Trait profiling and genotype selection in oilseed rape using genotype by trait and genotype by yield*trait approaches

Hossein ZEİNALZADEH TABRİZİ

Selection and breeding for high-yielding in oilseed rape have always been one of the leading objectives for oilseed rape breeders. This process becomes more complicated when all quantitative traits are considered in selection in addition to grain yield. In the present study, 18 oilseed rape genotypes along with 2 check cultivars (RGS003 and Dalgan) were evaluated across 16 environments (a combination of 2 years and eight locations) in the tropical climate regions of Iran during 2018–2019 and 2019–2020 cropping seasons. The experiments were conducted in a format of randomized complete block des ...More

Occurrence, identification and phylogenetic analyses of cereal cyst nematodes in Kyrgyzstan

Şenol YILDIZ | Tair Esenalı Uulu

The study investigated the status of cereal cyst nematodes (CCN) in the main wheat-growing areas of Kyrgyzstan in 2020. Soil samples were taken from 69 different wheat fields located in Chuy and Issyk-Kul provinces. CCN were found in thirty-one out of the sixty-nine locations surveyed. The highest occurrence of CCN was in the Tyup location in Issyk-Kul province with 81 cysts (250 cm3 soil)-1. The CCN populations were identified by both morphological and molecular analyses. According to the results, all populations were identified as Heterodera filipjevi. No variations in rDNA-ITS sequencing da ...More

Evaluation of wheat (Triticum aestivum L.) lines for drought tolerance in Kyrgyzstan

Venera İSAYEVA

The study was carried out to explore drought stress indices in F4 hybrid generations of Triticum aestivum L. to select drought stress tolerant lines for rainfed areas of Kyrgyzstan. Wheat is the main food crop in Kyrgyzstan. There are about 0.3 million ha allotted for wheat, more than half of these sown areas (0.2 million ha) are in rainfed farming zones, where the amount of precipitation rarely exceeds 300-400 mm per year. The study was conducted in 2019 at the experimental field of Agricultural Faculty of Kyrgyz-Turkish Manas University. Eighteen hybrid lines of spring wheat and two released ...More

Analysis of genotype by environment interaction to identify high-yielding and stable oilseed rape genotypes using the GGE-biplot model

Hossein ZEİNALZADEH TABRİZİ

Spring oilseed rape is one of the major oilseed crops produced in different regions of Iran's tropical climates. Because of the various climatic and geographical conditions of the tropical areas of Iran, it is necessary to release high-yielding cultivars with broad adaptability to the various tropical regions. The main objective of this study was to identify high-yielding and stable spring oilseed rape genotypes among some new oilseed rape genotypes via analysis of genotype by environment interaction using the GGE biplot model. To this end, multi environmental trials (METs) were conducted acro ...More

Nematode-citrus plant interactions: host preference, damage rate and molecular characterization of Citrus root nematode Tylenchulus semipenetrans

Şenol YILDIZ

center dot Citrus plants are host to several plant parasitic nematodes (PPNs), which are microscopic organisms. Among PPNs, the citrus root nematode, T. semipenetrans (Cobb 1913) (Tylenchida: Tylenchulidae), causes significant damage to citrus plantations worldwide. Understanding citrus nematode populations, precise identification, host preference among citrus species, and damage threshold are crucial to control T. semipenetrans. The minutiae of citrus plant-nematode interactions, nematode density and molecular nematode identification are not well understood. In this study, nematode species an ...More

Identification of water stress-tolerant edible pumpkin seed (Cucurbita pepo) genotypes using seed yield-based tolerance indices

Atilla DURSUN

Pumpkin is usually cultivated in arid and semiarid regions, and the lack of water stress-tolerant cultivars is a major limiting factor. Therefore, this study was carried out to identify superior water stress-tolerant genotypes. For this purpose, 44 inbred lines with superior agronomic traits were selected from the gene pool. In addition, two hybrids (G1-Mert Bey F1 and G2-Sena Hanim F1) and two landraces (G3-Hatun Tırnağı and G4-Cercevelik) with high commercial value were used as commercial cultivars. The water stress indices were calculated from seed yields from the pumpkin genotypes grown in ...More

