GENETIKA, Vol. 11, No.1 (1979)
M. ATHAR UDDIN
COMBINING ABILITY ANALYSIS OF THREE YIELD COMPONENTS IN SIX PARENT DIALLEL CROSSES OF SPRING WHEAT VARIETIES (TRITICUM AESTIVUM L.) [Abstract]
I. KREFT, K. PUNDRIĆ and PREDALIĆ
A STUDY ON POLLEN GRAIN DIMORPHISM IN BUCKWHEAT [Abstract]
W. GOTTSCHALK
DIFFERENTIAL BEHAVIOUR OF A MUTANT GENE IN PISUM RECOMBINANTS [Abstract]
Lj. BERBEROVIĆ, R. HADŽISELIMOVIĆ and A. SOFRADŽIJA
POPULATION GENETICS OF THE PTC TASTING IN BOSNIA AND HERZEGOVINA (YUGOSLAVIA) [Abstract]
Dušanka RADIVOJEVIĆ, Nada SAVKOVIĆ, Jugoslava PEČEVSKI and A. GELINEO
THE EFFECT OF ERYTHROMYCIN ON FERTILITY OF FEMALE MICE AND SURVIVAL OF THEIR FETUSES [Abstract]
D.J. SAVIĆ
AN EXAMPLE OF REVERSE CONJUGATIONAL TRANSFER IN ESCHERICHIA COLI K-12 [Abstract]
M.L.H. KAUL and R.GARG
PHENOTYPIC VARIATION, INTERCORRELATIONS AND GENETIC PARAMETERS IN RICE [Abstract]
M. DENIĆ, Vesna HADŽI-TAŠKOVIĆ ŠUKALOVIĆ, Danica JELENIĆ, J. DUMANOVIĆ and Irina BOŽOVIĆ
COMPARISON OF SOME CHEMICAL METHODS FOR SCREENING MAIZE GENOTYPES WITH IMPROVED PROTEIN QUALITY [Abstract]
Published in „GENETIKA“ Vol. 11, No.1 (1979), pp. 1-7
© 1979 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
COMBINING ABILITY ANALYSIS OF THREE YIELD COMPONENTS IN SIX PARENT DIALLEL CROSSES OF SPRING WHEAT VARIETIES (TRITICUM AESTIVUM L.)a
M. ATHAR UDDIN
Planning and Follow-up Divison, Council of Land Reclamation and Development, Tripoli, Libya
Abstract
Uddin Athar, M. (1979): Combining ability analysis of three yield components in six. parent diallel crosses of spring wheat varieties (Triticum aestivum L.)..- Genetika, Vol. 11, No. 1, 1-7.
A diallel analysis of six spring wheats (Triticum aestivum L.) representing Yugoslav, Indian and Mexican varieties, were studied to determine the combining ability effects of length of spike, number of spikelets per spike and number of kernels per spikelet.
Both general and specific combining ability effects were significant in the case of spikelets per spike and number of kernels per spikelet in both the F1 and F2 generations, but only GCA was significant in the case of length of spike in both the generations. Kalyansona, NS-14-38 and Yecora-70 gave a highly significant GCA value for length of spike while Kalyansona, NS-718 and NS-14-38 gave a high GCA value for number of spikelets per spike and number of kernels per spikelet. Superior hybrids were obtained from the crosses where at least one parent is a good general combiner, and with the crosses of genetically diversed parents.
a) Contribution of the Department of Genetics and Plant Breeding, Faculty of Agriculture, University of Novi Sad Yugoslavia. A Part of a thesis submitted by the author in partial fulfilment of the requirements for a Ph D. degree.
Published in „GENETIKA“ Vol. 11, No.1 (1979), pp. 9-14
© 1979 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
A STUDY ON POLLEN GRAIN DIMORPHISM IN BUCKWHEAT
I. KREFT, K. PUNDRIĆ and PREDALIĆ
Agronomski oddelek, Biotehniska fakulteta, Univerza v Ljubljani, 61000 Ljubljana, Jugoslavija
Abstract
Kreft, I., Pundrić, K. and Predalić, B. (1979): A study on pollen grain dimorphism in buckwheat. - Genetika, Vol. 11, No. 1, 9-14.
Pollen grains and stigma of the two types of plant of the buckwheat variety Siva dolenjska were observed by scanning electron microscope (SEM). Pollen grains from thrum flowers are larger (60-66 μm long) than pollen grains from pin flowers (47-52 μm long). It was also revealed that pin pollen grains have oval reticulate ridges of exine sculpturing and that thrum pollen grains have slightly sharpened ridges.
In autotetraploid plants, obtained by colchicine treatment, the exine sculpturing of pollen grains was typical for the type of flower, but with some small deformations in the sculpturing. In autotetraploid plants about 80% of pollen grains were smaller than normal, some of them also unfilled and deformed.
