Inheritance of male sterility in Lesquerella fendleri

D. A. Dierig, P. M. Tomasi, Dennis T Ray

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Lesquerella fendleri (Gray) Wats. (lesquerella, Brassicaceae), native to the southwestern United States, is a potentially useful industrial oilseed crop. The seed oil contains hydroxy fatty acids, similar to castor (Ricinus communis L.) seed oil. The unique properties of the oil, along with coproducts, allow additional applications that would not compete with castor oil. Plants with vestigial anthers (male-sterile) were discovered in a greenhouse-grown, nonselected population in 1993. The inheritance of the trait was investigated through four crop seasons. Crosses were made among male-sterile and male-fertile plants from an open pollinated population, thus, they were heterozygous for many traits. Statistical analysis indicated that male sterility is expressed as a result of two nonlinked nuclear genes with epistatic relations and different cytoplasms, which cause partial or total fertility restoration. These ratios fit a 13:3 epistatic ratio, indicating that male sterility is controlled by homozygous recessive alleles at one locus in combination with at least one dominant allele at the second locus, i.e., ms1ms1 Ms2_. Some cross results were skewed in favor of fertile phenotypes presumably due to cytoplasmic effects causing partial fertility restoration. Male-sterile lines could be used for hybrid development and this information will be helpful in implementing a strategy for hybrid development. Hybrid plants and higher yields will enhance the potential for commercialization of this new alternative crop.

Original languageEnglish (US)
Pages (from-to)738-743
Number of pages6
JournalJournal of the American Society for Horticultural Science
Volume126
Issue number6
StatePublished - 2001
Externally publishedYes

Fingerprint

Male Infertility
male fertility
inheritance (genetics)
Oils
seed oils
Fertility
Seeds
Genetic Epistasis
Alleles
Lesquerella
Southwestern United States
Castor Oil
Brassicaceae
Ricinus
alleles
hydroxy fatty acids
castor oil
alternative crops
Hydroxy Acids
loci

Keywords

  • Brassicaceae
  • Cytoplasmic effects
  • Epistasis
  • Hybrid seed production
  • Self incompatibility

ASJC Scopus subject areas

  • Horticulture
  • Plant Science

Cite this

Inheritance of male sterility in Lesquerella fendleri. / Dierig, D. A.; Tomasi, P. M.; Ray, Dennis T.

In: Journal of the American Society for Horticultural Science, Vol. 126, No. 6, 2001, p. 738-743.

Research output: Contribution to journalArticle

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