Vijayan D, Archana CP, Geetha SP and Indira Balachandran (2013) Developing RAPD markers for identification of three source plants of Ayurvedic raw drug ‘Patha’. Medicinal Plants - International Journal of Phytomedicines and Related Industries 5(1): 55–58.

Archana CP, Geetha SP and Balachandran I (2013) In vitro microrhizome induction in three high yielding cultivars of Curcuma longa L and their comparative phytopathological analysis. Inter. Jour. Appl. Res. and Studies 2(7): 1–7.

Archana CP, Geetha SP and Balachandran I. (2013) In vitro microrhizome induction in three high yielding cultivars of Zingiber officinale Rosc. and their phytopathological analysis. Inter. Jour. Advanced Biotech. And Res. 4(3): 296–300.

Archana CP, Geetha SP and Balachandran I. (2013). Comparative studies on in vitro microrhizome induction in three varieties of Curcuma longa (Turmeric) – The role of two stress hormones. Inter.Jour.Scientific Res.and Management1(4):230-237.

George S, Unnikrishnan KP, Raghu AV,Geetha SP and Balachandran I(2012)

Effect of nutrients and sucrose on microrhizome production and diosgenin accumulation in cultures of Costus speciosus Sm. in vitro. Medicinal Plants - Int. Jour. Phytomed. Related Industries, 4(1): 7–11.

George S, Geetha SP and Balachandran I (2012) In vitro multiplication of Rauvolfia serpentina (L.) Benth. ex Kurz - An endangered medicinal plant. Medicinal Plants – Int. Jour. Phytomed. Related Industries, 4(1): 45–48.

Raghu AV, Unnikrishnan KP, Geetha SP, Gerald Martin and Indira Balachandran

(2011). Plant regeneration and production of embelin from organogenic and embryogenic callus cultures of Embelia ribes Burm. f.—a vulnerable medicinal plant. In Vitro Cell. Develop. Biol.-Plant (Published online 10 May 2011).

Raghu AV, Geetha SP, Martin, G Balachandran I. and Mohanan KV (2010) Micropropagation of Tribulus terrestris Linn. Indian Journal of Natural Products and Resources 1(2): 232–235

Geetha SP and Indira Balachandran (2009) Drumstick Tree – A multi purpose miracle tree. LINK Natural Products Digest 5(1): 10–11.

Geetha SP, Gerald Martin, Raghu AV, Lyric PS Indira Balachandran and Ravindran PN (2008). Optimizing culture conditions for in vitro propagation of Trichosanthes cucumerina L.–an important medicinal plant. Jour. Herbs, Spices and Med. Plants, 14(1–2): 15–28.

Satheesh George, Geetha S P. and Indira Balachandran. 2008. Micropropagation of Baliospermum montanum (Willd.) Muell. - Arg. - A red listed medicinal plant. Jour. Plant Sci. 3(1): 111–115.

RaghuAV, GeraldMartin,  Priya V, Geetha SP and Indira Balachandran (2007). Low cost alternatives for micropropagation of Centella asiatica. Jour. Plant Sci. 2(6): 592–599.

Raghu AV, Geetha SP, Gerald Martin, Indira Balachandran and Ravindran P N (2007). An improved micropropagation protocol for Bael - a vulnerable medicinal tree. Research Jour. Botany 2(4): 186–194.

Satheesh George, Geetha SP, Sudhakar Raja S and Indira Balachandran (2007). In vitro medium term conservation of Bacopa monnieri L. Pennel. – The memory plus plant – under slow growth conditions. Plant Genetic Resources News Letter, 151: 54–60.

Raghu AV, Geetha SP, Gerald Martin, Indira Balachandran and Ravindran PN (2006). In vitro clonal propagation through mature nodes of Tinospora cordifolia (willd.) Hook F. and Thoms. An important Ayurvedic medicinal plant. In vitro Cell. Develop. Biol. 42(6): 584 – 588.

Raghu AV, Geetha SP, Gerald Martin, Indira Balachandran and Ravindran, PN (2006). Further research on clonal propagation of Costus speciosus. Jour. Tropical Med. Plants, 7(2): 229-234.

George S, Geetha SP, Indira Balachandran and Ravindran PN (2006). In vitro cultivation of Bacopa monnieri – In growth regulator free medium. Jour. Tropical Medicinal Plants, 7(1): 91–94.

