裁培稲とその近縁野生種における生殖的隔離〔英文〕
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概要
- 論文の詳細を見る
F1 plants from 2, 728 crosses in total, made between strains of Oryza perennis Moench, O. sativa L., O. breviligulata Chev. et Roehr., and O. glaberrima Steud., were observed in a survey of hybrid sterility and other developmental abortions which constitute reproductive barriers. All the F1 plants observed showed no significant disturbance in chromosome pairing. Reproductive barriers were found as follows:1) A low crossability due to deterioration of young F1 zygotes was found between the African form of perennis (subsp. barthii) and other taxa.2) Vegetative weakness of F1 plants was frequently found among strains of glaberrima and breviligulata as well as in their hybrids with barthii and other taxa. It was sporadical among perennis and sativa strains.3) F1 pollen sterility was found in various cross-combinations. Strains of glaberrima and breviligulata were inter-fertile with a few exceptions, and generally showed high F1 sterility with most perennis and sativa strains. Strains of perennis could be largely divided into four inter-sterile groups, Asian, African, American and Oceanian, suggesting that isolation by the ocean might have played an important role in phylogenetic differentiation. But some African (barthii) strains showed partial fertilities with others.4) Embryosac fertility was shown by the percentage of anatomically normal embryosacs, which was comparable to the rate of successful back-crossing. No F1 hybrids were completely embryosac-sterile. They were divided into two groups, one in which pollen and embryosac fertilities were correlated and the other in which pollen fertility was near zero but embryosac fertility was apparently higher. Crosses between perennis-sativa and breviligulata-glaberrima series and some other distant crosses belonged to the latter group, in which embryosac tetrads tended to deteriorate.
- 日本遺伝学会の論文
著者
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OKA Hiko-Ichi
National Institute of Genetics
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朱 耀源
National Institute of Genetics
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MORISHIMA Hiroko
National Institute of Genetics
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CHU YAW-EN
National Institute of Genetics
関連論文
- 栽培稲の進化機構に関する二,三の考察〔英文〕
- アジア産野生稲Oryza perennisと栽培稲O.sativaにおける雑種不稔関係〔英文〕
- 栽培稲における種形成の遺伝学的研究-1-O.sativaとO.glaberrimaの間のF1不稔性に関する遺伝分析〔英文〕
- 銅汚染がヒエ集団に及ぼす影響〔英文〕
- 野生稲および裁培稲の集団内遺伝変異〔英文〕
- The wild Oryza collection in National BioResource Project (NBRP) of Japan : History, biodiversity and utility
- Genome Size of Twenty Wild Species of Oryza Determined by Flow Cytometric and Chromosome Analyses
- Oryza perennis subsp.barthiiにおける部分自家不和合性〔英文〕
- 裁培稲とその近縁野生種における生殖的隔離〔英文〕
- Mating System and Genetic Structure of Natural Populations in Wild Rice Oryza rufipogon(US-JAPAN SEMINAR : EVOLUTIONARY STUDIES ON SEXUAL SYSTEMS IN PLANTS)
- 栽培稲の系統発生的分化-21-接合体的花粉不稔性--その遺伝的基礎とF2不稔性に示される品種間類縁関係〔英文〕
- 栽培稲の系統発生的分化〔英文〕-20-
- 各種の野生稲と栽培稲におけるパーオキシデース,酸フォスファテースおよびエステレースのアイソザイム変異の調査〔英文〕
- 突然変異系統における一般的および相対的大きさの変異 (稲における草型の遺伝的変異の分析-3,4-〔英文〕)
- Genetic studies of speciation in cultivated rice. 2. Character variations in backcross derivatives between Oryza sativa and O. graberrima: M-V linkage and key characters.:2. CHARACTER VARIATIONS IN BACKCROSS DERIVATIVES BETWEEN ORYZA SATIVA AND O. GRABERR