Table 3. Analysis of variance, mean values, and relative reduction (RR%) of traits under well-watered (control) versus drought conditions.
| Mean square and Significance | Mean trait values | ||||||
|---|---|---|---|---|---|---|---|
| Traits | Entries (E)a | Treatment (T) | E*T | CV (%) | Control | Drought | RR (%) |
| TTY (kg plant-1) | 0.031*** | 5.410*** | 0.009*** | 10.9 | 0.71 | 0.38 | 47 |
| MTY (kg plant-1) | 0.035*** | 5.816*** | 0.009*** | 11.2 | 0.68 | 0.34 | 51 |
| TTN (per plant) | 32.832*** | 47.125*** | 18.960*** | 13.2 | 13.62 | 14.6 | -7 |
| MTN (per plant) | 4.633*** | 176.940*** | 1.688** | 11.9 | 8.62 | 6.72 | 22 |
| ATW (g) | 456.550*** | 36022.670*** | 165.110*** | 14.3 | 55.16 | 28.05 | 49 |
| PHT (cm) | 230.093*** | 6108.974*** | 30.799*** | 5.6 | 57.67 | 46.51 | 19 |
| GC (%) | 246.740*** | 12159.120*** | 59.920** | 10.3 | 62.61 | 46.86 | 25 |
| STN (per plant) | 2.186*** | 0.004ns | 0.237ns | 21.6 | 2.95 | 2.96 | 0 |
| CC (SPAD reading) | 37.769*** | 1623.381*** | 3.432ns | 3.5 | 43.04 | 48.8 | -13 |
| CT(°C) | 2.616*** | 3186.997*** | 4.419*** | 5.1 | 16.9 | 24.96 | -48 |
TTY, total tuber yield; MTY, marketable tuber yield; TTN, total tuber number; MTN, marketable tuber number; ATW, average tuber weight; PHT, plant height; GC, groundcover; STN, stem number; CC, chlorophyll content; CT, canopy temperature; RR(%), percentage of relative reduction; CV(%), coefficient of variance.
*** P < 0.001
** P < 0.01
* P < 0.05
non-significant at P value 0.05.
aEntries here refer to sum of families, parents and checks used in this study