<![CDATA[The aims of this research were to study leaf anatomy of Musa brachycarpa, M. paradisiaca normalis, M. sapientum and M. cavendishi as well as length, width, and thickness of the leaf also number, diameter, and tensile strength of leaf fiber. Samples were taken from Dampit, Wajak and Batu, Malang. Indonesia. The leaves sample had criteria fresh, mature, and not torn. Microscopy slides which were used anatomy observation were prepared using semi-permanent method. Retting method was applied to extract the fiber, while fiber strength was measured using tensile strength tester. One way anova and Duncan test were used to analyze mean of dependent variable (length-, width-, thick-leaf; number-, diameter-, and tensile strength of fiber). T-test independent sample was used to analysis mean and diameter fiber in adaxial and abaxial site. The result showed that M. brachycarpa had the highest number fiber cell, wider diameter fiber, and more adaxialâs number fiber cell than abaxial one. The diameter of fiber 5-6 mm. M. sapietum had the longest and widest oh leaves. While the thickness of leaf was showed by M. paradisiaca. All observed species didnât show significantly different in tensile strength test. The tensile strength had value 35x10-4-48x10-4 MPa.Key words: diameter of fibers, number of fiber, M. brachycarpa , strength of fiber]]>
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