Fig. 3.

Comparison of peduncles of M. sylvestris (type 1, A–D) and M. fusca (type 2, E–H) during one growing season. Fruit weight, structural modulus of elasticity, maximum tensile strength and breaking force as well as cross-sectional area fractions of single tissues with their cell-wall area proportions are shown. The structural modulus of elasticity was calculated by applying strains of 0·05–0·25 % in static tests or 0·2 % in dynamic tests. Error bars are standard deviations; lines indicate the trends, based on non-linear fitting. The cross-sectional area fractions of single tissues are shown as different colours and their cell-wall area proportions are hatched. Abbreviations: c, collenchyma; cp, cortical parenchyma; e, epidermis; fb, fibres; p, phloem; scl, sclereids; x, xylem.