Habitat analysis and domestication studies on orilathamara (Nervilia aragoana gaud) (Record no. 28113)

000 -LEADER
fixed length control field 04524nam a2200193Ia 4500
003 - CONTROL NUMBER IDENTIFIER
control field OSt
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20220329111745.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 140128s9999 xx 000 0 und d
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER
Classification number 633.8
Item number ANU/HA
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name Anulakshmi Sankar
245 ## - TITLE STATEMENT
Title Habitat analysis and domestication studies on orilathamara (Nervilia aragoana gaud)
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Place of publication, distribution, etc. Vellanikkara
Name of publisher, distributor, etc. Department of Plantation crops and spices,College of Horticulture,
Date of publication, distribution, etc. 2011
300 ## - PHYSICAL DESCRIPTION
Extent 74
502 ## - DISSERTATION NOTE
Degree type MSc
520 3# - SUMMARY, ETC.
Summary, etc. The present investigations on “Habitat analysis and domestication studies on ‘Orilathamara’ (Nervilia aragoana Gaud.)” was carried out at the Department of Plantation Crops and Spices, College of Horticulture, Vellanikkara during 2009 – 2011, with the objectives to collect the source plants of the drug Orilathamara from wild, to carry out detailed natural habitat analysis and to analyze the response of the species to domestication.

The study was conducted in four separate experiments as exploration and collection of source plants of Orilathamara from forest, natural habitat analysis, domestication trial and biochemical studies.

Forest explorations were carried out in the Peechi – Vazhani wild life sanctuary. Information regarding the occurrence of the plant was collected from tribal herb gatherers, voucher specimens collected and herbarium made. Four species of Nervilia were identified from Peechi forests. They were Nervilia infundibulifolia (Blatt. & McCann), Nervilia plicata (Andr.), Nervilia crociformis (Zoll. & Moritzi) and Nervilia aragoana Gaud. All the four species were categorised as endangered.

Natural habitat studies were also carried out in the Peechi forests. It was mainly confined to Nervilia aragoana, the only species available in sufficient numbers. Complete life cycle of the plant was studied in the natural habitat. The habitat characteristics indicated that Nervilia aragoana is a delicate orchid found in the ground vegetation of moist deciduous forest. Physical properties including soil aggregate analysis and chemical properties of the forest soil were analysed and results presented.

Domestication trial was carried out in the field attached to the Department. There were two shade levels (50%, 25%) and four growing media as FYM + sand + soil (1:1:1), leaf compost + sand + soil (1:1:1), coir pith compost + sand + soil (1:1:1) and vermi compost + sand + soil (1:1:1).

All the growing media were analysed for their physical properties, aggregate stability and chemical properties and results presented.

From the study it was observed that there was no significant difference in sprouting percentage, days to leaf emergence, complete unfurling of leaves and total biomass production of Nervilia aragoana under different treatments. Significant differences were observed in growth parameters like petiole length, leaf length, leaf width and leaf area and also tuber yield per plot. For all these parameters, performance was better under 50% shade level and in the growing medium containing FYM, sand and soil in equal proportions. Tuberization and tuber development of the species was also documented during the study and the same was correlated with weather data during the period.

Biochemical analysis was also carried out to estimate the constituents like chlorophyll, starch, soluble sugars, protein, amino acids and soxhlet extractables. Both the wild and domestic samples were analysed. The results indicated that constituents like sugars, protein and amino acids were higher in domestic tubers and starch was higher in wild tubers. TLC profile of sugars and amino acids revealed the presence of seven sugars and five amino acids in Nervilia aragoana. Anatomical study of the tuber was carried out which revealed the presence of starch grains, Calcium oxalate crystals and mycorrhizal associations in the ground tissue.
In short, the study identified four species of Nervilia in Peechi forests and they were categorised as endangered. Natural habitat characteristics of the species have been described and complete life cycle documented. Domestication proved to be successful in Nervilia aragoana. 50% shade level and normal potting mixture containing FYM, sand and soil proved to be the ideal one for growth and tuber production. Domestication also did not affect the quality of the drug in respect of components studied.
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name Mini Raj N.(Guide)
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier http://krishikosh.egranth.ac.in/handle/1/5810033435
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme
Koha item type Theses
Holdings
Withdrawn status Lost status Source of classification or shelving scheme Damaged status Not for loan Permanent Location Current Location Shelving location Date acquired Full call number Barcode Date last seen Price effective from Koha item type
          KAU Central Library, Thrissur KAU Central Library, Thrissur Theses 2014-03-18 633.8 ANU/HA 173174 2014-03-18 2014-03-18 Theses
Kerala Agricultural University Central Library
Thrissur-(Dt.), Kerala Pin:- 680656, India
Ph : (+91)(487) 2372219
E-mail: librarian@kau.in
Website: http://library.kau.in/