Heritability, genetic advance and sequential path analysis of oil yield and related traits in spring oilseed rape genotypes

Hossein ZEİNALZADEH TABRİZİ

The efficiency of crop breeding programs is largely driven by the availability of genetic diversity and the inheritance of desirable traits. Heritability, genetic advance and sequential path analysis were assessed in 26 spring oilseed rape genotypes in a randomized complete block design with three replicates over two crop years 2018-2020 at the experimental field of Moghan Agricultural Research Station, Parsabad, Iran. Several morpho-physiological characteristics were recorded during the experiments. Genetic characteristics, heritability, and genetic advance in oilseed rape genotypes were esti ...More

Identification of Microbial Populations Present in Agricultural and Nonarable Soils in the Talas Valley, Northern Kyrgyzstan, in Autumn

Tinatin DOOLOTKELDİEVA | Saykal BOBUŞOVA | Mahabat KONURBAYEVA

Soil bacterial and fungal communities were investigated in relation to soil type and farm management practices after vegetation harvesting in autumn. Soils from fields cultivated with Phaseolus vulgaris (bean) and Pyrus comminus (pear) and nonarable, natural areas were studied. Microbial diversity was analysed using cultivation-dependent methods (isolation of pure cultures) and cultivation-independent methods (direct extraction of DNA from soil, followed by PCR amplification of the 16S rRNA and 18S rRNA genes). The use of cultivation-dependent methods revealed that there were no differences in ...More

Detection and identification of citrus long-horned beetle, Anoplophora chinensis (Forster, 1771) (Coleoptera: Cerambycidae) a new pest in Antalya Province, Turkey by sequencing of mtCOI region

Hüseyin GÖÇMEN

In 2016, Anoplophora chinensis (Forster, 1771) (Coleoptera: Cerambycidae) was recorded for the first time on Acer negundo L. in Antalya Province, Turkey. Genetic identification of adult samples was made based on approximate alignment of a 729-bp sequence of the mitochondrial cytochrome oxidase I gene region. The sequence alignment in the BLAST analysis from the NCBI Genbank showed 99% similarity with A. chinensis. The sequence data was deposited to NCBI Genbank. A phylogenetic analysis was performed by using the sequence data belonging to A. chinensis and some species of same genus obtained fr ...More

Effects of some plant extracts on root-knot nematodes in vitro and in vivo conditions

İlker KEPENEKÇİ

One of the major pests of the vegetables, root knot nematodes (Meloidogyne spp.) (Tylenchina: Meloidogynidae) (RKNs) can cause economic losses by forming knots on the host plant roots. RKNs are more prevalent in the greenhouse vegetable growing areas of the coastal regions. In this study, the effects of plant extracts from five different plants; Capsicum frutescens, Hyoscyamus niger (Solanaceae), Melia azedarach (Meliaceae), Xanthium strumarium and Achillea wilhelmsii (Asteraceae) were evaluated against RKNs. In the first studies; the effects of plant extracts (0.5, 1.0, 1.5, 3.0, 6.0 and 12.0 ...More

Effect of Hoof Trimming on Milk Yield in Dairy Cows with Foot Disease

Murat KİBAR

Backround: Milk is produced at the cost of other metabolic processes in the body and high milk yield has been associated with lameness and claw lesions. Lameness has also been associated with a decrease in milk yield. In the past, claw disorders and lameness in dairy cattle have been an increasing problem of the modern dairy industry. Hoof trimming is performed to prevent hoof lesions and improve gait by correction and maintenance of the hoof symmetry and shape. Lameness caused by hoof disorders can be treated by correct hoof trimming. The aim of this study was to test the hypothesis that one- ...More

Ecology and Prevalence of Actynomyces-Antagonists in Soils of Kyrgyzstan

Tinatin DOOLOTKELDİEVA