دورية أكاديمية
Meiotic chromosome pairing in Actinidia chinensis var. deliciosa.
| العنوان: | Meiotic chromosome pairing in Actinidia chinensis var. deliciosa. |
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| المؤلفون: | Mertten D; The New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland, 1142, New Zealand., Tsang GK, Manako KI, McNeilage MA, Datson PM |
| المصدر: | Genetica [Genetica] 2012 Dec; Vol. 140 (10-12), pp. 455-62. Date of Electronic Publication: 2012 Nov 30. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Kluwer Academic Country of Publication: Netherlands NLM ID: 0370740 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1573-6857 (Electronic) Linking ISSN: 00166707 NLM ISO Abbreviation: Genetica Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Dordrecht : Kluwer Academic Original Publication: s'-Gravenhage. |
| مواضيع طبية MeSH: | Actinidia/*genetics , Chromosome Pairing/*genetics , Fruit/*genetics , Meiosis/*genetics, Alleles ; Microsatellite Repeats ; Pollen/genetics ; Tetraploidy |
| مستخلص: | Polyploids are defined as either autopolyploids or allopolyploids, depending on their mode of origin and/or chromosome pairing behaviour. Autopolyploids have chromosome sets that are the result of the duplication or combination of related genomes (e.g., AAAA), while allopolyploids result from the combination of sets of chromosomes from two or more different taxa (e.g., AABB, AABBCC). Allopolyploids are expected to show preferential pairing of homologous chromosomes from within each parental sub-genome, leading to disomic inheritance. In contrast, autopolyploids are expected to show random pairing of chromosomes (non-preferential pairing), potentially leading to polysomic inheritance. The two main cultivated taxa of Actinidia (kiwifruit) are A. chinensis (2x and 4x) and A. chinensis var. deliciosa (6x). There is debate whether A. chinensis var. deliciosa is an autopolyploid derived solely from A. chinensis or whether it is an allopolyploid derived from A. chinensis and one or two other Actinidia taxa. To investigate whether preferential or non-preferential chromosome pairing occurs in A. chinensis var. deliciosa, the inheritance of microsatellite alleles was analysed in the tetraploid progeny of a cross between A. chinensis var. deliciosa and the distantly related Actinidia eriantha Benth. (2x). The frequencies of inherited microsatellite allelic combinations in the hybrids suggested that non-preferential chromosome pairing had occurred in the A. chinensis var. deliciosa parent. Meiotic chromosome analysis showed predominantly bivalent formation in A. chinensis var. deliciosa, but a low frequency of quadrivalent chromosome formations was observed (1 observed in 20 pollen mother cells). |
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| تواريخ الأحداث: | Date Created: 20121201 Date Completed: 20130718 Latest Revision: 20211021 |
| رمز التحديث: | 20240829 |
| DOI: | 10.1007/s10709-012-9693-2 |
| PMID: | 23196697 |
| قاعدة البيانات: | MEDLINE |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 1573-6857 |
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| DOI: | 10.1007/s10709-012-9693-2 |