Mechtild ROMMEL
NATURAL TRIPLOIDS OF POPULUS SPECIES IN PLANT BREEDING [Abstract]
P. DOKIĆ, S. STANAĆEV and D. STEFANOVIĆ
EFFECT OF GENOTYPE AND POLYPLOIDY LEVEL ON THE CONTENT OF CHLOROPHYLL A AND B IN SUGAR BEET LEAVES OF VARIOUS AGE [Abstract]
S. PETROVIĆ
THE TRANSMISSION OF THE MONOSOMIC CONDITION IN DIFFERENT WHEAT GENOTYPES [Abstract]
S. MUSZYNSKI, Marta DARLEWSKA and Alicja DABROWSKA
MUTATION INDUCTION IN RYE (SECALE CEREALE L.) WITH PHYSICAL AND CHEMICAL MUTAGENS [Abstract]
Marija KRALJEVIĆ-BALALIĆ and Katarina BOROJEVIĆ
COMBINING ABILITY AND GENE ACTION FOR PLANT HEIGHT IN MUTANT LINES OF TRITICUM AESTIVUM VULGARE [Abstract]
Ljiljana VAPA and Katarina BOROJEVIĆ
THE PROBABILITY OF IMPROVEMENT IN THE ADAPTATION OF MACROMUTANTS [Abstract]
J. SIMON and Z. SAJO
A NEW RADIOMUTANT RICE VARIETY IN HUNGARIAN RICE PRODUCTION [Abstract]
J.E. PARLEVLIET
DISEASE RESISTANCE IN PLANTS. A CONCEPT INTEGRATING HORIZONTAL AND VERTICAL RESISTANCE [Abstract]
Katarina BOROJEVIĆ
TOLERANCE TO PUCCINIA RECONDITA TRITICI IN THE POPULATION OF TRITICUM AESTIVUM VULGARE AFTER MUTAGENIC TREATMENTS [Abstract]
Zora JELIČIĆ, Katarina BOROJEVIĆ and V. MOMČILOVIĆ
EVALUATION OF MUTAGENIC TREATMENT FOR INDUCTION OF MUTATIONS RESISTANT TO PUCCINIA RECONDITA TRITICI [Abstract]
F. SACCARDO, K. SREE RAMULU and L. TOMARCHIO
ISOLATION, TRANSFER AND INDUCTION OF DISEASE RESISTANCE IN CAPSICUM [Abstract]
Published in „GENETIKA“ Vol. 8, No.3 (1976), pp. 183-186
© 1976 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
NATURAL TRIPLOIDS OF POPULUS SPECIES IN PLANT BREEDING
Mechtild ROMMEL
International Agriculture, Gesamthochschule Kassel, 3430 Witzenhausen, Germany
Abstract
Rommel, M. (1976): Natural triploids of Populus species in plant breeding. - Genetika, Vol. 8, No. 3, 183-186.
Natural triploids in several Populus species have been reported since 1936, indicating the presence of unreduced gametes in male and/or female trees. The first report by Nilsson-Ehle in Sweden stimulated a world-wide search for triploid trees in natural habitats. At the same time colchicine techniques were developed to induce tetraploid trees for intercrossing with diploids. Because of the many years a tree needs to grow to maturity, it is most desirable to recover triploids immediately from a diploid parent. Using large seedling populations from Populus tremula and Populus tremoloides (Aspen) a screening technique was developed to single out natural triploid seedlings from diploid ones.
Published in „GENETIKA“ Vol. 8, No.3 (1976), pp. 187-194
© 1976 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
EFFECT OF GENOTYPE AND POLYPLOIDY LEVEL ON THE CONTENT OF CHLOROPHYLL A AND B IN SUGAR BEET LEAVES OF VARIOUS AGE
P. DOKIĆ, S. STANAĆEV and D. STEFANOVIĆ
Faculty of Agriculture, University of Novi Sad, 21000 Novi Sad, Yugoslavia
Abstract
Dokić, P., Stanaćev, S. and Stefanović, D. (1976): Effect of genotype and polyploidy level on the content of chlorophyll a and b in sugar beet leaves of various age. - Genetika, Vol. 8, No. 3, 187-194.
