Identification of Tolerance in Soybean Varieties(lines)to Sclerotinia Sclerotiorum

In this study,95 soybean cultivars(lines)were selected from different areas of China and their tolerance to Sclerotinia sclerotiorum were identified by the determination of soluble pigment level in stems.The results showed the tolerance of tested materials varied significantly,11 soybean cultivars(lines)were moderate tolerant,account for 11.58% of all tested cultivars(lines),among which the tolerance intensity(TI)of 4 soybean cultivars(lines)were higher than 60%.In addition,8 moderate tolerant cultivars(lines)came from northeast area,account for 72.73% of all moderate tolerant accessions.It was proved that there were abundant tolerant soybean germplasm to Sclerotinia sclerotiorum in northeast China.