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Search Results: 1 - 10 of 517 matches for " Zdravkovi? Jasmina "
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Characterization of onion genotypes by use of RAPD markers
Pavlovi? Nenad,ZdravkoviJasmina,Cviki? Dejan,Zdravkovi? Milan
Genetika , 2012, DOI: 10.2298/gensr1202269p
Abstract: In order to estimate, at the molecular level, the divergence of parental lines that were used in diallel crossbreeding for production of superior offspring (F1 generation hybrids) at the Institute for Vegetable Crops, the molecular analysis using five RAPD markers for five pairs of parents has been performed. It gives an insight into their genetic polymorphism and the possibility of their further use in breeding programs. Information from this research has pioneered the application of molecular markers of onion in Serbia. Analyses were performed using the RAPD primers, which in previous studies established a high degree of polymorphism. In all five cases there was a corresponding amplification of DNA segments. From totally 50 bands analyzed, the length of fragments ranged from 500 to 3000 bp. Number of polymorphic band per example was 8 to 13. In our research at the level of the analyzed primers, a high degree of polymorphism between analyzed genotypes has been found. Based on UPGMA dendogram, analyzed genotypes were divided into two main clusters and two subclusters.
The usage of mutant genotypes in tomato selection for specific traits at the institute for vegetable crops
ZdravkoviJasmina,Markovi? ?ivoslav,Zdravkovi? Milan,Mijatovi? Mirjana
Genetika , 2012, DOI: 10.2298/gensr1203701z
Abstract: In order to find a superdominant gene for yield, a collection of 350 samples with genes mutations and different expression in different phases of growth and development: fruit size, leaf shape, plant architecture, number of fruits, etc., has been studied (through multi-year research). Current seed production at the Institute for Vegetable Crops in Smederevska Palanka includes 26 hybrids and two in acceptation process, of different purposes and characteristics. The most common mutation genes in tomato selection at the Institute are: sp (self-pruning) inbuilt in determinant hybrids (Balkan F1, Marko F1, Rebus F1) and varieties (Narvik SPF, SP-109, Adonis), u (uniform ripening) - Lido F1, Atina F1, Danubius F1, rin (ripening inhibitor)- Nada F1, ampion F1, Sef F1, Sidra F1, Rebus F1, j (jointless) - Narvik, Adonis, SP-109, c (potato leaf) - Mi-13, Enigma F1, Rebus F1, Ph -2 (Phytophtora infestans resistance) - Luna F1, Zlatni jubilej F1, Sef F1. Quality of tomato fruits is defined by two groups of genes which determinate the organoleptic traits and nutrition composition. Organoleptic quality includes taste and smell, colour and texture of fruits established in variety differences, nutritive regime of plants, maturity phase and yield. Little is known about gene regulation, responsible for variation of these traits.
Combining abilities of inheriting first pod height of some French bean lines -Phaseolus vulgaris L.-
Zdravkovi? Milan,ZdravkoviJasmina,Stankovi? Ljiljana,Pavlovi? Nenad
Genetika , 2005, DOI: 10.2298/gensr0501065z
Abstract: First pod height is an important trait, especially for snap bean since it enables the mechanical harvesting. Cultivars with low first pod height may be cut, damaged or not harvested by mechanical harvesting. In our investigation six different snap bean genotypes were used for examination of the first pod height and diallel analysis. The result was obtained by using method 2 model 1 GRIFFING (1956) for analysis of combining abilities. The mode of inheritance was different, as the results showed - from intermediate to super dominance, for both generations (F1 and F2). Analysis of combining abilities showed both influence of additive and dominant gene effects. Combination umadinka x Zora is suitable for further breeding for first pod height.
