Indian Journal of Agricultural Research

  • Chief EditorT. Mohapatra

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Indian Journal of Agricultural Research, volume 52 issue 4 (august 2018) : 419-423

Salt tolerant polyembryonic mango rootstock (ML-2 and GPL-1): A putative role of endophytic bacteria by using BOX-PCR

R. Kannan, T. Damodaran, A.Nagaraja, S.Umamaheswari
1School of Agricultural Sciences, KARE, Krishnan Kovil, Virudhunagar-626 126, Tamil Nadu, India.
Cite article:- Kannan R., Damodaran T., A.Nagaraja, S.Umamaheswari (2018). Salt tolerant polyembryonic mango rootstock (ML-2 and GPL-1): A putative role of endophytic bacteria by using BOX-PCR. Indian Journal of Agricultural Research. 52(4): 419-423. doi: 10.18805/IJARe.A-5001.
This study was conducted to assess the movement of Na+ and K+ between leaves, stem and root segments of tolerant and susceptible polyembryonic mango accessions under saline-sodic environment. Among the 15 diverse polyembryonic from different location of South Andaman used for screening under saline-sodic condition with the soils of pH 9.45 under pot culture experiments in polyhouse, at the time of completion of experiment (240th DAS) the accessions GPL-1, ML-2 and ML-6 were selected which exhibited tolerance to sodicity with lower mortality percent of 6.67 to 13.33% and the rest of polyembryonic seedling were having huge mortality percent ranging from 96.67 to 100.00%. The Na+/K+ ratio in roots of tolerant accessions registered lower Na+/K+ ratio ranging  from 0.47 (GPL-1) to 0.61 (ML-6) and susceptible accessions was higher Na+/K+ which ranged from 3.06 (GTP-2 to 6.53 (GPL-4). The same was reverse in the stem and leaves in tolerant and susceptible accessions. Results indicated that the isolates belonged to four major phylogenetic group: low G+C Gram positive bacteria, Firmicutes, Proteobacteria and Bacteroidetes.
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