Stigmatic folds in the studied buckwheat material are irregular and it was not possible to reveal significant differences between Stigmatic surfaces of the two forms of flower. The self-incompatibility system of buckwheat may be somewhat different from 'that of Primula malacoides.
Published in „GENETIKA“ Vol. 11, No.1 (1979), pp. 15-28
© 1979 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
DIFFERENTIAL BEHAVIOUR OF A MUTANT GENE IN PISUM RECOMBINANTS
W. GOTTSCHALK
Institute of Genetics, University of Bonn 5300 Bonn, FR Germany
Abstract
Gottschalk, W. (1979): Differential behaviour of a mutant gene in Pisum recombinants. - Genetika, Vol. 11, No. 1, 15-28.
The plants of the Pisum mutant 142B, homozygous for gene dgl, are dwarfs with strongly degenerated leaflets and stipules. Their seed production is very low because of the reduced photo-synthetic capacity. After having crossed 142B with the high-yielding fasciated mutant 489C, three different recombinant lines were developed in which gene dgl is combined with various other mutant genes of the genome derived from 489C.
Due to an altered stem structure, the seed production of recombinants R 142C and R 142D is esentially better than that of mutant 142B. With regard to leaf degeneration, gene dgl expresses its action in these recombinants in the same way as in mutant 142B. The tall, non-fasciated plants of recombinant R 142F surpass mutant 142B in seed yield by more than 600%. This high capacity is mainly due to the reduced expressivity of gene dgl in this specific gene combination. Only the lowest leaves show the degeneration whereas all the other ones have full photosynthetic efficiency. One of the mutant genes of R 142F, the gene for tallness or that for lateness, influences the expressivity of gene dgl negatively thus enabling the plants to undergo a nearly normal onto-genetic development with high seed production. The selection value of gene dgl has been tremendously increased in this combination.
The expressivity of gene dgl depends not only on other specific genes of the genome but also on environmental factors. When grown in Egypt and India, mutant 142B and recombinant R 142C do not show any leaf degenerations. This behaviour is also observed in Germany when the genotypes are grown in a warm greenhouse. Under these ecological conditions, gene dgl is unable to manifest its action.
Published in „GENETIKA“ Vol. 11, No.1 (1979), pp. 29-39
© 1979 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
POPULATION GENETICS OF THE PTC TASTING IN BOSNIA AND HERZEGOVINA (YUGOSLAVIA)
Lj. BERBEROVIĆ, R. HADŽISELIMOVIĆ and A. SOFRADŽIJA
Odjeljenje za genetiku i citotaksonomiju Biološkog instituta Univerziteta u Sarajevu, 71000 Sarajevo, Jugoslavija
Abstract
Berberovic, Lj., Hadžiselimović, R. and Sofradžija, A. (1979): Population genetics of the PTC tasting in Bosnia and Herzegovina (Yugoslavia). - Genetika, Vol. 11, No. 1, 29-39.
Spatial distribution of the basic parameters of population genetic structure regarding the ability to taste phenylthiocarba-mide (PTC) has been studied in 13 samples (totalling 7362 individuals) from Bosnia and Herzegovina. The frequency of the non-tasters in the total sample was found to be 30.22% (q, = 0.55); the differences between sexes in this respect were statistically insignificant (males - 30.47%, females - 29.90%). The frequency of the recessive phenotype in the local population samples varied from 16.85% (q, = 0.41) to 45.75% (q, = 0.68).
Published in „GENETIKA“ Vol. 11, No.1 (1979), pp. 41-44
© 1979 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
THE EFFECT OF ERYTHROMYCIN ON FERTILITY OF FEMALE MICE AND SURVIVAL OF THEIR FETUSES
Dušanka RADIVOJEVIĆ, Nada SAVKOVIĆ, Jugoslava PEČEVSKI and A. GELINEO1
Department of Radiobiology, Institute for Nuclear Science »Boris Kidric«, Vinca, P.O. Box 522, 11001 Beograd
and Pharmaceutical Industry »Galenika«1 11000 Beograd, Yugoslavia
Abstract
Radivojević, D., Savković, N., Pečevski, J. and Gelineo, A. (1979): The effect of erythromycin on fertility of female mice and survival of their fetuses. - Genetika, Vol. 11, No. 1, 41-44.
The aim of our investigation was to examine whether erythromycin has an effect of fertility of famile mice and their fetuses. The C3H female mice used in the experiment were treated with erythromycin each day for five successive days in doses of 30 and 90 mg/kg of body weight either before or after mating.
The obtained results show that erythromycin reduces the fertility in both groups and in both doses. Lethality to the fetuses was found only after treatment with doses of 90 mg/kg in both groups.
