マメ科植物種子根(主根)の先端切除による側根維管束系の異型形成能

概要

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Tips of pea (Pisum sativum) primary roots from seeds germinated and grown for 3,4, or 5 d were decapitated by excision 1 cm from their tips in order to induce lateral root production. One week later, lateral roots were cross-sectioned to determine their vascular anatomy for comparison to primary root anatomy, which is usually triarch (three xylem sectors, also known as strands, radially alternating with three phloem sectors). Undecapitated primary roots produced lateral roots that usually were triarch also. Decapitation caused primary roots to produce new laterals with variable vascular anatomy: 2-5 xylem strands. Trends of vascular differentiation in lateral roots were evaluated at different distances from the tips of their respective primary roots at different stages of maturity.
拓殖大学の論文