Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.最新文献_第9页

Evaluation of Ribes Rubrum Cultivars in Estonia 爱沙尼亚红莓品种评价

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. Pub Date : 2022-08-01 DOI: 10.2478/prolas-2022-0069

Toivo Sepp, R. Rätsep, A. Libek, A. Kikas

{"title":"Evaluation of Ribes Rubrum Cultivars in Estonia","authors":"Toivo Sepp, R. Rätsep, A. Libek, A. Kikas","doi":"10.2478/prolas-2022-0069","DOIUrl":"https://doi.org/10.2478/prolas-2022-0069","url":null,"abstract":"Abstract The evaluation of cultivars of red and white currant (Ribes rubrum L.) was carried out in 2019–2020 at the Polli Horticultural Research Centre of the Estonian University of Life Sciences, South-Estonia. The aim of this study was to estimate traits of red and white currant cultivars of both Estonian and introduced origin. An evaluation plot was established in the autumn of 2016. During two consecutive years (2019–2020), 11 promising cultivars were evaluated for the beginning of flowering and fruit ripening, winter hardiness, resistance to diseases (expressed in scores 1–9), yield per bush, fruit weight, drop of flowers and premature berries, as well as the content of the soluble solids (°Brix), titratable acids, ascorbic acid, total phenols and total anthocyanins. The highest yield was determined in cultivars ‘Bayana’ and ‘Viksnes’, while cvs. ‘Rovada’, ‘Jonkheer van Tets’, ‘Kurvitsa 4’ and ‘Valko’ had larger berries. The highest soluble solid content was found in the berries of red currant ’Krameri punane’ (13.8 °Brix) and white currant ’Bayana’ (12.4 °Brix).","PeriodicalId":20651,"journal":{"name":"Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.","volume":"17 1","pages":"448 - 454"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87677825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genetic Diversity and Relatedness of Latvian Pyrus Germplasm assessed by a Set of SSR Markers 用SSR标记评价拉脱维亚梨种质资源的遗传多样性和亲缘性

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. Pub Date : 2022-08-01 DOI: 10.2478/prolas-2022-0068

G. Lācis, Irita Kota-Dombrovska, K. Kārkliņa, B. Lāce

{"title":"Genetic Diversity and Relatedness of Latvian Pyrus Germplasm assessed by a Set of SSR Markers","authors":"G. Lācis, Irita Kota-Dombrovska, K. Kārkliņa, B. Lāce","doi":"10.2478/prolas-2022-0068","DOIUrl":"https://doi.org/10.2478/prolas-2022-0068","url":null,"abstract":"Abstract Pears (Pyrus communis L.) are not native plant species in Latvia but have a long history of introduction and growing, using various sources of plant material over time. Therefore, the existing collection of genetic resources combines accessions of different origin. To plan the further development of this crop and to ensure its successful preservation, this study aimed to characterise the Latvian Pyrus germplasm collection using SSR molecular markers and to estimate the level of genetic diversity within the pear germplasm collection. Six SSR markers were used to genotype 206 pear accessions of different origin, such as cultivars and hybrids bred in Latvia, landraces collected during expeditions throughout the country, and introduced foreign cultivars. The marker set identified 197 accessions with unique genotypes, and enabled a comparison of different origin groups, and an assessment of genetic diversity. Allele numbers ranged from 15 to 28 for the markers used, whereas observed heterozygosity ranged from 0.519 to 0.956. Grouping of accessions according to geographical origin was not observed. However, the genetic background of Latvian samples was entirely in alignment with international germplasm.","PeriodicalId":20651,"journal":{"name":"Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.","volume":"20 1","pages":"438 - 447"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86251981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Sea Buckthorn Diseases Caused by Pathogenic Fungi 病原菌引起的沙棘疾病

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. Pub Date : 2022-08-01 DOI: 10.2478/prolas-2022-0062