This work examines the contens of chlorophyll a and b in three different diploid and tetraploid genotypes of monogerm sugar beet. The contents of chlorophyll a and b were determined separately in inner, medium, and outer leaves in June, July, and August, according to the method of Godnev (1965).
Significant differences were found regarding the content of total chlorophyll in green sugar beet leaves, depending upon position and age of leaves as well as genotype and level of polyploidy. In the first half of vegetation, the contents of chlorophyll a and b increased more intensively in diploids, in the second half - in tetraploids.
For this reason the tetraploid genotype GW761 had a significantly higher content of total chlorophyll on August 20 than its diploid analogue.
Published in „GENETIKA“ Vol. 8, No.3 (1976), pp. 195-201
© 1976 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
THE TRANSMISSION OF THE MONOSOMIC CONDITION IN DIFFERENT WHEAT GENOTYPES
S. PETROVIĆ
Department of Genetics and Plant Breeding, Faculty of Agriculture, University of Novi Sad, 21000 Novi Sad, Yugoslavia
Abstract
Petrović, S. (1976): The transmission of the monosomic condition in different wheat genotypes. - Genetika, Vol. 8, No. 3, 195-201.
The frequency of monosomics was studied for each of the 21 chromosomes in progenies of Chinese Spring selfed monosomics, F1 hybrids between Chinese Spring monosomics as the female parent and several hexaploid wheat varieties as the male parent, and monosomics backcrossed with the variety Sava.
Significant differences in the transmission rate of the monosomic condition were found between chromosomes and type of pollination.
Average frequency of monosomics was 65 per cent. The monosomic condition was most frequently transmitted in the progeny of monosomic 6D (73 per cent) and least in monosomic 2A (58 per cent).
Published in „GENETIKA“ Vol. 8, No.3 (1976), pp. 203-205
© 1976 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
MUTATION INDUCTION IN RYE (SECALE CEREALE L.) WITH PHYSICAL AND CHEMICAL MUTAGENS
S. MUSZYNSKI, Marta DARLEWSKA and Alicja DABROWSKA
Institute of Genetics and Plant Breeding, Agricultural University, Warsaw, Poland
Abstract
Muszynski, S., Darlewska, M. and Dabrowska, A. (1976): Mutation induction in rye (Secale cereale L.) with physical and chemical mulagens. - Genetiika, Vol. 8, No. 3, 203-205.
Short-straw mutants were induced in two population cultivars of winter rye, using fast neutron or N-nitrozo-N-ethyl-urea treatment of seeds.
Published in „GENETIKA“ Vol. 8, No.3 (1976), pp. 207-214
© 1976 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
COMBINING ABILITY AND GENE ACTION FOR PLANT HEIGHT IN MUTANT LINES OF TRITICUM AESTIVUM VULGARE
Marija KRALJEVIĆ-BALALIĆ and Katarina BOROJEVIĆ
Department of Genetics and Plant Breeding, Faculty of Agriculture, and
Institute of Biology, Faculty of Natural Sciences, University of Novi Sad, 21000 Novi Sad, Yugoslavia
Abstract
Kraljević-Balalić, M. and Borojević, K. (1976): Combining ability and gene action for plant height in mutant lines of Triticum aestivum vulgare. - Genetika, Vol. 8, No. 3, 207-214.
In five parent diallel crosses, using mutant vulgare wheat lines, combining ability and gene action lor plant height were estimated in F1.
In all mutant .lines, the mean values for plant height were lower than in the control. In the F1 generation, the mean values for plant height were significantly lower than the values of both the parents. The effects of general and specific combining ability were significant for additive and non-additive components of genetic variance.