Senescence of rin, rin/rin, rin/+ and +/+ tomato fruits
ZdravkoviJasmina,Markovi? ?ivoslav,Stankovi? Ljiljana,Zdravkovi? Milan
Genetika , 2004, DOI: 10.2298/gensr0403195z
Abstract: Ripening inhibitor (rin) gene is a spontaneous recessive mutant which changes fruit ripening aspects (most important synthesis of carotene, especially lycopene). It also delays fruit senescence. Tomato is a vegetable crop with specific maturing climax (pik). Tomato genotypes homozygote for rin gene does not have this maturing climax, so the ethyl-ene production and red, lycopene colour does not appear. In order to research the maturing process material from the final tomato selection cycle we used: pure line S-49 (genetic constitution u/u, with uniform ripening), line hom 4 (rin/rin, homozygote with ripening inhibitor) and hybrid combination 449 Fl (u/rin, heterozygote for ripening inhibitor). Fruits with uniform ripening and hybrids ripened simultaneously, while homozygote with rin gene did not ripe at all. Ethylene stimulates the appearance of yellow colour in rin fruits and the lycopene production. After treatment with ETEPHONE (0.1%) (Ethylene) fruits with uniform ripening, senescence more quickly, while hybrids senescence slowly. Rin homozygotes did not change colors, but the fruits senescence more quickly comparing to control. Ethylene treatment speeded the maturing and senescence process in tomato fruits. Extended maturing process as a result influence of rin gene, makes the new created hybrids a late maturing ones. On the other hand, the firmness of fruits is improved as well as the "shelf life", which enables longer transportation and storing, coordinated maturing according to market demands. The aim was to research the maturing according to market demands. The aim was to research the maturing process of rin heteroyzgote, and the reaction of some genotypes to treatment with RT-REL (Ethzlene) in order to decrease extremely late maturing.
The expression of tin gene in prolongated tomato fruit ripening - Lycopersicom esculentum Mill.
ZdravkoviJasmina,Markovi? ?ivoslav,Damjanovi? Milan,Zdravkovi? Milan
Genetika , 2003, DOI: 10.2298/gensr0302077z
Abstract: Tomato selection programme, aiming to create a tomato hybrid with better fruit firmness, has been based on adding rin gene in perspective selection material. The fruit firmness has been based on decelerated ripening which prolongs the shelf life. Heterozygote genotypes (rin/+) have considerably longer shelf life that genotypes with uniform ripening (+/+). The effects of rin gene on shelf life have been examined on four experimental hybrids (K 56S K - 18, K - 64 and K -15 - rin/+ genetic configuration) compared with Atina Fl genotype (uniform ripening +/+) K - 91 selected, line (rin/rin) and Fino F1 (DRS) unknown genetic construction and very good fruit firmness. The parameter for shelf life has been the fruit weight loss during the preservation - from harvest till the fading. The weight loss has been recorded every 7th day during two months. The experimental hybrids showed good agro technical characteristics of mid early tomato intended for production in the open field. During the shelf life, the genotype K - 15 faded the most slowly, both in the group of green and mature fruits.
The effect of genetic parameters on inheritance of the first pod hight in snap bean - Phaseolus vulgaris L.
Zdravkovi? Milan,ZdravkoviJasmina,Pavlovi? Nenad,?or?evi? Radi?a
Genetika , 2003, DOI: 10.2298/gensr0301031z
Abstract: In order to research the inheritance, gene effect, combination abilities and genetic variance components, we investigated six divergent snap bean genotypes (Supernor, Darija, Grinkrop, Palana ka rana, umadinka and Zora) and their F1 progeny created by diallel crossing without reciprocals. For the trait of height of forming the first pod, variance of average value of parents and hybrids was highly significant. The value of dominant components (H1 and H2) was higher than additive component (D), meaning that dominant genes control the inheritance of number of pods per plant. The average level of domination √Hl/D is higher than 1, pointing to superdomination. Heritability in broader sence amounts 90% pointing to high contribution in inheriting the number of pods per plant.
