GENETIKA, Vol

GENETIKA, Vol. 8, No.1 (1976)

T.R. SHARMA, S.K. BANERJEE, Daljit SINGH and A.K. KAUL

STUDY OF DISTRIBUTION PARAMETERS AND CORRELATION AMONG VARIOUS QUALITY CHARACTERS IN WHEAT (TRITICUM AESTIVUM L.) [Abstract]

Č. JOVANOVIĆ, P. SHIVAJI, B DZAH and L. KAUSAL

THE USE OF GENETIC MODIFIERS TO ENHANCE THE PERFORMANCE OF OPAQUE-2 MAIZE [Abstract]

R.D. SINGH, A.B. JOSHI, N.L. DHAWAN and B.K. MUKHERJEE

STUDIES IN ELITE INDIAN MAIZE COMPOSITES. II. ATTEMPTS AT FURTHER IMPROVEMENT USING THE FULL-SIB SYSTEM OF BREEDING [Abstract]

M.L.H. KAUL and N.K. MATTA

RADIATION-GENETIC STUDIES IN THE GARDEN PEA. IlI MORPHOLOGICAL VARIABILITY, INTERCORRELATIONS AND GENETIC PARAMETERS [Abstract]

Š. HRAŠKA

INTERACTION OF THE GENOTYPE AND ENVIRONMENT IN THE PRESENCE OF THE EFFECT OF HETEROSIS IN WHEAT [Abstract]

Vesna HADŽI-TAŠKOVIĆ-ŠUKALOVIĆ and Danica JELENIĆ

A STUDY OF PROTEIN FRACTIONS OF OPAQUE-2 AND NORMAL MAIZE HYBRIDS AT DIFFERENT STAGES OF MATURITY [Abstract]

R.J. PETROVIĆ and M.S. MIŠOVIĆ

VARIATION OF DRY MATTER AND SUGARS IN DOUGH STAGE KERNELS OF SWEET CORN INBRED LINES AND F1 GENERATION (ZEA MAYS V. SACCHARATA) [Abstract]

D. RISTANOVIĆ and M. MIŠOVIĆ

YIELD AND POPPING EXPANSION OF INBRED LINES AND F1 HYBRIDS IN POPCORN (Zea mays everta) [Abstract]

Radmila KONEČNI

THE RUBINSTEIN - TAYBI SYNDROME IN A THIRTEEN YEAR OLD GIRL [Abstract]

Published in „GENETIKA“ Vol. 8, No.1 (1976), pp. 1-15

Serbia

Original scientific paper

STUDY OF DISTRIBUTION PARAMETERS AND CORRELATION AMONG VARIOUS QUALITY CHARACTERS IN WHEAT (TRITICUM AESTIVUM L.)

T.R. SHARMA, S.K. BANERJEE, Daljit SINGH and A.K. KAUL

Indian Agricultural Research Institute, New Delhi, India

Abstract

Sharma, T.R., Banerjee, S.K., Singh, D. and Kaul, A.K. (1976): Study of distribution parameters and correlation among various quality characters in wheat (Triticum aestivum L.). - Genetika, Vol. 8, No. 1, 1-15.

Distribution parameters namely, means, coefficients of variability, skewness and kurtosis, and phenotypic correlation coefficients for various quality characters were computed for parents and progenies in two wheat crosses (including reciprocals) involving three varieties. The populations studied were P₁, P₂, F_;, F₃, BC₁ and BC₂. Except for the thousand kernel weight, the mean values for DBC, protein content and protein index were similar in different populations. Considering the coefficient of variability, DBC showed the minimum variability and the thousand kernel weight, the maximum. The parents revealed no significant values for either skewness or kurtosis. However, in various generations of the crosses, both negative and positive significant values were found for skewness. All the significant values for kurtosis were found to be positive in direction. Correlation studies revealed that the kernel weight was negatively (and significantly) correlated with all the quality characters. DBC and protein content were positively correlated.

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Published in „GENETIKA“ Vol. 8, No.1 (1976), pp. 17-26

Serbia

Original scientific paper

THE USE OF GENETIC MODIFIERS TO ENHANCE THE PERFORMANCE OF OPAQUE-2 MAIZE

Č. JOVANOVIĆ, P. SHIVAJI, B DZAH and L. KAUSAL

Maize Research Institute, 11080 Zemun, Yugoslavia and CIMMYT, Londres 40, Mexico 6, D.F.

Abstract

Jovanović, C., Shivaji, P., Dzah, B. and Kausal, L. (1976): The use of genetic modifiers to enhance the performance of opa-que-1 maize. - Genetika, Vol. 8, No. 1, 17-26.

