A Survey of Verbena xutha Lehm. (Gulf Vervain) Morphological and Cytological Characteristics

Gulf vervain ( Verbena xutha ) is a herbaceous perennial native to the southern United States. The species produces attractive spike inflorescences that provide a source of food for many pollinators. Besides botanical classifications, pollen morphology and cytological traits of this species have not...

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Published inHortScience Vol. 58; no. 3; pp. 245 - 246
Main Authors Parrish, S. Brooks, Qian, Renjuan, Wilson, Sandra B., Knox, Gary W., Deng, Zhanao
Format Journal Article
LanguageEnglish
Published American Society for Horticultural Science (ASHS) 01.03.2023
Subjects
chromosome
dna content
growth habit
ploidy
pollen
pollen stainability
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Summary:Gulf vervain ( Verbena xutha ) is a herbaceous perennial native to the southern United States. The species produces attractive spike inflorescences that provide a source of food for many pollinators. Besides botanical classifications, pollen morphology and cytological traits of this species have not been documented until now. Gulf vervain was found to have 2 n = 42 chromosomes, with the first report of 2C nuclear DNA content of 2.95 pg. Convex-triangular pollen grains averaged 37.18 μm in diameter, with 84% stainability after cotton blue staining to estimate pollen viability. This information brings light to the genetic makeup of gulf vervain and may aid in future breeding programs.
ISSN:0018-5345
2327-9834
DOI:10.21273/HORTSCI16999-22