Apical bud removal increased seed yield in hemp (Cannabis sativa L.)     

Darja Kocjan Ačko  Marko Flajšman 《Acta Agriculturae Scandinavica, Section B - Plant Soil Science》2019,69(4):317-323

In plants, apical dominance prevents the development of lateral shoots. It can be overwhelmed by apical bud defoliation, allowing numerous lateral buds to develop into more lateral branches carrying more fruits and possibly increasing seed yield. This study tested this hypothesis on five hemp (Cannabis sativa L.) cultivars in a 2-year field experiment. In comparison to the intact ones, the defoliated plants developed several lateral shoots. The hemp seed yield was significantly influenced by the year of production, the apical bud removal, and the cultivar. The average two-year seed yield of the defoliated plants (715?±?47?kg/ha) was significantly higher than the yield of the intact plants (568?±?35?kg/ha). Absolutely the greatest effect of apical bud removal on the seed yield was observed for the cultivar ‘Novosadska konoplja’, where increase was 225?kg/ha (25%); a slightly smaller difference occurred for the cultivar ‘Uniko-B’ (183?kg; 30%), followed by ‘Juso-11’ (140?kg/ha; 27%) and ‘Bialobrzeskie’ (128?kg/ha; 29). Cultivar ‘Beniko’ presented the smallest difference with apical bud removal – 58?kg/ha (15%) yield increase We maintain that hemp producers can achieve a larger seed yield not only by selecting an appropriate cultivar and row distance but also by removing apical buds.  相似文献   

Economic and policy considerations regarding hydropower and migratory fish          下载免费PDF全文

Emmi Nieminen  Kari Hyytiäinen  Marko Lindroos 《Fish and Fisheries》2017,18(1):54-78

Environmental standards have rarely been applied for promoting the joint production of hydropower and migratory fish. The objective of this study was to review existing research results on the effectiveness and costs of alternative measures improving fish migration, which are necessary for the development of environmental standards. The ranking of alternative measures indicates that cost‐effective combinations of measures are case‐specific and highly dependent on measure design, implementation and maintenance. In addition to tailored ex ante cost‐effectiveness analyses, other preconditions for cost savings include effective and affordable monitoring and enforcement, and cooperation among power companies that share water‐use rights within a river basin as well as among other stakeholders, such as the local community, fishermen and recreational users.  相似文献   

Social structure and spatial distribution of bottlenose dolphins (Tursiops truncatus) along the Croatian Adriatic coast     

Grgur Plesli&#x;  Nikolina Rako‐Gospi&#x;  Jure Mio i&#x;‐Sto&#x;i&#x;  Tihana Blazini&#x; Vu ur  Marko Radulovi&#x;  Peter Mackelworth  Ma&#x;a Frleta‐Vali&#x;  Dra&#x;ko Holcer 《水产资源保护:海洋与淡水生态系统》2019,29(12):2116-2132

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LAMARRE APPOINTED AS FIRST CANADA RESEARCH CHAIR AT OVC          下载免费PDF全文

Natasha Marko 《The Canadian veterinary journal. La revue veterinaire canadienne》2002,43(3):178

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Impact of quercetin and EGCG on key elements of the Wnt pathway in human colon carcinoma cells     

Pahlke G  Ngiewih Y  Kern M  Jakobs S  Marko D  Eisenbrand G 《Journal of agricultural and food chemistry》2006,54(19):7075-7082

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Antimicrobial activity of Bryum argenteum     

Sabovljevic A  Sokovic M  Sabovljevic M  Grubisic D 《Fitoterapia》2006,77(2):144-145

The antimicrobial activity of Bryum argenteum ethanol extracts was evaluated by microdilution method against four bacterial (Escherichia coli, Bacillus subtilis, Micrococcus luteus and Staphilococcus aureus) and four fungal species (Aspergillus niger, Penicillium ochrochloron, Candida albicans and Trichophyton mentagrophyes). All the investigated ethanol extracts have been proved to be active against all bacteria and fungi tested.  相似文献   

Modulation of key elements of the Wnt pathway by apple polyphenols     

Kern M  Pahlke G  Ngiewih Y  Marko D 《Journal of agricultural and food chemistry》2006,54(19):7041-7046

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Copper-Catalyzed Oxidation of Alcohols to Aldehydes and Ketones: An Efficient, Aerobic Alternative   总被引：1，自引：0，他引：1  

IE Marko  PR Giles  M Tsukazaki  SM Brown  CJ Urch 《Science (New York, N.Y.)》1996,274(5295):2044-2046

An efficient, copper-based catalyst has been discovered that oxidizes a wide range of alcohols into aldehydes and ketones under mild conditions. This catalytic system utilizes oxygen or air as the ultimate, stoichiometric oxidant, producing water as the only by-product.  相似文献   

Growth regulation of human melanocytes: mitogenic factors in extracts of melanoma, astrocytoma, and fibroblast cell lines   总被引：5，自引：0，他引：5  

M Eisinger  O Marko  S Ogata  L J Old 《Science (New York, N.Y.)》1985,229(4717):984-986

Melanocytes derived from fetal or adult skin do not propagate in vitro unless cultured in the presence of factors such as 12-O-tetradecanoylphorbol 13-acetate (TPA). In a search for physiological factors regulating the growth of melanocytes, extracts of various cultured cell types were tested. Factors produced by melanoma and astrocytoma cell lines support continued proliferation of melanocytes in the absence of TPA. WI-38, a fibroblast cell line derived from human embryonic lung, was the most active source of melanocyte growth factors. No melanocyte growth-promoting activity was found in extracts of cultured neuroblastoma, renal cancer, normal keratinocytes, or renal epithelium. Nerve growth factor, epidermal growth factor, melanocyte-stimulating hormone, transforming growth factor-beta, and platelet-derived growth factor did not have growth-promoting activity for melanocytes. The presence of melanocyte growth factors and TPA together resulted in the strongest mitogenic activity for melanocytes, permitting the recovery (at 20 days) of 4 to 20 times as many cells as in growth factor or TPA alone.  相似文献   

Morphological and physiological evaluation of common carp (Cyprinus carpio L., 1758) fed extruded compound feeds containing different fat levels     

Vesna Poleksić  Marko Stanković  Zoran Marković  Renata Relić  Nada Lakić  Zorka Dulić  Božidar Rašković 《Aquaculture International》2014,22(1):289-298

The study was carried out to examine morphological and physiological effects of different levels of fat in compound extruded feed for carp. A 90 days experiment was performed in tanks with water flow 0.34 L min^?1, stocked each with 29 specimens of carp, average weight 15.4 ± 4.2 g. The fish was fed 3 diets containing 38 % protein and 8, 12 or 16 % of fat (feed L8, L12, and L16, respectively). Body weight gain, specific growth rate, food conversion ratio, feed efficiency ratio, condition factor, liver and intestine histology and morphometry and some blood biochemical parameters were analysed. At the end of the experiment, a difference was established between the fish fed L8 feed compared to carp fed L12 and L16 feed for all growth parameters. For several other parameters, nuclear area of hepatocytes, nuclear/cytoplasm ratio, enterocytes height and intestinal folds’ length, a difference between carp fed feed L8 compared to feed L16 was found. The histological analysis revealed that normal structure of the liver and intestine prevailed, but changes were observed regardless of the diet type. In the hepatopancreas, more prominent changes were found around pancreatic tissue—particularly, increased number and size of adipocytes. Although blood biochemical parameters were within normal values, a difference between L8 and L16 diet-fed carp was found for plasma levels of triglycerides and total proteins. According to the results obtained in this study, the best results were achieved using a feed with 8 % fat.  相似文献