Agronomic performance and genetic parameters of soybean (Glycine max (L.) Merr.) Lines in tidal swamp land

This study aimed to find out the agronomic performance and genetic parameters of soybean lines in tidal swampland. A total of 100 soybean lines were planted in the tidal swampland using a randomized complete block design. The results showed that the broad genetic diversity was reflected in plant height (HGT), number of branches (BRC), number of productive nodes (NOD). Number of filled pods (POF), number of unfilled pods (POU), 100-seed weight (SEW), and seed yield (YLD). Those seven characteristics also had high heritability, except for YLD. Phenotypic correlations were found in all characters except for SEW with POF, POU, and YLD, while genotypic correlations were only found between NOD with BRC and POF, and YLD with POF. The moderate heritability of YLD results in measurement bias when used as the single selection criterion. Therefore, it is necessary to have other characters with significant genetic correlation with YLD as supporting characters in the selection of soybean lines for high YLD. POF as a character that had a significant correlation with YLD can be used to select soybean lines for high YLD