Table 4 Variations in seedling characteristics within and between cold tolerance (CT) and cold susceptible (CS) groups pooled from a diverse sorghum population planted across three planting dates in West Texas.

From: Seed-to-seed early-season cold resiliency in sorghum

Planting dates

FGP (%)

VGR

SBM (g)

SCC (µmol m−2)

CT

CS

CT

CS

CT

CS

CT

CS

Early

73* B

43 C

2.6* A

3.6 A

0.36* C

0.21 C

230* C

212 C

Mid

84* A

73 B

2.4* A

2.9 B

3.86* B

3.69 B

412 ns B

408 B

Standard

83 ns A

82 A

1.7* B

2.0 C

6.06* A

5.31 A

508* A

482 A

Mean

80

68

2.3

2.8

3.5

3.4

387

384

SE

0.75

1.57

0.04

0.06

0.14

.15

7.31

8.30

  1. FGP final germination percent, VGR early vigor rating, SBM 30DAP dry seedling biomass, SCC 30DAP chlorophyll content; ns: non-significant.
  2. *Significant (p ≤ 0.05) difference for assessed parameter between groups within planting date.
  3. ABC…: indicates significant difference (p ≤ 0.05) for assessed parameter within a group across planting dates.
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