Published in „GENETIKA“ Vol. 11, No.1 (1979), pp. 45-56
© 1979 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
AN EXAMPLE OF REVERSE CONJUGATIONAL TRANSFER IN ESCHERICHIA COLI K-12
D.J. SAVIĆ
Laboratory for Molecular Biology and Endocrinology, Institute for Nuclear Sciences »Boris Kidrič«, Vinča, P.O. Box 522, 11001 Beograd, Yugoslavia
Abstract
Savić, D. (1979): An example of reverse conjugational transfer in Escherichia coli K-12. - Genetika, Vol. 11, No. 1, 45-56.
A mutant of Escherichia coli K-12 which demonstrates reverse conjugational transfer with F'lac (F42) has been partially characterized. Mobilization by F'lac always results in the counter-clockwise transfer of donor markers in the order O, proAB, leu, .... . Quite contrary to this, the same F-prime in the mutant strain promotes reverse conjugational transfer in the clockwise direction. Since the strain under study had been lysogenized in its recent history with the mutant of temperate phage P2, P2c5nipl, a number of experiments were undertaken to see whether the observed phenomenon reflected the existence of chromosomal mutation (inversion), or was due to some phage-directed processes. The presented data clearly indicate that P2 phage or some phage remnant is not the resident of the mutant chromosome anymore.
Published in „GENETIKA“ Vol. 11, No.1 (1979), pp. 57-73
© 1979 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
PHENOTYPIC VARIATION, INTERCORRELATIONS AND GENETIC PARAMETERS IN RICE
M.L.H. KAUL and R.GARG
Institute of Genetics, University of Bonn, Bonn, FR Germany
and Botany Department, Kurukshetra University, India
Abstract
Kaul, M. L. H. and Garg, R. (1979): Phenotypic variation, intercorrelations and genetic parameters in rice. - Genetika, Vol. 11, No. 1, 57-73.
Considerable genotypic and phenotypic diversity was found in morphological traits of rices grown in and around the north--eastern Himalayan region of India. Significant differences existed among the varietal means for the traits: shoot, panicle and internode length; total and effective tiller number; total and fertile grain number and grain yield. The range of variability was highest for grain number and yield and lowest for shoot height. Seed protein content had much variability, but the genotypes having high seedprotein content were low yielding. Grain yield and grain number exhibited high heritability, genotypic coefficient of variation and expected genetic advance. Therefore, these traits have a high selection value, and, the variation in them is attributable to a high degree of additive genetic effect.
The positive and highly significant phenotypic and genotypic correlations of grain yield with tiller number, and, with grains per panicle and the insignificant genotypic correlation between shoot height and grain yield indicate that the selection of heavy tillering plants with an increased number of grains per panicle would produce rice plants higher in yield without influencing their stature significantly. Regression equations indicate a very strong dependence of yield upon the grain and effective tiller number and substantiate further the validity of the above mentioned yield relationships. By successively partialling out the influence of traits: tiller number, shoot, panicle and internode length, and, grains per panicle, highly significant and positive correlations were obtained between grain yield and fertile grain number. Similar correlations were obtained between grain yield and effective tiller number when the influence of other traits, except of total grain number, was partialled out. Multiple correlations indicated that 64-97 per cent of variance .in grain yield is accounted for by its association with other phenotypic traits, the remainder is due to interaction of other variables including the environment.
Published in „GENETIKA“ Vol. 11, No.1 (1979), pp. 75-83
© 1979 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
COMPARISON OF SOME CHEMICAL METHODS FOR SCREENING MAIZE GENOTYPES WITH IMPROVED PROTEIN QUALITY
M. DENIĆ, Vesna HADŽI-TAŠKOVIĆ ŠUKALOVIĆ, Danica JELENIĆ, J. DUMANOVIĆ and Irina BOŽOVIĆ
Maize Research Institute - Zemun Polje, 11080 Zemun, Yugoslavia
Abstract
Denić, M., Hadži-Tašković Šukalović, Vesna, Jelenić, Danica, Dumanović, J. and Božović, Irina (1979): Comparison of some chemical methods for screening maize genotypes with improved protein quality. - Genetika, Vol. 11, No. 1, 75-83.
Analyses of maize populations of the opaque-2 and normal genotypes showed different coefficients of correlation between lysine and tryptophan content. Thus, correlations between these two amino acids were 0.36 in opaque-2 endosperm, 0.68 in mixed opaque-2 and normal kernels, and 0.90 in normal kernels. Due to this fact, it is difficult to use tryptophan determination as an indirect screening method for lysine content within opaque-2 segregants. Therefore, in this case a critical evaluation of breeding material should be based on a direct analytical method.
Using colorimetric and standard ion-exchange chromatography methods for lysine, different coefficients of correlation were obtained. The highest r value was found for normal (0.91), somewhat lower for mixed (0.78) and the lowest for opaque-2 type of material (0.60). For this reason a new isotope dilution-amino-acylation (IDAA) method was developed for amino acid determination. This method was also compared with a standard ion-exchange chromatography method. In this case the same (0.94) r values were found for both mixed and opaque-2 samples.