars: including 'Wedding March' as a resistant genotype, 'Little Suzy' as a moderately resistant genotype, and 'Chianti' as a susceptible genotype. Ecc NHRI-3 and Ecc NHRI-6 were the most virulent isolates among the 20 isolates of Erwinia carotovora subsp. carotovora tested. Within 25 Zantedeschia genotypes, including Z. rehmannii and Z. albomaculata, variation of Erwinia resistance ranged from almost completely resistant to extremely susceptible. 'Wedding March' was the most resistant, while 'Galaxy' was the most susceptible.

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“…Infected plants have reduced vigor and distorted new growth (Hoshi et al, 2013). Various types of crown rot and soft rot are the most common problem for callas, with bacterial soft rot being the most important (Kuehny, 2000). Root rot and crown rot are also major problems for lisianthus, and there are no known resistant cultivars (Harbaugh and McGovern, 2000).…”

Section: Resultsmentioning

confidence: 99%

North American Specialty Cut Flower Production and Postharvest Survey

Loyola¹,

Dole²,

Dunning³

2019

hortte

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In the United States and Canada, there has been an increase in the demand for local specialty cut flowers and a corresponding increase in production. To assess the needs of the industry, we electronically surveyed 1098 cut flower producers and handlers in the United States and Canada regarding their current cut flower production and postharvest problems, and customer issues. We received a total of 210 responses, resulting in a 19% response rate. The results showed that the main production problem was insect management; crop timing was the second most important problem and disease management was the third. Crop timing encompasses a range of related issues such as determining the correct harvest stage, harvest windows that are too short, flowering all at once, or lack of control when the crop is ready to harvest. The main postharvest problems were temperature management, hydration, and flower food management. Timing and stem length were the two most mentioned species-specific production issues, with each one listed by 10% or more of the respondents for eight of the total 31 species. Regarding on-farm postharvest handling, hydration and vase life were the two most mentioned issues; they were reported for five and three species, respectively. For postharvest during storage and transport, damage and hydration were the most common issues; these were listed for three species each. The most commonly mentioned customer complaints were vase life and shattering, which were reported for six and two species, respectively. These results will allow researchers and businesses to focus on the major cut flower production and postharvest issues and on crops that are most in need of improvement in North America.

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Calla History and Culture

Cited by 37 publications

References 25 publications

Changes in carbohydrate contents of Zantedeschia leaves under gibberellin-stimulated flowering

Changes in carbohydrate contents of Zantedeschia leaves under gibberellin-stimulated flowering

Virulence Variation in 20 Isolates of Erwinia Carotovora Subsp. Carotovora on Zantedeschia Cultivars in Korea

North American Specialty Cut Flower Production and Postharvest Survey

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