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Table 3.

Regression analysis of inter‐branch distance with branch extension towards neighbour (Fig. 5A, B) and neighbour avoidance index (Fig. 5C)

Species Branch category Intercept Slope R 2 d.f. F P
Branch extension towards neighbour* C. crenata C‐H branches –2·06 0·685 0·517 29 29·99 <0·01
C. crenata C‐C branches –0·59 0·423 0·376 31 18·08 <0·01
Other spp. H‐C branches 0·77 0·304 0·143 29 4·682 <0·05
Neighbour avoidance index C. crenata C‐H branches 177·36 –14·50 0·551 29 34·42 <0·01
C. crenata C‐C branches 119·47 –7·24 0·094 24 2·391 N.S.

*The slopes (d.f. = 86, F = 2·58, P < 0·05) and intercepts (d.f. = 88, F = 2·42, P < 0·05) of the three regressions were not significantly different (ANCOVA).