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Pitcher Plant, Propagation, Meghalaya, Uses, Medicine Nauni, Solan, Himachal Pradesh, India Introduction

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Pitcher Plant, Propagation, Meghalaya, Uses, Medicine Nauni, Solan, Himachal Pradesh, India Introduction Journal of Pharmacognosy and Phytochemistry 2018; 7(3): 353-358 E-ISSN: 2278-4136 P-ISSN: 2349-8234 JPP 2018; 7(3): 353-358 Status of Nephenthes khasiana Hook. f. (Pitcher Received: 22-03-2018 Accepted: 26-04-2018 plant) in Meghalaya: A review Kalkame Ch. Momin College of Horticulture and Kalkame Ch. Momin, TS Mehra, Shivani Dobhal, Baggio Ch. Momin and Forestry, CAU, Pasighat, YC Gupta Arunachal Pradesh, India TS Mehra Abstract College of Horticulture and Carnivorous plants derive some or most of their nutrients from trapping and consuming small insects and Forestry, CAU, Pasighat, spiders. About 600 species of carnivorous plantsarereported to grow mainly in tropical or semi-tropical Arunachal Pradesh, India areas throughout the world. The majority of terrestrial carnivorous plants grow in bog and fen soils in which they encounter persistent unfavorable conditions. The soils where the carnivorous plants grow are Shivani Dobhal characterized by very low nutrients such as nitrogen, phosphorus and alkali ions, as well as high acidity. College of Horticulture and Nephenthes khasiana Hook f. is endemic to Meghalaya and is distributed throughout the state from West Forestry, CAU, Pasighat, to East Khasi hills, Jaintia hills, East, West and South Garo hills from 1000 to 1500 m altitude. Habitat Arunachal Pradesh, India destruction, decimation of species and fragmentation of large contiguous populations into isolated small and scattered ones have rendered them increasingly vulnerable to inbreeding depression, high infant Baggio Ch. Momin North-eastern Hill University, mortality and susceptibility to environmental change, ultimately leading to extinction. It has now become Tura Campus, Meghalaya, India imperative to give impetus on the conservation of N. khasiana for saving this species from extinction. The present paper explains the current status of Nephenthes khasiana and ongoing work done so far in YC Gupta conservation, propagation and diversity estimation of the species. Dr. Y S Parmar University of Horticulture and Forestry, Keywords: pitcher plant, propagation, Meghalaya, uses, medicine Nauni, Solan, Himachal Pradesh, India Introduction Unique bio-geographical partitioning with high rainfall and plenty of sunlight makes North East India remarkably rich in floral diversity. The North East region is rightly called the ‘cradle of flowering plants’. The Nepenthes, popularly known as ‘pitcher plant’ or ‘monkey cups’, is a genus of carnivorous plants. The popular name of this species ‘monkey cups’ refers to the fact that monkeys have been observed drinking rainwater from these plants. ‘Nepenthe’ literally means ‘without grief’ and in Greek mythology, it is a drug that quells all sorrows with forgetfulness. Nepenthes khasiana, the only representative of the genus Nepenthes in India, belongs to monotypic family Nepenthaceae and has a polyploid chromosome number (2n=80). Karyomorphological studies were not possible in this species due to the relatively small size of the chromosomes (Devi et al., 2012) [6]. It is an endangered, dioecious member of the [21] carnivorous plants and isendemic to the state of Meghalaya (Mandal and Mukherjee 2011) . It grows in association with Licuala peltata, Calamus erectus, Lithocarpus dealbata and fern species like Alsophila gigentea, Dicranopteris lanigera, D. splendens, Thelypteris lakhimpurensis and other species (Singh et al., 2011) [30]. The plant species can trap hundreds of individual insects of different species. The ‘insectivorous plant’ possess an extraordinary habit of adding to their supplies of nitrogenous salts by capturing and digesting the proteins of trapped insects. To catch the insects, they have developed curious mechanisms like closing of traps, formation of attractive pitchers, using sensitive sticky hairs or grabbing with tentacles, thereby ensnaring the unwary insects (Sharief and Murthy, 2010; Venugopal and Devi, 2003) [28].The aboriginal people of Meghalaya have a long association with this plant. Khasi people call it ‘Tlew-rakot’ meaning ‘devouring plant’; Jaintia’s call it ‘Kset-phare’ meaning ‘lidded fly net’ and Garo’s call it ‘Me.mang Koksi’ meaning ‘basket of theghost’. Distribution The genus is mostly distributed in the Malay Archipelago with the greatest diversity in Borneo, Sumtra and Phillipines with many endemic species. Pitcher plants are also found Correspondence growing in India, Madagascar, Sri-Lanka, Borneo, Malaysia, New Guinea, Thailand, Vietnam Kalkame Ch. Momin and Queensland in Australia (Ghosh and Ghosh, 2012) [9]. Nephenthes khasiana is the only College of Horticulture and known pitcher plant species which is