Title page for ETD etd-11152013-040406

Type of Document Master's Thesis
Author Wolff, David W.
URN etd-11152013-040406
Title Evaluation of anther-derived, inbred, and hybrid populations of Streptocarpus X hybridus Voss
Degree Master of Science
Department Horticulture
Advisory Committee
Advisor Name Title
Richard E. Veilleux Committee Chair
Glenn R. Buss Committee Member
  • Gesneriaceae
Date of Defense 1985-08-05
Availability restricted
The potential of inbreeding and selective hybridization, along with anther culture, for increasing homogeneity with 2 early flowering cultivars of Streptocarpus X hybridus

was examined. A 'Concorde' and 'Mixed Nymph' genotype expressed inbreeding depression within 2 generations, characterized by a reduction in corolla, leaf, and peduncle size, as well as an increase in floral deformities (flower part

fusions). Inbred populations contained individuals which resembled the parent cultivars for several morphological traits. Such could be selected by cluster analysis of important

traits, for the development of inbreeding depression resistant lines for hybrid production of more uniform, seed—propagated Streptocarpus cultivars. Reciprocal differences were observed among hybrids of first generation inbreds, suggesting that female parent selection is critical for certain ornamental traits such as corolla size and peduncle


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