The components of variance analysis, like the graphical analysis (Vr/Wr and Wr/W’), indicated overdominance for plant height in mutant lines.
The degree of
dominance from 
was greater than unity showing
overdominance for this trait. The predominance of dominant alleles (u) compared
with recessive ones (v) was present in the case when the lines were not
selected for plant height. When the selection was made according to plant
height, there were more recessive genes (v) than dominant genes (u).
Published in „GENETIKA“ Vol. 8, No.3 (1976), pp. 215-222
© 1976 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
THE PROBABILITY OF IMPROVEMENT IN THE ADAPTATION OF MACROMUTANTS
Ljiljana VAPA and Katarina BOROJEVIĆ
Faculty of Technology and Faculty of Natural Sciences, 21000 Novi Sad, Yugoslavia
Abstract
Vapa, Lj. and Borojević, K. (1976): The probability of improvement in the adaptation of macromutants. - Genetika, Vol. 8, No. 3, 215-222.
Investigations were carried out with San Pastore variety (Triticum aestivum vulgare) treated with EMS. The material was grown by the method of random sampling up (to the M4 generation without selection. In the M< generation, however, mutants were selected according to the type of spike enabling the formation of a new population of macromutants. This population represented 9% of all plants in the M4 generation. In the M5 and M6 generations the progenies of these macromutations were examined for qualitative and quantitative characters. All plants were scored according to the type of change using Fisher's hypothesis on .spontaneous and Gregory's on .induced mutations as the bases for the test. According to the latter hypothesis, the frequency of observed mutations increases with decrease in the magnitude of change according to the relation y = be-ax; the probability of improvement increases with decrease in the magnitude of change up to a limit of 0.5.
Published in „GENETIKA“ Vol. 8, No.3 (1976), pp. 223-226
© 1976 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
A NEW RADIOMUTANT RICE VARIETY IN HUNGARIAN RICE PRODUCTION
J. SIMON and Z. SAJO
Phylaxia Veterinary Biologicals and Feedstuffs Co., Budapest
and Institute of Agrobolany, Tapioszele, Hungary
Abstract
Simon, J. and Sajo, Z. (1976): A new radiomutanl rice variety in Hungarian rice production. - Genetika, Vol. 8, No. 3, 223-226.
A new Hungarian neutron mutant rice variety released by the state on May 20, 1976, and previously patented by the state on November 4, 1974 was the earliest in a three-year state field trial and, at the same time, has given the highest yield in the early-maturing group. The mutant originated from Cesariot (a very late-maturing French variety) by fast neutron irradiation, the seeds having been treated in Seibersdorf (Austria) in an Astra v reactor with 1000 rads dose in 1966. Selection for early-flowering plants was started in the M2 generation. The early type mutant was isolated in 1968. The average yielding capacity of the variety under Hungarian conditions varies between 50-75 two-hundred weight per hectare. The variety will cover more than 4000 hectares in Hungary in 1977.
Published in „GENETIKA“ Vol. 8, No.3 (1976), pp. 227-232
© 1976 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
DISEASE RESISTANCE IN PLANTS. A CONCEPT INTEGRATING HORIZONTAL AND VERTICAL RESISTANCE
J.E. PARLEVLIET
Department of Plant Breeding (I. v. P), Agricultural University, Wageningen, The Netherands
Abstract
Parlevliet, J. E. (1976): Disease resistance in plants. A concept integrating horizontal and vertical resistance. - Genetika Vol. 8, No. 3, 227-232.
In a model it is shown that horizontal resistance can be derived from the cumulative effects of vertical genes with small effects. It is also shown in the model that such a polygenic system based on vertical or race-specific genes can be more stable than a polygenic system based on truly horizontal resistance genes.
