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This article in CS

  1. Vol. 21 No. 6, p. 849-851
     
    Received: July 15, 1980


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doi:10.2135/cropsci1981.0011183X002100060012x

Stem and Root Density in Kenaf and Rosselle At Different Harvest Dates1

  1. W. C. Adamson and
  2. N. A. Minton2

Abstract

Abstract

Since low density is one of the problems facing the potential new pulp crops kenaf (Hibiscus cannabinus L.), and roselle (H. sabdariffa L.), field work was initiated to measure density of different parts of roselle and kenaf entries at different times in the harvest season. In a 2-year test involving a fiber-type roselle (A59-56), a root-knot (Meloidogyne spp.), resistant kenaf (j-1-113), and a root-knot susceptible kenaf (‘Everglades 71’), the density of stems and roots was found to decline from stem and root tips to the base of the plant, with the exception of Everglades 71 which showed no difference in density among sections. Stems and roots of A59-56 and j-1-113 were more dense than those of Everglades 71. Density of stems and roots generally declined with later harvest, but stem-tip density in the resistant kenaf and roselle increased until the last harvest, an indication of the later maturity of these entries. Density is likely to be a factor if kenaf and roselle cultivars are developed for pulp uses.

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