Details
| Original language | English |
|---|---|
| Pages (from-to) | 107-110 |
| Number of pages | 4 |
| Journal | Postharvest biology and technology |
| Volume | 63 |
| Issue number | 1 |
| Early online date | 12 Oct 2011 |
| Publication status | Published - Jan 2012 |
Abstract
Pelargonium (Pelargonium x hortorum) is grown as potted or bedding plants for their colourful, showy flowers and scented foliage. Absence of senescence symptoms in the leaves of Pelargonium cuttings, their capacity to initiate roots and continued growth of initiated roots is an important quality attribute. The effects of postharvest treatments with meta-topolin (mT) and thidiazuron (TDZ) to 'Katinka' Pelargonium cuttings were investigated. Leaves treated with mT or TDZ for 5 d had higher leaf chlorophyll contents than untreated controls. Exposing cuttings to mT had no effect on the rooting proportion (%) and average root diameter. Similarly, 0.05 mM. mT had no effect on number of roots per cutting. However, mT slightly reduced root length, root surface area and total volume of the roots. TDZ severely inhibited adventitious root formation, thus it reduced all the root parameters investigated. In conclusion, mT is very active in retarding leaf senescence, and combined with the observed ease of rooting of cuttings after mT treatment, this treatment is a suitable alternative to TDZ in delaying the onset of leaf yellowing in ornamental crops.
Keywords
- Chlorophyll, Leaf senescence, Meta-topolin, Pelargonium zonale, Rooting, Thidiazuron
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Food Science
- Agricultural and Biological Sciences(all)
- Agronomy and Crop Science
- Agricultural and Biological Sciences(all)
- Horticulture
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In: Postharvest biology and technology, Vol. 63, No. 1, 01.2012, p. 107-110.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Effect of meta-topolin on leaf senescence and rooting in Pelargonium×hortorum cuttings
AU - Mutui, Theophilus M.
AU - Mibus, Heiko
AU - Serek, Margrethe
N1 - Funding Information: This research was financially supported by the German Academic Exchange Service (DAAD) , grant no. A/09/07416 . We would also wish to thank Selecta Klemm GmbH & Co. KG, Stuttgart, Germany, a commercial breeder for generously supplying Pelargonium stock plants.
PY - 2012/1
Y1 - 2012/1
N2 - Pelargonium (Pelargonium x hortorum) is grown as potted or bedding plants for their colourful, showy flowers and scented foliage. Absence of senescence symptoms in the leaves of Pelargonium cuttings, their capacity to initiate roots and continued growth of initiated roots is an important quality attribute. The effects of postharvest treatments with meta-topolin (mT) and thidiazuron (TDZ) to 'Katinka' Pelargonium cuttings were investigated. Leaves treated with mT or TDZ for 5 d had higher leaf chlorophyll contents than untreated controls. Exposing cuttings to mT had no effect on the rooting proportion (%) and average root diameter. Similarly, 0.05 mM. mT had no effect on number of roots per cutting. However, mT slightly reduced root length, root surface area and total volume of the roots. TDZ severely inhibited adventitious root formation, thus it reduced all the root parameters investigated. In conclusion, mT is very active in retarding leaf senescence, and combined with the observed ease of rooting of cuttings after mT treatment, this treatment is a suitable alternative to TDZ in delaying the onset of leaf yellowing in ornamental crops.
AB - Pelargonium (Pelargonium x hortorum) is grown as potted or bedding plants for their colourful, showy flowers and scented foliage. Absence of senescence symptoms in the leaves of Pelargonium cuttings, their capacity to initiate roots and continued growth of initiated roots is an important quality attribute. The effects of postharvest treatments with meta-topolin (mT) and thidiazuron (TDZ) to 'Katinka' Pelargonium cuttings were investigated. Leaves treated with mT or TDZ for 5 d had higher leaf chlorophyll contents than untreated controls. Exposing cuttings to mT had no effect on the rooting proportion (%) and average root diameter. Similarly, 0.05 mM. mT had no effect on number of roots per cutting. However, mT slightly reduced root length, root surface area and total volume of the roots. TDZ severely inhibited adventitious root formation, thus it reduced all the root parameters investigated. In conclusion, mT is very active in retarding leaf senescence, and combined with the observed ease of rooting of cuttings after mT treatment, this treatment is a suitable alternative to TDZ in delaying the onset of leaf yellowing in ornamental crops.
KW - Chlorophyll
KW - Leaf senescence
KW - Meta-topolin
KW - Pelargonium zonale
KW - Rooting
KW - Thidiazuron
UR - http://www.scopus.com/inward/record.url?scp=80053653083&partnerID=8YFLogxK
U2 - 10.1016/j.postharvbio.2011.09.010
DO - 10.1016/j.postharvbio.2011.09.010
M3 - Article
AN - SCOPUS:80053653083
VL - 63
SP - 107
EP - 110
JO - Postharvest biology and technology
JF - Postharvest biology and technology
SN - 0925-5214
IS - 1
ER -