Research Article

Genetic Dissection of Sympatric Populations of Brown Planthopper, Nilaparvata lugens (Stål), Using DALP-PCR Molecular Markers

Figure 3

Patterns of relationships of the 11 populations revealed by the principal component analysis based on short primer DALP data. Proportion of the total variance explained by the first three principal components (PCs) is 78.31%: PC1 = 41.19%; PC2 = 27.42%; PC3 = 9.70% (Rice infesting populations of N. lugens: 1 = UPM1, 2 = TK1, 3 = MK1, 4 = PK1 and 5 = SB1; Grass infesting populations of N. lugens: 6 = UPM2, 7 = TK2, 8 = MK2, 9 = PK2, and 10 = SB2; An out group, N. bakeri, 11 = CH).
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