N. TUCIĆ
ANALYSIS OF LETHAL CHROMOSOMES AFTER SELECTION FOR RESISTANCE TO COLD TEMPERATURES IN DROSOPHILA MELANOGASTER. II. THE VIABILITY OF LETHAL-CARRYING HETEROZYGOTES FOR THE SECOND CHORMOSOMES [Abstract]
N. TUCIĆ and M. KRUNIĆ
GENOTYPE DEPENDENT ABILITY OF DROSOPHILA MELANOGASTER TO COLD HARDINESS AT DIFFERENT DEVELOPMENTAL STAGES [Abstract]
M. ANĐELKOVIĆ and Mirjana TOŠIĆ
GENETIC LOADS IN A POPULATION OF DROSOPHILA MELANOGASTER FROM SARA MOUNTAIN [Abstract]
T. KILALIĆ, E. SELIMIĆ - BURIČIĆ and S. RAMIĆ
PHARMACOGENETICAL EFFECTS OF PENICILLIN V AND STREPTOMYCIN ON THE OCCURRENCE OF CONATAL MALFORMATIONS IN NEWBORN ALBINO RATS [Abstract]
N. JANJIĆ
EINE HERZEGOWINISCHE FORM DER BEHAARTEN FELDULME MIT GESCHLITZTEN BLAETTERN [Abstract]
Lj. ZEČEVIĆ, Jelena PAVLIČIĆ, Branka TUCIĆ and M. CVETKOVIĆ
PACHYTENE ANALYSES OF CLASSIFIED YUGOSLAV MAIZE GROUPS. I. NUMBER AND POSITION OF KNOBS IN MONTENEGRIN AND MEDITERRANEAN FLINTS [Abstract]
T.R. SHARMA, S.K. BANERJEE and A. K. KAUL
STUDY OF THE INHERITANCE OF GRAIN WEIGHT AND PROTEIN CONTENT IN WHEAT (TRITICUM AESTIVUM L.) BASED ON SINGLE GRAIN ANALYSIS [Abstract]
T.R. SHARMA, S.K. BANERJEE, Daljit STNGH and A.K. KAUL
HERITABILITY OF GRAIN WEIGHT AND SOME QUALITY CHARACTERS IN WHEAT (TRITICUM AESTIVUM L.) [Abstract]
J.R. POWELL
CHROMOSOMAL VERSUS PROTEIN POLYMORPHISMS IN NATURAL POPULATIONS OF DROSOPHILA [Abstract]
Published in „GENETIKA“ Vol. 7, No.2 (1975), pp. 111-122
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
ANALYSIS OF LETHAL CHROMOSOMES AFTER SELECTION FOR RESISTANCE TO COLD TEMPERATURES IN DROSOPHILA MELANOGASTER. II. THE VIABILITY OF LETHAL-CARRYING HETEROZYGOTES FOR THE SECOND CHORMOSOMES
N. TUCIĆ
Prirodno-matematički fakultet i Institut za biološka istraživanja, 11000 Beograd, Jugoslavija
Abstract
Tucić, N. (1975): Analysis of lethal chromosomes after selection for resistance to cold temperatures in Drosophila melanogaster. II. The viability of lethal-carrying heterozygotes for the second chromosomes. - Genetika, Vol. 7, No. 2, 111-122.
The genetic loads were measured in strains of D. melanogaster selected to be resistant to cold temperatures at one of the developmental stages. It was found that their second chromosomes contained a relatively high percentage of homozygous-ly lethal mutations. Also, a high percentage of these mutations showed a positive allelism test. The viability studies of lethal-carrying heterozygotes suggest that homozygously lethal mutations may contribute significantly to the greater adaptive value of the strains selected to be cold resistant.
Published in „GENETIKA“ Vol. 7, No.2 (1975), pp. 123-132
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
GENOTYPE DEPENDENT ABILITY OF DROSOPHILA MELANOGASTER TO COLD HARDINESS AT DIFFERENT DEVELOPMENTAL STAGES
N. TUCIĆ and M. KRUNIĆ
Prirodno-matematički fakultet i Institut za biološka istraživanja, 11000 Beograd, Jugoslavija
Abstract
Tucić, N. i Krunić, M. (1975): Genotype dependent ability of Drosophila melanogaster to cold hardiness at different developmental stages. - Genetika, Vol. 7, No. 2, 123-132.
