Genetic Gain Trend in Yield and Advanced Selection of Yayo Coffee (Coffea arabica L.) Land Race Collection
Table 5
Annual genetic gain and response to selection in yield.
GA&R
Harvesting seasons of set-I
Harvesting seasons of set-II
2015
2016
2017
2018
2019
2020
Mean
2015
2016
2017
2018
2019
2020
Mean
R
87.03
34.07
43.69
196.76
223.40
86.49
233.37
−7.63
34.27
49.51
400.17
−38.49
664.19
209.30
GAM (%)
8.96
4.99
2.78
12.26
11.64
4.90
16.45
−1.59
6.30
4.11
21.39
−3.02
32.94
14.75
SD (kgha−1)
143.36
66.94
216.97
471.90
601.08
777.77
379.67
−29.07
107.23
165.65
739.23
90.80
977.79
340.51
∆GA
87.03
17.03
14.56
49.19
44.68
14.42
38.90
−7.63
17.13
16.50
100.04
−7.70
110.70
34.88
R-response to selection, SD- selection differential, R-response to selection, ∆GA- rate change of genetic gain, GA-genetic advance, GAM (%)-genetic mean advance.