found in India having a very localised distribution. Forestry, CAU, Pasighat, Isolated subpopulations are known to occur in Jarain, Jowai and Umtra areas of the Jaintia Arunachal Pradesh, India ~ 353 ~ Journal of Pharmacognosy and Phytochemistry Hills and Baghmara, Balpakram and Maheshkola area of the Belpara, Balpakram, Baghmara and Nokrek in Garo hills and South Garo Hills, Lawbah and Mawlynong region of Sutnga of Jaintia hills in Meghalaya. In the CAMP workshop EastKhasi Hills region of Meghalaya (Ghosh and Ghosh, organised at Guwahati in 2003, it was collectively agreed by 2012) [9]. Nevertheless, Nepenthes khasiana exhibits experts that 40% of the wild population from the natural considerable genetic diversity and is endemic to the state of habitat in Meghalaya had declined over the past 30 years. The Meghalaya (Mao and Kharbuli 2002, Ghosh and Ghosh, fragmented sub-population of N.khasiana distribution is 2012) [22, 9]. Fragmented subpopulations are recorded from shown in Fig.1. Fig 1: Distribution map of Nepenthes khasiana Hook. In Meghalaya state Status and conservation strategies increasingly vulnerable to inbreeding depression, high infant The curious and unique pitcher shaped plant is in great mortality and susceptibility to environmental stochasticity demand for its ornamental value and also for medicinal (Mandal and Mukherjee 2011, Verma et al. 2014) [21, 35]. properties and thus, have led to its further exploitation. The Conservation strategy needs more attention towards managing population is severely fragmented due to human habitation, disturbance to the natural habitat of the species (Singh et construction of roads and urbanization. The area of occupancy al. 2011) [30]. (AOO) is estimated as 250 km2. Therefore, the species is Few studies of N. khasiana which were carried out in the assessed as Endangered. Owing to its specific growing forests of Meghalaya show the dominance of N. khasiana. conditions and its over exploitation, the species is under threat The anthropogenic disturbance was also reported to affect N. and a sanctuary known as Baghmara Pitcher Plant wildlife khasiana (Raoet al., 1983; Tripathi et al., 2008) [27, 32]. In the Sanctuary in East Garo Hills, Meghalaya has been set up for tropical region, the forests were rated according to the the conservation of this endemic species. N. khasiana is a magnitude of anthropogenic disturbances (i.e., undisturbed, protected species, classified as ‘Endangered’ and is included mildly disturbed and highly disturbed) and it was observed in the Appendix- I of CITES and Negative List of Exports of that highly disturbed forest were the ones where N. khasiana the Government of India (Sharief and Murthy, 2010; was intensively exploited for fodder, fuel and other necessary Venugopal and Devi, 2003; Zeimer, 2010) [28]. The gene pool requirements by the villagers. Singh et al. 2011 [30] carried out in the cultivated plants is exceedingly small and as a result no studies to analyze the effect of human disturbance on new material from India has entered horticulture for decades. Nepenthes khasiana in Nokrek Biosphere Reserve. They Therefore, if the gene pool of cultivated plants cannot be concluded that the inevitable pressure due to increased, effective protection and conservation within the commercialization of the N. khasiana is leading to severe native range of the species is vital (Clarke 2014). destruction of the species. There is a need of effective conservation efforts such as trade In order to conserve the species, cultivation and propagation regulation and sustainable collection. The pitcher plant of this endangered species is of utmost importance. It has sanctuary in Jarain, Jaintia hills and Baghmara in East Garo been demonstrated by several workers that propagation of N. hills region of Meghalaya needs more focused attention for khasiana is possible through tissue culture, stem cuttings and the conservation of Nepenthes khasiana. The natural habitat seeds. Nongrum et al. (2012) [24] determined the genetic of the species is disturbed by coal mining, limestone mining, diversity by using Random Amplified Polymorphic DNA stone quarrying, forest fires(Prasad and Jeeva 2009) [26], (RAPD) markers among three populations of N. khasiana human population growth coupled with unsustainable patterns Hook f. The values of gene flow (Nm = 1.284) and the of consumption, increasing production of waste and diversity among populations of 0.280 demonstrates higher pollutants, deforestation, urban development, developmental genetic variation within the population. AMOVA or analysis projects, road laying, forest fire, jhum cultivation and poor of molecular variance revealed a low level of genetic seed germination ability. Habitat destruction, decimation of variation (21.96%) among the populations. This study species and fragmentation of large contiguous subpopulations indicates that some variation
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