Ornamental bedding plant industry and plug production.

Hamrick, Debbie; McDonald, Miller B.; Kwong, F. Y.

doi:10.1079/9780851999067.0027

Cited by 3 publications

(3 citation statements)

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“…Germination of P. pilosa seeds is erratic (Specialty Perennials, 2006), and poor seedling emergence in its natural habitat has been reported (Christiansen, 1967). The inconsistent germination of many perennial species has long discouraged growers from starting plants from seed; however, several companies have recently begun to focus on improving germination of perennial species through seed treatments (Hamrick, 2005).…”

mentioning

confidence: 99%

Germination of Phlox pilosa L. Seeds Is Improved by Gibberellic Acid and Light but Not Stratification, Potassium Nitrate, or Surface Disinfestation

Madeiras¹,

Boyle²,

Autio³

2007

horts

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The effects of warm stratification and cold stratification, gibberellin-3 (GA3) concentration, potassium nitrate concentration, light, and duration of surface sterilization on the germination of downy phlox (Phlox pilosa L.) seeds were studied. Germination after 21 days (G21), days to 50% germination (T50), and number of days between 10% and 90% final germination (T90–T10) were calculated for each treatment. Total germination percentage was most significantly improved by cold stratification at 5 ± 2 °C for 10 weeks after warm stratification at 20 °C for 2 weeks; however, a substantial amount of germination occurred during the prestratification period, thus resulting in a crop with poor uniformity. A total of 10 mg·L−1 GA3 significantly improved the G21, T50, and T90–T10 values. Although GA3 concentration and duration of cold stratification period interacted significantly when the two were combined, the additive effects of GA3 and cold stratification did not significantly improve G21 values over those obtained with GA3 alone nor were T50 values improved over those obtained with cold stratification alone. Potassium nitrate did not influence the T50 and T90–T10 values and improved G21 only slightly. Light was found to be necessary for germination. Surface sterilization with 10% bleach decreased the growth of fungi on seeds but had no significant effect on the germination responses of P. pilosa seeds. Application of GA3 at 10 mg·L−1 is a promising method for improving seed germination in perennial Phlox species.

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mentioning

confidence: 99%

Germination of Phlox pilosa L. Seeds Is Improved by Gibberellic Acid and Light but Not Stratification, Potassium Nitrate, or Surface Disinfestation

Madeiras¹,

Boyle²,

Autio³

2007

horts

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“…Most commercial used cut flower gerberas and some garden and pot flower gerbera are primarily vegetatively propagated from tissue culture (Hamrick 2005). Gerbera can be easily multiplied by a division of rhizomes with buds and attached roots, yet less than 10-12 progeny plants might be produced in this way for each mature plant per year and cut pieces are easily infected (Rogers and Tjia 1990).…”

Section: Propagation Of Commercial Gerberamentioning

confidence: 99%

“…Gerbera cultivars can also be produced by sexual propagation (Kanwar and Kumar 2008). Several ornamental (gerbera specific) breeding companies developed female and male parental inbred lines to produce F1 hybrid seeds for potted and garden used gerbera because of economic and phytopathogenic reasons (Hamrick 2005;Reimann-Philipp 1983). More importantly, the F1 hybrid seeds possess so-called 'hybrid vigor', uniformity and high yield, and it could be used against illegal reproduction since the hybrids segregate and produce variable offspring (Horn 2002;Reimann-Philipp 1983).…”

Section: Propagation Of Commercial Gerberamentioning

confidence: 99%