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Effect of Rooting Media, Nephtheline Acetic Acid and Gibberelic Acid (GA3) on Growth Performances of Chirita moonii

Authors:

MK Rubasinghe ,

Royal Botanic Gardens, Peradeniya, LK
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KGKD Amarasinghe,

Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya, LK
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SA Krishnarajha

Royal Botanic Gardens, Peradeniya, LK
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Abstract

The effects of rooting media and Naphthelene Acetic Acid (NAA) on rooting as well as Gibberallic Acid (GA3) on growth and flowering of the endemic wild plant Chirita moonii were investigated. Two rooting media (i.e. sand alone and sand + coir dust (1:1)) with four levels of NAA (0 mg/l, 100mg/l, 150mg/l and 200mg/l) in factorial combinations were used to investigate the most suitable rooting media and NAA levels for rooting of soft wood cuttings. Three rooting media of sand, coir dust and sand + coir dust (1:1) with four levels of NAA (0 mg/l, 1000mg/l, 2000 mg/l and 3000 mg/l) were tested on rooting of leaves. Effect of five concentrations of Gibberalline (0 mg/l, 50 mg/l, 100 mg/l, 150 mg/l and 200 mg/l) on growth and flowering of seedlings were investigated. Significantly higher (p<0.05) root fresh weight, root length and root vigour were observed in cuttings grown on sand +coir dust (1:1) medium treated with 150mg/l NAA. Cuttings planted in sand + coir dust medium had a higher shoot length compared to cuttings grown on the sand alone medium. NAA levels did not affect shoot growth. Leaves planted in sand + coir dust (1:1) medium treated with 1000 mg/l NAA recorded the highest root fresh weight, number of roots and root length. Plants treated with 150 mg/l GA3 showed the best plant height, inter nodal length and highest number of branches. GA3 did not show any flowering in Chirita moonii.

Key words: endemic wild plant, growth media, sand coir dust medium

DOI: 10.4038/cjsbs.v38i1.1323

Cey. J. Sci. (Bio. Sci.) 38 (1): 17-22, 2009  

DOI: http://doi.org/10.4038/cjsbs.v38i1.1323
How to Cite: Rubasinghe, M., Amarasinghe, K. & Krishnarajha, S., (2009). Effect of Rooting Media, Nephtheline Acetic Acid and Gibberelic Acid (GA3) on Growth Performances of Chirita moonii. Ceylon Journal of Science (Biological Sciences). 38(1), pp.17–22. DOI: http://doi.org/10.4038/cjsbs.v38i1.1323
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Published on 13 Nov 2009.
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