This is a preview. Log in through your library . Abstract The secondary phloem of apple consists of sieve-tube elements, companion cells, phloem parenchyma cells, fiber-sclereids, and ray parenchyma ...
American Journal of Botany, Vol. 88, No. 8 (Aug., 2001), pp. 1331-1339 (9 pages) Phylogenetic analysis provides a rational basis for comparative studies of phloem structure and phloem loading.
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