Table 4.
Mean values, genotypic coefficients of variation (GCV), phenotypic coefficients of variation (PCV) and broad-sense heritability (h2) of studied traits measured from one-hundred accessions of Poa pratensis evaluated in non-stress and drought stress environments during years 2018 and 2019.
| Trait | Mean ± SE (2018) | Non-stress condition | |||||||
|---|---|---|---|---|---|---|---|---|---|
| GCV (%) | PCV (%) | h2 ± SE | |||||||
| Non-stress condition | Drought stress | Difference (%) | 2018 | 2019 | 2018 | 2019 | 2018 | 2019 | |
| TPC | 65.12 ± 1.18 | 75.00 ± 1.49 | 13.18 | 25.54 | 27.13 | 25.75 | 27.26 | 0.9833 ± 0.00167 | 0.9905 ± 0.00095 |
| TFC | 201.54 ± 4.05 | 229.35 ± 5.36 | 12.13 | 28.32 | 31.89 | 28.48 | 31.98 | 0.9887 ± 0.00113 | 0.9940 ± 0.00060 |
| FLv | 63.47 ± 1.40 | 73.68 ± 1.55 | 13.86 | 31.15 | 26.73 | 31.18 | 26.77 | 0.9978 ± 0.00022 | 0.9967 ± 0.00033 |
| Anti | 52.16 ± 0.81 | 56.95 ± 0.88 | 8.41 | 22.04 | 20.50 | 22.10 | 20.56 | 0.9948 ± 0.00052 | 0.9938 ± 0.00062 |
| Antho | 34.46 ± 0.55 | 38.85 ± 0.62 | 11.29 | 22.56 | 20.96 | 22.77 | 21.22 | 0.9815 ± 0.00186 | 0.9754 ± 0.00248 |
| FFY | 704.91 ± 11.08 | 492.53 ± 6.33 | -43.12 | 19.62 | 17.54 | 22.26 | 18.23 | 0.7770 ± 0.02497 | 0.9258 ± 0.00767 |
| FDY | 349.11 ± 6.06 | 280.70 ± 4.76 | -24.37 | 19.97 | 19.35 | 24.61 | 20.19 | 0.6583 ± 0.04101 | 0.9188 ± 0.00842 |
| Trait | Mean ± SE (2019) | Drought stress | |||||||
|---|---|---|---|---|---|---|---|---|---|
| GCV (%) | PCV (%) | h2 ± SE | |||||||
| Non-stress condition | Drought stress | Difference (%) | 2018 | 2019 | 2018 | 2019 | 2018 | 2019 | |
| TPC | 82.86 ± 1.59 | 100.11 ± 1.59 | 17.23 | 27.99 | 22.48 | 28.07 | 22.53 | 0.9947 ± 0.00053 | 0.9948 ± 0.00052 |
| TFC | 237.92 ± 3.37 | 262.12 ± 5.58 | 9.23 | 33.07 | 30.12 | 33.13 | 30.17 | 0.9967 ± 0.00033 | 0.9967 ± 0.00033 |
| FLv | 78.61 ± 1.48 | 87.08 ± 1.59 | 9.73 | 29.70 | 25.86 | 29.73 | 25.90 | 0.9977 ± 0.00023 | 0.9970 ± 0.00030 |
| Anti | 61.30 ± 0.89 | 67.47 ± 0.97 | 9.15 | 21.77 | 20.32 | 21.90 | 20.41 | 0.9880 ± 0.00120 | 0.9920 ± 0.00080 |
| Antho | 41.91 ± 0.63 | 46.53 ± 0.69 | 9.92 | 22.64 | 20.96 | 22.78 | 21.14 | 0.9872 ± 0.00128 | 0.9835 ± 0.00166 |
| FFY | 1496.05 ± 19.24 | 1026.22 ± 10.59 | − 45.78 | 14.25 | 13.67 | 18.21 | 14.62 | 0.6122 ± 0.04787 | 0.8733 ± 0.01346 |
| FDY | 804.37 ± 11.46 | 621.29 ± 7.73 | − 29.47 | 19.48 | 16.43 | 24.01 | 17.64 | 0.6582 ± 0.04103 | 0.8680 ± 0.01406 |
TPC, total phenol content; TFC, total flavonoid content; FLv, flavanone; Anti, antioxidant activity; Antho, anthocyanin; FFY, forage fresh yield; FDY, forage dry weight; SE, standard error of the mean.