Characteristics important for organic breeding of vegetable crops
ZdravkoviJasmina,Pavlovi? Nenad,Girek Zdenka,Zdravkovi? Milan
Genetika , 2010, DOI: 10.2298/gensr1002223z
Abstract: The remarkable development and application of new genetic The Institute for Vegetable Crops possesses a rich germplasm collection of vegetables, utilized as gene resource for breeding specific traits. Onion and garlic breeding programs are based on chemical composition improvement. There are programs for identification and use of genotypes characterized by high tolerance to economically important diseases. Special attention is paid to breeding cucumber and tomato lines tolerant to late blight. As a result, late blight tolerant pickling cucumber line, as well as late blight tolerant tomato lines and hybrids are realized. Research on bean drought stress tolerance is initiated. Lettuce breeding program including research on spontaneous flora is started and interspecies hybrids were observed as possible genetic variability source. It is important to have access to a broad range of vegetable genotypes in order to meet the needs of organic agriculture production. Appreciating the concept of sustainable agriculture, it is important to introduce organic agriculture programs in breeding institutions.
Correlation of yield and yield components for afila and normal leave pea, Pissum sativum L.
?or?evi? Radi?a,ZdravkoviJasmina,Ze?evi? Bogoljub,Cviki? Dejan
Genetika , 2004, DOI: 10.2298/gensr0401039d
Abstract: In order to research the correlation of yield and yield components of Afila and normal leaf Pea, we conducted a three years research (1993 - 1995). We have researched a correlative junction of yield and yield components (number of pods, number of grains per pod, number of grains per plant and the absolute grain weight) of 8 Afila lines and 4 parent varieties. The results showed that the yield and yield components are highly related r - 0.82 - 0.95, while the absolute weight is not related to the yield r - 0, 19 and due to that it does not represent the yield component. The determined correlative values for all researched genotypes and parents were the same as previously researched by other authors, which leads us to the conclusion that the absence of leaves does not directly impact the change of correlative values.
Postharvest shelf life of tomato (Lycopersicon esculentum Mill.) mutanats (nor and rin) and their hybrids
Cviki? Dejan,ZdravkoviJasmina,Pavlovi? Nenad,Ad?i? Sla?an
Genetika , 2012, DOI: 10.2298/gensr1203449c
Abstract: Two tomato lines with normal maturation (NR-1 and NR-2) have been crossed with two mutant lines (NR-10 nor and NR-12 rin) with delayed maturation (shelf life). Determination of mutant genes has been done by χ2 test on 100 fruits from F2 generation. Fruits have been picked 65 days from antesis and kept for 60 days, when six evaluations have been done. Data have been collected every 10 days on parental lines and progeny F1 and F2 generation. Variance testing has been done on the basis of one- and two-factorial analysis and groups compared by contrasts. Fruits have been preserved in controlled conditions (in dark at 5°C). Tomato genotypes with nor or rin gene had desirable traits (delayed ripening, long shelf life and firm fruits) for modern selection, so they should be included in programmes aiming to create commercial F1 hybrids.
Inheritance of yield components in tomato
?or?evi? Radi?a,Ze?evi? Bogoljub,ZdravkoviJasmina,?ivanovi? Tomislav
Genetika , 2010, DOI: 10.2298/gensr1003575d
Abstract: The aim of the present study was to estimate, on the basis of diallel crossing, superior-parent heterosis, components of genetic variability and trait heritability for three yield components in tomato, and to perform the VrWr regression analysis. Six different tomato inbred lines originating from local and introduced breeding material were selected for the study. The hybrids expressed greater mean values for the majority of the traits than the inbred lines. The value of additive component of variance (D) was higher than the value of the dominant variance (H1 and H2) for the number of fruits per plant and the average fruit weight, while the value of the dominant component of variance was higher for the fruit weight per plant. Positive values of additive x dominant genetic effect interaction (F) for the observed traits point to a greater participation of dominant alleles in the inheritance of these traits, which was confirmed by the coefficients H2/4H1 (0.208-0.228) and by the ratio KD/KR being greater than unity (1.129-1.536). The values of the average degree of dominance H / D 1 , lower than unity for the number of fruits per plant and the average fruit weight, indicate that these traits were inherited by partial dominance. Furthermore, values of the degree of dominance greater than unity for the fruit weight indicate that this trait was inherited by dominance or superdominance. These conclusions were also confirmed by high values of the broad- and narrow-sense heritability that varied from 98.88% to 99.44%, i.e., from 45.06 to 87.51%, respectively, as well as, by the VrWr regression for the observed traits in the F1 generation.
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