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Table 1 Quantitative genetic partitioning and significance of effects for leaf gas-exchange, vegetative, and reproductive traits for genotypes of B. rapa within the well-watered (WW) and drought (DR) treatments. Standard errors are indicated in parentheses

From: Genotypic variation in biomass allocation in response to field drought has a greater affect on yield than gas exchange or phenology

Trait WW VG (SE) WW block effect (SE) WW VG/VP DR treatment VG (SE) DR block effect (SE) DR VG/VP
A (μmol m-2 s-1) 21.10 (3.71)** 1.16 (0.88) NS 0.21 25.24 (4.66)** 1.09 (0.96) NS 0.24
Fv'/Fm' 0.004 (0.00)** 0.000 (0.000) NS 0.54 0.005 (0.0007)** 0.00003 (0.00003) NS 0.67
gs (mol m-2 s-1) 0.003 (0.0008)** 0.001 (0.001) NS 0.09 0.004 (0.0009)** 0.0009 (0.0006) NS 0.14
W g 34.49 (16.63)** 6.79 (6.96) NS 0.05 60.72 (17.20)** 10.29 (7.59) NS 0.14
δ13C 1.29 (0.49)** 0.004 (0.04) NS 0.64 1.31 (0.4835)** 0.05 (0.05) NS 0.75
LMA (g m-2) 29.57 (8.52)** 1.77 (2.23) NS 0.13 17.641 (7.08)** 3.02 (3.03) NS 0.09
Above-ground biomass (g) 118.53 (17.46)** 30.05 (16.6) 0.46 42.52 (6.12)** 4.84 (2.74) 0.57
Below-ground biomass (g) 0.16 (0.02)** 0.02 (0.008) 0.48 0.06 (0.008)** 0.005 (0.003) 0.61
Root:Shoot ratio 0.00003 (0.000008)** 0.00002 (0.00001) 0.13 0.0001 (0.00002)** 0.00002 (0.00001) NS 0.20
Leaf area (cm2) 39.14 (6.66)** 4.38 (3.13) NS 0.36 10.96 (2.39)** 0.47 (0.49) NS 0.25
Plant height (cm) 103.84 (15.65)** 4.30 (2.87) NS 0.46 84.3845 (15.0446)** 6.21 (4.31) NS 0.31
Fruit production (number of fruits) 10672 (1502.06)** 526.17 (317.08) 0.57 3095.72 (441.96)** 206.77 (121.81) 0.57
Days to flowering 3.91 (0.66)** 0.57 (0.34) 0.30 4.76 (0.77)** 0.23 (0.16) NS 0.39
  1. V G among-genotypic variance, V G /V P among-genotypic variance divided by total phenotypic variance, A, photosynthetic rate, Fv'/Fm' chlorophyll fluorescence in light, g s stomatal conductance, W g intrinsic water use efficiency (A/g s ), δ 13 C carbon isotope composition, LMA leaf mass per area, P < 0.05, **P < 0.0001, NS not significant