巻号一覧
30 巻, 5 号
選択された号の論文の7件中1～7を表示しています
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II. VARIOUS GROWTH HABITS IN LOCAL STRAINS OF THE BARLEY VARIETY “HOSOGARA NO. 2.”Kanji GOTOH1955 年 30 巻 5 号 p. 197-205
発行日: 1955年
公開日: 2007/05/21
ジャーナル フリーThe author has attempted to investigate the relations between various strains of“.osogara No. 2” with respect to growth habit.
The experimental results may be summarized as follows.
1. The percentage of plants with long auricles was a heritable character in each strain. Most of the plants of A-, C-and D-strains and a few plants of A-S-, E-, F- and G-strains had long auricles on the first leaf (Table 1).
2. As has been seen from Table 2, most of the plants of the X-group and none of those of the Z-group had hairs on the leaf sheath. In the D-strain hair development was strongly affected by environmental conditions. Short basale bristle (rachilla hair) gene (s) occurred mainly in the X-group, though in low frequency (Table 3).
3. It was found that the Z-group was homogeneous with respect to spring habit, which might be in this group of the character of the so-called “Wechseltyp”. A-S-strain of the X-group was of pure spring habit, though a few lines were recognized as belonging to Z type. A great deal of plants of the X-group were of fairly high degree winter habit, and those of the D-strain were of moderate winter habit.
4. A-strain contained the most abundant variability in all characters, especially in the date of heading. Its genetic constitution was estimated (Table 5). How such a variability could have been maintained is discussed.
5. In the A-strain, the correlation coefficient between date of heading and ear length, density of spike, and grain size were in 1953+0.5323**, +0.5173** and -0.3838**, respectively. This result suggests that variability in the date of heading must have been in this strain associated with the variations in the other characters examined.
6. It was found that the percentage of spring habit type in A-strain has been maintained around a certain mode during about 15 years.抄録全体を表示PDF形式でダウンロード (975K) -
Masahide KURITA1955 年 30 巻 5 号 p. 206-210
発行日: 1955年
公開日: 2007/05/21
ジャーナル フリー1. The karyotypes of the Allium-plants used in this study are as follows:
Allium Bouddhae Deb. form. giganteum (Makino) Araki K(2n)=16=14V+2JT
A. Togashii Hara K(2n)=16=10V+4J1+2J2t
A. Schoenoprasum L. var. foliosum Regel K(2n)=16=14V+2Jt
A. monanthum Maxim. K(2n)=32=22V+5J1+2J2+3J2t
A. Porrum L. K(2n)=32=24V1+V2+3V2cs+J+3Jcs
A. pseudo-japonicum Makino K(2n)=32=30V+2Jt
2. The chromosomes of the two varieties of A. Schoenoprasum (Kurita 1952, in this paper) seem to be fairly smaller than those of the other diploid form belonging to the race with the basic chromosome number 8. Thus, it seems possible to classify the race into two groups from the chromosome size.
3. There is no difference between the karyotype of A. pseudo-japonicum and that of A. Thunbergii.抄録全体を表示PDF形式でダウンロード (505K) -
1. 離反遺伝子を完全ホモにもつ個体の一次及び二次交配柴田 寛三1955 年 30 巻 5 号 p. 211-217
発行日: 1955年
公開日: 2007/05/21
ジャーナル フリーRelations between the behaviour or the function of the oppositional genes and the fertility in the artificial autotetraploids of Chinese cabbage (Brassica pekinensis Rupr.) were studied. In a diploid variety “Kanazawa-Hakusai”. four homozygous strains, S1S1, S2S2, S3S3 and S4S4, were analysed by the crossing experiments, and their correspondent autotetraploids were induced. The results of the selfing and the primary and the secondary crosses were as follows:
1. The plants with S1S1S1S1, S2S2S2S2, S3S3S3S3 and S4S4S4S4 showed a self-and cross-incompatibility in the intra-group crossings among individuals with the same genotype (Table 1).
2. All the possible cross combinations with SaSaSaSa×SbSbSbSb types showed compatibility (Table 2).
3. Among six plants with SaSaSbSb type four with S1S1S2S2, S1S1S3S3, S1S1S4S4 and S3S3S4S4, showed a self- and cross-incompatibility in the intra-group crossings among the individuals with the same genotype, while the remaining two with S2S2S3S3 and S2S2S4S4 were self incompatible (Table 3).
4. In nine cross combinations with SaSaSbSb×SaSaSaSa type cross incompatibility were recognized, while six with SaSaSaSa×SaSaSbSb type showed cross-compatibility (Table 4).
