巻号一覧
35 巻, 5-6 号
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Minoru SHIMOTSUMA, Yoshito OGAWA1960 年 35 巻 5-6 号 p. 143-152
発行日: 1960年
公開日: 2007/05/21
ジャーナル フリーThe bitter substance in the fruits of C. colocynthis and C. vulgaris was analysed by chromatographic technique. Only one compound was detected in the ripe fruit of C. No. 1 (2x & 4x). The junior author identified it as “Citbittol A”. The amount of bitter substance in the ripe fruit of tetraploids was nine times as high as that of diploids.
In unripe fruits of C. No. 1 (2x), however, seven new bitter compounds were detected. These newly found bitter substances were called “Citbittol B, C, D, E, F, G and H”. The amount of bitter substance in unripe fruits was higher than that of the ripe fruits. The bitter substance in the unripe fruit decompose gradually as the fruits ripen. Four compounds were detected in the ripe fruits of V. No. 2 and 4. Although C. No. 4 belongs to C. colocynthis, bitter substances was not found in the ripe fruits in this exceptional case.
Ripe fruits of di-, tri- and tetraploid interspecific hybrids obtained from all possible cross combinations among diploid and tetraploid strains of C. No. 1 and V. No. 1 contain a higher amount of bitter substance in the ripe fruit than C. No. 1.
The segregation ratio 3 (bitter): 1 (non-bitter) for F2 population and 1 (bitter): 1 (non-bitter) for the testcross was indicated by chromatographic analysis of bitter substance in the ripe friuts of each individual. From this evidence, bitterness in the genus Citrullus was concluded to have monohybrid inheritance with dominance of the bitter character.抄録全体を表示PDF形式でダウンロード (938K) -
Takumi TSUCHIYA, Jiro HAYASHI, Ryûhei TAKAHASHI1960 年 35 巻 5-6 号 p. 153-160
発行日: 1960年
公開日: 2007/05/21
ジャーナル フリーThirty five populations of F2 and 5 of F3 families were tested for disomic and/or trisomic inheritance. In these experiments 10 gene pairs were tested in 6 primary simple trisomic types with the following results:
1. Blbl gene pair in 5 trisomic types of Bush, Slender, Pale, Robust, Purple, Brbr pair in Pale, and Rr in Purple and Semi-erect were newly tested for segregation ratios. Only Blbl in Robust and Rr in Semi-erect showed the trisomic ratio while in the others the disomic ratio was observed.
2. Out of 35, 27 F2 populations tested in the present experiment showed to agree very well with the previous results obtained from the same combinations (cf. Tsuchiya 1956, 1959): Namely, Nn (III), and Fcfc (VII) in Bush, Vv (I) in Slender and Uzuz (VI) in Pale showed to be fitted very well with the expected trisomic ratio in both the diploid and the trisomic portions. The other showed disomic segregation.
3. Segregation of Kk gene pair was tested in 5 F3 families derived from trisomic F2 plants from the Robust×Colsess V cross. The results showed that the egregation of Kk gene pair in both diploid and trisomic portions occurred in the trisomic ratio. Thus, the Robust trisomic for chromosome 4 (Burnham's e) showed to carry the genetic linkage group IV on its extra chromosome.
4. From all these findings the relationships between the seven primary simple trisomic, types and the seven known genetic linkage groups of barley have been established (Tables 5 and 6).抄録全体を表示PDF形式でダウンロード (732K) -
Haruo KUROKAWA1960 年 35 巻 5-6 号 p. 161-166
発行日: 1960年
公開日: 2007/05/21
ジャーナル フリーThe three races, A. B, and C composing Drosophila auraria have been discussed with regard to sexual isolation and speciation problem.
Intraracial sexual isolation between different geographic strains of race C, regardless of the strains used, is not significant, while interracial sexual isolation, in every case between A and B, A and C, and B and C, is significantly demonstrated.
Genetically diverged distances in relation to the coeffcients of joint isolation and some characteristics of the three races are respectively illustrated in the Fig. 1.
It can hardly be concluded from the morphological, physiological and distributional standpoints, that, of the members belonging to species auraria, race B would be an original form of them.抄録全体を表示PDF形式でダウンロード (610K) -
III. テンナンショウ (Arisaema japonicum) 抽出液による 花粉母細胞分裂の異常大野 林二郎, 谷藤 茂行1960 年 35 巻 5-6 号 p. 167-176
発行日: 1960年
公開日: 2007/05/21
ジャーナル フリーArisaema japonicum 塊茎の水抽出液を Trillium kamtschaticum の花粉母細胞 (leptotene, diplotene, diakinesis, および metaphase) に作用せしめて, 次の知見が得られた。A) 処理直後の観察。
1) 前期における核が, 均一なる染色質の塊りとなる現象がみられた。
2) 前期の終り頃の染色体の clumping, および第1中期での染色体の clotting がみられた。
3) 第1中期および後期の染色体の stickiness, および over-colltraction が出現した。
B) 処理後時間の経過せるものでの観察。
1) 第1終期において, 2核 (2極染色体群) の接近せる異常型 (aggregative 型) が高頻度にみられた。
2) 第1後期において, 染色体の不均等分離現象が少数ながらみられた。
3) 第1終期において, 1個の一価染色体の遅滞が多く出現した。dihydro-streptomycin sulfate 処理の結果 (Ohno & Tanihuzi 未発表) と比較して論じられた。
4) 第1終期において, 1極側の5本の染色体が収斂しない像, および5本中の 2～3 個が極群より離脱し散在する像 (dispersive I) が観察された。さらにすべての一価染色体(10個) が一様に細胞内に散在する像 (dispersive II) もみられた。
5) 第1終期におけるを遅滞染色体の出現様式, および4) に述べられた異常型のそれ等から, この抽出液の作用は完成された極の機能を阻害または停止させるものと推論した。
6) 第1終期および中間期, さらに第2中期での隔膜形成の異常も観察された。抄録全体を表示PDF形式でダウンロード (1298K)
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