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Table 6 Calculation of specific combining ability (SCA) and heterosis (Better-parent) in different promising crosses for each trait under control condition

From: Genetic variability predicting breeding potential of upland cotton (Gossypium hirsutum L.) for high temperature tolerance

Traits

Crosses

SCA

Crosses

Heterosis

(Better-parent)

RCI

FH-466 × CIM-602

-15.20

FH-Lalazar × FH-326

-49.36

FH-Lalazar × FH-442

-8.03

NIAB-545 × FH-326

-47.03

CC

IR-NIBGE-8 × Silky-3

6.45

-

-

-

-

-

-

CT

FH-Noor × SLH-12

-1.86

FH-Lalazar × FH-326

-16.56

FH-Lalazar × Silky-3

-1.79

FH-458 × FH-326

-14.08

BR

FH-Noor × FH-442

11.60

FH-Lalazar × FH-326

14.07

FH-458 × CIM-602

6.10

FH-Lalazar × Silky-3

8.32

B/P

Weal-AG-Shakar × SLH-12

9.67

IR-NIBGE-8 × FH-326

26.92

NIAB-878 × Silky-3

8.18

NIAB-878 × Silky-3

21.51

BW

NIAB-878 × FH-326

0.51

NIAB-878 × FH-326

14.55

FH-466 × FH442

0.42

FH-466 × FH442

11.13

SI

FH-Noor × FH-442

0.90

NIAB-878 × FH-326

16.43

NIAB-878 × FH-326

0.74

FH-458 × FH-326

11.57

SB

IR-NIBGE-8 × SLH-12

4.58

IR-NIBGE-8 × SLH-12

22.23

FH-Lalazar × SLH-12

4.09

IR-NIBGE-8 × CIM-602

13.46

PH

FH-Noor × FH-326

18.89

Weal-AG-Shahkar × CIM-602

22.97

FH-Noor × FH-442

13.31

FH-Lalazar × CIM-602

6.12

SCY

Weal-AG-Shahkar × SLH-12

21.90

NIAB-878 × Silky-3

18.42

NIAB-878 × Silky-3

18.87

NIAB-878 × FH-326

5.58

  1. Note: RCI Relative cell injury, CC Chlorophyll contents, CT Canopy temperature, BR Boll retention, B/P Bolls per plant, BW Boll weight, SB Sympodial branches per plant, SI Seed index, PH Plant height, SCY Seed cotton yield/plant