巻号一覧
41 巻, 4 号
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吉武 成美1966 年 41 巻 4 号 p. 259-266
発行日: 1966年
公開日: 2007/05/21
ジャーナル フリー日本各地から採集したクワコ (Theophila mandarina L.) を用いて, その血液, 皮膚, 中腸および絹糸腺などのエステラーゼ並びにホスハターゼ活性を電気泳動的に解析し, それらの地域差について比較検討した. その結果血液酸性ホスハターゼ型に関しては関東型と関西型 (名古屋以西) に分けて考えることもできるが, 他の酵素についてはその地域的差異が認められなかった.
一方クワコとカイコとの間におけるこれら酵素型の相違をみると, それらを支配する遺伝子の出現頻度は明らかに相違するが, 遺伝子の種類については両者に連続性があることが認められた. またある種のカイコの皮膚, 絹糸腺および中腸などに存在する1, 2の酵素がクワコのそれの約2倍の活性を有することが電気泳動と定量の結果から明らかにされた. このような2倍の活性を有する遺伝子の生ずる機構は多分不均等交叉による遺伝子の重複に起因しているものと考えられる. クワコからカイコの進化は単なる突然変異の集積によると考えるよりも, 遺伝子の重複により多く原因しているものと考察した.抄録全体を表示PDF形式でダウンロード (845K) -
MASAHARU EGUCHI, NARUMI YOSHITAKE1966 年 41 巻 4 号 p. 267-273
発行日: 1966年
公開日: 2007/05/21
ジャーナル フリーElectrophoretic variations in the integument esterase of the silkworm, Bombyx mori L., were found. The esterase was classified into the six fundamental isozyme types, O, A, B, C, AB and AC. The mode of inheritance of these isozymes was studied and confirmed that they are controlled by codominant alleles, IesO, IesA, IesB, IesC, IesAB and IesAC respectively. The esterase activities in individuals with compound types, AB or AC, were approximately twice as high as that in the single band type. These individuals seemed to be homozygotes for the genes IesAB or IesAC, which might be occurred by the duplication of primitive genes, IesA and IesB or IesA and IesC.
Frequencies of these codominant genes in the silkworm population were calculated from the results of 202 strains investigated. The frequencies of the Ies genes C, B, AC, AB, O, and A were 0.44, 0.25, 0.21, 0.08, 0.01 and 0.01, respectively.抄録全体を表示PDF形式でダウンロード (1231K) -
KAZUO SAITOH1966 年 41 巻 4 号 p. 275-278
発行日: 1966年
公開日: 2007/05/21
ジャーナル フリーThe chromosomes of Archips fuscocupreana and Pandemis heparana (Tortricidae, Lepidoptera) were studied in spermatocytes. In addition, the chromosomes of Archips breviplicana and Adoxophyes orana of the same family were investigated. The chromosome numbers (n) of the four tortricid species here considered were presented in Table 1, together with those already reported.抄録全体を表示PDF形式でダウンロード (285K) -
箕作 祥一1966 年 41 巻 4 号 p. 279-282
発行日: 1966年
公開日: 2007/05/21
ジャーナル フリー稲の体細胞染色体の観察に際し, 根端細胞の細胞膜をペクチナーゼで処理することにより, 従来報告されたものよりも一段と鮮明な結果が得られた.
農林8号は, 旭と銀坊主の交配によりえられた品種と解するのが核型上適当のように思われる.
外国野生稲 O. grandiglumis は, 核型の上から, 日本の栽培稲とはかなり異なったもののようである.
45%醋酸による分染でえられる染色体の縞を, 普通の核型分析に加味することによって, 微細な核型分析を行なう可能性が生じた.抄録全体を表示PDF形式でダウンロード (329K) -
ツツジ亜属植物の染色体数と核型箕作 祥一, 石井 勇1966 年 41 巻 4 号 p. 283-289
発行日: 1966年
公開日: 2007/05/21
ジャーナル フリー1. 著者らはツツジ科 Rhododendoron 亜属植物数種の染色体数と核型を決定した.
2. 材料は8-オキシキノリンで前処理しアルコール酢酸で固定したのち, 60°Cの IN-HCl で4分間加水分解, 1%酢酸オルセイン中でおしつぶしをおこなった.
3. Rhododendoron 亜属植物の体細胞染色体数と核型は次のとおりであった (英文 Abstract 参照).
4. R. Kaempferi, R. kiusianum および R. Oomurasaki は核型の類似点から同一の祖系からそれぞれ変化したものと推察される.
5. R. obtusum は種子形成が悪く R. indicum は不稔である. その原因はてれらの種の核型が他のものと異なっているからである. 特に前者の Cm, 後者 tAst, および tDsm の染色体がこれらの現象に関与しているのではないかと思われる.抄録全体を表示PDF形式でダウンロード (1960K) -
YOSHIHISA FUJIO, KYOJI KONDO1966 年 41 巻 4 号 p. 291-298
発行日: 1966年
公開日: 2007/05/21
ジャーナル フリー1. It was found that the tissue hemagglutinin (THA) obtained from mouse fibroblast L cells treated with trypsin agglutinated only chicken red cells agglutinable with vaccinia hemagglutinin.
2. Genetic analysis showed that the agglutinogen designated “Th” was controlled by a single incomplete dominant autosomal gene.
3. “Th” agglutinogen appeared during 2 weeks after hatching and the hemagglutination scores rose up to a high level at 8 weeks after hatching.
