New data on the vertical distribution of nematode communities in mountain ecosystems of Mount Zarafshan, Uzbekistan

NARZULLAYEV, SARDORBEK BAKHRIDDINOVICH

doi:10.13057/biodiv/d230814

Cited by 5 publications

(7 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Studies in the Zarafshan Valley so far have reported only one species of RKN (M. hapla) (Narzullayev, 2022). In these studies, the identification of nematode species was based solely on morphometric parameters.…”

Section: Discussionmentioning

confidence: 99%

Morphological and molecular characterization of root-knot nematodes from Uzbekistan

Mirzaev,

Kuchboev,

Mavlyanov

et al. 2024

Biosys. divers.

View full text Add to dashboard Cite

Plant-parasitic nematodes are of great economic importance as widespread harmful plant pests of the world. Among them, root-knot nematodes, especially species of the genus Meloidogyne, cause significant damage to agriculture. In this paper the species composition, morphological and molecular genetic characteristics of root-knot nematodes in vegetable crops of the Zarafshan Valley of Uzbekistan were studied. As a result of morphological studies, three species belonging to the genus Meloidogyne were found in Samarkand region of the Zarafshan Valley; these species were Meloidogyne javanica, M. incognita and M. hapla identified by concentric lines in the anal-vulvar part of sexually mature female nematodes. The results show that the anal arch of M. javanica and M. hapla is low, and that of M. incognita is high. In order to additionally characterize the species of the discovered root-knot nematodes, we carried out their molecular identification. However, nucleotide sequence analysis in the 5S–ITS2 region of rDNA showed no differences between M. javanica and M. incognita, the overall difference being to 0.6%. These data indicate that both these taxa belong to the one species based on 5S–ITS2 region, but this datum should be supplemented by additional research with other genes. The sequence differences between the species M. javanica or M. incognita with species M. hapla amounted to 23%. Species analysis based on the analysis of morphological and molecular genetic indicators of root-knot nematodes is important because it was conducted for the first time in Central Asia. The studies conducted indicate that M. hapla, M. javanica and M. incognita are common on tomato farms in Payaryk, Akdarya and Jambay districts of Samarkand region of Uzbekistan.

show abstract

Section: Discussionmentioning

confidence: 99%

Morphological and molecular characterization of root-knot nematodes from Uzbekistan

Mirzaev,

Kuchboev,

Mavlyanov

et al. 2024

Biosys. divers.

View full text Add to dashboard Cite

show abstract

“…The biological diversity of pastures of the arid regions of the southwestern region of Uzbekistan is of interest to local and foreign researchers because it changes over the seasons and years, yet it is little studied. Valiyev et al (2023), Jurakulov et al (2023), Kudratov et al (2023), Zokirova et al (2022), and Narzullayev (2022; recorded important information about the composition, distribution, and importance of the flora and fauna of this area as a result of their extensive research. At the same time, the degradation of pastures in arid regions is intensifying, as observed all over the world in recent years (Rajabov et al 2022).…”

Section: Introductionmentioning

confidence: 99%

The productivity, chemical composition and nutritional value of pastures dominated by Artemisia diffusa and Cousinia resinosa in arid lands of southwestern Uzbekistan

BAZAROV,

RAJAMURADOV,

SAFIN

et al. 2023

Biodiversitas

View full text Add to dashboard Cite

Abstract. Bazarov B, Rajamuradov Z, Safin M, Rajabov A, Khayitov D, Kuziev M, Aminjonov S, Ismayilova M, Kudratov J, Khujabekov M, Khaydarov D. 2023. The productivity, chemical composition and nutritional value of pastures dominated by Artemisia diffusa and Cousinia resinosa in arid lands of southwestern Uzbekistan. Biodiversitas 24: 3916-3923. In recent years, extensive degradation of pastures has been observed all over the world as a result of drastic changes in climate and the increase of anthropogenic factors. As a result, the biological diversity of plant communities in pastures decreases, and specific changes occur in dry mass productivity, nutritional value, and other indicators of plant biomass. Therefore, studies aimed at assessing the condition of the vegetation in pastures are important. This research is one of the first studies of this type aimed at determining the biomass yield of pastures dominated by Artemisia diffusa Krasch. ex Poljako and Cousinia resinosa Juz. at varying elevations in arid areas of the southwestern regions of Uzbekistan, analyzing the chemical composition and nutritional value contained in the plants and evaluating the yield and quality of milk of goats fed with such plants. The results showed that dry mass yield, chemical composition, amount of substance, and nutritional value of the biomass produced by the plants in the pastures were directly influenced by the type of plants that make up the pasture, the elevation of the pastures, and climate factors (i.e., season). Our analysis also showed that the resiproductivity, chemical composition, and nutritional parameters were the highest in the mountain pastures compared to those in the hill and desert pastures. Goats fed by grazing in the pastures produced a higher yield and quality of milk compared to goats fed with conventional rations. The findings of this study explain the diversity of the productivity, chemical composition, nutritional value, and potential of the biomass produced by plants in pastures with dominant species A. diffusa and C. resinosa in increasing goat milk production in arid regions.

