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Example1:  An initial varietal trial was conducted to study the performance of 21 new strains of Toria vis-a-vis 3 checks using an alpha design at Shillongani, Jagdalpur and Kanke with three replications at each of the locations. The seed yield in kg/ha was recorded. The details of strains, design adopted and data obtained are given as under.

Treatment 

Treatment No.

 

Treatment 

Treatment No.

 

Treatment 

Treatment No.

RAU DT-01-03

1

TK-06-1

9

RH-0304

17

RAU DT-01-02

2

TK-06-2

10

TH-0302

18

BAUSM-92-24

3

TL-2027

11

JMT-05

19

RGN 186

4

TL-2013

12

PT-303(NC)

20

EJ-17

5

JMT-02-6

13

Zonal Check

21

NPJ-112

6

NDT 05-5

14

PTC-99-14

22

VLT-4

7

NDRE 200216

15

JD-6(check)

23

RRN-612

8

PT-2004-3

16

ORT 17-6-16

24

 

Note: strains of toria in boldface are the three checks, i.e., treatment numbers 20, 21 and 23 are checks.

The data for each of the locations is given below.

 

Location: Shillongani

Replication 1

Block 1

1 (579)

5 (532)

9 (579)

13 (463)

17 (694)

21 (671)

Block 2

2 (1157)

6 (880)

10 (509)

14 (856)

18 (625)

22 (532)

Block 3

3 (926)

7 (347)

11 (694)

15 (648)

19 (579)

23 (810)

Block 4

4 (694)

8 (694)

12 (347)

16 (810)

20 (926)

24 (856)

Replication 2

Block 1

1 (463)

6 (810)

11 (440)

16 (625)

19 (417)

22 (579)

Block 2

2 (810)

7 (417)

12 (463)

13 (579)

20 (880)

23 (810)

Block 3

3 (856)

8 (694)

9 (810)

14 (741)

17 (926)

24 (741)

Block 4

4 (463)

5 (694)

10 (741)

15 (694)

18 (810)

21 (810)

Replication 3

Block 1

1 (579)

7 (370)

12 (347)

15 (417)

18 (463)

24 (880)

Block 2

2 (694)

8 (833)

9 (810)

16 (856)

19 (463)

21 (833)

Block 3

3 (1042)

5 (1065)

10 (579)

13 (810)

20 (810)

22 (579)

Block 4

4 (856)

6 (995)

11 (463)

14 (810)

17 (463)

23 (926)

 

Location: Jagdalpur

Replication 1

Block 1

1 (470.9)

5 (609.4)

9 (692.5)

13 (554.0)

17 (415.5)

21 (831.0)

Block 2

2 (277.0)

6 (304.7)

10 (637.1)

14 (637.1)

18 (409.4)

22 (831.0)

Block 3

3 (831.0)

7 (221.6)

11 (692.5)

15 (637.5)

19 (554.0)

23 (554.0)

Block 4

4 (692.5)

8 (360.1)

12 (609.4)

16 (692.5)

20 (831.0)

24 (1108.0)

Replication 2

Block 1

1 (554.0)

6 (332.4)

11 (831.0)

16 (692.5)

19 (554.0)

22 (696.0)

Block 2

2 (249.3)

7 (221.6)

12 (775.6)

13 (554.0)

20 (969.5)

23 (969.5)

Block 3

3 (969.5)

8 (387.8)

9 (831.0)

14 (675.6)

17 (470.9)

24 (1246.0)

Block 4

4 (637.1)

5 (775.6)

10 (415.5)

15 (692.5)

18 (387.8)

21 (914.1)

Replication 3

Block 1

1 (554.0)

7 (277.0)

12 (554.0)

15 (692.5)

18 (415.5)

24 (886.4)

Block 2

2 (332.4)

8 (415.5)

9 (692.5)

16 (692.5)

19 (554.0)

21 (692.5)

Block 3

3 (831.0)

5 (775.6)

10 (637.1)

13 (692.5)

20 (1052.0)

22 (831.0)

Block 4

4 (664.8)

6 (304.7)

11 (554.0)

14 (554.0)

17 (415.5)

23 (692.5)

 

 

  Location: Kanke

Replication 1

Block 1

1 (556)

5 (729)

9 (609)

13 (521)

17 (671)

21 (486)

Block 2

2 (498)

6 (602)

10 (553)

14 (683)

18 (752)

22 (755)

Block 3

3 (748)

7 (475)

11 (394)

15 (646)

19 (465)

23 (625)

Block 4

4 (597)

8 (532)

12 (440)

16 (519)

20 (880)

24 (660)

Replication 2

Block 1

1 (523)

6 (741)

11 (347)

16 (567)

19 (486)

22 (808)

Block 2

2 (590)

7 (694)

12 (498)

13 (826)

20 (579)

23 (613)

Block 3

3 (683)

8 (706)

9 (539)

14 (595)

17 (683)

24 (664)

Block 4

4 (660)

5 (660)

10 (556)

15 (544)

18 (789)

21 (535)

Replication 3

Block 1

1 (602)

7 (602)

12 (660)

15 (556)

18 (671)

24 (671)

Block 2

2 (463)

8 (544)

9 (509)

16 (475)

19 (602)

21 (556)

Block 3

3 (665)

5 (826)

10 (752)

13 (579)

20 (625)

22 (903)

Block 4

4 (810)

6 (856)

11 (532)

14 (671)

17 (597)

23 (856)

 MS-EXCEL DATA FILE

Figures in the parenthesis gives the seed yield in kg/ha

  1. Perform the analysis of data for each of the locations separately.
  2. Test the homogeneity of error variances using Bartlett’s Chi-square test.
  3. Apply Aitken’s transformation, if error variances are heterogeneous.
  4. Perform the combined analysis of the above data set considering the locations as fixed effects.   /*this is useful for artificially created environments*/
  5. Perform the combined analysis of the above data set considering the locations as random effects.

  6. Prepare a Site Regression (SREG) or GGE Biplot.  

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For exposure on SAS, SPSS, 
MINITAB, SYSTAT and  
MS-EXCEL for analysis of data from designed experiments:

 Please see Module I of Electronic Book II: Advances in Data Analytical Techniques

available at Design Resources Server (www.iasri.res.in/design)