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  • Title
  • CERTIFICATE
  • DEDICATION
  • DECLARATION
  • ACKNOWLEDGEMENT
  • CONTENTS
  • LIST OF TABLES
  • LIST OF FIGURES
  • LIST OF PLATES
  • ABBREVIATIONS
  • 1. INTRODUCTION
  • 2. REVIEW OF LITERATURE
  • 2.1 Growth
  • 2.1.1 Morphology
  • 2.1.1.1 Plant height
  • 2.1.1.2 Stem diameter
  • 2.1.1.3 Branches
  • 2.1.1.4 Number of leaves
  • 2.1.1.5 Leaf thickness
  • 2.1.2 Classical growth parameters
  • 2.1.2.1 Total dry matter
  • 2.1.2.2 Root dry weight
  • 2.1.2.3 Leaf weight ratio
  • 2.1.2.4 Root weight ratio
  • 2.1.2.5 Ratio of shoot to root
  • 2.1.2.6 Ratio of photosynthetic tissue to support tissue
  • 2.1.2.7 Total leaf area per plant
  • 2.1.2.8 Specific leaf weight
  • 2.1.2.9 Specific leaf area
  • 2.1.2.10 Leaf area ratio
  • 2.1.2.11 Net assimilation rate
  • 2.1.2.12 Relative growth rate
  • 2.2 Anatomy
  • 2.2.1 Foliar anatomy
  • 2.2.2 Chloroplast structure
  • 2.3 Respiration
  • 2.4 Photosynthesis
  • 2.4.1 Light response characterestics
  • 2.4.2 Maximum photosynthetic rate
  • 2.4.3 Photosynthetic pigments
  • 2.4.3.1 Chlorophyll contents
  • 2.4.3.2 Carotenoid contents
  • 3. MATERIALS AND METHODS
  • 3.1 Location
  • 3.2 Physiography and climatology
  • 3.2.1 Soil
  • 3.3 Meteorological observations
  • 1 Meterological observations during the period under study
  • 3.4 Cultural practices and management
  • 3.4.1 Materials
  • Plate I. Medicinal plants grown as intercrops in rubber plantations
  • (1) Strobilanthes heyneanus
  • (2) Plumbago rosea
  • (3) Adhatoda vasica
  • (4) Adhatoda beddomei
  • (5) Alpinia galanga
  • 3.4.2 Planting
  • 3.5 Treatments
  • Plate II. View of the experimental plots
  • 3.6 Sampling
  • 3.7 Parameters studied
  • 3.8 Statistical techniques
  • 3.9 Photography
  • 4. RESULTS
  • 4.1 Impact of shade on growth
  • 4.1.1 Morphology
  • Plate III & IV Effect of different levels of shade on the growth of five species of medicinal plants
  • (1) Adhatoda bedomei
  • (2) Adhatoda vasica
  • (3) Alpinia galanga
  • (4) Plumbago rosea
  • (5) Strobilanthes heyneanus
  • 4.1.2 Classical growth parameters
  • 4.1 2.1 Total dry weight
  • 4.1.2.2 Leaf dry weight
  • 4.1.2.3 Stem dry weight
  • 4.1.2.4 Root dry weight
  • 4.1.2.5 Total leaf number
  • 4.1.2.6 Total leaf area per plant
  • 4.1.2.7 Ratio of above ground dry weight to underground dry weight
  • 4.1.2.8 Ratio of photosynthetic tissue to support tissue
  • 4.1.2.9 Single leaf area
  • 4.1.2.10 Specific leaf weight
  • 4.1.2.11 Specific leaf area
  • 4.1.2.12 Leaf weight ratio
  • 4.1.2.13 Crop growth rate
  • 4.1.2.14 Relative growth rate
  • 4.12.15 Net assimilation rate
  • 4.1.2.16 Leaf area ratio
  • 4.1.2.17 Leaf area growth rate
  • 4.1.2.18 Leaf area duration
  • 2 Height (cm) in shade treated medicinal plants at different periods of analysis
  • 3 Total dry matter (g/plant) in shade treated medicinal plants at different periods of analysis
  • I Total dry matter (g/plant) in shade treated medicinal plants at different periods of analysis
  • 4 Total leaf dry weight (g/plant) in shade treated medicinal plants at different periods of analysis
  • 2 Total leaf dry weight (g/plant) in shade treated medicinal plants at different periods of analysis
  • 5 Total stem dry weight (g/plant) in shade treated medicinal plants at different periods of analysis
  • 3 Total stem dry weight (g/plant) in shade treated medicinal plants at different periods of analysis
  • 6 Total root dry weight (g / plant) in shade treated medicinal plants at different periods of analysis
  • 4 Total root dry weight (g / plant) in shade treated medicinal plants at different periods of analysis
  • 7 Total leaf number per plant in shade treated medicinal plants at different periods of analysis
  • 5 Total leaf number per plant in shade treated medicinal plants at different periods of analysis
  • 8 Cumulative leaf area per plant (cm2) in shade treated medicinal plants at different periods of analysis
  • 6 Total leaf area per plant (cm2) in shade treated medicinal plants at different periods of analysis
  • 9 Above ground dry matter (g/plant) in shade treated medicinal plants at different periods of analysis
  • 7 Above ground dry matter (g/plant) in shade treated medicinal plants at different periods of analysis
  • 10 Ratio of above ground dry matter to below ground dry matter ratio in shade treated medicinal plants at different periods of analysis
  • 8 Above ground dry matter to below ground dry matter in shade treated medicinal plants at different periods of analysis
  • 11 Ratio of photosynthetic tissue to support tissue ratio in shade treated medicinal plants at different periods of analysis
  • 9 Photosynthetic tissue to support tissue in shade treated medicinal plants at different periods of analysis
  • 12 Single leaf area (CM) in shade treated medicinal plants at different periods of analysis
  • 10 Single leaf area (cm) in shade treated medicinal plants at different periods of analysis
  • 11 Specific leaf weight (g / cm2) in shade treated medicinal plants at different periods of analysis
  • 13 Specific leaf weight (g / cm2) in shade treated medicinal plants at different periods of analysis
  • 14 Specific leaf area (cm.g) in shade treated medicinal plants at different periods of analysis
  • 12 Specific leaf area (cm2/g) in shade treated medicinal plants at different periods of analysis
  • 15 Leaf weight ratio in shade treated medicinal plants at different periods of analysis
  • 13 Leaf weight ratio in shade treated medicinal plants at different periods of analysis
  • 16 Crop growth rate (.g, plant/day) in shade treated medicinal plants at different periods of analysis
  • 14 Crop growth rate (g /plant / day) in shade treated medicinal plants at different periods of analysis
  • 17 Relative growth rate (g / g / day) in shade treated medicinal plants at different periods of analysis
  • 15 Relative growth rate (g /g / day) in shade treated medicinal plants at different periods of analysis
  • l 8 Net assimilation rate (g cm 2 leaf area day) in shade treated medicinal plants at different periods of analysis
  • 16 Net assimilation rate (g cm-2 leaf area day) in shade treated medicinal plants at different periods of analysis
  • 19 Leaf area ratio in shade treated medicinal plants at different periods of analysis
  • 17 Leaf area ratio in shade treated medicinal plants at different periods of analysis
  • 20 Leaf area growth rate (cm2 / day) in shade treated medicinal plants at different periods of analysis.
