Jelisava ADAMIČ and Marija ALAČEVIĆ
INDUCTION OF SPORULATION IN CANDIDA ALBICANS (SYRINGOSPORA ALBICANS) BY MEANS OF N-METHYL-N'-NITRO-N-NITROSOGUANIDINE [Abstract]
Milka ŠOPOVA, D. EFINSKI, B. APOSTOLOVSKI and B. RISTEVSKI
FAMILIAL TRANSMISSION OF AN EXTRA METACENTRIC CHROMOSOME [Abstract]
Petković, I. and Zrinjski, B.
ASSOCIATION OF HUMAN ACROCENTRIC CHROMOSOMES [Abstract]
Emilija STOJIMIROVIĆ, Danica KORAĆ, Branislava AJDARIĆ, B. GARZIČIĆ, Radmila KONEČNI, I. VUKOVIĆ and Slobodanka MILETIĆ
LE CHROMOSOME Y DE GRANDE TAILLE CHEZ LES ENFANTS AVEC LES MALFORMATIONS CONGENITALES [Abstract]
M.M. HUSSEIN and M.A. ABOBAKR
SECONDARY ASSOCIATION IN BRASSICA OLERACEA L. [Abstract]
D. VULETIĆ
INVESTIGATIONS OF OPTIMAL METHODS OF STORING POLLEN OF DOMESTIC OAK SPECIES (QUERCUS L. spp.) [Abstract]
R.D. SINGH, A.B. JOSHI, N.L. DHAWAN and B.K. MUKHERJEE
STUDIES IN ELITE INDIAN MAIZE COMPOSITES. I. GENETIC ANALYSIS OF GRAIN YIELD AND OTHER AGRONOMIC TRAITS [Abstract]
B.K. TRIPATHI, N.L. DHAWAN, E.W. SPRAGUE and B.K. MUKHERJEE
GENETICS OF EAR NUMBER AND GRAIN YIELD IN VARIETAL CROSSES OF MAIZE (ZEA MAYS L.) [Abstract]
S. STILINOVIĆ and A. TUCOVIĆ
THE INFLUENCE OF SELF-POLLINATION ON THE PROPERTIES OF FRUITS AND SEEDS OF ALBIZIA JULIBRISSIN DUR. [Abstract]
Published in „GENETIKA“ Vol. 7, No.3 (1975), pp. 205-215
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
INDUCTION OF SPORULATION IN CANDIDA ALBICANS (SYRINGOSPORA ALBICANS) BY MEANS OF N-METHYL-N'-NITRO-N-NITROSOGUANIDINE
Jelisava ADAMIČ and Marija ALAČEVIĆ
Faculty of Biotechnology, University of Ljubljana 61000 Ljubljana
and
Faculty of Technology, University of Zagreb 41000 Zagreb, Yugoslavia
Abstract
AdamiČ, J. and Alačević, M. (1975): Induction of sporula-tion in Candida albicans (Syringospora albicans) by means oi N-methyl-N'-nitro-N-nitrosoguanidine. - Genetika, Vol. 7, No. 3, 205-215.
Until Van der Walt in 1967 described the sexual stage of Candida albicans it was considered to be an asexual yeast belonging to the genus Candida. Van der Walt described 6 different stages as a very rare event in the life cycle of this species. A new name Syringospora albicans was given to the yeast.
Using the mutagen N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) a very low frequency of auxotrophic mutants was observed in C. albicans, but at the same time an extremely high (up to 80%) number of sporulating forms was found among the survivors. To eliminate the possibility of having selected the diploid stage of the strain by mutagen treatment with MNNG the strain was treated with LV and UV-caffeine. It was not possible to obtain sporulation in a higher amount than in the wild type by treatment with UV. Only MNNG had a specific action on the sporulation process in C. albicans.
The experiments were performed by analysing 20 colonies on each plate after different times of treatment as well as at different values of pH. The quantity of DNA at different stages of the life cycle was determined. The different stages of the life cycle were followed in stained preparations and under a phase contrast microscope.
Published in „GENETIKA“ Vol. 7, No.3 (1975), pp. 217-226
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
FAMILIAL TRANSMISSION OF AN EXTRA METACENTRIC CHROMOSOME
Milka ŠOPOVA, D. EFINSKI, B. APOSTOLOVSKI and B. RISTEVSKI
Rehabilitating Center for Mental Retardation, 91000 Skopje, Yugoslavia
Abstract
Šopova, M., Efinski, D., Apostolovski, B. and Ristevski, B. (1975): Familial transmission of an extra metacentric chromosome. - Genetika, Vol. 7, No. 3, 217-226.