Two opaque-2 segregating materials (yellow and white) were screened for desirable opaque-2 modifiers that improve kernel vitreosity and maintain high protein quality. The modified kernels were classified according to the degree of vitreosity into 4 categories, namely Category i: - 25% opaque, 75% vitreous; Category 2: - 50% opaque, 50% vitreous; Category 3: - 75% opaque, 25% vitreous; Category 4: - more then 75% opaque and less then 25% vitreous. One hundred-grain weight for the normal 100% vitreous kernels and the 4 categories of modified kernels was recorded and their protein and tryptophan contents determined.

There was a general trend for an increase in weight as vitreosity increased. Also, the decline in weight of modified kernels of categories 1 and 2 of some families compared to their normal counterpart was negligible. The protein content in the endosperm of normal kernels was significantly higher than that in the modified kernels. On the other hand, each category of modified kernels had tryptophan levels almost double that of the normal. The modifiers of categories 1 and 2 may be useful in breeding program as they seem to impart higher grain weight and an acceptable phenotype to opaque-2 maize.

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Published in „GENETIKA“ Vol. 8, No.1 (1976), pp. 27-35

Serbia

Original scientific paper

STUDIES IN ELITE INDIAN MAIZE COMPOSITES. II. ATTEMPTS AT FURTHER IMPROVEMENT USING THE FULL-SIB SYSTEM OF BREEDING

R.D. SINGH, A.B. JOSHI, N.L. DHAWAN and B.K. MUKHERJEE

Indian Agricultural Research Institute, New Delhi - 110012, India

Abstract

Singh, R. D., Joshi, A. B., Dhawan, N. L. and Mukherjee, B. K. (1976): Studies in elite Indian maize composites. II. Attempts at farther improvement using the full-sib system of breeding - Genetika, Vol. 8, No. 1, 27-35.

Full-sib family selection was used to achieve further improvement in two commercially released Indian maize composites namely, Kisan and Jawahar. Substantial gains were obtained in yield, yield components, days to silk and plant height. Average improvement in yield in comparison with the parental composites was of the order of 12-16 per cent. On average, full-sib families were a week earlier in silking and 8-10 centimeters shorter in plant height. Full-sib family selection was found to be more efficient than mass selection, when predictions were made on the basis of gene effects.

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Published in „GENETIKA“ Vol. 8, No.1 (1976), pp. 37-47

Serbia

Original scientific paper

RADIATION-GENETIC STUDIES IN THE GARDEN PEA. IlI MORPHOLOGICAL VARIABILITY, INTERCORRELATIONS AND GENETIC PARAMETERS

M.L.H. KAUL and N.K. MATTA

Cytogenetics Laboratory, Botany Department, Kurukshetra University, Kurukshetra, India

Abstract

Kaul, M. L. H. and Matta, N. K. (1976): Radiation-genetic studies in the garden pea. III. Morphological variability, inter-correlations and genetic parameters. - Genetika, Vol. 8, No. 1, 37-47.

A study of variation among yield affecting traits of high protein genotypes in the garden pea and their initial lines revealed considerable genetic variability indicating high scope for selection. While majority of the high protein lines selected were low yielding, one line exhibited a high yield and a rich protein content. Significant correlation coefficients were observed between the character pairs: shoot height and node number, days to flower and fruit maturity, pods per plant and seeds per plant, pods per plant and grain yield. Multiple correlation coefficient values showed that 82 percent of the variance realised in grain yield is accounted by its association with the pod and seed number borne by a pea plant and the remaining 18 percent is due to interaction with other plant variables.

High heritability values for node number, days for fruit maturity, seeds per pod, days to flower, pods per plant and 1000 grain weight indicate their usefulness in selection on a phenotypic basis. The high genetic advance for the traits: seeds per pod, node number, 1000 grain weight and pods per plant indicates their potential usefulness for expected genetic progress under selection pressure. Traits like grain weight, seeds per pod and pods per plant revealed a high genotypic coefficient of variability, heritability and genetic advance, and thus, form the most reliable basis for selection for practical purposes. Because of their strong association with grain yield, these traits may be regarded as most suitable and dependable phenotypic markers for grain yield.

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Published in „GENETIKA“ Vol. 8, No.1 (1976), pp. 49-61

Serbia

Original scientific paper

INTERACTION OF THE GENOTYPE AND ENVIRONMENT IN THE PRESENCE OF THE EFFECT OF HETEROSIS IN WHEAT

Š. HRAŠKA

Department of Plant Breeding, University of Agriculture, Nitra, CSSR

Abstract

Hraška, Š. (1976): Interaction of the genotype and environment in the presence of the effect of heterosis in wheat.- Genetika, Vol. 8, No. 1, 49-61.

The effect of heterosis has been evaluated in 14 quantitative characters of intervarietal hybrids of winter wheat in dependence on the conditions of the environment. The F₀, generation was divided into two portions, of which one portion was cultivated in 1972/73 and the other in 1973/74. It was found that the effect of heterosis and its intensity in the individual quantitative characters depend not only on the hybrid combination, but also on its interaction with the environment. It is manifested first of all in the fact that some characters are more stable in the manifestation of the effect of heterosis, some are less stable. The direction of crossing, too, has an influence on the occurrence and intensity of the interaction of the genotype with the environment.

