Morphological, chemical, and cytogenetic characters of F1 hybrids betweenParthenium argentatum (Guayule) andP. fruticosum var.fruticosum (Asteraceae) and their potential in rubber improvement

Naqvi, Himayat H.; Hashemi, A.; Davey, J. R.; Waines, J. G.

doi:10.1007/bf02859351

Cited by 9 publications

(6 citation statements)

References 17 publications

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“…On the other hand, two taxa of the herbaceous perennial section of Partheniastrum, diploid P. hispidum var. auriculatum of the present study and tetraploid P. integrifolium (Naqvi, 1982), have been crossed successfully with diploid guayule without major difficulties. The above results and the results from hybridization between sections Parthenichaeta and Bolophvtum (Hashemi et al, 1986) indicate that sections Parthenichaeta, Bolophytum, and Partheniastrum are more closely related to each other than to section Argyrochaeta.…”

Section: Meiotic Behavior-mentioning

confidence: 82%

“…auriculatum hybrids is an indication that most of the chromosomes of these two species pair during meiosis. Hybrids of guayule crossed to P. schottii (Estilai et al, 1985); P. fruticosum (Naqvi et al, 1987); P. rollinsianum, P. alpinum var. tetraneuris and P. alpinum var.…”

Section: Meiotic Behavior-mentioning

confidence: 99%

“…Hybrids have been produced from crosses between guayule and the following woody arborescent and caespitose species: P. tomentosum, P. incanum (Rollins, 1946), P. schottii (Estilai, Hashemi, and Youngner, 1985), P.fruticosum (Gomez, 1983;Naqvi et al, 1987), P. rollinsianum, and P. alpinum (Hashemi, West, and Waines, 1986).…”

mentioning

confidence: 99%

“…No hybrids were obtained from 867 crosses between diploid guayule and diploid P. hysterophorus (Rollins, 1946). More recently, Naqvi (1982) produced hybrids from interspecific crosses between diploid (2n = 36) P. argentatum and tetraploid (2n = 72) perennial P. integrifolium. In addition to the above hybrids, which included P. argentatum as the woody parent, Rollins (1946) obtained hybrids from crosses between woody triploid (2n = 54) P. incanum and herbaceous P. hysterophorus.…”

mentioning

confidence: 99%

“…Crossed heads were collected and threshed by hand, and achenes were germinated followingthe procedure described by Naqvi and Hanson (1982). During the course of this investigation, plants were maintained in a greenhouse.…”

mentioning

confidence: 99%

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Relationship of Woody Parthenium Argentatum and Herbaceous P. Hispidum Var. Auriculatum (Asteraceae)

Hashemi

Estilai

West

et al. 1987

American J of Botany

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Interspecific hybrids between woody Parthenium argentatum Gray (guayule), native to Mexico and Southwest Texas, and herbaceous perennial P. hispidum var. auriculatum (Britton) Rollins, native to the United States, were obtained successfully. The F1 hybrids were intermediate for most morphological characters with the exception of the short woody stem, yellow pollen color, and the trichome morphology. Chromosome counts revealed the presence of 2n = 36 A‐chromosomes in P. argentatum. The same number of A‐chromosomes and four B‐chromosomes were found in P. hispidum var. auriculatum. Observations of pollen mother cells showed regular meiosis in both parental species. At diakinesis, chiasmata averaged 1.12 and 1.24 per bivalent for P. argentatum and P. hispidum var. auriculatum, respectively. Meiotic behavior of the F1 hybrids was irregular. F1 hybrids averaged 4.43 univalents at metaphase I, 1.95 laggards at anaphase I, and 1.62 micronuclei at the tetrad stage. The low pollen stainability (5.1%) in the F1 hybrids and the limited number of viable BC1 seeds (4.07%) may be reflections of the irregular meiosis. Although these primary hybrids are partially fertile, they can be used to introduce desirable characteristics of P. hispidum var. auriculatum, such as herbaceous perennial habit, regrowth ability, and cold tolerance into guayule.

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Section: Meiotic Behavior-mentioning

confidence: 82%

Section: Meiotic Behavior-mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Relationship of Woody Parthenium Argentatum and Herbaceous P. Hispidum Var. Auriculatum (Asteraceae)

Hashemi

Estilai

West

et al. 1987

American J of Botany

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Breeding Guayule

Thompson

Ray

1989

Plant Breeding Reviews

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Artificial Hybridization of Rubber‐bearing Guayule With Cold‐tolerant Parthenium Ligulatum

Hashemi

Estilai

West

et al. 1988

American J of Botany

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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 × male P. ligulatum crosses produced F1 hybrids. Only crosses involving guayule as female parent and F1 plants as male parents produced backcross (BC,) plants. Hybrid plants were variable with respect to their growth habit, inflorescence, and leaf shape. Both parents and F1 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 averaged 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 F1 hybrids, and the production of BC1 plants indicate that the two species are related in spite of their 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. The development of cold‐tolerant guayule cultivars is expected to expand the areas of guayule production beyond that of the Chihuahuan desert and similar climates.

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Morphological, chemical, and cytogenetic characters of F1 hybrids betweenParthenium argentatum (Guayule) andP. fruticosum var.fruticosum (Asteraceae) and their potential in rubber improvement

Cited by 9 publications

References 17 publications

Relationship of Woody Parthenium Argentatum and Herbaceous P. Hispidum Var. Auriculatum (Asteraceae)

Relationship of Woody Parthenium Argentatum and Herbaceous P. Hispidum Var. Auriculatum (Asteraceae)

Breeding Guayule

Artificial Hybridization of Rubber‐bearing Guayule With Cold‐tolerant Parthenium Ligulatum

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