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Title: Artificial hybridization of rubber-bearing guayule with cold-tolerant Parthenium ligulatum

Abstract

Caespitose and cold-tolerant plants of Parthenium ligulatum (Jones) Barneby (Asteraceae) from a native population in the Uinta Basin, Utah, were uprooted, potted, and transferred to a greenhouse in California. Approximately two years after transfer, the plants flowered and subsequently were crossed to diploid guayule (Parthenium argentatum Gray), the rubber-bearing species, native to the state of Durango, Mexico. Only female guayule {times} male P. ligulatum crosses produced F{sub 1} hybrids. Only crosses involving guayule as female parent and F{sub 1} plants as male parent produced backcross (BC{sub 1}) plants. Hybrid plants were variable with respect to their growth habit, inflorescence, and leaf shape. Both parents and F{sub 1} hybrids had 2n = 36 chromosomes. Unlike the parents, however, meiosis was irregular in the hybrids which showed a range of 0-5 and an average of 2.1 univalents at metaphase I. Hybrids averages 0.87 laggards at anaphase I and 0.83 micronuclei at the tetrad stage. The crossability of guayule and P. ligulatum, the high degree of chromosome pairing of the F{sub 1} hybrids, and the production of BC{sub 1} plants indicate that the two species are related in spite of their of distinct morphological and ecological differences. This study suggests that the cold-tolerancemore » trait of P. ligulatum may be transferred to guayule through interspecific hybridization followed by backcrossing.« less

Authors:
; ; ;  [1]
  1. (Univ. of Califorina, Riverside (USA) Univ. of California, Davis (USA))
Publication Date:
OSTI Identifier:
7180049
Resource Type:
Journal Article
Journal Name:
American Journal of Botany; (USA)
Additional Journal Information:
Journal Volume: 75:2; Journal ID: ISSN 0002-9122
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; GUAYULE; HYBRIDIZATION; PLANT BREEDING; PRODUCTIVITY; TEMPERATURE EFFECTS; TOLERANCE; EUPHORBIA; MAGNOLIOPHYTA; MAGNOLIOPSIDA; PLANTS; RUBBER TREES; TREES; 090900* - Biomass Fuels- Processing- (1990-)

Citation Formats

Hashemi, A., Estilai, A., West, J.E., and Waines, J.G. Artificial hybridization of rubber-bearing guayule with cold-tolerant Parthenium ligulatum. United States: N. p., 1988. Web. doi:10.2307/2443886.
Hashemi, A., Estilai, A., West, J.E., & Waines, J.G. Artificial hybridization of rubber-bearing guayule with cold-tolerant Parthenium ligulatum. United States. doi:10.2307/2443886.
Hashemi, A., Estilai, A., West, J.E., and Waines, J.G. Mon . "Artificial hybridization of rubber-bearing guayule with cold-tolerant Parthenium ligulatum". United States. doi:10.2307/2443886.
@article{osti_7180049,
title = {Artificial hybridization of rubber-bearing guayule with cold-tolerant Parthenium ligulatum},
author = {Hashemi, A. and Estilai, A. and West, J.E. and Waines, J.G.},
abstractNote = {Caespitose and cold-tolerant plants of Parthenium ligulatum (Jones) Barneby (Asteraceae) from a native population in the Uinta Basin, Utah, were uprooted, potted, and transferred to a greenhouse in California. Approximately two years after transfer, the plants flowered and subsequently were crossed to diploid guayule (Parthenium argentatum Gray), the rubber-bearing species, native to the state of Durango, Mexico. Only female guayule {times} male P. ligulatum crosses produced F{sub 1} hybrids. Only crosses involving guayule as female parent and F{sub 1} plants as male parent produced backcross (BC{sub 1}) plants. Hybrid plants were variable with respect to their growth habit, inflorescence, and leaf shape. Both parents and F{sub 1} hybrids had 2n = 36 chromosomes. Unlike the parents, however, meiosis was irregular in the hybrids which showed a range of 0-5 and an average of 2.1 univalents at metaphase I. Hybrids averages 0.87 laggards at anaphase I and 0.83 micronuclei at the tetrad stage. The crossability of guayule and P. ligulatum, the high degree of chromosome pairing of the F{sub 1} hybrids, and the production of BC{sub 1} plants indicate that the two species are related in spite of their of distinct morphological and ecological differences. This study suggests that the cold-tolerance trait of P. ligulatum may be transferred to guayule through interspecific hybridization followed by backcrossing.},
doi = {10.2307/2443886},
journal = {American Journal of Botany; (USA)},
issn = {0002-9122},
number = ,
volume = 75:2,
place = {United States},
year = {1988},
month = {2}
}