Freezing points of individuals of Drosophila melanogaster originating from a natural population were determined at five different developmental stages (eggs, larvae I and II, pupae and adults). The obtained results were compared with the freezing points of individual flies selected for 48 generations to be resistant to moderately low temperatures (from 0°C to -4°C). Statistically significant differences between the two mentioned groups of individuals were not found. In addition, the freezing points were measured in the determined combinations of II and III pairs of chromosomes (homo- and heterozygotes) using only adult flies. Changes due to particular combinations of chromosomes have been found, showing that appropriate combinations of second and third chromosomes may increase, or decrease the freezing points of their adult carriers.
Published in „GENETIKA“ Vol. 7, No.2 (1975), pp. 133-140
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
GENETIC LOADS IN A POPULATION OF DROSOPHILA MELANOGASTER FROM SARA MOUNTAIN
M. ANĐELKOVIĆ and Mirjana TOŠIĆ
Institut za biološka istraživanja »Siniša Stanković«, 11000 Beograd, Jugoslavija
Abstract
Anđelković, M. and Tosić, M. (1975): Genetic loads in a natural population of Drosophila melanogaster from Sara mountain.- Genetika , Vol. 7, No. 2, 133-140.
Natural populations of cross-fertilized plants and animals contain a relatively large amount of genetic loads, as a result of numerous mutations. These are mostly deleterious in the homozygous condition. The complex mechanisms of maintenance of these mutations in natural populations are not yet understood enough, and analyses of different kinds of genetic loads are still of particular interest, especially in natural conditions.
Published in „GENETIKA“ Vol. 7, No.2 (1975), pp. 141-147
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
PHARMACOGENETICAL EFFECTS OF PENICILLIN V AND STREPTOMYCIN ON THE OCCURRENCE OF CONATAL MALFORMATIONS IN NEWBORN ALBINO RATS
T. KILALIĆ, E. SELIMIĆ - BURIČIĆ and S. RAMIĆ
Institut za medicinsku biologiju i humanu genetiku Medicinskog fakulteta, Univerzitet u Sarajevu, 71000 Sarajevo, Jugoslavija
Abstract
Kilalić, T., Selimić - Đuričić, E. and Ramie, S. (1975): Pharmacogenetical effects of penicillin V and streptomycin on, the occurrence of conatal malformations in newborn Albino rats. - Genetika Vol. 7, No. 2, 141-147.
The aim of our work was to investigate the teratogenic effects of the antibiotics Penicillin V and Streptomycin on the embryological development of Albino rats. The results indicated that large doses of antibiotics produced different conatal malformations when administered between 5 and 15 days of embryo-logical development in Albino rats. These antibiotics especially Penicillin V, changed the genetical control of the development of some characteristics at a crucial phase of organogenesis.
Published in „GENETIKA“ Vol. 7, No.2 (1975), pp. 149-157
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
EINE HERZEGOWINISCHE FORM DER BEHAARTEN FELDULME MIT GESCHLITZTEN BLAETTERN
N. JANJIĆ
Šumarski fakultet, 71000 Sarajevo, Jugoslavija
Abstract
Janjić, N. (1975): Eine hercegowinische Form der behaarten Feldulme mit geschlitzten Bldttern. - Genetika, Vol. 7, No. 2, 149-157.
Längs des Flusses Trebizat in der Süd-Hercegowina sind auf zwei getrennten Lokalitäte einige Exemplare der Art Ulmus. canescens Melville gefunden. Von der Spitze hinab sind ihre Blatter so eingeschlitzt, dass der Hauptnerv grösstenteils frei ist, während von ihren beiden Seiten je ein Lappen besteht. Diese Erscheinung manifestierte sich an jedem Baum regelmässig in der ganzen Krone. Eine Ausnahme machten nur die Langtriebe in denen gewöhnlich untere Blätter eingeschnitten und die obe-ren ganz sind. Auf Grand einiger zum Vorschein kommenden Umstande dieser Erscheinung, kommt man zur Schlussfolgerung, dass hier eine generative Mutation in Frage kommt, welche sich im frühesten Entwicklungsstadium der Pflanze abgespielt hat, und dass diese Erscheinung hereditär ist. Deshalb sind die vor-gefundene Exemplare als eine neue Form, nämlich U. canescens Meville f. urophylla Janjić, beschrieben worden.
Forma a typo differt foliis ramulorum brevium et inferioris partis turionum divisis, bipartitis, et nervis mediis liberis caudatis, basibus latis et oblique cordatis. Lobi ca aequali longi-tudine, supra ± glabri, subtus pubescentes et glandulosi.
