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Assessment of opportunities to map pearl millet tolerance to salinity during germination and early seedling growth

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Mukhopadhyay, R.; Hash, C.T. ; Raj, A.G.B.,( A.G. Bhaskar Raj ) ; Kishor, P.B.K.,( P.B. Kavi Kishor )
Journal Title: 
Journal of SAT Agricultural Research
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Journal Issue: 
Journal Pagination: 
4 pp.
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Twenty-eight inbred lines of pearl millet (Pennisetum glaucum) obtained from ICRISAT, Patancheru, Andhra Pradesh, India, were evaluated for salt tolerance under laboratory conditions. Seeds were germinated on filter papers on Hoagland's solutions containing 0, 75, 100 or 150 mM NaCl. Fifteen seeds were germinated in each culture tube and the seedlings were allowed to grow for 10 days in the same nutrient solutions. The genotype x salinity interaction was significant for shoot and root lengths. Tift 23D2B1-P1-P5, ICMB 841-P3, P310-17-Bk, ICML 22 and ICMB 95333 were highly tolerant of salinity. Fifteen lines were moderately tolerant and 7 lines were sensitive. Large differences in germination salinity tolerance were detected between members of several pearl millet mapping population parental line pairs (including Tift 23D2B1 and WSIL-P8, ICMB 841-P3 and 863B-P2, and P310-17-Bk and W-504-1-P1 at 150 mM NaCl, and ICMP 451-P8 and 81B-P6, LGD 1-B-10 and ICMP 85417-P7, and PT 732B-P2 and P1449-2-P1 at 100 mM NaCl). Differences between mapping population parental line pairs were also detected for salinity tolerance of early seedling growth.

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