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The Genetically Unstable Dwarf Locus in Azuki Bean (Vigna angularis (Willd.) Ohwi & Ohashi).
MedLine Citation:
PMID:  21724968     Owner:  NLM     Status:  Publisher    
We characterized a spontaneous dwarf mutant showing extremely short internodes and dark green leaves originating from azuki bean (Vigna angularis (Willd.) Ohwi & Ohashi) cultivar "Erimo-shouzu." F(1) plants of 3 cross combinations between the dwarf mutant and several representative wild-type plants, Erimo-shouzu, V. angularis accession Acc2265 and wild relative V. riukiuensis accession Acc2482, supported the dwarf genotype being recessive. In a total of 3328 F(2) progeny of these 3 crosses, 65 dwarfs (2.0%) and 5 chimeric dwarfs (0.2%) segregated and the remainder were wild-type plants (97.8%). In F(3) progeny derived from self-pollinated dwarf F(2) plants, we observed wild type (54.3%), dwarf (39.1%), and chimeric dwarf (6.5%) plants. Two types of chimeric plants were observed: dwarf branches on the axils of wild-type plant stems and wild-type branches on the axils of dwarf stems. In 21 dwarf F(2) plants, the dwarf trait cosegregated with simple sequence repeat marker CEDG154 on chromosome 4. Conversely, homozygote F(2) plants at this chromosomal segment from the dwarf mutant frequently (>90%) expressed the wild-type phenotype. We concluded that the dwarf phenotype is mitotically and meiotically inheritable and controlled by a single genetically unstable locus, designated Azuki Dwarf1 (AD1), which converts between 2 phenotypic states bidirectionally.
Satoshi Aoyama; Kazumitsu Onishi; Kiyoaki Kato
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-7-1
Journal Detail:
Title:  The Journal of heredity     Volume:  -     ISSN:  1465-7333     ISO Abbreviation:  -     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-7-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0375373     Medline TA:  J Hered     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
the Agricultural Research Department, Kamikawa Agricultural Experiment Station, Hokkaido Research Organization, Kamikawa, Hokkaido, Japan.
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