Analysis of Direct and Indirect Selection and Indices in Bread Wheat (Triticum aestivum L.) Segregating Progeny

Table 5

Selection gain estimates (GS%) obtained from direct (diagonal) and indirect (of diagonal) selection in different bread wheat traits.

Traits

GS (%)

Total

Chl

HD

FLA

PH

SN

TKW

SW

GN

BIO

GY

HI

CHL

43.7

46.4

6.15 (2.69)

−0.07; (−0.09)

1.60; (0.30)

−3.25; (−2.11)

−4.06; (−18.62)

−0.49; (−0.19)

−4.12; (−28.31)

2.14; (0.52)

−7.14; (−83.30)

−1.10; (−4.63)

5.77; (2.09)

−4.58

HD

126.5

125.0

1.43; (0.63)

−1.13 (−1.43)

−7.74; (−1.44)

−4.69; (−3.05)

1.76; (8.09)

−2.35; (−0.88)

−10.98; (−75.43)

−4.95; (−1.21)

−12.33; (−143.86)

−3.76; (−15.84)

8.63; (3.13)

−36.11

FLA

18.6

19.4

−1.51; (−0.66)

0.54; (0.68)

4.30 (0.80)

−0.65; (−0.42)

−4.72; (−21.69)

−0.71; (−0.27)

8.76; (60.15)

14.00; (3.43)

6.40; (74.63)

8.04; (33.87)

0.31; (0.11)

34.75

PH

64.9

72.8

−1.30; (−0.57)

0.36; (0.45)

−4.57; (−0.85)

12.10 (7.86)

9.33; (42.85)

7.14; (2.68)

5.63; (38.69)

−15.79; (−3.86)

12.38; (144.36)

−1.23; (−5.17)

−11.08; (−4.01)

12.98

SN

459.2

508.9

−0.88; (−0.38)

0.10; (0.13)

−8.17; (−1.52)

4.58; (2.97)

10.84 (49.76)

4.22; (1.58)

5.52; (37.90)

−12.15; (−2.98)

8.15; (95.01)

1.14; (4.80)

−4.37; (1.58)

8.97

TKW

37.5

41.3

−0.70; (−0.30)

0.96; (1.22)

−4.77; (−0.89)

3.87; (2.52)

11.19; (51.38)

9.93 (3.73)

10.84; (74.42)

−14.46; (−3.54)

14.04; (163.76)

3.63; (15.31)

−7.41; (−2.68)

27.14

SW

686.8

652.5

−1.26; (−0.55)

0.40; (0.50)

−3.36; (−0.62)

−0.17; (−0.11)

−7.18; (−32.95)

3.59; (1.35)

−4.99 (−34.25)

−0.13; (−0.03)

−4.07; (−47.44)

−5.05; (−21.27)

−1.50; (−0.54)

−23.71

GN

24.5

28.4

2.05; (0.89)

0.53; (0.67)

3.85; (0.72)

−5.84; (−3.79)

−10.50; (−48.20)

−0.99; (−0.37)

0.70; (4.80)

15.86 (3.88)

−4.14; (−48.30)

3.65; (15.39)

6.87; (2.49)

12.04

BIO

1166.4

1309.9

−1.22; (−0.53)

0.63; (0.80)

−3.58; (−0.67)

7.93; (5.15)

7.44; (34.18)

6.15; (2.31)

7.36; (50.55)

−8.94; (−2.19)

12.30 (143.50)

2.74; (11.54)

−7.44; (−2.69)

23.39

GY

421.4

422.2

−2.07; (−0.90)

0.69; (0.87)

−1.48; (−0.27)

−0.95; (−0.62)

−6.49; (−29.82)

3.40; (1.27)

−1.38; (−9.45)

4.37; (1.07)

−2.47; (−28.84)

0.20 (0.85)

2.10; (0.76)

−4.08

HI

36.2

34.8

−0.91; (−0.40)

0.45; (0.57)

0.30; (0.06)

−2.08; (−1.35)

−5.74; (−26.35)

2.72; (1.02)

0.60; (4.09)

−0.80; (−0.19)

0.14; (1.63)

−3.54; (−14.90)

−3.81 (−1.38)

−12.67

CHL: chlorophyll content (Spad), HD: heading date (days), FLA: flag leaf area (cm²), PH: plant height (cm), SN: number of spikes, TKW: 1000-kernel weight (g), SW: spikes weight (g m⁻²), GN: number of grains per spike, BIO: above ground biomass (g m⁻²), GY: grain yield (g m⁻²), HI: harvest index (%), : trait mean value of the base population, and : trait mean value of the selected populations; values between parentheses correspond to the genetic gain in terms of percent mean for yield and yield-related traits.