Watsonias as container plants: using paclobutrazol for flowering and height control

Thompson, Dave I.; Anderson, Neil O.; Staden, J. Van; Bornman, Chris H.

doi:10.1016/s0254-6299(15)30115-0

Cited by 8 publications

(3 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Paclobutrazol has demonstrated to provide height control in a large number of floriculture crops, including several flowering potted plants (Faust et al, 2001;Bañón et al, 2002;Meijon et al, 2009;Currey and Lopez, 2010;Newton and Runkle, 2010;Larcher et al, 2011;Wahyuni et al, 2011). In addition, PBZ has been reported to increase plant ornamental value by enhancing flowering (Mishra et al, 2005;Thompson et al, 2005) and foliage colour (Bañón et al, 2001(Bañón et al, , 2002(Bañón et al, , 2003Mansuroglu et al, 2009;Meijon et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Effect of paclobutrazol in potted plants of four cultivars of Dianthus barbatus × chinensis

Lenzi¹,

Nannicini²,

Mazzeo³

et al. 2015

Europ.J.Hort.Sci.

View full text Add to dashboard Cite

What is already known on this subject?• It was previously demonstrated that PBZ is effective in controlling plant height and enhancing colour of a large number of floriculture crops. However, different species have their own needs as to way of application (spray or substrate drench) and appropriate dosage.What are the new findings?• The study showed that PBZ as a substrate drench reduces plant height and enhances foliage colour in potted Dianthus barbatus × chinensis, a species at present cultivated as a cut flower. Appropriate dosage ranges from 0.5 to 1 mg a.i. per pot depending on pot size, cultivar and season.What is the expected impact on horticulture?• The ornamental plant market is characterized by being eager for novelties. Therefore, the use of Dianthus barbatus × chinensis as a new flowering pot crop, which is made possible by height control, may represent an opportunity for growers.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of paclobutrazol in potted plants of four cultivars of Dianthus barbatus × chinensis

Lenzi¹,

Nannicini²,

Mazzeo³

et al. 2015

Europ.J.Hort.Sci.

View full text Add to dashboard Cite

show abstract

“…There has been little commercial development in the genus with the exception of a few cultivars (viz. Watsonia borbonica 'Dazzler', 'Flamboyant', and 'Snow Queen') (Duncan, 2002) or induced (Thompson et al, 2005) dwarf phenotypes as container subjects. The aim of this study, as a means of addressing the delayed commercialization of the genus by releasing novel horticultural traits, was to establish the amenability of in vitro-germinated seeds to colchicine-induced polyploidy.…”

mentioning

confidence: 99%

Colchicine-induced Somatic Polyploids from In Vitro-germinated Seeds of South African Watsonia Species

Thompson¹,

Anderson²,

Staden³

2010

horts

View full text Add to dashboard Cite

Polyploidy represents a useful tool for increasing marketability of floriculture crops. The efficacy of 250 μM colchicine [0.01% (w/v)] as a means of inducing polyploidy in six South African Watsonia species (W. borbonica subsp. ardernei, W. humilis, W. laccata, W. lepida, W. pulchra, and W. vanderspuyiae), as determined through high-resolution flow cytometry, is reported. Exposure to colchicine during imbibition and as 24-, 48-, or 72-h pulse treatments for in vitro-germinated seeds resulted in seedlings with increased ploidy, reaching a maximum of 60% induction after the 72-h pulse treatment. The greatest proportions of induced individuals from both the pre- and post-germination exposure treatments were of mixed ploidy. These mixoploids were induced in five species. Non-chimeric tetra- and octaploids were produced in low frequencies only for W. vanderspuyiae during radicle-pulse exposure of 24 and 48 h. Increasing colchicine exposure at radicle emergence manifested as aberrant phenotypic expression and was typified by a reduction in leaf length and rooting capacity in vitro coupled with overall slowed growth. In vitro regeneration and multiplication is easily achievable for the genus and should allow for the capture and refinement of desirable polyploid tissues.

show abstract

“…Four species (W. gladioloides Schlechter, W. laccata, W. lepida, and W. vanderspuyiae L. Bolus) have been propagated in tissue culture (Ascough et al, 2007(Ascough et al, , 2008 and chemical dwarfing techniques have been successful on W. tabularis Mathews & L. Bolus and Watsonia 'Shrimp pink' (Thompson et al, 2005). However, to maintain a dwarf stature, corms need to be retreated each year.…”

mentioning

confidence: 99%

Effectiveness of Colchicine and Oryzalin at Inducing Polyploidy in Watsonia lepida N.E. Brown

Ascough¹,

Staden²,

Erwin³

2008

horts

View full text Add to dashboard Cite

Genetic modification and manipulation offers the possibility of introducing novel traits into existing plants, thereby increasing marketability. Polyploid induction has in the past produced plants that are more compact and have larger flowers, leaves, and fruit, making them more desirable to consumers. The effect of pulse treatments (0, 24, 48, and 72 h) of colchicine (25, 50, 125, and 250 μm) or oryzalin (30, 60, 90, and 120 μm) on in vitro-grown Watsonia lepida N.E. Brown shoots was investigated. Explant survival was higher and more consistent with oryzalin treatment compared with treatment with colchicine. More mixoploids than tetraploids were produced with both compounds. The optimum treatment for producing tetraploids was 120 μm oryzalin for 24 h. Of the 30% explants that survived this treatment, 33% were found to be stable tetraploids.

show abstract

Watsonias as container plants: using paclobutrazol for flowering and height control

Cited by 8 publications

References 40 publications

Effect of paclobutrazol in potted plants of four cultivars of Dianthus barbatus × chinensis

Effect of paclobutrazol in potted plants of four cultivars of Dianthus barbatus × chinensis

Colchicine-induced Somatic Polyploids from In Vitro-germinated Seeds of South African Watsonia Species

Effectiveness of Colchicine and Oryzalin at Inducing Polyploidy in Watsonia lepida N.E. Brown

Contact Info

Product

Resources

About