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Title: COMPARISON OF ONE- AND TWO-YEAR OLD GUAYULE LINES

Author
item Coffelt, Terry
item Dierig, David
item RAY, D - UNIV OF ARIZONA
item Nakayama, Francis

Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 6/30/1997
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Latex allergies in the U.S. have become a serious health problem in certain population groups. Guayule (Parthenium argentatum Gray) is a source of hypoallergenic latex. Higher yielding, faster growing, and easier to establish lines with higher latex contents are needed for guayule to be successful as a new crop. The objective of this study was to evaluate four advanced lines at two locations and two plant ages for plant survival, height, width, and latex content. Lines were transplanted in the spring of 1995 and 1996 at the University of Arizona Maricopa and Marana Agricultural Research Centers. Plants grown at Marana were significantly taller and wider than at Maricopa. Two-year old plants were significantly taller and wider than one-year old plants, while one-year old plants had a higher survival rate. G7-11, G7-14, and G7-15 were significantly taller and wider than C16-1, and had better plant survival. Preliminary data from latex analyses indicate significant differences among lines, but not between age groups. Results from these studies indicate that the traits studied can be improved by selection of improved guayule lines.