Raghu AV, Geetha SP, Gerald Martin, Indira Balachandran and Ravindran PN (2006). Direct organogenesis from leaf explants of Embelia ribes Burm. – a vulnerable medicinal plant. J. Forest Research, 11: 57–60.

Gerald Martin, Geetha SP, Raghu AV, Indira Balachandran and Ravindran PN (2006). An efficient micropropagation system for Celastrus paniculatus – A vulnerable medicinal plant. J. Forest Research, 11: 461–465.

Gerald Martin, Geetha SP, Raghu AV, Indira Balachandran and Ravindran PM (2005). In vitro multiplication of Holarrhena pubescens J. Tropical Med. Plants 6(1): 111–115.

In regional language

Geetha SP (2008). Oushadhasasya prajananam noothana margathiloode (Propagation of medicinal plants through modern methods), In Harinarayanan M K and Radhamony M (Eds.) Ayurmahima, Kottakkal Ayurveda Series – 68, (In Malayalam), Arya Vaiya Sala, Kottakkal, Kerala, India. pp. 187–190.

Ravindran PN, Geetha SP, and Balachandran I (2012) Galangal. In Peter KV (Ed.) Handbook of Herbs and Spices, Second Edition Vol. 2, pp. 303–318, Woodhead Publishing Ltd., UK.

Geetha SP, Raghu AV, Gerald Martin, Satheesh George and Indira Balachandran (2009). In vitro propagation of two tuberous medicinal plants: Holostemma ada-kodien and Ipomoea mauritiana. In Jain SM and Saxena KP (Eds.) Methods in Molecular Biology – Protocols for In Vitro Cultures and Secondary Metabolite Anlysis of Aromatic and Medicinal Plants. pp. 81–92. Humana Press (Springer Science), New York.

Ravindran PN, Geetha SP and Minoo Divakaran (2010) Other Herbs and Spices: Mango Ginger to Wasabi. In Peter KV (Ed.) Handbook of Herbs and Spices, Second Edition Vol. 2, pp. 557–582, Woodhead Publishing Ltd., UK.

Ravindran PN, Geetha SP, Nirmal Babu K, Minoo D and Malhothra SK (2007) Minor and Under-Utilized Spices and Herbs. In Ochatt S and Jain SM (Eds.) Breeding of Neglected and Under-Utilized Crops, Spices and Herbs. pp. 299–373. Science Publishers, Enfield.

Nirmal Babu K, Minoo D, Geetha SP, Sumathi V and Praveen K (2007) Biotechnology of Turmeric and related species. In Ravindran, PN Nirmal Babu K. and Sivaraman K. (Eds.) Turmeric: The Genus Curcuma, pp. 107–128. CRC Press, Roca Raton

Ravindran PN, Geetha SP and Minoo Divakaran (2010) Other Herbs and Spices: Achiote to Scechuan Pepper. In Peter KV (Ed.) Handbook of Herbs and Spices, Second Edition Vol. 2, pp. 534–556, Woodhead Publishing Ltd., UK.

Sadheeshna kumari S, Satheesh George S and Geetha SP (2013). Rapid propagation of Decalepis salicifolia(Bedd.Ex.Hook.F.0 Venter using ex vitro Rooting and controlled Acclimation of Micropropagules In Proc. 25th Kerala Science Congress,Jan.29th -1st feb.2013. Thiruvananthapuram, pp.382-384.

Archana CP, Deepu Vijayan, Geetha SP and Indira Balachandran (2012). Genetic fidelity assessment of microrhizome induced plantlets of Curcuma longa (Zingiberaceae) cultivars using RAPD markers. In Proc. 6th International Symposium on the family Zingiberaceae, University of Calicut, Kerala, India. 63-64.

Archana CP, Geetha SP and Indira Balachandran (2012). Microrhizome and minirhizomes induction as a means of pathogen free planting material production in ginger (Zingiber officinale Rosc.). In Proc. 24th Kerala Science Congress, Kottayam, Kerala, India. 219-222.

George S, Geetha SP, Augustine A and Indira Balcahndran (2010). In vitro conservation studies in Hemidesmus indicus, Decalepis hamiltonii and Utleria salicifolia. In Proc. 22nd Kerala Science Congress, 28 – 31, Jan. 2010. KFRI, Peechi, pp. 258–259.

Vineetha Chandran, Dhanya M. and Geetha SP (2010) .Studies of allelopathic effect of Pluchea lanceolata on growth characteristics of four medicinal plant species – an in vitro approach. .In Proc. 22nd Kerala Science Congress, 28 – 31, Jan. 2010. KFRI, Peechi, pp. 260–261.

