Abstract Sufficient quantity and quality of water are essential for vegetable production. Evaluat... more Abstract Sufficient quantity and quality of water are essential for vegetable production. Evaluating the individual and combined effects of drought and salt stress on plant establishment may help inform management of plant production in terms of stabilizing yield. This study investigates the effects of drought and salt stress on plant growth, nutrition elements, and select physiological parameters of tomato (Lycopersicon esculentum L. cv. H2274) through a pot experiment under greenhouse conditions. Drought stress was applied to tomato seedlings at 3 different levels of irrigation: D0 (control), D1, and D2 at 100%, 75%, and 50% field capacity, respectively. Salinity stress was applied at 3 different doses S0, S1, and S2 at 0 mM, 100 mM, and 150 mM NaCl, respectively. The effects of salinity, drought and their co-occurring stresses on growth, physiological and photosynthetic properties of tomato seedlings were statistically significant. Photosynthetic rate (Pn), stomatal conductance (gs), chlorophyll reading value (CRV), and plant dry weight (DW) decreased with salt and drought treatments. However, electrolyte leakage (EL) of the leaves increased with increasing salt and drought treatments. Fresh weight (FW) of the tomato seedlings decreased 67% under the 150 mM NaCl treatment (S-2), and decreased 69% under severe drought (D2); however, the interactive effects of these two treatments together (S2D2) resulted in an 80% decrease in FW. Furthermore, dry weight (DW) decreased 80% in the S2D2 treatment compared to the control. In general, both drought and salinity altered the mineral nutrient composition by decreasing N, P, K, Fe, Ca and Z content of the tomato seedlings, but Na, B and Cl content increased. These results show that effects of salinity and drought on tomato seedlings were less detrimental for plant establishment than the combined effects of the two stresses together.
Within the scope of this study, seeds were collected from Gypsophila bicolor (Freyn&Sint.) Grossh... more Within the scope of this study, seeds were collected from Gypsophila bicolor (Freyn&Sint.) Grossh plants in their natural environment and two different locations (Turkey). The research was carried out to determine the effects of paclobutrazol applied at different concentrations (0.6, 0.9, 1.2, 1.5- and 2.0-ml L-1) on the seedling height control in the cotyledon leaf stage of G. bicolor. As a result of the study, it was determined that the decrease in the number of leaves per plant was determined at a dose of 1.2 mg L-1 paclobutrazol. The effect of paclobutrazol treatments on the seedling height control of G. bicolor changed according to the genotype as well as the dose. As the dose of paclobutrazol applied increased, the number of side branches decreased. It was determined that the seedling stem thickness increased in 47.71% with the dose of 2.0 mg L-1 when compared to the control treatment. The application in which the highest chlorophyll (SPAD) value was obtained from the applicat...
Journal of Agricultural Science and Technology, 2020
To extend the genetic base of Iranian tomato germplasm, 93 landraces were collected from the nort... more To extend the genetic base of Iranian tomato germplasm, 93 landraces were collected from the northwest of Iran and East Anatolian of Turkey, along with three commercial cultivars, and their genetic structure were studied using 39 SSR primers. Thirty-five polymorphic SSR loci generated a total of 118 alleles in the studied germplasm. Number of alleles per locus and effective number of alleles averaged 3.37 and 2.47, respectively. Expected heterozygosity of SSRs varied from 0.227 (TMS24) to 0.773 (LEta016), averaged 0.558. The mean number of alleles per genomic-SSRs (3.61) was more than that of ESTSSRs (2.66). Cluster analysis using Neighbour Joining (NJ) method placed 96 tomato genotypes in eight groups. Little congruence was found between NJ dendrogram and geographical distances. Genetic structure analysis of the germplasm using Bayesian method revealed two sub-populations and separated cherry tomatoes from the other landraces and commercial cultivars. Out of the 21 morphological ch...
This study was carried out to determine the genetic diversity based on the morphological characte... more This study was carried out to determine the genetic diversity based on the morphological characteristics of pinto and fresh bean germplasm. In the study, 70 local pinto and fresh bean genotypes collected from Erzincan and four commercial varieties were used as control. 12 bean genotypes (5 pinto bean and 7 fresh bean genotypes) having string pod and inadequate seed were removed from the study in the first year. In the second year of the experiment, 58 genotypes were used and morphological characteristics were determined in these genotypes. All genotypes involved in the study showed different characteristics in terms of all morphological features. According to the cluster analysis, genotypes were divided into 3 groups. In the three groups, the first cluster includes 11.29% of total genotypes, second cluster including 37.1% of total genotypes and third cluster including %51.61 of total genotypes. The highest genetic distance was determined between ULU-44 and ÇYR-32 genotypes. Genotype...
