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Table 1 Yield and yield-related traits of CSA-Pi9 and CSA plants grown under various paddy field conditions

From: Development of a Temperate Climate-Adapted indica Multi-stress Tolerant Rice Variety by Pyramiding Quantitative Trait Loci

Field location1 Variety Generation Growth period (DAT)2 Flowering period (DAT)2 Culm length (cm)3 Panicle length (cm)3 Panicle number3 Spikelet number3 Fertility (%)3 Hundred-grain weight (g)3 Grain yield4
Field A (2018) CSA 146 64 90.67 ± 0.67 27.50 ± 0.50 9.67 ± 0.33 145.78 ± 6.41 89.03 ± 0.93 2.56 ± 0.03 25.49 ± 2.03
  CSA-Pi9 BC2F5 146 64 81.00 ± 1.73* 27.17 ± 0.60 11.00 ± 1.53 187.22 ± 9.02** 90.15 ± 1.34*** 1.99 ± 0.01*** 36.40 ± 0.53*
Field A (2019) CSA 135 91 75.45 ± 0.57 25.02 ± 0.50 9.72 ± 0.47 141.56 ± 3.35 95.40 ± 0.76 2.66 ± 0.01 30.75 ± 1.22
  CSA-Pi9 BC2F7 135 76 66.83 ± 1.20*** 25.40 ± 0.37 8.50 ± 0.47 182.67 ± 2.71*** 93.64 ± 0.55 2.58 ± 0.01** 27.95 ± 1.43
Field B CSA 128 92 73.40 ± 1.21 23.67 ± 1.20 15.33 ± 0.33 129.13 ± 3.11 65.95 ± 1.80 2.34 ± 0.02 32.63 ± 3.70
  CSA-Pi9 BC2F7 128 77 69.57 ± 1.07** 22.83 ± 0.48 14.67 ± 0.88 122.75 ± 5.39 93.29 ± 1.73*** 2.19 ± 0.03* 32.00 ± 3.43
Field C CSA n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a.
  CSA-Pi9 BC2F7 141 91 n.d. n.d. n.d. n.d. n.d. 1.86 ± 0.04 18.56
  1. 1Field A: normal irrigation condition; Field B: normal irrigation condition in reclaimed region; Field C: high salinity condition in reclaimed region. Field locations are described in the “Materials and Methods” section
  2. 2Data represent the mean of five measurements. DAT: days after transplanting; n.a.: not applicable (all plants dead)
  3. 3Data represent mean ± standard error (SE; n = 5). Asterisks indicate statistically significant differences between CSA and CSA-Pi9 in each field (*P < 0.05, **P < 0.01, ***P < 0.001; Student's t-test). n.a.: not applicable (all plants died); n.d.: no data
  4. 4All values in this column represent grain yield per plant, estimated in grams (mean ± SE; n = 5; *P < 0.05; Student's t-test), except CSA-Pi9 in field C, which was harvested in bulk and total grain weight (334 g) was divided into the number of bulked plant (18 plants). This is the reason that there is no standard error in value of CSA-Pi9 in Field C