Raghu AV, Geetha, SP and Indira Balchandran (2010). In vitro propagation, flowering and fruiting of Embelia tsjeriam-cottam – An endangered medicinal plant of the Western Ghats. In Proc. 22nd Kerala Science Congress, 28 – 31, Jan. 2010. KFRI, Peechi, pp. 268–269.

Archana CP, Lyric PS, Gerald Martin, Raghu AV, Geetha SP and Indira Balachandran (2010). Low cost options for in vitro microrhizome and minirhizome production in ginger (Zingiber officinale Rosc.). In Proc. 22nd Kerala Science Congress, 28 – 31, Jan. 2010. KFRI, Peechi, pp. 280–281.

Martin G, Geetha SP and Augustine A (2010). Genetic stability analysis of micropropagated plantlets of Operculina turpethum. In Proc. 22nd Kerala Science Congress, 28 – 31, Jan. 2010. KFRI, Peechi, pp. 891–892.

Vineetha Chandran, Geetha SP, Archana CP, Gerald Martin, Raghu AV and Indira Balachandran (2009). The efficiency of natural and artificial pollinations in Cyclea peltata and studies on seed germination. National seminar on ‘Genetics, Breeding and Biotechnology’. Gregor Mendel Foundation, department of Botany, university of Calicut, Kerala, India. (Paper won best poster Award).

Gerald Martin, Geetha SP, Anu Augustine and Indira Balachandarn (2009). Enhanced production of Scopoletin from Operculina turpethum callus cultures. In Proc. 21th Kerala Science Congress, 28–31 January 2009. pp. 717–719.

Archana CP, Lyric PS, Geetha SP, Gerald Martin, Raghu AV and Indira Balachandran (2009). Effect of abscisic acid and Jasmonic acid on in vitro shoot cultures of Curcuma longa L. In Proc. 21th Kerala Science Congress, 28–31 January 2009. pp. 723–725.

Lyric PS, Archana CP, Gerald Martin, Raghu AV, Geetha SP, and Indira Balachandran (2009). Effect of sucrose on in vitro microrhizome induction in shoot cultures of Kaempferia rotunda Linn. National seminar on ‘Genetics, Breeding and Biotechnology’. Gregor Mendel Foundation, Department of Botany, University of Calicut, Kerala, India.

Archana CP, Lyric PS, Geetha SP, Gerald Martin, Raghu AV and Indira Balachandran (2009) Effect of media components and light on in vitro microrhizome induction in shoot cultures of ginger (Zingiber officinale Rosc.) National seminar on ‘Genetics, Breeding and Biotechnology’ Gregor Mendel Foundation, Department of Botany, University of Calicut, Kerala, India.

Archana CP, Lyric PS, Raghu AV, Gerald Martin, Geetha SPand Indira Balachandran (2008) Effect of abscisic acid and Jasmonic acid on in vitro microrhizome induction in shoot cultures of ginger (Zingiber officinale Roscoe). In Abst. National Symposium on Herbal Drug Research, Sept. 25 & 26, 2008. Bharathiar University, Tamilnadu, p. 24.

Vineetha Chandran, Geetha SP and Indira Balachandran (2008) Improvement in Holostemma ada-kodien Schult. an endangered medicinal plant., through conventional and biotechnological approaches. In  National Symposium on Herbal Drug Research, Sept. 25–26, 2008. Bharathiar University, Tamilnadu, p. 25.S

Raghu AV, Unnikrishnan KP, Geetha SP, G Martin and Indira Balachandran( 2007) Plant regeneration and production of embelin from organogenic and embryogenic callus cultures of Embelia ribes Burm. f. – a vulnerable medicinal plant. The 7th International symposium in the series “Recent Advances in Plant Biotechnology” –High Tatra Slovak Republic, June 10-16, 2007.

Raghu AV, Geetha SP, Martin G and Indira Balachandran(2007) Adventitious shoot proliferation from internodal stem explants of Embelia ribes Burm. f. – a vulnerable medicinal plant, In Proc. 19th Kerala Science Congress, Jan. 29–31, 2007, Kannur University, Kannur, State Council for Science, Technology and Environment, Kerala, India,.pp. 194–196.

