Abstract:

【Objective】 Whitefly (Bemisia tabaci Gennadius) is one kind of serious agricultural pests in the world and is harmful to soybean. It is important to understand the relationship between whitefly resistance and agronomic traits of soybean for whitefly resistant soybean breeding. 【Method】 The number of whitefly nymphs per leaf and per plant of 213 Chinese and foreign soybean germplasms were identified in experimental farm of Shandong Academy of Agricultural Sciences in 2004. Meanwhile the agronomic traits including stem termination, seed coat color, cotyledon color, plant height, stem nods number, stem diameter, branch number, pod number, seed number, seed weight per plant, 100-seed-weight, pod length, pod width, seed protein content and fat content of these germplasm were identified. And the relationship between the number of whitefly nymphs and agronomic traits were analyzed with SPSS 16.0. 【Result】 The Mean of Whitefly Per Leaf(MWPL) of soybean varieties with different stem termination were significantly different. The order of MWPL was determinate varieties ＞ semi-determinate ＞ indeterminate. Correlation between MWPL and stem diameter was significant at 0.01 level. Correlation between MWPL and seed weight per plant and seed protein content were significant at 0.05 level. The Pearson Correlations were 0.282**, 0.165*, and 0.166*. And the correlation between MWPL and seed coat color, cotyledon color, branch number, seeds fat content, pod length, and pod width were insignificant. 【Conclusion】 The resistance to whitefly was affected by agronomic and quality traits of soybean.

Key words: soybean, whitefly, resistance, agronomic traits, quality