Guayule seed germination under different conditioning treatments

Marçal H A Jorge, Maren E. Veatch-Blohm, Dennis T Ray, Michael A. Foster

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Guayule (Parthenium argentatum Gray), a latex producing shrub from northern Mexico and southwestern Texas, has been considered a viable alternative commercial crop for arid lands throughout the world. Stand establishment by direct seeding has been ineffectual because of problems with seed germination. Seed dormancy has been ascribed as one of the main reasons for low germination. Special seed treatments, such as physical and chemical conditioning, have been devised to overcome embryo and seed coat dormancy, thereby improving germination and emergence. However, the treatments described in the literature have not been as effective as expected, and many of them are costly and time consuming. The objective of this study was to determine the effects of nine preconditioning treatments on the percentage and rate of germination and emergence, and seedling fresh weight. Three-year-old seed of lines AZ-101, AZ-3, and N9-3 were analyzed with X-ray to determine the seed lot quality. The results showed differences in quality (defined as seeds containing embryos and endosperm) among the three lines; however, no differences were found for percentage and rate of germination and emergence, and seedling fresh weight among the nine treatments. These results suggest that in older seed lots seed quality is of greater importance in determining germination and emergence than conditioning treatments.

Original languageEnglish (US)
Pages (from-to)60-65
Number of pages6
JournalIndustrial Crops and Products
Volume24
Issue number1
DOIs
StatePublished - Jul 2006

Fingerprint

guayule
Germination
Seeds
seed germination
germination
Plant Dormancy
seeds
embryo (plant)
Parthenium argentatum
Seedlings
seedlings
direct seeding
Embryonic Structures
seed dormancy
latex
seed treatment
seed quality
arid lands
Weights and Measures
dormancy

Keywords

  • Direct seeding
  • Guayule
  • New crops
  • Parthenium argentatum
  • Seed conditioning
  • Seed quality

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Food Science

Cite this

Guayule seed germination under different conditioning treatments. / Jorge, Marçal H A; Veatch-Blohm, Maren E.; Ray, Dennis T; Foster, Michael A.

In: Industrial Crops and Products, Vol. 24, No. 1, 07.2006, p. 60-65.

Research output: Contribution to journalArticle

Jorge, Marçal H A ; Veatch-Blohm, Maren E. ; Ray, Dennis T ; Foster, Michael A. / Guayule seed germination under different conditioning treatments. In: Industrial Crops and Products. 2006 ; Vol. 24, No. 1. pp. 60-65.
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