Response of Rice Genotypes to Weed Competition in Dry Direct-Seeded Rice in India

Table 4

Correlation among different traits in weed-free conditions. The critical value of 𝑟 was 0.40 at 5% level of significance.

Traits

GY

Pan

Gr

TGW

SS

Ht

CI

RYL

WP

LAI

VS

RW

GY

Pan

0.77

Gr

−0.06

−0.30

TGW

0.13

−0.03

−0.16

SS

−0.36

−0.41

−0.09

−0.39

Ht

−0.05

−0.24

0.11

0.77

−0.28

CI

0.25

0.35

−0.01

0.20

−0.56

0.09

RYL

−0.08

−0.21

−0.02

−0.41

0.44

−0.22

−0.69

WP

−0.02

−0.19

0.28

−0.33

0.32

−0.13

−0.78

0.65

LAI

0.39

0.32

0.05

0.62

−0.66

0.62

0.60

−0.39

−0.40

VS

0.01

−0.04

−0.09

0.60

−0.38

0.59

0.35

−0.30

−0.17

0.72

RW

0.32

0.45

−0.15

0.41

−0.49

0.10

0.58

−0.64

−0.56

0.48

0.37

RV

0.32

0.45

−0.15

0.41

−0.49

0.10

0.58

−0.64

−0.56

0.48

0.37

1.00

GY, grain yield; LAI, leaf area index at 28 DAS; Ht, height; RW, root weight; RV, root volume; Pan, panicle m⁻²; Gr, filled grains panicle⁻¹; TGW, 1000-grain weight; SS, spikelet sterility; CI, weed competitive index; WP; weed biomass; and RYL, relative yield loss.