Heterosis studies in diallel crosses of maize for yield and yield attributing traits in maize ( Zea mays L.) over locations

Table 3: Heterobeltiosis for grain yield and yield components in maize

No. of desirable

S.No.

Character

Range

Best hybrid combinations

heterotic hybrids

Days to 50 per cent

BML-2782 X BML-5233-5, CM-211 X BML-

1

-20.52** to 5.24**

31

tasseling

5233-5 and BML-5233-5 X BML-2910

BML-2782 X BML-5233-5, CM-211 X BML-

2

Days to 50 per cent silking

-21.82** to 3.64

27

5233-5 and BML-5233-5 X BML-2910

BML-2782 X BML-5233-5, BML-5233-5 X

3

Day to maturity

-15.97** to 3.03

43

BML-2910 and CM-211 X BML-5233-5

CM-211 X BML-15, BML-2782 X BML-

4

Plant height (cm)

-16.69** to 54.60**

29

3044 and BML-15 X BML-2910

CM-211X BML-3044, CM-211 X BML-15

5

Ear height (cm)

-26.33** to 92.82**

24

and BML-2 X BML-3044

BML-7 X BML-3044, BML-6 X BML-7 and

6

Ear girth (cm)

-9.99* to 32.82**

26

BML-2486 X BML-6

BML-15 X BML-2910, BML-2486 X BML-2

7

Ear length (cm)

-20.72** to 59.14**

24

and BML-7 X BML-2910

Number of kernel rows

CM-211 X BML-5233-5, BML-2782 X BML-

8

-14.10** to 27.08**

9

per ear

5233-5 and BML-5233-5 X BML-2910

Number of kernels per

BML-6 X BML-3044, BML-15 X BML-2910

9

-29.33** to 83.84**

29

row

and BML-2486XBML-2

BML-5233-5 X BML-7, BML-15 X BML-

10

100-seed weight (g)

-22.67** to 53.79**

27

2910 and CM-211 X BML-5233-5

BML-15 X BML-2910, BML-6 X BML-3044

11

Grain yield per plant (g)

-38.94** to 205.13**

41

and BML-2782 X BML-7

Table 4. Standard heterosis for yield and yield components in maize

Range

No. desirable

Best hybrid Combinations

heterotic hybrids

Over

Over

S. No.

Characters

DHM-117

900 M Gold

DHM-

900M

Over DHM-117

900 M Gold

117

Gold

BML-2782

X

BML-2782 X BML- B M L - 5 2 3 3 - 5 ,

Days

to

50%

5233-5,

CM-211

X CM-211 X BML-

1

-17.66** to 2.69 -19.12 to 0.88

15

23

tasseling

BML-5233-5 and BML- 5233-5 and BML-

5233-5 X BML-2910

5233-5 X BML-

2910

BML-2782

X

BML-2782 X BML- B M L - 5 2 3 3 - 5 ,

2

5233-5,

CM-211

X CM-211 X BML-

Days to 50% silking -17.61** to 3.49 -18.56** to 2.30

13

18

BML-5233-5 and BML- 5233-5 and BML-

5233-5 X BML-2910

5233-5 X BML-

2910

275