巻号一覧
54 巻, 3 号
選択された号の論文の7件中1～7を表示しています
- |<
- <
- 1
- >
- >|
-
KENJIRO KINUGAWA, KAZUKO HIRAMATSU, YOSHIHIRO TSUJIMOTO1979 年 54 巻 3 号 p. 143-155
発行日: 1979年
公開日: 2007/05/21
ジャーナル フリーPollen grains of a normal strain were irradiated with ultraviolet light (5.1×103ergs/mm2 average), then pollinated to the pertinent tester plants with recessive marker genes (ws3, lg1, su1, o2, ra1, sh1, wx and c1). The chromatid breaks were estimated by the dominant marker losses that appeared in X1 kernels and in X1 plants. The marker losses occurred at similar rates to those which have been reported so far. The losses of C1, Sh1, Wx on chromosome 9 were analyzed in detail. The results indicate frequent occurrence of interstitial chromosome deficiencies, although they have seldom been reported as yet with ultraviolet light. The points of breakage seemed to be nonrandomly distributed along the chromatid. The relative sensitivity of selected regions of chromosome 9 differed from each other, and the region proximal to Wx gave the highest among four regions examined. A possible key mechanism for inducing chromatid breaks with ultraviolet light was discussed.抄録全体を表示PDF形式でダウンロード (1283K) -
XII. ELECTROPHORETIC ESTIMATION OF PROGENITOR OF THE C GENOME SPECIES CONSTITUTING TETRAPLOID-PUNCTATA (BBCC)JINN LIH CHERN, TAIRA KATAYAMA1979 年 54 巻 3 号 p. 157-164
発行日: 1979年
公開日: 2007/05/21
ジャーナル フリーBy using starch gel electrophoresis, the zymograms of acid phosphatase and peroxidase in the leaf extracts were examined, and the phylogenetic relationships between diploid parental species, their F1 plants, synthesized amphiploids, and natural tetraploid species belonging to Oryza officinalis complex were postulated on the basis of comparisons of zymograms. The similarity index (s-value; Sheen 1972) was computed in all possible combinations of 17 strains tested. The s-values found between the tetraploid varieties of O. punctata (W1024 and W1145) on the one hand and synthesized amphiploids 4x-3 (punctata×collina), 4x-1137 (intermediate×punctata), and 4x-1(punctata× eichingeri), O. minuta (W0016) and O. malampuzhaensis (W1159) on the other were 91%, 96%, 48%, 31-36% and 52%, respectively. The tetraploid punctata strains thus showed much closer relationships with the synthesized amphiploids than with other tetraploid species, i.e., O. minuta and O. malampuzhaensis. This suggests that the progenitor of O. eichingeri and an intermediate punctata-eichingeri form would also be the progenitor of species with the C genome which was a component of tetraploid strains of O. punctata (BBCC).抄録全体を表示PDF形式でダウンロード (887K) -
MITSURU MINEZAWA, KAZUO MORIWAKI, KYOJI KONDO1979 年 54 巻 3 号 p. 165-173
発行日: 1979年
公開日: 2007/05/21
ジャーナル フリーElectrophoretic survey of Hbb alleles in the Japanese wild mouse, Mus musculus molossinus, revealed a high incidence of Hbbp, the overall frequency of which in Japan was 56.6%. The Hbbd allele was also common (42.7%) but Hbb8 was rare (0.7%). Geographically, Hbbp allele is prevalent in the central regions of Japan, while Hbbd allele is more common in the peripheral regions. One of the possible explanation of this geographical distribution is the plural migration of wild mouse into Japan through either two southern routes and one northern route. On the global distribution profile of the three alleles, the house mouse seems to separate into two groups, Asian group and Western group, and M. m. molossinus belongs to Asian group.抄録全体を表示PDF形式でダウンロード (755K) -
YASUO NAKAI1979 年 54 巻 3 号 p. 175-189
発行日: 1979年
公開日: 2007/05/21
