Quality of guayule seeds separated by physical attributes

Marçal Henrique Amici Jorge, Maren E. Veatch-Blohm, Dennis T Ray

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Guayule (Parthenium argentatum Gray) is being developed as a new commercial crop to be grown in arid and semiarid regions. Guayule stands are presently established using transplants; however, establishment by direct-seeding would reduce costs and make production more economical. A major difficulty in field establishment by direct-seeding is the variation in the quality of guayule seeds. Guayule seeds vary greatly in color, size, and weight, which are the attributes believed to be associated with the observed germination differences among and within seed lots. To determine the importance of these attributes, guayule seeds from different seed lots were separated by size (diameter) and color, each separation class was weighed and then seed quality determined by germination percentage and rate. X-ray analysis was used to distinguish filled from unfilled seeds, and this was related to the germination results. In six guayule breeding lines (N565, 11591, AZ-2, AZ-3, AZ-4, and AZ-5), the highest quality seeds were darker (opaque-black and gray), small to medium in diameter (1.4-1.6 mm), and were heavier (a greater proportion of filled seeds). Color appeared to be a more efficient separator for seed quality than seed size; however, separation by size may be acceptable on a large scale and still provide higher quality and more uniform seed lots.

Original languageEnglish (US)
Pages (from-to)55-62
Number of pages8
JournalIndustrial Crops and Products
Volume25
Issue number1
DOIs
StatePublished - Jan 2007

Fingerprint

guayule
Seeds
seeds
seed quality
Germination
direct seeding
germination
Color
color
Parthenium argentatum
separators
breeding lines
X-radiation
Breeding

Keywords

  • Direct-seeding
  • Parthenium argentatum gray
  • Seed color
  • Seed quality
  • Seed size
  • X-ray analysis

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Food Science

Cite this

Quality of guayule seeds separated by physical attributes. / Jorge, Marçal Henrique Amici; Veatch-Blohm, Maren E.; Ray, Dennis T.

In: Industrial Crops and Products, Vol. 25, No. 1, 01.2007, p. 55-62.

Research output: Contribution to journalArticle

Jorge, Marçal Henrique Amici ; Veatch-Blohm, Maren E. ; Ray, Dennis T. / Quality of guayule seeds separated by physical attributes. In: Industrial Crops and Products. 2007 ; Vol. 25, No. 1. pp. 55-62.
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