Tehrim and Sajid (2011) found that they responded well on 75% MS salts as compared to 100%. However, 100% viability occurred in Accession No. 020017 (Dakh-1) when treated for 3 min with HgCl2, while minimum viability occurred in Accession No. 019967 and Dakh-4 when treated for 1min and 2min, respectively with HgCl2 (Table 2).