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First Fruiting Intergeneric Hybrids between Citrus and Citropsis

Smith, M. W. and Gultzow, D. L. and Newman, T. K. (2013) First Fruiting Intergeneric Hybrids between Citrus and Citropsis. Journal of the American Society for Horticultural Science, 138 (1). pp. 57-63. ISSN 0003-1062

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Article Link(s): http://journal.ashspublications.org/content/138/1/...

Abstract

Fruiting hybrids are reported for the first time between the genera Citrus L. and Citropsis (Engl.) Swing. & M.Kell. Conventional hybridization using the recently described species Citrus wakonai P.I.Forst. & M.W.Sm. and Citropsis gabunensis (Engl.) Swing. & M.Kell. resulted in high rates of fruit set and seed formation. Although seed were only half normal size, over 90% germinated without the need for embryo rescue techniques. Plant losses were high during the first few months but after six months, the 327 surviving hybrids were potted on. These grew vigorously on their own roots and 35 of them flowered within two years of sowing. Plants flowered continuously but all were pollen-sterile and ovaries abscised shortly after petal fall. However, at 25 months, two newly flowering hybrids began setting fruit. The development, identification, morphology, breeding efficiency, and future implications of this unique germplasm are described.

Item Type:Article
Business groups:Horticulture and Forestry Science
Additional Information:Smith, Malcolm W. Gultzow, Debra L. Newman, Toni K. Amer soc horticultural science Alexandria
Keywords:Citrus wakonai Citropsis gabunensis conventional hybridization sexual hybrids wide-crosses late-acting lethality somatic hybridization protoplast fusion genera rutaceae plants
Subjects:Plant culture > Fruit and fruit culture
Science > Botany > Genetics
Deposited On:24 Sep 2014 05:30
Last Modified:24 Sep 2014 05:30

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