Identification of areas of diversity and distribution of Pongamia based on altitude and seed traits

N SUNIL; VINOD KUMAR; N SIVARAJ; BABU ABRAHAM; N S PANWAR; K S VARAPRASAD

doi:10.56093/ijas.v82i6.18871

Authors

N SUNIL Regional Station, National Bureau of Plant Genetic Resources, Hyderabad, Andhra Pradesh 500 030
VINOD KUMAR Regional Station, National Bureau of Plant Genetic Resources, Hyderabad, Andhra Pradesh 500 030
N SIVARAJ Regional Station, National Bureau of Plant Genetic Resources, Hyderabad, Andhra Pradesh 500 030
BABU ABRAHAM Regional Station, National Bureau of Plant Genetic Resources, Hyderabad, Andhra Pradesh 500 030
N S PANWAR Regional Station, National Bureau of Plant Genetic Resources, Hyderabad, Andhra Pradesh 500 030
K S VARAPRASAD Regional Station, National Bureau of Plant Genetic Resources, Hyderabad, Andhra Pradesh 500 030

https://doi.org/10.56093/ijas.v82i6.18871

Keywords:

Germplasm, Distribution, Diversity index, Mapping, Pongamia pinnata

Abstract

A total of 123 germplasm accessions of Pongamia pinnata were collected from peninsular India. Majority, i e 64 accessions (52%) were collected from an altitudinal gradient of 0 to 250 m with oil content ranging from 15.0 to 46.0% and only 0.8% of accessions collected from altitude more than 1 000 m have exhibited modest oil percent of 27.7%. Using DIVA-GIS software, grid maps indicating diversity for oil content and 100- seed weight were generated for these accessions. Highly variant lines for oil content were observed in Prakasam and Srikakulam districts of Andhra Pradesh. However, high diversity index for 100-seed weight was observed in Srikakulam and Chittoor districts of Andhra Pradesh. Rayagad district of Odisha was a potential region for diverse lines of Pongamia germplasm for various seed traits including oil content. High regions of diversity within the surveyed districts have been identified. The present study enabled us to find out suitable altitudinal gradient and diversity rich pockets from Peninsular India.

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