It follows from the above mentioned that in the formation of hybrid wheat it is necessary to determine also the stability of the effect of heterosis and the influence of reciprocal combinations on the stability and intensity of the effect of heterosis.

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Published in „GENETIKA“ Vol. 8, No.1 (1976), pp. 63-70

Serbia

Original scientific paper

A STUDY OF PROTEIN FRACTIONS OF OPAQUE-2 AND NORMAL MAIZE HYBRIDS AT DIFFERENT STAGES OF MATURITY

Vesna HADŽI-TAŠKOVIĆ-ŠUKALOVIĆ and Danica JELENIĆ

Maize Research Institute, 11080 Zemun, Yugoslavia

Abstract

Hadži-Taškovic-Šukalović, V. and Jelenić, D. (1976): A study of protein fractions of opaque-2 and normal maize hybrids at different stages of maturity. - Genetika, Vol. 8, No. 1, 63-70.

The content and composition of proteins has been determined in the whole grain of ZP SC-3 hybrid and its opaque-2 form ZP SC-3 o₂ at three stages of maturity namely 20, 34 and 60 days after pollination. The decrease in total protein content and differences in amounts of amino acids show that the metabolism of nitrogen compounds is intensive during the maturity period. At all three stages of maturity of the grain it was found that differences in the composition of protein fractions existed between the opaque-2 and normal hybrids. Differences also existed between the stages of maturity.

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Published in „GENETIKA“ Vol. 8, No.1 (1976), pp. 71-80

Serbia

Original scientific paper

VARIATION OF DRY MATTER AND SUGARS IN DOUGH STAGE KERNELS OF SWEET CORN INBRED LINES AND F₁ GENERATION (ZEA MAYS V. SACCHARATA)

R.J. PETROVIĆ and M.S. MIŠOVIĆ

Maize Research Institute, Zemun-Polje, 11080 Zemun, Yugoslavia

Abstract

Petrović, R. J. and Mišović, M. S. (1976): Variation of dry matter and sugars in dough stage kernels of sweet corn inbred lines and F, generation (Zea mays saccharata). - Genetika, Vol. 8, No. 1, 71-80.

The recessive gene sui prevents the conversion of sucrose into starch in pre-dough stage kernels of sweet corn (Zea mays saccharata). For this reason kernels of this genotype are rich in sucrose and, therefore, suitable for human nutrition. Investigations were conducted on 45 su\ maize genotypes of sweet corn 21 and 26 days after pollination. The object of the study was to establish the variation of dry matter, sucrose and reducing sugar contents in kernels and to determine the genetic potential of various genotypes. These investigations have shown that there are differences between sweet corn genotypes both in content of dry matter and in free sugar content in the kernels. A greater content of reducing sugars was found in the parent inbred lines, while a greater content of sucrose was found in the Fi generation.

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Published in „GENETIKA“ Vol. 8, No.1 (1976), pp. 81-88

Serbia

Original scientific paper

YIELD AND POPPING EXPANSION OF INBRED LINES AND F₁ HYBRIDS IN POPCORN (Zea mays everta)

D. RISTANOVIĆ and M. MIŠOVIĆ

Institut za kukuruz, 11080 Zemun, Jugoslavia

Abstract

Ristanović, D. i Mišović, M. (1976): Yield and popping expansion of inbred lines and F₁ hybrids in popcorn (Zea mays everta). - Genetika, Vol. 8, No. 1, 81-88.

Yield and popping expansion of popcorn kernels was investigated in 14 inbred lines and 13 F₁ hybrids. A strong negative correlation was found between yield and popping expansion. However, the data obtained for some of the investigated F, hybrids indicated that there is a possibility of obtaining popcorn genotypes with both good popping expansion and a satisfactory yield.

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Published in „GENETIKA“ Vol. 8, No.1 (1976), pp. 91-98

Serbia

Original scientific paper

THE RUBINSTEIN - TAYBI SYNDROME IN A THIRTEEN YEAR OLD GIRL

Radmila KONEČNI

Institut za pedijatriju »Dr Olga Popović-Dedijer« Kliničke bolnice grada Beograd, 11000 Beograd, Jugoslavija

Abstract

Konečni, R. (1976): The Rubinstein-Taybi syndrome in a thirteen year old girl. - Genetika, Vol. 8, No. 1, 91-98.

In 1963 Rubinstein and T a y b i described a syndrome of multiple congenital abnormalities characterised by broad thumbs and broad great toes, peculiar faces and retardation in mental and physical development, with other additional possible anomalies. Up to now over 100 cases of this syndrome have been reported in the literature. The 13 year old girl referred to in this paper has all the characteristics of the syndrome and is the first case described in this country.

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