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Genetic Analysis of Male Sterility and Self-Compatibility in Russian Dandelion (Taraxacum kok-saghyz)

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Title: Genetic Analysis of Male Sterility and Self-Compatibility in Russian Dandelion (Taraxacum kok-saghyz)
Author: Di, Tiantian
Department: Department of Plant Agriculture
Program: Plant Agriculture
Advisor: Wolyn, David
Abstract: Russian dandelion (Taraxacum kok-saghyz Rodin) produces high-quality natural rubber and can be developed as a new crop for Ontario, Canada and elsewhere. Domestication and genetic analysis of important traits are critical in a breeding program for this species. This study investigates two traits required for the production of hybrids: male sterility and self-compatibility (SC). Over generations of crossing, cytoplasmic male sterility (CMS), interacting with a dominant nuclear restorer of fertility allele, Rf, was identified. SC was also a dominant trait at a single locus. Penetrance of both CMS and SC was temperature dependent as increased temperature caused reversions to fertility and self-incompatibility. Continued breeding and selection for stable genotypes with CMS and SC may advance the introduction of hybrids and Russian dandelion as a new crop.
URI: http://hdl.handle.net/10214/10304
Date: 2017-04-13


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