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Transpiration traits and biodrainage potential of some tree species

KrishiKosh

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Title Transpiration traits and biodrainage potential of some tree species
 
Creator Mahesh Kumar
 
Contributor Datta, K.S.
 
Subject Irrigation, Transpiration, Groundwater table, Area, Planting, Diseases, Fruits, Melia azedarach, Evaporation, Leaf area
 
Description The present investigation was carried out on 10 different tree species i.e.
Eucalyptus Clone-10, Eucalyptus Clone-130, Eucalyptus Clone-3, Eucalyptus hybrid,
Tamarix aphylla, Prosopis juliflora, Callistemon viminalis, Melia azedarach,
Terminalia arjuna and Pongamia pinnata to study various transpirational traits
and correlate these with their biodrainage potential. For this, their growth
parameters (height, diameter at breast height (DBH) and girth) and
physiological traits (leaf area index (LAI), stomatal conductance, stomata
density, relative water content (RWC), excised leaf water loss (ELWL),
potometric water loss (PWL), sub stomatal CO2, transpiration rate, and
photosynthesis rate) were recorded. Eucalyptus C-10, Eucalyptus C-3, Eucalyptus
C-130 and Eucalyptus hybrid showed maximum plant height and DBH. LAI was
highest in Eucalyptus hybrid. Stomatal density was found in the range of
197-335/mm2 on adaxial side, 215-451/mm2 on abaxial side. Minimal stomata
density of 167 /mm2 was found in Tamarix aphylla and maximum of 592/ mm2
in Callistemon viminalis. Overall range of stomatal conductance, photosynthetic
rate, sub-stomatal CO2 and transpiration rate were in range of 0.08-0.40 mol m2
S-1, 3.52 to 12.0 μ mol m2 S-1, 325.3- 269.48 μ mol/ mol, 4.22-7.39 m mol m2 S-1
respectively. PWL, RWC, ELWL were on the higher side in Eucalyptus species
(varying amongst different species). Melia azedarach showed longer and wider
vessels length than other species but Tamarix aphylla had shortest vessels and
Eucalyptus Clone -130 had narrowest vessels. Tracheids were longer in
Eucalyptus C-10 and shortest in Melia azedarach with wide variation among the
different tree species. However, width of tracheids in all the species was in a
very narrow range i.e. 20-29 μm. It was seen that water table started declining
beneath the plantation after 08.00 hrs, and towards 16.00 hrs it reached a
minimum level during the diurnal cycle. Amongst the different tree species
biodrainage potential, as determined by decline in water table beneath the
plantation, was in order of: Eucalyptus C-10 ≈ Eucalyptus hybrid > Eucalyptus
C-130 ≈ Tamarix aphylla > Prosopis juliflora > Eucalyptus C-3 > Callistemon
viminalis ≈ Melia azedarach > Terminalia arjuna ≈ Pongamia pinnata. Correlation
analysis showed that by and large biodrainage potential had a significant
positive correlation with LAI, height, DBH, stomata density and transpiration
rate. Trends of significant correlation with other physiological traits like PWL,
RWC, ELWL and length and width of tracheary elements were not significantly
consistent in all the species.
 
Date 2016-11-19T14:04:37Z
2016-11-19T14:04:37Z
2008
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/86489
 
Language en
 
Format application/pdf
 
Publisher CCSHAU