Effect of plant population on seed yield, mass and size of guayule

Bedane, G. M., Gupta, M. L. and George, D. L. (2009) Effect of plant population on seed yield, mass and size of guayule. Industrial Crops and Products, 29 1: 139-144. doi:10.1016/j.indcrop.2008.04.020

Author Bedane, G. M.
Gupta, M. L.
George, D. L.
Title Effect of plant population on seed yield, mass and size of guayule
Journal name Industrial Crops and Products   Check publisher's open access policy
ISSN 0926-6690
Publication date 2009-01
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.indcrop.2008.04.020
Volume 29
Issue 1
Start page 139
End page 144
Total pages 6
Editor D. T. Ray
M. J. Pascual-Villalobos
N. Belgacem
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Collection year 2010
Language eng
Subject 070302 Agronomy
960899 Flora, Fauna and Biodiversity of Environments not elsewhere classified
Abstract Guayule (Parthenium argentatum Gray) is a source of high quality low-allergenic natural rubber. It is a relatively new crop in Australia and optimum plant density for seed production has not been established. The objective of the current experiment was to examine whether seed yield, mass and size are affected by plant population. The effect of plant population on seed yield, mass and size was investigated by planting guayule (AZ-2) at 4444, 8300, 12,500 and 25,000 plants/ha. Data were collected at 16 and 28 months after planting. Seed was harvested manually multiple times over 4 weeks each year following the main flowering period in spring. Harvested seed was threshed and clean seed yield was compared among different plant populations. Seed quality attributes were also compared in terms of 1000-seed mass and seed size. Lowest plant population of 4444 plants/ha provided the highest yield at 28 months but was the lowest yielding at 16 months because the plants had not yet reached full size to compensate for the wider spacing. However, at both ages this treatment produced heavier and larger seeds. The difference in yield or seed mass and size between plant populations ranging from 8300 to 25,000 plants/ha was not significant. Overall results of the study demonstrated that seed yield and seed size, which is important in direct seeding could be affected by plant population.
Keyword Guayule
Plant population
Seed size classes
1000-Seed mass
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Agriculture and Food Sciences
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Created: Thu, 03 Sep 2009, 09:02:15 EST by Mr Andrew Martlew on behalf of School of Land, Crop and Food Sciences