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Table 1 Morphological characterization of PvSPL2SRDX-overexpressing transgenic switchgrass plants

From: Switchgrass SBP-box transcription factors PvSPL1 and 2 function redundantly to initiate side tillers and affect biomass yield of energy crop

  Plant height (cm) Internode length (cm) Internode diameter (mm) Internode number Leaf blade length (cm) Leaf blade width (cm) Flowering time (day)
Control plants 136.7 ± 5.7 17.9 ± 0.8 2.31 ± 0.19 4–5 30.1 ± 3.3 0.79 ± 0.07 108 ± 4
TPvSPL2SRDX1 130.1 ± 4.4 18.8 ± 0.5 2.07 ± 0.33 4–5 28.3 ± 1.3 0.64 ± 0.10 107 ± 6
TPvSPL2SRDX2 137.9 ± 6.1 19.3 ± 2.0 1.93 ± 0.47 4–5 34.7 ± 3.7 0.74 ± 0.09 99 ± 2
TPvSPL2SRDX3 132.8 ± 7.3 17.1 ± 1.3 2.27 ± 0.09 4–5 37.2 ± 4.0 0.82 ± 0.13 100 ± 5
TPvSPL2SRDX4 83.2 ± 4.7* 13.6 ± 0.7* 2.43 ± 0.27 4–5 20.3 ± 1.7* 0.87 ± 0.17 106 ± 4
TPvSPL2SRDX5 78.7 ± 5.8* 11.7 ± 1.1* 2.70 ± 0.37 4–5 21.2 ± 1.5* 0.81 ± 0.07 103 ± 3
TPvSPL2SRDX6 81.5 ± 6.9* 12.9 ± 1.5* 2.38 ± 0.13 4–5 19.0 ± 2.3* 0.84 ± 0.05 107 ± 2
  1. Plant height of switchgrass was measured after 4-month growth in the greenhouse. The 4-month-old tillers were used to measure internode length (internode 3), internode diameter (internode 3), internode number, and leaf blade length and width. Five tillers were measured for each replicate. Control plants were produced with pANIC6B empty vector from the same batch of experiment. Values are mean ± SE (n = 3)
  2. * Significance corresponding to P < 0.05 (One-way ANOVA, Dunnett’s test)