Table 1 Descriptive statistics of physiological, shoot, and root traits of 64 soybean genotypes under control (CNT) and drought stress (DS).
From: Resilience of soybean genotypes to drought stress during the early vegetative stage
Trait | Treatment (T) | Genotype (G) | G x T | CNT | DS | Change (%) | Correlation |
|---|---|---|---|---|---|---|---|
(CNT vs. DS) | |||||||
Chlorophyll index (CI, SPAD) | *** | * | ns | 34.17 | 38.85 | 13.7 | 0.14 ns |
Chlorophyll fluorescence (Fv′/Fm′) | *** | ns | ns | 0.69 | 0.59 | − 15.3 | − 0.05 ns |
Canopy temperature (CT, oC) | *** | ns | ns | 30.00 | 33.16 | 10.5 | 0.20 ns |
Plant height (PH, cm) | *** | *** | ns | 21.23 | 16.97 | − 20.1 | 0.69*** |
Nodes number (NN, no. plant−1) | *** | *** | ns | 4.96 | 4.35 | -12.3 | 0.24 ns |
Leaf area (LA, cm2) | *** | *** | ** | 511.63 | 322.83 | − 36.9 | 0.34** |
Leaf weight (LWT, g plant−1) | *** | *** | ns | 1.38 | 1.21 | − 12.6 | 0.58*** |
Shoot weight (SWT, g plant−1) | *** | *** | ns | 0.94 | 0.76 | − 18.9 | 0.51*** |
Total dry weight (TDM, g plant−1) | ns | *** | ns | 2.72 | 2.61 | − 3.9 | 0.58*** |
Root forks (RF, no. plant−1) | *** | ns | ns | 22,647.42 | 23,115.77 | 2.1 | 0.54*** |
Root tips (RT, no. plant−1) | *** | ns | ns | 8543.77 | 6866.50 | − 19.6 | 0.09 ns |
Root crossing (RC, no. plant−1) | *** | ** | ns | 2730.39 | 2268.66 | − 16.9 | 0.53*** |
Root diameter (RD, cm) | *** | *** | ns | 0.41 | 0.44 | 8.4 | 0.32** |
Total root length (TRL, cm) | ns | ** | ns | 4054.24 | 4004.29 | − 1.2 | 0.46*** |
Root volume (RV, cm3 plant−1) | *** | *** | ns | 5.47 | 6.27 | 14.5 | 0.42*** |
Root surface area (RSA, cm2 plant−1) | * | *** | ns | 526.50 | 559.98 | 6.4 | 0.44*** |
Root weight (RWT, g plant−1) | *** | *** | ns | 0.40 | 0.64 | 60.6 | 0.61*** |
Root to shoot (RS, ratio) | *** | *** | ns | 0.43 | 0.87 | 101.4 | 0.48*** |
