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Background  Soil salinization and alkalization are among the major agricultural threats that affect crop productivity worldwide, which are increasing day by day with an alarming rate. In recent years, several halophytes have been investigated for their utilization in soil remediation and to decipher the mechanism of salt-tolerance in these high salt tolerant genetic repositories.  Suaeda salsa  is an annual halophytic herb in the family  Amaranthaceae , displaying high salt and alkali-resistance and having nutritive value. However, the fundamental biological characteristics of this valuable plant remain to be elucidated until today.    Results  In this study, we observed the morphology and development of  Suaeda salsa , including seed morphology, seed germination, plant morphology, and flower development. Using microscopy, we observed the male and female gametophyte developments of  Suaeda salsa . Also, chromosome behaviour during the meiosis of male gametophyte was studied. Eventually, the genome size of  Suaeda salsa  was estimated through flow cytometry using Arabidopsis as reference.    Conclusions  Our findings suggest that the male and female gametophyte developments of  Suaeda salsa  are similar to those of the model plant Arabidopsis, and the diploid  Suaeda salsa  contains nine pairs of chromosomes. The findings also indicate that the haploid genome of  Suaeda salsa  is approximately 437.5 MB. The observations and results discussed in this study will provide an insight into future research on  Suaeda salsa .

Studies on genome size estimation, chromosome number, gametophyte development and plant morphology of salt-tolerant halophyte Suaeda salsa