Observation of Parthenocarpy in Actinidia Arguta Selection 'Issai'

Mizugami, T.; Kim, J.G.; Beppu, Kenji; Fukuda, Tetsuo; Kataoka, Isao

doi:10.17660/actahortic.2007.753.22

Cited by 19 publications

(6 citation statements)

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“…It has been proposed that stamens of pistillate flowers aid reproduction by attracting pollinating insects (Kawagoe and Suzuki 2004). Actinidia species can be considered morphologically as appearing to be androdioecious but functionally as cryptically dioecious (Schmid 1978;Kawagoe and Suzuki 2004;Mizugami et al 2007). …”

Section: Dioecismmentioning

confidence: 99%

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Botanical Description

Ferguson

2016

Compendium of Plant Genomes

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Kiwifruit belong to Actinidia, a genus comprising more than 50 species found mainly in southern China. All members of the genus are climbing plants and are functionally dioecious. The fruit are berries with seed embedded in a fleshy pericarp. The kiwifruit of commerce are large-fruited selections of two varieties of the species, A. chinensis Planch.: A. chinensis var. chinensis and A. chinensis var. deliciosa (A. Chev.) A. Chev., formerly known as A. deliciosa (A. Chev.

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Section: Dioecismmentioning

confidence: 99%

“…Parthenocarpy has been observed in one heptaploid (7x) clone but not in other clones of A. arguta 'Issai', a generic term used in Japan denoting a number of clones characterised by precocious flowering (Mizugami et al 2007). Parthenocarpy can be induced in A. chinensis var.…”

Section: Dioecismmentioning

confidence: 99%

Botanical Description

Ferguson

2016

Compendium of Plant Genomes

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“…The abundant ploidy races might be attributed to the prevalence of 2n gametes within the Actinidia genus (Chat and Dumoulin 1997;Mizugami et al 2007;Seal et al 2012), and interploid crosses could be deemed to be a successful strategy for transferring the genomes of elite fruiting cultivars to higher ploidy levels by unilateral sexual polyploidization. Likewise, ploidy manipulation (chromosome doubling) could have considerable potential as such in exploring the polyploid advantage of fruit characters (e.g., the fruit size of autotetraploid var.…”

Section: The Genetic Variations Generated By Interploid Crossesmentioning

confidence: 99%

Genetic diversity in kiwifruit polyploid complexes: insights into cultivar evaluation, conservation, and utilization

Liu

et al. 2014

Tree Genetics & Genomes

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Understanding the extent and partitioning of crop genetic diversity is necessary for conserving and utilizing their genetic potentials for breeding. In the present study, fluorescence-labeled amplified fragment length polymorphism markers were used to characterize the genetic diversity and relationships of 79 cultivars and also of 122 F1 hybrids which resulted from six kiwifruit interploid crosses. A high level of mean genetic diversity was detected (Hj > 0.22) for all cultivars investigated, without significant differences among diploids (2x), tetraploids (4x), and hexaploids (6x). This suggested that no significant genetic erosion occurred in these cultivars, which were directly selected from natural resources or created from crosses. The Unweighted Pair Group Method with Arithmetic Mean analysis of the genetic dissimilarity between cultivars showed three main groups mostly based on their three ploidy levels. Among these, the red-fleshed cultivars which were originally derived from 'Hongyang' clustered into one subgroup of group I, suggesting their unique genetic background despite they were marked as different cultivars used in the current kiwifruit industry. By analyzing the genetic variation of hybrids with variable ploidy levels, our genetic analyses further revealed that interploid crosses can increase the genetic diversity of F1 offsprings, especially from the parental combinations of 6x-2x and 6x-4x, in which both parents showed significant differences in morphology and genetic backgrounds. Based on these findings, strategies were proposed for the conservation and utilization of the current kiwifruit genetic resources for future breeding programs.

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“…In Actinidia, all known species are dioecious (Fraser et al, 2009). Hence, cross pollination is generally required for fruit setting, although some selections of A. arguta are reported to be self-fruitful, or parthenocarpic (Mizugami et al, 2007).…”

Section: Introductionmentioning

confidence: 99%