Table 4: Contribution of the quantitative traits to each principal component (%) for the genetic variability of 321 lowland rice genotypes and the corresponding squared cosines directing which trait is well linked with each principal component.

Quantitative traits

Contribution in % (Squared cosine)

PC1

PC2

PC3

DH

25.76(0.67)

1.40(0.03)

15.12(0.16)

DM

22.33(0.58)

0.80(0.01)

20.48(0.22)

PH

20.72(0.54)

6.73(0.12)

9.49(0.10)

PL

6.30(0.16)

24.73(0.45)

13.44(0.15)

NFG

1.64(0.04)

42.26(0.77)

0.65(0.01)

NUFG

0.44(0.01)

23.81(.44)

33.37(0.36)

TSW

22.81(0.59)

0.27(0.01)

7.45(0.38)

Where: DH: Days to Heading; DM: Days to Maturity; PH: Plant Height; PL: Panicle Length; NFG: Number of Filled Grains; NUFG: Number of Unfilled Grains; TSW: 1000 Seed Weight; PC: Principal Component; %: Percentage