Published in „GENETIKA“ Vol. 7, No.2 (1975), pp. 159-166
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
PACHYTENE ANALYSES OF CLASSIFIED YUGOSLAV MAIZE GROUPS. I. NUMBER AND POSITION OF KNOBS IN MONTENEGRIN AND MEDITERRANEAN FLINTS
Lj. ZEČEVIĆ, Jelena PAVLIČIĆ, Branka TUCIĆ and M. CVETKOVIĆ
Institut za biološka istraživanja, 11000 Beograd
i Institut za kukuruz, 11080 Zemun
Abstract
Zečević, Lj., Pavličić, J., Tucić, B. and Cvetković, M. (1975): Pachytene analyses of classified yugoslav maize groups. I. Number and position of knobs in Montenegrin and Mediterranean flints. - Genetika, Vol. 7, No. 2, 159-166.
An investigation of the number and position of knobs was made in two groups of flint maize, namely Montenegrin and Mediterranean flints. Ten different positions of knobs were present in Montenegrin flints, with an average knob number of 2.40. In Mediterranean flints there were 9 positions with an average knob number of 2.66. Position 9 ST was the most frequent in both flint groups (90% in Montenegrin flints and 89% in Mediterranean flints).
Published in „GENETIKA“ Vol. 7, No.2 (1975), pp. 167-179
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
STUDY OF THE INHERITANCE OF GRAIN WEIGHT AND PROTEIN CONTENT IN WHEAT (TRITICUM AESTIVUM L.) BASED ON SINGLE GRAIN ANALYSIS
T.R. SHARMA, S.K. BANERJEE and A. K. KAUL
Indian Agricultural Research Institute, New Delhi, India
Abstract
Sharma, T.R., Banerjee, S.K. and Kaul, A.K. (1975): Study of the inheritance of grain weight and protein content in wheat (Triticum aeslivuni L.) based on single grain analysis. - Genetika, Vol. 7, No. 2, 167-179.
Inheritance of grain weight and protein content of single grains was studied in four crosses involving five different varieties of wheat. Considerable variation was observed in the individual grain weight and the protein content per grain. Significant positiye correlation values were found between these two characters in all the populations. Significant heterosis values for grain weight and protein content were obtained, with few exceptions, whether expressed on the mid-parental value or better parent basis. K 65 X Sharbati Sonora showed the highest values and NP 890 X S 308 the lowest values for heterosis and inbreeding depression.
Published in „GENETIKA“ Vol. 7, No.2 (1975), pp. 181-189
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
HERITABILITY OF GRAIN WEIGHT AND SOME QUALITY CHARACTERS IN WHEAT (TRITICUM AESTIVUM L.)
T.R. SHARMA, S.K. BANERJEE, Daljit STNGH and A.K. KAUL
Indian Agricultural Research Institute, New Delhi, India
Abstract
Sharma, T.R., Banerjee, S.K., Singh. D. and Kaul, A. K. (1975): Heritability of grain weight and some quality characters in wheat (Triticum aestivinn L.) - Genetika, Vol. 7, No. 2, 181-189.
Heritability estimates (h2) were computed for grain weight and some quality characters by two methods using the P1, P2, F2 and F3 populations of two crosses with their reciprocals involving three wheat varieties. A considerable amount of genetic variability was observed for thousand kernel weight, dye-binding capacity (DEC) and protein content. The data suggest the feasibility of early generation testing for quality characters. It might also be possible to select for any desired combination of the three traits, but some compromise would have to be made in the degree of expression for certain trails in the families, selected.
Published in „GENETIKA“ Vol. 7, No.2 (1975), pp. 191-204
© 1975 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
CHROMOSOMAL VERSUS PROTEIN POLYMORPHISMS IN NATURAL POPULATIONS OF DROSOPHILA
J.R. POWELL
Department of Biology, Yale University New Haven, Connecticut 06520 U.S.A.
Abstract
Powell, J.R. (1975): Chromosomal versus protein polymorphisms in natural populations of Drosophila. - Genetika, Vol. 7, No. 2, 191-204.
A comparison of geographic patterns of chromosome inversion polymorphisms and electrophoretically detectable protein polymorphisms of several Drosophila species is presented. In all species for which both types of polymorphism have been studied the following pattern is evident: inversion polymorphisms show much greater geographic differentiation than do protein polymorphisms. Four explanations are offered to explain the observed difference, the last of which emphasizes the importance of history in understanding population genetic patterns. The history of the populations must be considered as well as the history of the origin of the polymorphism. Inversion polymorphisms are monophyletic in origin; protein polymorphisms are probably polyphyletic.