Molecular Plant Breeding 2016, Vol.7, No.19, 1
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1.4 Improvement based on index score
Successful hybrid breeding programme depends on judicious selection of suitable parents with important traits. So,
it is essential to identify the diverse genotypes for best character combination which may give the better heterotic
response for yield improvement. Utilizing the best selection index (I
345
) (fruit weight+ fruits/plant+ yield/plant),
the relative genetic score of each genotype was determined (Table 4). It was found that the genotypes Surjomukhi,
Bindumorich, Golmorich and BARI morich -2 were superior among all the 30 genotypes having excellent
combination of attributes. Alam
et al. (2014), Singh et al. (2013), Gupta et al. (2012) and Ferdous et al. (2010)
selected best genotypes based on selection score.
Table 4 Selection of genotypes based on the best selection index (X3 + X4 + X5) with mean value and relative genetic score
Genotype code
Fruit weight (gm)
Fruits/plant
Yield/plant (gm)
Selection score
G1
1.62
116.50
188.58
272.06
G2
1.94
114.50
224.12
302.23
G3
2.63
82.00
215.64
267.14
G4
1.52
74.50
112.33
167.38
G5
1.70
144.00
243.21
344.77
G6
9.11
33.50
307.41
315.42
G7
3.81
97.50
371.83
420.85
G8
2.42
138.00
334.22
421.14
G9
0.93
86.50
79.44
147.95
G10
2.63
88.50
233.46
288.63
G11
1.88
64.50
121.21
166.99
G12
1.37
83.50
114.45
176.97
G13
2.74
111.00
302.38
369.65
G14
2.92
70.50
202.67
245.95
G15
1.37
93.50
125.97
195.97
G16
1.36
107.50
147.24
227.13
G17
1.17
69.00
81.01
134.28
G18
1.85
117.00
214.99
296.22
G19
3.25
125.00
406.88
475.25
G20
2.05
87.00
175.22
234.87
G21
1.71
130.00
221.49
313.22
G22
2.03
80.50
163.58
218.82
G23
1.87
82.00
154.38
211.76
G24
3.68
93.00
345.86
393.69
G25
3.49
177.00
617.13
707.58
G26
1.44
106.00
156.14
233.81
G27
1.77
258.00
459.47
636.79
G28
2.33
139.00
321.55
410.68
G29
2.75
180.00
492.51
598.78
G30
1.18
59.00
69.38
115.20