Published in „GENETIKA“ Vol. 8, No.3 (1976), pp. 233-239
© 1976 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
TOLERANCE TO PUCCINIA RECONDITA TRITICI IN THE POPULATION OF TRITICUM AESTIVUM VULGARE AFTER MUTAGENIC TREATMENTS
Katarina BOROJEVIĆ
Faculty of Natural Sciences, University of Novi Sad, 21000 Novi Sad, Yugoslavia
Abstract
Borojevic, K. (1976): Tolerance to Puccinia recondita tritici in the population of Triticum aestivum vulgare after mutagenic treatments. - Genetika, Vol. 8, No. 3, 233-239.
The material in these investigations were mutant lines in the mm generation selected from the population of Triticum aestivum vulgare, cultivar San Pastore, after mutagenic treatments. The mutant lines of the resistance Types 0, 0/4T, and the lines of Type 4 of moderate tolerance were selected.
In order to estimate the tolerance, kernel number, kernel weight per spike, and 1000 kernel weight were studied. The tolerance was expressed as the ratio of kernel weight in rusted plots/kernel weight in unrusted plots.
The tolerance expressed as the kernel weight per spike was about 1 for Groups 0 and 0/4T compared with the control, which had a coefficient of tolerance of 0.95; Group 4 had much lower tolerance, 0.83, compared with Control 2 which had 0.86.
The tolerance expressed by the weight of 1000 kernels was 0.94 for Group 0; 0.96 for Group 0/4T and 0.90 for Control 1; for Group 4 it was 87 and for Control 2 - 87.
Published in „GENETIKA“ Vol. 8, No.3 (1976), pp. 241-246
© 1976 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
EVALUATION OF MUTAGENIC TREATMENT FOR INDUCTION OF MUTATIONS RESISTANT TO PUCCINIA RECONDITA TRITICI
Zora JELIČIĆ, Katarina BOROJEVIĆ and V. MOMČILOVIĆ
P.K. »Beograd«, Beograd, Faculty of Natural Sciences, Novi Sad and Faculty of Agriculture, University of Novi Sad, 21000 Novi Sad, Yugoslavia
Abstract
Jeličić, Z., Borojević, K. and Momčilović, V. (1976): Evaluation of mutagenic treatment for induction of mutations resistant to Puccinia recondita tritici. - Genetika, Vol. 8, No. 3, 241-246.
This paper deals with resistance to Puccinia recondita tritici after mutagenic treatments of three wheat cultivars - Sava Aurora and Siete Cerros - which showed different reactions in the type of infection, severity and tolerance to Puccinia recondita tritici.
The treatments of El (0.05%, 0.025%) and of EMS (0.5%, 1%) induced changes only in the greenhouse. The dose of 1% EMS increased variability in the tolerance. The results also showed that doses of El and of EMS and 5000 rads of gamma rays were not sufficient to induce changes in the type of infection and tolerance.
Published in „GENETIKA“ Vol. 8, No.3 (1976), pp. 247-254
© 1976 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
ISOLATION, TRANSFER AND INDUCTION OF DISEASE RESISTANCE IN CAPSICUM
F. SACCARDO, K. SREE RAMULU and L. TOMARCHIO
Laboratorio Valorizzazione Colture Industriali del CNEN, CSN, Casaccia, C. P. 2400, 00100 Rome, Italy
Abstract
Saccardo, p., Sree Ramulu, K. and Tomarchio, L. (1976): Isolation, transfer and induction of disease resistance in Capsicum. - Genetika, Vol. 8, No. 3, 247-254.
In Capsicum, the principal diseases in Italy for which no good sources have yet been found within the cultivars of C. annuum are the »wilt diseases« Verticillium dahliae and Phytophthora capsici and the virus disease Cucumber mosaic virus (CMV).
Five wild species were analysed (C. frutescens, C. chinense, C. chacoense, C. pendulum and C. pubescens). C. frutescens and C. chineuse showed resistance to V. dahliae and Ph. capsici and an interspecific hybridisation programme was started. None of the wild species showed any resistance to CMV; for this disease a screening technique was set up by using mutagenic agents in order to isolate the mutant types among the treated population in the prominent agronomic cultivars of C. annuum.