George S, Geetha SP, Udayan PS, Tushar KV, Anu Augustine and Indira Balachandran (2007). Micropropagation and in vitro conservation of Utleria salicifolia Bedd. Ex Hook. F. (Periplocaceae) – A little known monotypic, endemic and critically endangered medicinal plant of the Western Ghats. In Proc. 19th Kerala Science Congress, Jan. 29–31, 2007, Kannur University, Kannur, State Council for Science, Technology and Environment, Kerala, India,.pp. 200–202.

George S, Unnikrishnan KP, Raghu AV, Geetha SP and Balachandran (2007). Effect of nutrients and sucrose on microrhizome production and Diosgenin accumulation on in vitro cultures of Costus speciosus In Proc. 19th Kerala Science Congress, Jan. 29–31, 2007. Kannur University, Kannur, State Council for Science, Technology and Environment, Kerala, India, pp. 230–233.

Gerald Martin, Geetha SP, Anu Augustine (2007). In vitro conservation of Operculina turpethum – A threatened medicinal plant. In Proc. 19th Kerala Science Congress, Jan. 29–31, 2007. Kannur University, Kannur, State Council for Science, Technology and Environment, Kerala, India, pp. 243–245.

Gerald Martin, Geetha SP and Anu Augustine (2006) Micropropagation from juvenile explants of Operculina turpethum – A threatened medicinal plant, In Proc. 18th Kerala Science Congress, CESS, Thiruvananthapuram (Best poster Award).

Raghu AV, Geetha SP, Gerald Martin and Indira Balachandran (2006). Direct regeneration from leaf explants of Embelia ribes- a vulnerable medicinal plant, In Proc. 18th Kerala Science Congress, CESS, Thiruvananthapurams,

Geetha SP, Gerald Martin and Raghu AV. (2005) In vitro propagation of some important Ayurvedic medicinal plants, their conservation and utilization. Pp. 238–240 In. Proc. 17th Kerala Science Congress, Jan. 29–31, Kerala Forest Research Institute, Thrissur, State Council for Science, Technology and Environment, Kerala.

Geetha SP (2005) Induction of microrhizomes in Kaempferia rotunda L. – An endangered medicinal plant.  Pp. 308 In. Proc. 17th Kerala Science Congress, Jan. 29–31, Kerala Forest Research Institute, Thrissur, State Council for Science, Technology and Environment, Kerala.

Geetha SP, Gerald Martin, Raghu AV, Satheesh George, Indira Balachandran and  Ravindran PN (2005) Studies on tissue culture of Ayurvedic medicinal plants, their conservation and utilization. In abstract National Symposium on ‘Plant Biotechnology: New Frontiers’ and 27th Annual Meeting of the Plant Tissue Culture Association (India), 18–20 November, 2005, Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow

Gerald Martin, Geetha S P,  Raghu AV, Indira Balachandran and Ravindran PN (2005) A comparative study on in vitro microrhizome induction in Kaempferia galanga and K. rotunda In abstract National Symposium on ‘Plant Biotechnology: New Frontiers’ and 27th Annual Meeting of the Plant Tissue Culture Association (India), 18–20 November, 2005, Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow

Raghu AV, Geetha SP, Gerald Martin, Indira Balachandran and Ravindran PN (2005) In vitro clonal propagation of Tinospora cordifolia –an important medicinal plant. In abstract National Symposium on ‘Plant Biotechnology: New Frontiers’ and 27th Annual Meeting of the Plant Tissue Culture Association (India), 18–20 November, 2005, Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow

Satheesh George, Raghu AV, Gerald Martin, Geetha SP, Indira Balachandran and Ravindran PN (2005) In vitro conservation studies in three important ayurvedic medicinal plants (Hemidesmus indicus, Aegle marmelos and Celastrus paniculatus). In abstract National Symposium on ‘Plant Biotechnology: New Frontiers’ and 27th Annual Meeting of the Plant Tissue Culture Association (India), 18–20 November, 2005, Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow.

Geetha SP, Indira Balachandran and Ravindran PN (2005) In vitro shoot culture and micro-tuber induction in Jivanti (Holostemma ada-kodien Schult.). In abstract National Symposium on ‘Plant Biotechnology: New Frontiers’ and 27th Annual Meeting of the Plant Tissue Culture Association (India), 18–20 November, 2005, Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow

Satheesh George, Geetha SP, Indira Balachandran and Ravindran PN (2004) Micropropagation and In vitro conservation of Bacopa monnieri (L.) Pennel – The memory plus plant. In Abstract. 26th Annual Meeting of the Plant Tissue Culture Association of India and National Symposium on ‘Biotechnology for a better future’, Jan. 15 – 17, St. Aloysius College, Mangalore, p. 36.