The presence of an extra chromosome in the human karyotype is usually associated with marked phenotypic derangements. The present paper, however, deals with an extra metacentric chromosome found in a family with apparently normal phenotype. Chromosomal analysis of different stained preparations suggested that the extra metacentric chromosome with prominent satellites on both arms could be an isochromosome for the short arm of a chromosome of the D group.
Published in „GENETIKA“ Vol. 7, No.3 (1975), pp. 227-232
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
ASSOCIATION OF HUMAN ACROCENTRIC CHROMOSOMES
Petković, I. and Zrinjski, B.
Institut za zaštitu majki i djece, 41000 Zagreb, Jugoslavija
Abstract
Petković, I. and Zrinjski, B. (1975): Association of human acrocentric chromosomes –Genetika. Vol. 7, No. 3, 227-232.
The G-banding technique permits a reliable identification of individual chromosome pairs. This method has been used to identify acrocentric chromosomes involved in satellite associations. The association of human acrocentric chromosomes at C-metaphase was found to be non-random.
Published in „GENETIKA“ Vol. 7, No.3 (1975), pp. 233-239
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
LE CHROMOSOME Y DE GRANDE TAILLE CHEZ LES ENFANTS AVEC LES MALFORMATIONS CONGENITALES
Emilija STOJIMIROVIĆ, Danica KORAĆ, Branislava AJDARIĆ, B. GARZIČIĆ, Radmila KONEČNI, I. VUKOVIĆ and Slobodanka MILETIĆ
Pedijatrijska klinika Medicinskog fakulteta u Beogradu, Institut za biološka istraživanja u Beogradu i Institut za majku i dete Kliničke bolnice grada Beograda, 11000 Beograd, Jugoslavija
Abstract
Stojimirović, E., Korać, D., Ajdarić, B., Garzičić, B., Konečni, R., Vuković, I. et Miletić, S. (1967): Un chromosome Y de grtznde tattle chez les enfants atteints d' anomalies congenitales. - Genetika, Vol. 7, No. 3, 233-239.
Les auteurs ont analise 500 gargons atteints d'anomalies congénitales différentes dont 18 avaient un chromosome Y de grande taille. Dans ce groupe, les auteurs ont note certaines anomalies phénotypiques qui sont en accord avec les observations publiées concernant les cas semblables.
Ayant en vue la nature heterochromatique du bras long de chromosome Y, on peut discuter de la corrélation existant entre ces anomalies morphologiques et la longueur du chromosome Y.
Published in „GENETIKA“ Vol. 7, No.3 (1975), pp. 241-250
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
SECONDARY ASSOCIATION IN BRASSICA OLERACEA L.
M.M. HUSSEIN and M.A. ABOBAKR
Department of Genetics and Horticulture, Faculty of Agriculture in Minia, Univ. of Assuit, A.R.E.
Abstract
Hussein, M. M. and Abobakr, M. A. (1975): Secondary association in Brassica oleracea L. - Genetika, Vol. 7, No. 3, 241-250.
Secondary association was studied in three varieties of Brassica oleracea L. (cauliflower, cabbage and sprouting broccoli). In the three varieties the data indicated that the minimum number of secondary association groups which included all chromosomes was three 1(2) + 1(3) + 1(4). Therefore it could be suggested that the basic number is three. Anaphase I, tetrad and pollen stainability were almost normal in spite of the rare abnormalities appearing in cabbage and sprouting broccoli at anaphase I.
Published in „GENETIKA“ Vol. 7, No.3 (1975), pp. 251-260
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
INVESTIGATIONS OF OPTIMAL METHODS OF STORING POLLEN OF DOMESTIC OAK SPECIES (QUERCUS L. spp.)
D. VULETIĆ
Institut za sumarstvo i drvnu industriju, 11000 Beograd, Jugoslavia
Abstract
Vuletić, D. (1975): Investigations of optimal methods of storing pollen of domestic oak species (Quercus L. spp.) - Genetika, Vol. 7, No. 3, 251-260.