5. Nine combinations with SaSaSbSb×ScScScSc type were always cross-compatible (Table 5).
6. Fifteen combinations with SaSaSbSb×SaSaScSc type (Table 6) and five with SaSaSbSb×ScScSdSd type (Table 7) were olso compatible.抄録全体を表示PDF形式でダウンロード (854K) -
第1報 コバルト•ニッケルの増殖阻害と交叉耐性広田 幸敬1955 年 30 巻 5 号 p. 218-222
発行日: 1955年
公開日: 2007/05/21
ジャーナル フリー大腸菌k-12株を用いニッケルとコバルトの阻害作用を観察したが, ニッケル耐性菌とコバルト耐性菌は互に交叉耐性及び耐性の平行獲得を示し, 又コバルトとニッケルは菌に対して相加的な阻害を示すことから, コバルトとニッケルの増殖阻害作用には共通した機作があり更に両金属の増殖阻害作用に対する耐性の獲得も共通であると考えられる.抄録全体を表示PDF形式でダウンロード (470K) -
中島 吾一1955 年 30 巻 5 号 p. 223-226
発行日: 1955年
公開日: 2007/05/21
ジャーナル フリー1. In the present report, the result of a cytogenetical research on the F2 plant (TsphRF2) raised from T. sphaerococcum×S. cereale was described.
2. The external characters of TsphRF2 plant, length of spike, density of spikelets and number of flowers in a spikelet resembled closely to the F1, while length of culms and of awns, and number of spikelets per spike resembled closely to T. sphaerococcum than those of the F1 (Fig. 1, and Table 1).
3. The TsphRF2 plant has somatic chromosomes the number of which is less than the number of amphidiploid by 15 chromosomes.
4. At the heterotypic metaphase in meiosis of PMC'S of the TsphRF2, 10_??_17 bivalents or 7_??_21 univalents were observed (Figs. 3-9). The frequency of bivalents and univalents in PMC'S was shown in Table 2.
5. Both male and female gametes of the TsphRF2 plant were completely sterile.
6. It seems to me that the majority of chromosomes of the F2 are due to T. sphaerococcum, considering from the external characters of the F2.抄録全体を表示PDF形式でダウンロード (533K) -
辻田 光雄1955 年 30 巻 5 号 p. 227-235
発行日: 1955年
公開日: 2007/05/21
ジャーナル フリー1. +×H/Kp の交雑において組換により, HKp/++ の個体をえた. 組換価は0.7%であつた. H+/Kp と HKp/++ との表現型は異なる.
2. +×HKp/++ の交雑においても, 組換により僅かながら H と Kp とが分離する. この場合の組換価も亦0.7%であつた.
3. HKp/++ 同志の交配により, HKp/HKp, HKp/++ および正常の個体が分離する. HKp ホモの個体の表現型は HKp ヘテロの個体のそれと異なり, 「い形」斑紋が第4, 5, 6環節に重複して現われる.
4. +×HKp/HKp の交雑では HKp ヘテロの個体のみを生ずる.
5. HKp/++ の表現型が H/Kp のそれと異なつているのは, 遺伝子の位置効果によるものと見做される.
6. いわゆる E 複対立遺伝子群は真の複対立遺伝子群ではなく擬似対立遺伝子群に属するものと考えられる.
7. H と Kp とのいずれが第VI染色体の端部に座位するかを見るため, 両遺伝子と Nc との組換価を調べたが, H と Nc との交叉価の算定が困難なため, 目的を達しえなかつた.抄録全体を表示PDF形式でダウンロード (1085K) -
VIII. サンデレーと他の3種との交配 F1 の減数分裂竹中 要1955 年 30 巻 5 号 p. 236-241
発行日: 1955年
公開日: 2007/05/21
ジャーナル フリーN. longiflora (n=10), N. plumbaginifolia (n=10), N. repanda (n=24) and N. suaveolens (n=16) were crossed with N. Sanderae as the pollinator. The crosses N. longiflora×N. Sanderae, N. plumbagi- nifolia×N. Sanderae and N. suaveolens×N. Sanderae gave some seeds.
In external characters, the F1 longiflora-Sanderae and F1 plumbaginifolia-Sanderae are intermediate between the respective parents but the flower colors are red, resembling the fathers. F1 longiflora-Sanderae was examined by Christoff (1928) and Isakovich (unpublished, after Kostoff 1941-43), but F1 plumbaginifolia-Sanderae has never been reported, so far as I know. The morphology of F1 suaveolens-Sanderae agrees with that of Kostoff's description of the same hybrid.
At diakinesis in the PMC's of F1 longiflora-Sanderae, the chromosome conjugation 9II+1I, 1III+8II and 1III+7II+2I were most frequent. At the first metaphase the chromosome conjugation 9II+1I was mostly observed, followed by the conjugations 1III+7II+1I, 1III+8II and 8II+3I, in the cited order. The chromosome conjugations agree with Isakovich's findings in the same hybrid (after Kostoff 1941-43). The meiotic chromosome behaviour of F1 plumbaginifolia-Sanderae is the same as in F1 longiflora-Sanderae. According to the observations on the meiosis in the F1 hybrids longiflora-Sanderae and plumbaginifolia-Sanderae, it is assumed that there are some homologous or semihomologous chromosomes between the Sanderae genome on one hand and the longiflora or plumbaginifolia genome on the other.
At the first metaphase of F1 suaveolens-Sanderae, 1-7 bivalents, mostly 3-4, were found. Kostoff (1941-43) observed 0-4 bivalents in the same hybrid. The cause of the difference between the author's and Kostoff's observations has not been studied. And also it was undetermined whether the chromosome conjugations in this hybrid were caused by intergenomic or intragenomic affinity.抄録全体を表示PDF形式でダウンロード (722K)
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