The study was conducted to determine the genetic diversity and correlation among the different tr... more The study was conducted to determine the genetic diversity and correlation among the different traits in tomato germplasm. Ninety-seven landraces collected from Igdir city (East Anatolian region) of Turkey and North-West of Iran, along with three commercial cultivars were studied during two years. Tomato genotypes showed genetic diversity in all the studied characters. Fruit shape of genotypes contained flattened, slightly flattened, rounded, cylindrical, cordate, ovate, obovate, pyriform and obcordate. In fruit color, red, dark red, orange, yellow and in fruit size, very small, small, intermediate and large were observed. Correlation analysis showed the genotypes with high yield, had large fruit, firm fruit, high blossom end rot and sun scald, small plant size, sparse foliage density, low seed amount/fruit size. Cluster analysis classified genotypes in six groups, so that genotypes with different vegetative and generative charactreristics were located separate groups. Keywords : Ge...
Mantar insan sagligi acisindan onemli besinlerden biri olup, protein, mineral, vitamin vb. icerik... more Mantar insan sagligi acisindan onemli besinlerden biri olup, protein, mineral, vitamin vb. icerikleri bakimindan tercih edilmektedir. Ayrica cogu mantar turleri metabolik ozelliklerinden dolayi saglik acisindan degerlendirilmektedir. Mantarlar farkli degerlendirme sekilleri ile sofralarda yer almaktadir. Uretim acisindan diger tarimsal urunlerden daha az uretilmesine ragmen tuketici talebi fazladir. Mantarlarin genel itibariyle hasattan sonra kisa surede kalitesini kaybetmesi tuketiminin de kisa surede yapilmasini zorunlu kilmaktadir. Bununla birlikte, gerek uretim sirasinda gerekse hasattan sonra yapilan bazi uygulamalar ile mantarlarin uzun surede muhafazasi mumkun olabilmektedir. Bunlar disaridan yapilan kimyasal uygulamalar oldugu gibi, isinlama ve ambalajlama teknikleri, depolama kosullari vb. uygulamalardir. Bu derleme makalesinde mantar muhafazasinda kullanilabilen bazi uygulamalar cesitli arastirmacilarin yaptiklari calismalar dogrultusunda verilmistir.
Abstract Sufficient quantity and quality of water are essential for vegetable production. Evaluat... more Abstract Sufficient quantity and quality of water are essential for vegetable production. Evaluating the individual and combined effects of drought and salt stress on plant establishment may help inform management of plant production in terms of stabilizing yield. This study investigates the effects of drought and salt stress on plant growth, nutrition elements, and select physiological parameters of tomato (Lycopersicon esculentum L. cv. H2274) through a pot experiment under greenhouse conditions. Drought stress was applied to tomato seedlings at 3 different levels of irrigation: D0 (control), D1, and D2 at 100%, 75%, and 50% field capacity, respectively. Salinity stress was applied at 3 different doses S0, S1, and S2 at 0 mM, 100 mM, and 150 mM NaCl, respectively. The effects of salinity, drought and their co-occurring stresses on growth, physiological and photosynthetic properties of tomato seedlings were statistically significant. Photosynthetic rate (Pn), stomatal conductance (gs), chlorophyll reading value (CRV), and plant dry weight (DW) decreased with salt and drought treatments. However, electrolyte leakage (EL) of the leaves increased with increasing salt and drought treatments. Fresh weight (FW) of the tomato seedlings decreased 67% under the 150 mM NaCl treatment (S-2), and decreased 69% under severe drought (D2); however, the interactive effects of these two treatments together (S2D2) resulted in an 80% decrease in FW. Furthermore, dry weight (DW) decreased 80% in the S2D2 treatment compared to the control. In general, both drought and salinity altered the mineral nutrient composition by decreasing N, P, K, Fe, Ca and Z content of the tomato seedlings, but Na, B and Cl content increased. These results show that effects of salinity and drought on tomato seedlings were less detrimental for plant establishment than the combined effects of the two stresses together.
Within the scope of this study, seeds were collected from Gypsophila bicolor (Freyn&Sint.) Grossh... more Within the scope of this study, seeds were collected from Gypsophila bicolor (Freyn&Sint.) Grossh plants in their natural environment and two different locations (Turkey). The research was carried out to determine the effects of paclobutrazol applied at different concentrations (0.6, 0.9, 1.2, 1.5- and 2.0-ml L-1) on the seedling height control in the cotyledon leaf stage of G. bicolor. As a result of the study, it was determined that the decrease in the number of leaves per plant was determined at a dose of 1.2 mg L-1 paclobutrazol. The effect of paclobutrazol treatments on the seedling height control of G. bicolor changed according to the genotype as well as the dose. As the dose of paclobutrazol applied increased, the number of side branches decreased. It was determined that the seedling stem thickness increased in 47.71% with the dose of 2.0 mg L-1 when compared to the control treatment. The application in which the highest chlorophyll (SPAD) value was obtained from the applicat...
