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Table 2 Mean comparison of QTL classes of grain yield (kg ha− 1) across F3 to F7 generations under reproductive-stage drought stress and irrigated non-stress control conditions in IR64-Sub1 background at IRRI, Philippines

From: Marker-assisted selection strategy to pyramid two or more QTLs for quantitative trait-grain yield under drought

QTL class

QTL

2013WS

2013WS

2014DS

2014DS

2014WS

2015DS

2015DS

2015WS

2015WS

  

NS

RS

NS

RS

NS

NS

RS

NS

RS

  

F3

F3

F4

F4

F5

F6

F6

F7

F7

 

Population size

  

467

467

194

194

64

64

64

18

18

A

Sub1+ qDTY 1.1  + qDTY 1.2  + qDTY 12.1

4137 ac

3621 cde

7553 bdf

584 g

B

Sub1+ qDTY 1.1  + qDTY 1.2  + qDTY 2.2  + qDTY 12.1

3640 ac

2605 a

7968 bdf

196 abc

C

Sub1+ qDTY 1.1  + qDTY 1.2  + qDTY 2.2

4986 c

2734 ab

5996 abc

377def

D

Sub1+ qDTY 1.1  + qDTY 1.2

4418 cd

3054 abc

7709 cef

232 abc

3585 ab

5192 a

477 bcd

E

Sub1 + qDTY 1.1  + qDTY 2.2  + qDTY 12.1

3589 ac

2634 abc

273 be

 

3976 a

420 bce

F

Sub1 + qDTY 1.1  + qDTY 2.2

4953 ac

3169 abe

7637 bdf

367 ceg

3347 ab

5120 a

592 bf

4105 a

188 a

G

Sub1 + qDTY 1.1

4413 ac

2677 ab

8224 cef

410 eg

H

Sub1 + qDTY 1.2 + qDTY 12.1

4001 ac

2963 abc

6660 abe

245 be

5468 a

252 ab

I

Sub1 + qDTY 1.2 + qDTY 2.2  + qDTY 12.1

5370 cb

3352 abe

8790 bf

259 be

J

Sub1 + qDTY 12.1

4380 cd

2690 abd

6117 ab

189 bc

3066 ab

5125 a

372 abc

3997 a

64 a

K

Sub1 + qDTY 2.2  + qDTY 12.1

4395 cd

3130 bc

6512 ab

308 ae

2592 a

5026 a

459 bc

3762 a

186 a

L

Sub1 + qDTY 2.2

4252 cd

3767 e

7893 cf

223 abc

M

Sub1 + qDTY 2.3  + qDTY 12.1

3168 ac

3084 abe

8532 cef

194 be

N

Sub1 + qDTY 2.3

3145 ab

2602 a

7080 bde

244 abcd

O

Sub1 + qDTY 3.2  + qDTY 12.1

3670 ac

2746 abd

7145 abf

263 bef

P

Sub1 + qDTY 3.2  + qDTY 2.2  + qDTY 12.1

3109 ac

2728 abd

7798 bdf

197 be

Q

Sub1 + qDTY 3.2  + qDTY 2.2

3055abd

2526 a

6441 ab

220 abcd

2381 a

4398 a

761 f

R

Sub1 + qDTY 3.2  + qDTY 2.3  + qDTY 12.1

2845 ac

2931 abc

6469 abc

304 abcd

2293 a

4570 a

719 def

3883 a

275 a

S

Sub1 + qDTY 3.2  + qDTY 2.3

1688 a

2891 abe

5319 a

304 bef

4727 a

255 ab

T

Sub1 + qDTY 3.2

3444 ac

3427 be

6230 ad

124 b

X

Parent

3620 ac

2305 a

6066 abf

87 abc

3139 ab

5099 a

0a

3849 a

18 a

Trial mean

3853

2998

7181

277

3024

4870

862

3943

128

 

F- value

1.59

2.88

2.92

3.22

2.83

2.26

4.32

1.54

1.53

 

p-value

0.2956

0.006

0.0006

0.0011

0.0363

0.404

0.0004

0.5566

0.5585

  1. The letter display are QTL class labels ordered by mean grain yield of QTL class. Means followed by the same letter (within a column) are not significantly different, DS dry season, WS wet season, NS non-stress, RS reproductive-stage drought stress, X recipient parent (no QTL)