K. Drevinska, I. Moročko‐Bičevska

{"title":"Sea Buckthorn Diseases Caused by Pathogenic Fungi","authors":"K. Drevinska, I. Moročko‐Bičevska","doi":"10.2478/prolas-2022-0062","DOIUrl":"https://doi.org/10.2478/prolas-2022-0062","url":null,"abstract":"Abstract Sea buckthorn (Hippophae rhamnoides L.) is a native species in various regions of Asia and Europe. It is cultivated as a multipurpose horticultural species in northern temperate regions of Europe, Asia, and North America with large economic potential used for food, pharmacology, cosmetics, and environmental conservation. Diseases in natural populations and managed landscapes have increased, endangering sea buckthorn growth and cultivation worldwide. This review article focuses on sea buckthorn canker, wilt and decline diseases caused by pathogenic fungi, their distribution, hosts of involved pathogenic fungi and symptoms. Published information on sea buckthorn fungal diseases is available only about a few diseases, such as wilt (Verticillium dahliae), the dried-shrink disease caused by various fungi and abiotic factors, and stem canker (Hymenopleella hippophaeicola, Cytospora spp., Stigmina sp.). Some fungi reported on sea buckthorn are poorly studied, or the sea buckthorn is a newly discovered host, as in the case of Eutypa spp. The most often reported symptoms of these diseases are cankers and cracks on trunks and main branches, dead buds and leaves, necrosis of various tissues on branches, and root necrosis, resulting in the death of the shrubs. In general, the fungal diseases on sea buckthorn are not sufficiently addressed, and more research is needed.","PeriodicalId":20651,"journal":{"name":"Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.","volume":"110 1","pages":"393 - 401"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77097138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Preliminary Assessment of the Relationship between Pigments in Olive Leaves and Vegetation Indices 橄榄树叶片色素与植被指数关系的初步评价

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. Pub Date : 2022-08-01 DOI: 10.2478/prolas-2022-0080

P. Marques, R. Carvalho, A. Fernandes-Silva

{"title":"Preliminary Assessment of the Relationship between Pigments in Olive Leaves and Vegetation Indices","authors":"P. Marques, R. Carvalho, A. Fernandes-Silva","doi":"10.2478/prolas-2022-0080","DOIUrl":"https://doi.org/10.2478/prolas-2022-0080","url":null,"abstract":"Abstract Content of leaf pigments such as chlorophyll a and b, chlorophyll a+b and carotenoids can provide valuable insight into the physiological performance of plants. These compounds have selective proprieties for light absorption and reflectance in the visible spectra that can be used to evaluate alternative methods to biochemical to estimate their content. Numerous studies in the literature have established correlations between these compounds, spectral reflectance and vegetation indices. Nevertheless, the appropriate use of these indices depends on plant species and cultivars. Thus, the objective of this study was to assess the most common vegetation indices for the estimation of chlorophyll a and b, chlorophyll a+b and carotenoids of three olive tree cultivars (Olea europaea L, cv. Cobrançosa, cv. Verdeal Transmontana and cv. Madural) under six irrigation treatments, using spectroscopy. The results showed that the correlation between leaf pigments and vegetation indices depends not only on the type of pigment but also on the cultivar. Among the studied cultivars, cv. Cobrançosa showed the best correlation between the “M Locherer chlorophyll” index (MLO) and chlorophyll a content (r2 = 0.66) and for the carotenoid reflectance index (CRI) 2 and carotenoids content (r2 = 0.87). Although the results are preliminary, it seems that vegetation indices could be a useful tool for leaf pigment evaluation, and to give information about plant interactions with biotic and abiotic environmental stress conditions.","PeriodicalId":20651,"journal":{"name":"Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.","volume":"120 1","pages":"517 - 525"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79427363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Evaluation of the Phenolic Profile of Bear’s Garlic (Allium Ursinum L.) Leaves 熊蒜(Allium Ursinum L.)酚类成分的评价叶子

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. Pub Date : 2022-08-01 DOI: 10.2478/prolas-2022-0079