During an investigation of optimal methods for storing pollen of oak species, special attention was paid to the moisture content of the stored pollen as well as the temperature at which the pollen was stored. The temperature was regulated by refrigeration and moisture by the use of CaCl2 and H2SO4 placed at the bottom of the container where the pollen was kept.
The best results were obtained when pollen was kept at -12°C above a 50% solution of H2SO4 In such a way, pollen from three trees of common oak, stored for three years, had the following germination rate: 39,6%, 61,2% and 75,8%.
Other experiments revealed that oak pollen providing a high per cent of germination (over 80%), can be stored for longer than one year in test tubes closed with rubber stoppers and kept at a temperature of -18°C.
The results obtained show the possibility of carrying out intraspecific and interspecific combinations of controlled hybridisation, which had been frustrated by isolated phenophases of flowering of the parent pairs.
Published in „GENETIKA“ Vol. 7, No.3 (1975), pp. 261-268
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
STUDIES IN ELITE INDIAN MAIZE COMPOSITES. I. GENETIC ANALYSIS OF GRAIN YIELD AND OTHER AGRONOMIC TRAITS
R.D. SINGH, A.B. JOSHI, N.L. DHAWAN and B.K. MUKHERJEE
Cummings Laboratory, I.A.R.I., New Delhi, India
Abstract
Singh, R.D., Joshi, A.B., Dhawan, N.L. and Mukherjee, B. K. (1975): Studies in elite Indian maize composites. I. Genetic analysis of grain yield and other agronomic traits. - Genetika. Vol. 7, No. 3, 261-268.
Two Indian commercial composites namely, Kisan and Jawahar were studied at two locations in the main season of 1967 with a view to estimate genetic parameters for grain yield and other agronomic characters. Design I of Comstock and Robinson (1948) was used. For grain yield and its components, ear length and ear diameter, both additive as well as dominance components were of the same magnitude and of equal importance. For days to silk and ear height, the dominance component was found to be of little or no importance, whereas the additive component played a major role in the expression of the character.
Published in „GENETIKA“ Vol. 7, No.3 (1975), pp. 269-277
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
GENETICS OF EAR NUMBER AND GRAIN YIELD IN VARIETAL CROSSES OF MAIZE (ZEA MAYS L.)
B.K. TRIPATHI, N.L. DHAWAN, E.W. SPRAGUE and B.K. MUKHERJEE
Division of Genetics, Indian Agricultural Research Institute, New Delhi - 12, India
Abstract
Tripathi, B. K., Dhawan, N. L., Sprague, E. W. and Mu-kherjee, B. K. (1975): Genetics of ear number and grain yield in varietal crosses of maize (Zea mays L.). - Genetika, Vol. 7, No. 3, 269-277.
The article deals with gene action with respect to ear number and grain yield per plant in a 6 X 6 diallel set of prolific and nonprolific maize varieties. Both additive genetic and nonadditive variances were important for the expression of these two characters. However, additive genetic variance played a more important role in the expression of ear number as compared to grain yield. The mean level of dominance was in the partial dominance range for ear while it was in the complete dominance range for grain yield. Graphic analysis indicated that there was considerable genetic diversity between the prolific parents. Georgia Cow Corn and Sikkim Primitive 2. A breeding methodology based on gene action for both the characters is discussed.
Published in „GENETIKA“ Vol. 7, No.3 (1975), pp. 279-286
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
THE INFLUENCE OF SELF-POLLINATION ON THE PROPERTIES OF FRUITS AND SEEDS OF ALBIZIA JULIBRISSIN DUR.
S. STILINOVIĆ and A. TUCOVIĆ
Šumarski fakultet, 11030 Beograd, Jugoslavija
Abstract
Stilinović, S. and Tucović, A. (1975): The influence of self pollination on the properties of fruits and seeds of Albizia julibrissin Dur. - Genetika, Vol. 7, No. 3, 279-286.
Pods and seeds were collected from one isolated tree and from a population grown in a group. The pods of the isolated tree were smaller and more variable than those of the trees grown in the group. There were also fewer seeds per pod. Some important features of seeds formed by self-fertilization were: small dimensions, marked variability in size and shape, a relatively high percent of emptiness, and a lower germination rate, in comparison with seeds formed by cross-pollination. Some abnormalities were also observed in the course of germination of self-pollinated seeds. For these reasons, the authors concluded that seed of the isolated individuals should not be used for growing seedlings in nurseries. However, such seed might be good starting material for use in the process of breeding and selection of this species.