Water stress and seasonal effects on rubber quality in irrigated guayule

William W. Schioman, Donald J. Garrot, Dennis T Ray

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Guayule (line N396) was harvested monthly from January through July, 1984, from irrigated plots grown in Tucson, AZ. Irrigations were scheduled according to the crop water stress index (CWSI) to maintain three irrigation regimes. Plots were irrigated when their respective CWSI values reached or exceeded 0.3 (wet), 0.6 (medium), and 0.9 (dry). Individual plants from four replicated plots of each regime were analyzed for rubber molecular weight by gel permeation chromatography. The molecular weight (M̄w) values for all three irrigation regimes increased from January through March during the plants' winter quiescent period. Molecular weight decreased between March and April for all regimes when active growth resumed. By May, M̄w had increased above March values. Between irrigation regimes, significant differences in M̄w were observed only in January and June, with the dry plots yielding the highest molecular weight in both instances.

Original languageEnglish (US)
Pages (from-to)683-685
Number of pages3
JournalJournal of Agricultural and Food Chemistry
Volume34
Issue number4
StatePublished - 1986

Fingerprint

guayule
Rubber
rubber
Dehydration
water stress
Molecular Weight
Molecular weight
molecular weight
Irrigation
Water
irrigation management
Crops
Gel permeation chromatography
crops
Gel Chromatography
irrigation
winter
Growth

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)
  • Food Science
  • Chemistry (miscellaneous)

Cite this

Water stress and seasonal effects on rubber quality in irrigated guayule. / Schioman, William W.; Garrot, Donald J.; Ray, Dennis T.

In: Journal of Agricultural and Food Chemistry, Vol. 34, No. 4, 1986, p. 683-685.

Research output: Contribution to journalArticle

Schioman, William W. ; Garrot, Donald J. ; Ray, Dennis T. / Water stress and seasonal effects on rubber quality in irrigated guayule. In: Journal of Agricultural and Food Chemistry. 1986 ; Vol. 34, No. 4. pp. 683-685.
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