Journal of Agricultural Science and Technology, 2020
To extend the genetic base of Iranian tomato germplasm, 93 landraces were collected from the nort... more To extend the genetic base of Iranian tomato germplasm, 93 landraces were collected from the northwest of Iran and East Anatolian of Turkey, along with three commercial cultivars, and their genetic structure were studied using 39 SSR primers. Thirty-five polymorphic SSR loci generated a total of 118 alleles in the studied germplasm. Number of alleles per locus and effective number of alleles averaged 3.37 and 2.47, respectively. Expected heterozygosity of SSRs varied from 0.227 (TMS24) to 0.773 (LEta016), averaged 0.558. The mean number of alleles per genomic-SSRs (3.61) was more than that of ESTSSRs (2.66). Cluster analysis using Neighbour Joining (NJ) method placed 96 tomato genotypes in eight groups. Little congruence was found between NJ dendrogram and geographical distances. Genetic structure analysis of the germplasm using Bayesian method revealed two sub-populations and separated cherry tomatoes from the other landraces and commercial cultivars. Out of the 21 morphological ch...
This study was carried out to determine the genetic diversity based on the morphological characte... more This study was carried out to determine the genetic diversity based on the morphological characteristics of pinto and fresh bean germplasm. In the study, 70 local pinto and fresh bean genotypes collected from Erzincan and four commercial varieties were used as control. 12 bean genotypes (5 pinto bean and 7 fresh bean genotypes) having string pod and inadequate seed were removed from the study in the first year. In the second year of the experiment, 58 genotypes were used and morphological characteristics were determined in these genotypes. All genotypes involved in the study showed different characteristics in terms of all morphological features. According to the cluster analysis, genotypes were divided into 3 groups. In the three groups, the first cluster includes 11.29% of total genotypes, second cluster including 37.1% of total genotypes and third cluster including %51.61 of total genotypes. The highest genetic distance was determined between ULU-44 and ÇYR-32 genotypes. Genotype...
The study was conducted to determine the genetic diversity and correlation among the different tr... more The study was conducted to determine the genetic diversity and correlation among the different traits in tomato germplasm. Ninety-seven landraces collected from Igdir city (East Anatolian region) of Turkey and North-West of Iran, along with three commercial cultivars were studied during two years. Tomato genotypes showed genetic diversity in all the studied characters. Fruit shape of genotypes contained flattened, slightly flattened, rounded, cylindrical, cordate, ovate, obovate, pyriform and obcordate. In fruit color, red, dark red, orange, yellow and in fruit size, very small, small, intermediate and large were observed. Correlation analysis showed the genotypes with high yield, had large fruit, firm fruit, high blossom end rot and sun scald, small plant size, sparse foliage density, low seed amount/fruit size. Cluster analysis classified genotypes in six groups, so that genotypes with different vegetative and generative charactreristics were located separate groups. Keywords : Ge...
Mantar insan sagligi acisindan onemli besinlerden biri olup, protein, mineral, vitamin vb. icerik... more Mantar insan sagligi acisindan onemli besinlerden biri olup, protein, mineral, vitamin vb. icerikleri bakimindan tercih edilmektedir. Ayrica cogu mantar turleri metabolik ozelliklerinden dolayi saglik acisindan degerlendirilmektedir. Mantarlar farkli degerlendirme sekilleri ile sofralarda yer almaktadir. Uretim acisindan diger tarimsal urunlerden daha az uretilmesine ragmen tuketici talebi fazladir. Mantarlarin genel itibariyle hasattan sonra kisa surede kalitesini kaybetmesi tuketiminin de kisa surede yapilmasini zorunlu kilmaktadir. Bununla birlikte, gerek uretim sirasinda gerekse hasattan sonra yapilan bazi uygulamalar ile mantarlarin uzun surede muhafazasi mumkun olabilmektedir. Bunlar disaridan yapilan kimyasal uygulamalar oldugu gibi, isinlama ve ambalajlama teknikleri, depolama kosullari vb. uygulamalardir. Bu derleme makalesinde mantar muhafazasinda kullanilabilen bazi uygulamalar cesitli arastirmacilarin yaptiklari calismalar dogrultusunda verilmistir.
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