show abstract

“…Geographically, one third of the territory of Uzbekistan consists of mountains (Kudratov et al 2023). Sudden changes in the climate in the mountains, the large-scale impact of stress factors on the diversity of flora (Akramov et al 2023;Alikulov et al 2023;Bazarov et al 2023) and fauna (Nurullayeva et al2023;Narzullayev 2022;Khalimov 2023;Khalimov et al 2023;Narzullayev et al 2023) affected. In addition, there is a high possibility that this condition caused the grain quality indicators to differ among agricultural crops, including wheat varieties, which have been cultivated in the mountain region for a long time.…”

Section: Introductionmentioning

confidence: 99%

Grain quality indicators and their phenotypic variability of ancient varieties of Triticum aestivum in the mountains of Uzbekistan

RUZIYEV,

DJABBAROV,

OLIMJONOVA

et al. 2023

Biodiversitas

View full text Add to dashboard Cite

Abstract. Ruziyev F, Djabbarov I, Olimjonova S, Niyozov U, Urokov S, Ishankulova D, Bakhadirov U. 2023. Grain quality indicators and their phenotypic variability of ancient varieties of Triticum aestivum in the mountains of Uzbekistan. Biodiversitas 24: 5995-6001. Today, creation of varieties of agricultural crops that are resistant to adverse environmental factors and produce stable crops under the influence of stress factors has become one of the most important issues in the world. In the following years, scientific and research work is being carried out on the wide use of the diversity of its genetic resources in the creation of new varieties of wheat (Triticum aestivum L.). In this regard, there are opportunities to use wild, semi-wild and ancient local forms of wheat with high protein and high gluten content to create varieties that meet modern production requirements. Therefore, it is important to evaluate the quality indicators of ancient varieties and the degree of phenotypic variation in the selection of wheat varieties that are resistant to adverse environmental factors, fertile and high-quality. This research work, aimed at researching ancient wheat varieties cultivated by the people living in the mountainous regions of Uzbekistan for many years. According to the research results, the grain quality indicators (grain hardness, diameter of grains, grain quality indicators, rheological properties, etc.) of the ancient wheat varieties distributed in the mountain regions are different. According to the results of the experiment, the grain hardness of the studied ancient wheat varieties is 73-82 µm, grain diameter 2.65-2.71 mm, hectolitre of weight 818.2-838.1±8.7 g/L, vitreousness 62.2-70.3%, gluten content in grain 31.5-34.6%, sedimentation index 64.4-77.2 mL. It was also observed that the phenotypic variability of the quality indicators was different in the wheat varieties that were the object of the study. Differences in the grain quality indicators of ancient wheat varieties are explained by the different effects of climatic parameters, abiotic and biotic factors in the regions where wheat grows. The information presented in the article provides an opportunity to select ancient wheat varieties distributed in the mountainous regions of Uzbekistan as starting sources for the creation of varieties with high nutritional value, resistant to adverse factors.

show abstract

New data on the vertical distribution of nematode communities in mountain ecosystems of Mount Zarafshan, Uzbekistan

Cited by 5 publications

References 16 publications

Morphological and molecular characterization of root-knot nematodes from Uzbekistan

Morphological and molecular characterization of root-knot nematodes from Uzbekistan

The productivity, chemical composition and nutritional value of pastures dominated by Artemisia diffusa and Cousinia resinosa in arid lands of southwestern Uzbekistan

Grain quality indicators and their phenotypic variability of ancient varieties of Triticum aestivum in the mountains of Uzbekistan

Contact Info

Product

Resources

About