Interspecific hybridization among cultivars of hardy Hibiscus species section Muenchhusia
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Interspecific hybridization among cultivars of hardy Hibiscus species section Muenchhusia. / Kuligowska, Katarzyna; Lütken, Henrik Vlk; Christensen, Brian; Müller, Renate.
In: Breeding Science, Vol. 66, No. 2, 2016, p. 300-308.Research output: Contribution to journal › Journal article › peer-review
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TY - JOUR
T1 - Interspecific hybridization among cultivars of hardy Hibiscus species section Muenchhusia
AU - Kuligowska, Katarzyna
AU - Lütken, Henrik Vlk
AU - Christensen, Brian
AU - Müller, Renate
PY - 2016
Y1 - 2016
N2 - Rose mallows belong to the Muenchhusia section of the Hibiscus genus. They represent a small group of cold tolerant North American plants and are popular ornamentals mainly because of their abundant, large and colorful flowers. Due to their geographical origin they are well suited for garden use in temperate regions worldwide. The aim of the study was to investigate hybridization barriers in crosses among cultivars of Hibiscus species from the Muenchhusia section: H. coccineus, H. laevis and H. moscheutos. Crossing barriers were identified as both pre- and post-zygotic. The analysis of pollen tube growth revealed inhibition of pollen tubes and their abnormal growth. In specific crosses the fertilization success was low. The pre-fertilization barriers did not cause a complete reproductive isolation between the hybridization partners. In relation to post-fertilization barriers, the occurrence of hybrid incompatibilities such as unviability, chlorosis, necrosis, stunted growth and albinism were the main drawback in production of hybrids. The appearance of symptoms of hybrid incompatibilities was dependent upon specific parental plants. The obtained progeny had intermediate leaf morphology and flower morphology compared to parental plants. Hybridity state was verified by morphological analysis and RAPD markers. Based on the overall plant morphology, 472 hybrid progenies were obtained.
AB - Rose mallows belong to the Muenchhusia section of the Hibiscus genus. They represent a small group of cold tolerant North American plants and are popular ornamentals mainly because of their abundant, large and colorful flowers. Due to their geographical origin they are well suited for garden use in temperate regions worldwide. The aim of the study was to investigate hybridization barriers in crosses among cultivars of Hibiscus species from the Muenchhusia section: H. coccineus, H. laevis and H. moscheutos. Crossing barriers were identified as both pre- and post-zygotic. The analysis of pollen tube growth revealed inhibition of pollen tubes and their abnormal growth. In specific crosses the fertilization success was low. The pre-fertilization barriers did not cause a complete reproductive isolation between the hybridization partners. In relation to post-fertilization barriers, the occurrence of hybrid incompatibilities such as unviability, chlorosis, necrosis, stunted growth and albinism were the main drawback in production of hybrids. The appearance of symptoms of hybrid incompatibilities was dependent upon specific parental plants. The obtained progeny had intermediate leaf morphology and flower morphology compared to parental plants. Hybridity state was verified by morphological analysis and RAPD markers. Based on the overall plant morphology, 472 hybrid progenies were obtained.
KW - Journal Article
U2 - 10.1270/jsbbs.66.300
DO - 10.1270/jsbbs.66.300
M3 - Journal article
C2 - 27162501
VL - 66
SP - 300
EP - 308
JO - Breeding Science
JF - Breeding Science
SN - 1344-7610
IS - 2
ER -
ID: 169134610