I. Cinkmanis, I. Augšpole, I. Sivicka, S. Vucāne

{"title":"Evaluation of the Phenolic Profile of Bear’s Garlic (Allium Ursinum L.) Leaves","authors":"I. Cinkmanis, I. Augšpole, I. Sivicka, S. Vucāne","doi":"10.2478/prolas-2022-0079","DOIUrl":"https://doi.org/10.2478/prolas-2022-0079","url":null,"abstract":"Abstract European wild garlic (Allium ursinum L.) syn. wood garlic, ramsons or bear’s garlic is a perennial plant that is common in Europe and Asia, but rare in the Mediterranean region. Bear’s garlic is included in the Latvian Red Data Book. The plant species has high commercial value and a high amount of biologically active compounds. Because of the conservation status of wild populations, raw material should be obtained by cultivation. For the experiment, leaves of six accessions of bear’s garlic from the ex situ collection of medicinal and aromatic plants at the Latvia University of Life Sciences and Technologies, were used. The aim of this study was to identify the individual phenolic compounds in bear‘s garlic leaves. The composition of the phenolic profile was determined using a high-performance liquid chromatograph (HPLC) Shimadzu Nexera LC-40 with diode-array detector (DAD). Overall, 18 phenolic compounds (gallic acid, 3.5-diOHbenzoic acid, catechin, chlorogenic acid, 4-hydroxybenzoic acid, epicatechin, homovanillic acid, caffeic acid, vanillic acid, syringic acid, vanillin, p-coumaric acid, rutin, sinapic acid, ferulic acid, 2-OHcinnamic acid, quercetin, luteolin, and kaempferol) were detected in the samples. The gallic acid was the predominant phenolic compound, with a range in concentration from 75.8 mg·100 g−1 to 322.5 mg·100 g−1 in bear’s garlic.","PeriodicalId":20651,"journal":{"name":"Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.","volume":"50 3 1","pages":"512 - 516"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72838337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Wild Edible Small Fruits in Turkey and their Fruit Characteristics 土耳其野生食用小水果及其果实特性

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. Pub Date : 2022-08-01 DOI: 10.2478/prolas-2022-0065

Ozgecan Yalcin, N. Bassil, N. Kafkas

{"title":"Wild Edible Small Fruits in Turkey and their Fruit Characteristics","authors":"Ozgecan Yalcin, N. Bassil, N. Kafkas","doi":"10.2478/prolas-2022-0065","DOIUrl":"https://doi.org/10.2478/prolas-2022-0065","url":null,"abstract":"Abstract Wild fruits are essential genetic resources for fruit breeding and have either been domesticated or used to introgress disease resistance and tolerance to abiotic and biotic stress. Numerous studies have previously described the health benefits of wild berry fruits and reported their antioxidant, anti-inflammatory, antimicrobial, and anticancer activity. Turkey has a rich plant biodiversity thanks to its geographic location and encirclement by three seas, leading to a wide variety of climates. The great ecological diversity of the wild berry species in Turkey is a significant bio-gene pool that is vital to human life and can serve as a source of agricultural development in the future. This review aims to introduce some of the wild edible berry species naturally occurring in Turkey such as Morus spp., Hippophae rhamnoides L., Viburnum opulus L., Rubus idaeus L., Rubus fruticosus L., Sambucus nigra L., Vaccinium spp., Arbutus unedo L., Ribes spp., and Fragaria vesca L., and describe their distribution, uses, and fruit characteristics. Conservation of these wild fruit genetic resources is necessary for use in breeding for novel traits.","PeriodicalId":20651,"journal":{"name":"Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.","volume":"1 1","pages":"417 - 423"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75511422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Developing New Cultivars of Prunus × Rossica Erem. And Clonal Rootstocks at the Krymsk Experiment Breeding Station 桃李新品种的选育。克里姆斯克试验育种站的无性系砧木

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. Pub Date : 2022-08-01 DOI: 10.2478/prolas-2022-0067

