Publication Date
1997
Description
The second, 5th and 8th internodes, counting from the lowest internode, taken from the heading, milk-ripe and full-ripe maize (Zea mays L), were dissected into fractions of epidermis (EPI), sclerenchyma (SCL), vascular bundle (VB) and pith parenchyma (PITH). The proportion of dry weight of VB to the total dry weight were smallest (8-13%), followed by EPI (15-22%) and SCL (15-30%) and PITH (43-58%). These values differed entirely from the proportions of area for the fractions on the cross-cut section. The lignin concentration, in the most case, was in the order of; EPI > SCL > VB > PITH. From the bottom toward the top of stem, overall, lignin concentration increased in PITH but it decreased in EPI and SCL, and in VB was relatively consistent. The proportion of lignin content in VB to the total lignin content was smallest (9-14%), and varied from 24 to 35% for EPI, from 18 to 48% for SCL and from 12 to 44% for PITH. The higher the internode the smaller the proportion of lignin content in SCL, consequently, the greater in PITH.
Citation
Kawamura, O; Niijima, N; and Niimi, M, "Estimation of Dry Matter and Lignin Distributions in Maize Internodes by Micro-Surgical Tissue Separation" (2024). IGC Proceedings (1989-2023). 37.
https://uknowledge.uky.edu/igc/1997/session17/37
Included in
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Estimation of Dry Matter and Lignin Distributions in Maize Internodes by Micro-Surgical Tissue Separation
The second, 5th and 8th internodes, counting from the lowest internode, taken from the heading, milk-ripe and full-ripe maize (Zea mays L), were dissected into fractions of epidermis (EPI), sclerenchyma (SCL), vascular bundle (VB) and pith parenchyma (PITH). The proportion of dry weight of VB to the total dry weight were smallest (8-13%), followed by EPI (15-22%) and SCL (15-30%) and PITH (43-58%). These values differed entirely from the proportions of area for the fractions on the cross-cut section. The lignin concentration, in the most case, was in the order of; EPI > SCL > VB > PITH. From the bottom toward the top of stem, overall, lignin concentration increased in PITH but it decreased in EPI and SCL, and in VB was relatively consistent. The proportion of lignin content in VB to the total lignin content was smallest (9-14%), and varied from 24 to 35% for EPI, from 18 to 48% for SCL and from 12 to 44% for PITH. The higher the internode the smaller the proportion of lignin content in SCL, consequently, the greater in PITH.
