PERFORMANCE OF DIFFERENT BRASSICA SPECIES UNDER CADMIUM STRESS

Abstract

Cadmium is a significant limiting factor in the production of oilseed crop in industrial area. A pot experiment was conducted in the Sher-e-Bangla Agricultural University from November 2019 to February 2020 to observe the performances of three Brassica species (B. oleracea, B. campestris, and B. juncea) seeds exposed to two levels of cadmium stress; mild and severe stress (2mM and 4mM CdCl ) in a completely randomized design with three replications. The results revealed that cadmium had a significant negative impact on plant height, leaf number, siliqua length, seed per siliqua, SPAD value and seed weight of all tested Brassica species resulting in yield loss. Mild cadmium stress decreased yield of B. oleraceae (BARI Sharisha 17), B. campestris (BARI Sharisha 14) and B. juncea (BARI Sharisha 16) by 9.52%, 17.53% and 13.52%, respectively. Furthermore, severe cadmim stress decreased yield of B. oleraceae, B. campestris and B. juncea by 46.26%, 39.61% and 31.88%, respectively. So, under mild stress, BARI Sarisha 17 (B. oleraceae) is the best variety, while under severe stress conditions, BARI Sarisha 16 (B. juncea) is the best variety.