G. Eremin, V. Eremin

{"title":"Developing New Cultivars of Prunus × Rossica Erem. And Clonal Rootstocks at the Krymsk Experiment Breeding Station","authors":"G. Eremin, V. Eremin","doi":"10.2478/prolas-2022-0067","DOIUrl":"https://doi.org/10.2478/prolas-2022-0067","url":null,"abstract":"Abstract The paper considers the possibilities of expanding the assortment of plum cultivars in world production by hybridising large-fruited myrobalan plum (Prunus cerasifera Ehrh.) cultivars with those of Japanese plum (Prunus salicina Lindl.) and other diploid stone fruit species. Because of many years of breeding work in Russia, cultivars of a new hybridogenous species Prunus × rossica Erem. (Russian plum) have been created, which can ensure a stable supply of fresh fruit from late June to September and complement the assortment of common plum cultivars. A description is given for the best adaptive, high-yielding cultivars with good taste and high canning qualities — ‘Kubanskaya Kometa’, ‘Globus’, ‘Gek’, ‘Iyulskaya Roza’, ‘Dynnaya’, ‘Kolonnovidnaya’, and ‘Podarok Sad-Gigantu’. The efficiency of their cultivation using intensive technologies and own-rooted plants, as well as clonal rootstocks bred at the Krymsk Station, has been shown. It is recommended to carry out intensive cultivation of Russian plum using medium vigorous rootstocks like Kuban 86, Evrika 99, Zarevo, Fortuna and dwarf rootstocks VVA 1, Best, Upryamets and VSV 1.","PeriodicalId":20651,"journal":{"name":"Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.","volume":"15 1","pages":"432 - 437"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89140402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The 4th International Conference “Sustainable Horticulture from Plant to Product: Challenges in Temperate Climate”, 25–26 August 2021 第四届“从植物到产品的可持续园艺:温带气候的挑战”国际会议，2021年8月25日至26日

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. Pub Date : 2022-08-01 DOI: 10.2478/prolas-2022-0087

G. Lācis

引用次数: 0

Jānis Priedkalns – Outstanding Latvian Medical Scientist, 1934–2022 Jānis Priedkalns -杰出的拉脱维亚医学科学家，1934-2022

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. Pub Date : 2022-06-01 DOI: 10.2478/prolas-2022-0061

V. Kluša, R. Muceniece

引用次数: 0

Management of Proximal Femoral Fractures 股骨近端骨折的处理

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. Pub Date : 2022-06-01 DOI: 10.2478/prolas-2022-0058

Mihkel Viru, Reile Juhanson, Fred Värsi, Indrek Linde, Karl Kiisk, Alar Rokk, H. Kolk, K. Toompere, Juri Karjagin

{"title":"Management of Proximal Femoral Fractures","authors":"Mihkel Viru, Reile Juhanson, Fred Värsi, Indrek Linde, Karl Kiisk, Alar Rokk, H. Kolk, K. Toompere, Juri Karjagin","doi":"10.2478/prolas-2022-0058","DOIUrl":"https://doi.org/10.2478/prolas-2022-0058","url":null,"abstract":"Abstract Proximal femoral fractures are typical injuries in the elderly population. We conducted a retrospective study to estimate postoperative mortality and risk factors affecting patient outcomes at Tartu University Hospital. We retrospectively evaluated patients who were hospitalised in 2017 with a proximal femoral fracture diagnosis and who were operated (osteosynthesis, partial and total hip replacement). In the study we included 313 patients of 361 (219 women and 94 men). We did not find statistically significant difference between the choice of anaesthesia and mortality or between the time getting to the OR and mortality. Cognitive impairment and postoperative delirium were significantly associated with increased one-year mortality was 37% (p < 0.05). In the group of the patients who did not have postoperative delirium the overall mortality was 15%. 23% of the patients had preoperatively cognitive impairment, and 45.8% of them died in the first year after the operation (p < 0.001). Mortality of patients who did not have cognitive impairment was 14%. As the sample group of patients included in the study was small, further investigation should encompass a larger group in the future.","PeriodicalId":20651,"journal":{"name":"Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.","volume":"137 1","pages":"377 - 381"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79811839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 21