The phloem of the sweet orange tree trunk and the seasonal production of xylem and phloem
Author AffiliationsHenry Schneider was Assistant Plant Pathologist in the Experiment Station, Riverside.
Hilgardia 21(12):331-366. DOI:10.3733/hilg.v21n12p331. April 1952.
This paper is a report of an anatomical research undertaken in 1947 on the trunks of mature sweet orange trees on sweet orange rootstock. Object of the investigation was to determine the time at which new trunk phloem is produced, with respect to the time of shoot and root extension growth and xylem production. Also investigated were the anatomic features of xylem and phloem development; the portion of the phloem which is replaced during the year; and how and when the older sieve tubes degenerate.
Appended to the present report is a detailed method for collecting, sectioning, and staining large batches of citrus phloem.
Table of Contents is on outside back cover.
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Also in this issue:Christmas tree quality of white fir understory in a giant sequoia forest
Nitrogen fertilization for Bartlett pears
Growth retardant tests on potted poinsettias
Weed control studies in strawberries
New pepper varieties
Bacterial blight eliminated from California cotton gins
Pea gravel envelopes for tile drains in Coachella Valley
Steam pressure processing of milo for growing-finishing pigs