EFFECT OF SALINITY (NaCl) ON GERMINATION AND SEEDLING GROWTH OF MUNGBEAN (Vigna radiata L.)

An experiment was conducted at the Agronomy Laboratory of Agrotechnology Discipline, Khulna University, Bangladesh to investigate the effect of salinity on germination and seedling growth of mungbean genotypes. The experiment comprised of two factors Viz. genotypes (BARI Mung-6, Binamoog-5, Binamoog-8 and Tila Mung) and salinity levels (0 dSm^-1, 4 dSm^-1, 8 dSm^-1, 12 dSm^-1 and 16 dSm^-1. Among the seed germination parameters, no significant genotypic difference observed at 0 dSm^-1 and 4 dSm^-1. At 12 dSm^-1, the highest germination capacity (93%) and germination percentage (94%) was found in Binamoog-8 followed by BARI Mung-6 (91% and 92% respectively) and the lowest value was in Tila mung (73% and 76% respectively). At 16 dSm^-1, BARI Mung-6 showed the highest germination capacity (95%) and germination percentage (95%) and Tila mung showed the lowest value (51% and 52% respectively). Among the growth parameters, the highest shoot length (2.8 cm), seedling vigor index (488.26), seedling dry weight (45.9 mg) found in BARI Mung-6 at 16 dSm^-1 while the lowest in Tila mung (1.56 cm, 180.93 and 32.52 mg respectively). Regarding all the germination and seedling growth parameters, BARI Mung-6 was found superior than other genotypes.

Keywords: Mungbean, NaCl, Germination and Seedling growth

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