Growth and Nodulation Characteristics of Selected Indigenous Tree Legumes
By: Harikrishnan Nair G.
Contributor(s): Asokan P K (Guide).
Material type:
BookPublisher: Vellanikkara Department of Tree Physiology and Breeding, College of Forestry 1997DDC classification: 634.9 Online resources: Click here to access online Dissertation note: MSc Abstract: An investigation was carried out to study the nodulation characteristics of seven
Indigenous/ naturalized tree legumes in Trichur district of Kerala State. The
homesteads of five selected panchayats viz. Pananchery, Madakkathara, Nadathara,
Puthur and Ollukkara of the district were surveyed to assess the natural nodulation and
to collect nodules for isolating Rhizobium.• The response of these tree legumes to
. .
inoculation with local isolates and commercial cultures of Rhizobium were done by
seed inoculation and growing the seedlings in a glass house. In a separate
experiment, the soil collected from the base of the nodulating tree were also evaluated
as an inoculant. The inoculation studies were laid out in CRD with ten replications.
The study revealed that, among the seven tree species investigated, five,
viz., Albizia lebbeck L. (Nenmeni vaka) , Dalbergia latifolia Roxb. (Rosewood/Veeti),
Erythrina stricta Roxb. (Mullumurukku), Pongamia pinnata (L.) Pierre (Ungu) and
Pterocarpus marsupium Roxb. (Venga) were nodulating in their natural stand. In the
other two viz., Adenanthera pavonina L. (Manchadi), Tamarindus indica L. (Tamarind)
nodules were absent. The largest size nodules were found in the case of E. stricta
and the smallest in D. latifolia. Regarding the shape, all nodulating species had round
nodules except for A. lebbeck which had coralloid nodules. The Rhizobium isolates
obtained from all the species showed growth in YEMA medium within 3-4 days, which
indicates that, they are fast growing type.
The promising Rhizobium isolate/commercial cultures identified were TAL -169
and DTA1 for D. lallfolia. TAL-749 and ETR, for E. stricta; P0 TR5 and Po TR3
for P. pinnata; GR-H and NBL for A. lebbeck. Inoculation with the various
isolates/commercial isolates showed no response in P. marsupium. Soil used as an
inoculant to induce nodulation was found to be unsuccessful in all the selected tree
legumes.
| Item type | Current location | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|
Theses
|
KAU Central Library, Thrissur Theses | 634.9 HAR/GR (Browse shelf) | Available | 170962 |
MSc
An investigation was carried out to study the nodulation characteristics of seven
Indigenous/ naturalized tree legumes in Trichur district of Kerala State. The
homesteads of five selected panchayats viz. Pananchery, Madakkathara, Nadathara,
Puthur and Ollukkara of the district were surveyed to assess the natural nodulation and
to collect nodules for isolating Rhizobium.• The response of these tree legumes to
. .
inoculation with local isolates and commercial cultures of Rhizobium were done by
seed inoculation and growing the seedlings in a glass house. In a separate
experiment, the soil collected from the base of the nodulating tree were also evaluated
as an inoculant. The inoculation studies were laid out in CRD with ten replications.
The study revealed that, among the seven tree species investigated, five,
viz., Albizia lebbeck L. (Nenmeni vaka) , Dalbergia latifolia Roxb. (Rosewood/Veeti),
Erythrina stricta Roxb. (Mullumurukku), Pongamia pinnata (L.) Pierre (Ungu) and
Pterocarpus marsupium Roxb. (Venga) were nodulating in their natural stand. In the
other two viz., Adenanthera pavonina L. (Manchadi), Tamarindus indica L. (Tamarind)
nodules were absent. The largest size nodules were found in the case of E. stricta
and the smallest in D. latifolia. Regarding the shape, all nodulating species had round
nodules except for A. lebbeck which had coralloid nodules. The Rhizobium isolates
obtained from all the species showed growth in YEMA medium within 3-4 days, which
indicates that, they are fast growing type.
The promising Rhizobium isolate/commercial cultures identified were TAL -169
and DTA1 for D. lallfolia. TAL-749 and ETR, for E. stricta; P0 TR5 and Po TR3
for P. pinnata; GR-H and NBL for A. lebbeck. Inoculation with the various
isolates/commercial isolates showed no response in P. marsupium. Soil used as an
inoculant to induce nodulation was found to be unsuccessful in all the selected tree
legumes.
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