Gerald Martin, Geetha SP, Indira Balachandran and Ravindran PN (2004) Micropropagation of Celastrus paniculatus Willd. – A highly sought after medicinal plant in Ayurveda. In Abstract. 26th Annual Meeting of the Plant Tissue Culture Association of India and National Symposium on ‘Biotechnology for a better future’, Jan. 15 – 17, St. Aloysius College, Mangalore, p. 43.

Geetha SP, Indira Balachandran and Ravindran PN (2004) Micropropagation of Trichosanthes cucumerina (Linn.) – A very important medicinal plant. In Abstract. 26th Annual Meeting of the Plant Tissue Culture Association of India and National Symposium on ‘Biotechnology for a better future’, Jan. 15 – 17, St. Aloysius College, Mangalore, p. 49.

Raghu AV, Geetha SP, Indira Balachandran and Ravindran PN (2004) Micropropagation of Hemidesmus indicus  (L.) R. Br. – The Indian Sarasaparilla. In Abstract. 26th Annual Meeting of the Plant Tissue Culture Association of India and National Symposium on ‘Biotechnology for a better future’, Jan. 15–17, St. Aloysius College, Mangalore, P. 50.

Sadheeshna kumara S., Vineetha Chandran, Chithra M., Geetha S.P., Satheesh George and Indira Balachandran(2013) Floral structure and pollinationin relation to fruit set in Holostemma ada-kodien an endangered medicinal plant of Western Ghats of Kerala state of India. In proc. National seminar on Forestry and Agriculture, 7th – 8th2013, Kerala Forest research institute Peechi Kerala.pp.21.

Chithra M., Prabhu Kumar K. M. and S.P Geetha (2013) Ethanobotanical study of Paniya Tribes of Nilamboor forest, Malappuram District. National seminar on Forestry and Agriculture, 7 th – 8th2013, Kerala Forest research institute Peechi Kerala.pp.75 .

Sadheeshna kumari,S., Geetha S.P., Satheesh George and Indira Balachandran(2014) Phenotypic evaluation and preparation of Baliospermum montanum (Wild) Muell.-Arg.collections. In Proc. 26th Kerala Science Congress, Jan.28th -31st 2014, Wayanad. Kerala. pp. 295

Rahul P.R., Geetha S.P.and Prabhu kumar (2014) RAPD profiling of source plants of Ayurvedic drug ‘brahti’ along with selected solanum species. In Proc. 26th Kerala Science Congress, Jan.28th -31st 2014, Wayanad. Kerala. pp. 295.

Archana C.P., Geetha S.P. and Indira Balachandran(2014) In vitro microrhizome induction in three cultivars of Curcuma longa (turmeric) for pathogen free planting material production. In Proc. 26th Kerala Science Congress, Jan.28th -31st 2014, Wayanad. Kerala. pp.101.

Bhavadas N., Raghu A. V.,Sulaiman C.T., Geetha S.P. and Indira Balachandran .Variability studies of conventionally propagated and micropropagated plants of Ipomoea mauritiana collections using phytochemical analysis. In Proc. 26th Kerala Science Congress, Jan.28th -31st 2014, Wayanad. Kerala. pp.107.

Effect of photoperiod, ammonium nitrate, abscisic acidand jasmonic acid on in vitro culture responses and micro rhizome inductionin shoot cultures of Curcuma longa L cv. Kedaram. In Proc. 26th Kerala Science Congress, Jan.28th -31st 2014, Wayanad. Kerala. pp.111.

Sreedas M., Archana C.P. and S.P.Geetha Morphological anatomical and histochemical changes during in vitro microrhizome development in ginger ( Zingifer officinale Rosc.) cultivar varada. In Proc. 26th Kerala Science Congress,Jan.28th -31st 2014 , Wayanad. Kerala. pp.105

Chithra M., Prabhu Kumar K. M. and S. P. Geetha (2014)  Ethnobotanical  usages  of  some  plants  by  the  Kattunaikka  Tribes  of  Nilambur , Malappuram District. In Proc. 26th Kerala Science Congress, Jan.28th -31st 2014, Wayanad. Kerala. pp. 218

Sadheeshnakumari S, Rahul PR and S.P Geetha  (2015) A Report on the association between Phyllanthus amarus and  Epicephala moth – a bane of seed production.  In Proc. 27th Kerala Science Congress, Jan.27th -29th 2014, Alappuzha, Kerala. pp. 17.