ジャーナル フリーEsterase isozymes in two kinds of synthesized hexaploid wheat and its parental strains were analyzed by the isoelectric focusing method using pH 6-8 carrier ampholite. In present-day hexaploid wheat, three similar patterns of esterase isozymes were found. The large number of them had nine esterase bands, which are controlled by the genes on homoeologous chromosomes 3. On the other hand, the parental species of the hexaploid, also, showed inter- as well as intraspecific variations. Seven different zymograms were observed in the tetraploid wheats, among which type 4 distributed most widely in tetraploid species. Moreover, most bands of this zymogram were commonly found in the zymograms of common wheat. Therefore, the donor of AB genome to common wheat seems to have had this zymogram. The Tetra-Canthatch (AABB) which the D genome was removed from Canthatch (AABBDD) had the same zymogram, the type 4, of present-day tetraploid species. The type 4 of the esterase zymogram was, also, posturated as AB genome donor from this evidence. Another parent, Ae. squarrosa, involved three different types of zymograms. Artificially synthesized hexaploid wheat as the hybrids between type 4 tetraploid and three different types of Ae. Squarrosa were produced. Combinations between type 4 tetraploid and type 2 Ae. Squarrosa showed the same zymogram as compared with present-day hexaploid wheat. Therefore, type 2 Ae. Squarrosa was expected as D genome donor. Concerning the geographical distribution of type 2 Ae. Squarrosa, this type was found in the Elbruz Mountains along the coast of the Caspian Sea and Transcaucasus. Yet type 2 was not found in both countries, Pakistan or Afghanistan. From this evidence, birthplace of hexaploid wheat seemed to originate in the region from the south west Caspian belt to Transcaucasus.抄録全体を表示PDF形式でダウンロード (2564K) -
MAKOTO MUROFUSHI, TOSIHIDE H. YOSIDA1979 年 54 巻 3 号 p. 191-195
発行日: 1979年
公開日: 2007/05/21
ジャーナル フリーKaryological studies in four species of filefish belonging to Balistidae (Stephanolepis cirrhifer, S. japonicus, Paramonacanthus oblongus, and Navodon modestus) were carried out. Diploid chromosome numbers in Stephanolepis cirrhifer, S. japonicus, and Paramonacanthus oblongus, were 34, but in Navodon modestus, 40. All chromosomes in these four species were acrocentrics. In three species with 2n=34, the secondary constriction was found in one chromosome pair differing from each other.抄録全体を表示PDF形式でダウンロード (460K) -
HELAL AHMAD ANSARI, DIPIKA KAUL1979 年 54 巻 3 号 p. 197-202
発行日: 1979年
公開日: 2007/05/21
ジャーナル フリーThe basic karyotype of common green pigeon, Treron phoenicoptera consists of seven pairs of macrochromosomes and thirty pairs of microchromosomes. In the population examined by us, there exists an interesting chromosomal polymorphism. Chromosomes 1 and 2 both exist in a dimorphic form. The dimorphism in each case appears to be due to the presence of a pericentric inversion. Chromosome 1 exists in 1m and 1st conditions and chromosome 2 in 2st and 2m conditions. The significance of this intrapopulation variation is discussed.抄録全体を表示PDF形式でダウンロード (867K) -
II. GENE ARRANGEMENT ON THE THIRD CHROMOSOMESEIDO OHNISHI, ROBERT A. VOELKER1979 年 54 巻 3 号 p. 203-209
発行日: 1979年
公開日: 2007/05/21
ジャーナル フリーFive enzyme systems, NADP-dependent isocitrate dehydrogenase (Idh), phosphoglucomutase (Pgm), aldehyde oxidase (Aldox), malic enzyme (Men) and aldolase (Ald), were mapped on the third chromosome of Drosophila simulans. Idh and Pgm were mapped at 6.4 and 38.1 on the left arm, respectively. Aldox, Men and Ald were localized at 75.4, 87.7 and 124.6 on the right arm, respectively. On the basis of these findings, together with new mapping data of Idh and Est-C in D. melanogaster, the comparative genetics of the third chromosome of these two species were discussed.抄録全体を表示PDF形式でダウンロード (610K)
- |<
- <
- 1
- >
- >|