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experiment. BC1NS is separated into group BC1NS that did not produce any R progeny and
group BC1NS* that produced a few R progeny (see Table 3). B. juncea morphology and small
flower s ize ar e f illed b ars; B. napus morphology a nd l arge f lower s ize a re empty ba rs.
Different letters indicate significant differences according to Fisher’s test (P-values) .......... 70
Fig. 3.1: Regression lines of siliques, biomass and seed numbers in terms of the percentage of
non-clipped plants per pot (CP, dots and red line; NC, circles and dotted blue line) ............. 87
Fig. 3.2: S ilique number, biomass and seed numbers of plants with (CP) or without (NC)
clipped l eaves a ccording t o t he c lipping t reatment ( CP, dot s a nd r ed l ine; N C, c ircles a nd
dotted blue line) ........................................................................................................................ 90
Fig. 3.3. Germination rate of seed germination of B. juncea with days after sowing ............. 96
Fig. 3.4. Examples of experimental designs for different percentage of NC plants: T 25 (top:
‘O’ is NC, and ‘X’ is CP), T50 (bottom), and T75 (top: ‘O’ is CP, and ‘X’ is NC). Grey region
indicates plot center, and white region is plot border. .......................................................... 120
Fig. 3.5 Mean values of flowering date, seed weight, biomass and number of viable seeds of
NC and CP plants in the border and center of plots in the first experiment (left column) and
the second experiment (right column). Vertical bars denote SE of the mean. Different letters
indicate s ignificant d ifferences b etween m ean v alues acco rding t o Tukey’s HSD (α = 0.05)
and Contrast tests. ................................................................................................................. 121
Fig. 3.6. Mean values and linear regressions of flowering date, seed weight, biomass, number
of viable seeds and allocation of resources to reproduction (Index=seed weight/ plant weight)
in terms of the different percentage of NC plants for NC (full symbols) and CP plants (empty
symbols) in the plot border (left column) and center (right column) in the first experiment (left
group) and the second experiment (right group). Vertical bars denote SE of the mean. ....... 122
Fig. 3.7. Relative difference between CP and NC plants (DI= (NCTi-CPTi) /CPT0) according to
NC percentage for three plant characteristics in four conditions with decreasing competition
intensity from left (A) to right (D): plot center (A) and border (B) of the first experiment, and
plot center (C) and border (D) of the second experiment. (Value at T100 is calculated as DI=
(NCT100-CPT0) /CPT0). ............................................................................................................. 123
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