  • 18 Leaf area growth rate (cm2 / day) in shade treated medicinal plants at different periods of analysis
  • 21 Leaf area duration in shade treated medicinal plants
  • 19 Leaf area duration in different shade treatments of five species of medicinal plants
  • 4.2 Impact of shade on foliar anatomy
  • Plate V. Transection of open and shade leaves x 125
  • (1) & (2) Adhatoda beddomei
  • (3) & (4) Adhatoda vasica
  • (5) & (6) Alpinia galanga
  • (7) & (8) Plumbago rosea
  • (9) & (10) Strobilanthes heyneanus
  • 22 Foliar anatomy of open and shade (70%) plants
  • 4.3 Impact of shade on photosynthesis and other related parameters
  • 4.3.1 Photosynthesis
  • 4.3.1.1 Diurnal changes in photosynthetic characteristics
  • 20 Diurnal variation in meteorological variables in medicinal plants grown under open sunlight and 70% shade
  • 21 Diurnal variation in photosynthetic rate (µmol /m2 / s) under open sunlight and 70% shade in five species of medicinal plants
  • 22 Diurnal variation in conductance (mol / m2 / s) under open sunlight and 70% shade in five species of medicinal plants
  • 23 Diurnal variation in transpiration (?mol / m2 / s) under open sunlight and 70% shade in five species of medicinal plants
  • 4.3.1.2 Maximum photosynthetic rate
  • 23 Photosynthetically active radiation recorded in different treatments in the month of February under clear sky condition
  • 24 Maximum photosynthetic rate (µmol / m2 / s) in different treatments in the month of February under clear sky conditions
  • 24 Maximum photosynthetic rate (?mol / m2 / s) in different treatments in the month of February under clear sky conditions
  • 4.3.2 Photosynthetic pigments
  • 4.3.2.1 Chlorophyll contents
  • 25 Chlorophyll contents (mg/g dry weight) in shade treated Adhatoda beddomei at different periods of analysis
  • 26 Chlorophyll contents (mg/g dry weight) in shade treated Adhatoda vasica at different periods of analysis
  • 27 Chlorophyll contents (mg/g dry weight) in shade treated Alpinia galanga at different periods of analysis
  • 28 Chlorophyll contents (mg / g dry weight) in shade treated Plumbago rosea at different periods of analysis
  • 29 Chlorophyll contents (mg / g dry weight) in shade treated Strobilanthes heyneanus at different periods of analysis
  • 25 Chlorophyll contents (mg/g dry weight) in shade treated Adhatoda beddomei at different periods of analysis
  • 26 Chlorophyll contents (mg/g dry weight) in shade treated Adhatoda vasica at different periods of analysis
  • 27 Chlorophyll contents (mg/g dry weight) in shade treated Alpinia galanga at different periods of analysis
  • 28 Chlorophyll contents (mg/g dry weight) in shade treated Plumbago rosea at different periods of analysis
  • 29 Chlorophyll contents (mg / g dry weight) in shade treated Strobilanihes heyneanus at different periods of analysis
  • 4.3.2.2 Carotenoid contents
  • 30 Carotenoid contents (mg / g dry weight) in shade treated medicinal plants at different periods of analysis
  • 30 Carotenoid contents (mg/g dry weight) in shade treated medicinal plants at different periods of analysis
  • 31 Carotenoid contents (mg/g dry weight) in. shade treated medicinal plants at different periods of analysis
  • 5. DISCUSSION
  • 5.1 Impact of shade on growth
  • 5.1.1 Morphology
  • 5.1.2 Classical growth parameters
  • 5.2 Impact of shade on foliar anatomy
  • 5.3 Impact of shade on photosynthesis and other related parameters
  • 5.3.1 Photosynthesis
  • 5.3.1.1 Diurnal changes in photosynthetic characteristics
  • 5.3.1.2 Maximum photosynthetic rate
  • 5.3.2 Photosynthetic pigments
  • 5.3.2.1 Chlorophyll contents
  • 5.3.2.2 Carotenoid contents
  • 6. SUMMARY AND CONCLUSION
  • BIBLIOGRAPHY