Characterization of monosomes in hexaploid oats using double monosomics

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概要

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• Nineteen double monosomics of Avena byzantina cv. Kanota (i.e. DMk-9 series) were obtained from 19 monosomics pollinated with another monosomic Mk-9. Several characteristics of the double monosomics lacking a chromosome 9 in common were examined. It was considered that a gene for awn formation is located on chromosome 8. There observed a non-allelic gene action for awn development between the epistatic suppressor gene on chromosome 9 and the promotor gene on chromosome 8. Selfed seed fertilities of DMk-9 series varied greatly, being divided into three fertility groups 0-10%, 22-39% and 45-65%. It suggests three different chromosome interactions between chromosome 9 and the other 19 chromosomes. The double monosomics which had high frequency of trivalent formations showed high selfed seed fertility in comparison with those which had high frequency of univalents. The progeny of double monosomics showing low selfed seed fertility had a tendency of nearing the euploid condition in chromosome number. From this study, 19 monosomes of hexaploid oats were identified.

著者

• Morikawa Toshinobu

  Laboratory Of Genetics And Plant Breeding College Of Agriculture

関連論文

• Characterization of monosomes in hexaploid oats using double monosomics
• Micropropagation using Leaf Blades in Genus Lycoris
• Cytological Studies on Selfed Plants and Interspecific Crosses Produced in Four Species of Genus Lycoris (Amaryllidaceae)
• Inheritance of a Thermo-sensitivity Gene Controlling Flower Initiation in Sorghum
• Cytological and morphological variations in wild populations of Avena canariensis from the Canary Islands
• 野生エンバク(Avena fatua)の矮性に関する遺伝子分析〔英文〕
• Transfer of Mildew Resistance from the Wild Oat Avena prostrata into the Cultivated Oat
• CYTOGENETICAL CHARACTERISTICS OF DOUBLE MONOSOMICS OBTAINED FROM INTERCROSSES BETWEEN MONOSOMIC LINES IN KANOTA OATS

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