4. The hemagglutination scores in the heterozygous type rose to the similar level to those in the homozygous type and fell down to a lower level than the scores of the homozygous type after 10 weeks of age.抄録全体を表示PDF形式でダウンロード (723K) -
SHIGEMITSU TANO1966 年 41 巻 4 号 p. 299-308
発行日: 1966年
公開日: 2007/05/21
ジャーナル フリー1) 132 second chromosome recessive lethals of Drosophila melanogaster selected for the region of 55.1 on the second chromosome by using overlapping deficiencies.
2) Nine lethal genes fell in this region. Three of them were allelic each other and one was assumed to be a small deficiency. The three allelic lethals were extracted from the different original populations.
3) Recombination analysis among these lethals was performed and maximum distance among these lethals was 0.00876 map unit. Distance between two recessive outside markers of this cluster was estimated to be 0.03 map unit based on cis- and trans-phase recombination tests.抄録全体を表示PDF形式でダウンロード (890K) -
2. CHROMOSOME PAIRING IN THE INTERSPECIFIC HYBRID WITH THE ABC GENOMESTAIRA KATAYAMA1966 年 41 巻 4 号 p. 309-316
発行日: 1966年
公開日: 2007/05/21
ジャーナル フリーTwenty-five hybrids between forms possessing the A genome (O. sativa, O. sativa f. spontanea, O. breviligulata, O. glaberrima, O. perennis and O. formosana) and those with the BC genomes (O. minuta and O. punctata) were used as materials.
From 778 flowers pollinated, 233 seeds (almost all of them were imperfect) of various degrees of development were produced. One hundred grains chosen at random from 20 cross-combinations were sown on the culture medium in test tube. Sixteen true F1 plants were studied cytologically.
At pachytene stage, 12 bivalents and 12 univalents were observed. At diakinesis and metaphase I, the number of bivalents ranged from 3 to 12 or from 1 to 11, respectively.
From the previous results of pachytene analysis in the F1 hybrid of the cross, O. sativa×O. officinalis (Shastry et al. 1960, 1961; Katayama 1965), and of pachytene analysis and of bivalent formation at diakinesis and at metaphase I in the F1 hybrids, O. sativa ×O. minuta and O. sativa×O. punctata, the author could conclude that the C genome of O. minuta and O. punctata is partially homologous to the A genome of O. sativa.抄録全体を表示PDF形式でダウンロード (1275K) -
3. CHROMOSOME PAIRING IN THE INTERSPECIFIC HYBRID WITH THE ACD GENOMESTAIRA KATAYAMA1966 年 41 巻 4 号 p. 317-324
発行日: 1966年
公開日: 2007/05/21
ジャーナル フリーIn order to elucidate the relationship between the A and C genomes, 16 F1 hybrids between the A (O. sativa, O. sativa f. spontanea, O. sativa v. fatua, O. perennis O. breviligulata and O. glaberrima) and CD (O. alta, O. latifolia and O. grandiglumis) genomes were studied cytologically. About 12 completely paired chromosomes were observed at pachytene stage, 0-12 bivalents at diakinesis, and 3-11 at metaphase I. These findings suggest that one of the CD genomes in O. latifolia is partially homologous to the A genome in O. sativa.
On the basis of the pachytene analysis in the F1 hybrid, O. sativa×O. officinalis (Shastry et al. 1960, 1961; Katayama 1964, 1965a) and the results obtained from the F1 hybrids, O. sativa ×O. minuta and O. sativa×O. punctata (Katayama 1965b, unpubl.), the author postulates that bivalents observed in the F1 hybrids, O. sativa×O. latifolia and O. sativa×O. grandiglumis, were derived from partial homology between the A and C genomes.
Judging from these results so far obtained cytologically in the meiosis of the F1 hybrids between the genomes AA and CC, AA and BBCC and AA and CCDD, the author offers the species relationship in the section Sativa as shown diagrammatically in Figure 5.抄録全体を表示PDF形式でダウンロード (1103K) -
YONG KYUN PAIK1966 年 41 巻 4 号 p. 325-333
発行日: 1966年
公開日: 2007/05/21
ジャーナル フリー1. Three samples of Korean Drosophila melanogaster from two localities were analyzed for viability factors and specific visible mutations in 474 second and 539 third chromosomes by the use of Cy and TM3, Ser balancer stocks, respectively. Lethals were tested for their allelism in both autosomes.
2. The combined frequencies of lethals and semilethals ranged 13.0 to 16.1% among second and 16.3 to 20.0% among third chromosomes, but with no significant differences between collections for each autosome.
3. The two autosomes differed significantly in three viability categories (incidence in lethals, subvitals supervitals) of the five, considered when chromosomes II and III data are combined. The meaning of the higher incidence of lethals in the third chromosome is not clear.
4. Lethal allelism rates were similar among both autosomes in both intra- and inter-population tests. There was a similar allelism rate for the totals of chromosome II vs. III, although the rate differed significantly from population to population. The intra population allelism rates for ohromosomes II+III ranged from 0.6 to 2.6%.
5. In S62, lethal concentration was preserved at fairly constant level around 16% during a season, while both it's breeding size and it's allelism underwent fluctuations.
6. The estimated effective number of breeding individuals are about 2400 in S62g, 17500 in S62j and 3400 in K62i. These figures apparently indicate that the present populations are much larger than that studied in 1957-1958 in the southern part of Korea, but are much smaller than those in the American and Mediterranian populations.
7. The recessive visibles, bw or or and p, are found to be common in the present populations. The distribution of these visibles in the three populations was random.
8. Two “Cy-lethals” were also detected in S62j.抄録全体を表示PDF形式でダウンロード (883K)
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