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Table 6 Genetic components of variance for yield and fibre quality traits in G. arboreum

From: Combining ability and gene action studies for yield and fibre traits in Gossypium arboreum using Griffings numerical and Haymans graphical approach

Components

DFF

PH

NMB/P

NSB/P

NB/P

NL/B

DBB

BW

NS/B

SCY/P

GOT

SI

LI

UHML

UI

Str

EL

Mic

D (Additive effect)

3.781

244.916

0.537

3.724

4.146

0.165

13.389

0.056

2.084

4.310

1.287

0.346

0.038

2.108

0.346

1.433

0.033

0.144

F (Mean Fr over arrays)

2.368

193.682

0.881

5.409

5.246

0.232

15.154

0.046

0.032

-8.041

6.521

0.790

0.042

0.573

-0.184

-0.301

0.030

-0.059

H1 (Dominance effect)

15.404

890.493

1.001

25.848

33.541

0.219

26.040

0.198

29.012

180.663

73.297

2.916

0.244

3.487

0.343

5.691

0.103

0.190

H2

13.988

734.382

0.578

21.147

27.437

0.132

21.739

0.172

24.846

160.971

64.829

2.089

0.197

3.083

0.367

4.386

0.067

0.167

h2

0.171

2.965

0.004

2.052

4.738

0.113

6.735

0.050

2.118

3.862

12.357

0.253

0.212

-0.130

0.432

0.032

0.012

0.023

E (Environ. comp.)

0.908

5.063

0.001

0.162

0.228

0.004

2.781

0.001

0.151

1.171

0.927

0.030

0.006

0.258

0.745

0.169

0.006

0.006

vH1/D

2.018

1.907

1.365

0.934

0.844

1.151

1.395

1.890

0.731

6.474

7.546

2.903

2.527

1.286

1.997

0.993

0.766

1.149

H2/4H1

0.227

0.206

0.144

0.205

0.205

0.150

0.209

0.217

0.214

0.223

0.221

0.179

0.202

0.221

0.268

0.193

0.163

0.220

V4dh1 + F/v4DH1-F

1.367

1.523

4.015

1.761

1.572

4.142

2.366

1.567

1.004

0.748

2.011

2.296

1.557

1.236

0.578

0.900

1.710

0.697

h2/H2

0.012

0.004

0.008

0.097

0.173

0.856

0.310

0.290

0.085

0.024

0.191

0.121

1.079

-0.042

1.176

0.007

0.185

0.138

h2 (ns)

0.375

0.626

0.153

0.458

0.383

0.140

0.571

0.653

0.210

0.074

0.064

0.432

0.372

0.566

0.099

0.389

0.503

0.583

t2 values

5.600

0.502

0.832

3.949

0.150

0.079

1.296

0.791

4.240

4.725

4.450

7.312

1.269

0.193

6.925

0.672

1.067

3.070

a (intercept)

0.376

98.760

-0.109

0.136

-1.933

-0.015

-4.234

-0.002

-1.365

-8.047

0.799

0.062

-0.022

-0.067

0.333

0.222

-0.010

0.024

b (slope)

0.227

-0.100

0.955

0.065

0.339

1.009

0.989

0.354

0.309

0.254

-0.093

-0.129

0.499

0.726

0.015

0.306

0.655

0.629

standard error

0.175

0.351

0.500

0.207

0.383

0.091

0.579

0.296

0.065

0.067

0.023

0.162

0.235

0.251

0.168

0.313

0.199

0.148

(b-0)/SE

0.227*

-0.1*

0.955*

0.065*

0.339*

1.009*

0.989*

0.354*

0.309*

0.254*

-0.093*

-0.129*

0.499*

0.726*

0.015*

0.306*

0.655*

0.629*

  1. D Component of variation due to additive effect of gene, H1 Component of variation due to dominant effect of gene, H2 Proportion of dominance variance due to positive and negative effect of gene
  2. h2 Dominance effect expressed as the algebraic sum over all loci in heterozygous phase in all crosses, F Mean of Fr over arrays, Fr Covariance of additive and non-additive effect in the rth array
  3. Average degree of dominance = (H1/D)1/2; Proportion of genes with positive and negative effect in the parents = H2/4h1; V4dh1 + F/V4dh1-F -Proportion of dominance and recessive egnes in the parents
  4. h2 (ns) Heritability in narrow-sense
  5. *significant at 5%,
  6. **significant at 1%
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Journal of Cotton Research

ISSN: 2523-3254

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