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Made available in DSpace on 2014-06-11T19:32:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2001-11Bitstream added on 2014-06-13T18:43:53Z : No. of bitstreams: 1 canizares_ka_dr_botfca.pdf: 635684 bytes, checksum: 5786be7fb81c9dd91ec94be500df92fd (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Com o objetivo de estudar o efeito de doses de potássio e magnésio sobre o desenvolvimento, produção de frutos, concentração de nutrientes, em diferentes fases fisiológicas do pepino (Cucumis sativus L.) e verificar se o ponto de enxertia fez a função de filtro para esses nutrientes, um experimento foi conduzido em ambiente protegido na Faculdade de Ciências Agronômicas da UNESP-Botucatu. Em plantas de pepino hibrido Hokuho enxertadas em abóbora (Cucurbita sp.) híbrido Excite Ikki, e conduzidas em vasos plásticos de 10 litros de capacidade, foram estudadas quatro doses de potássio (2,3 - 4,6 - 6,9 e 9,2 mmolc.dm-3 ) e quatro de magnésio (4,5 - 9,0 - 13,5 - e 18,0 mmolc.dm-3), mais uma testemunha que correspondeu ao pé-franco com a adubação recomendada (4,6 e 9,0 mmolc.dm-3 de K e Mg). O delineamento experimental foi o de blocos ao acaso, com 17 tratamentos (fatorial 4x4+1) e 4 repetições, 5 plantas/parcela, das quais três foram consideradas úteis. De um modo geral verificou-se que a enxertia e a adubação com os diferentes níveis de potássio e magnésio influenciaram o desenvolvimento da planta, a produção de frutos, o estado nutricional nas diferentes fases fisiológicas e a distribuição dos nutrientes na planta ao final do ciclo. As plantas enxertadas se desenvolveram mais que as não enxertadas, porém, a produção de frutos em kg/m2 não aumentou na mesma proporção. No entanto, sob altas doses de potássio e magnésio, as plantas enxertadas se desenvolveram mais, porém, não aumentaram a produção. As doses de 2,3 mmolc.dm-3 de K e 9,0 mmolc.dm-3 de Mg foram suficientes para atingir a máxima produção. Por outro lado, as menores concentrações... / It was set out an experiment on protected cultivation at FCAUNESP- Botucatu to study magnesium and potassium levels effect on plant development, fruit yield, nutrient concentration, in different physiological stages of cucumber plants (Cucumis sativus L.) and verify if grafting point was a filter to these nutrients. Hokuho hybrid cucumber plants were grafted over Excite Ikki hybrid squash (Cucurbita sp.) and planted in plastic pots (10 L). Four potassium levels (2.3 - 4.6 - 6.9 and 9.2 mmolc.dm-3) and four magnesium levels (4.5 - 9.0 - 13.5 and 18.0 mmolc.dm-3) were studied in grafted plants and recommended level (4.6 and 9.0 mmolc.dm-3 of K and Mg, respectively) in plants without grafting (standard). Five replicates of five plants per plot were used to evaluate 17 treatments (factorial 4x4+1) in a randomized block design. In general, grafting and different K and Mg levels influenced plant development, fruit yield, nutritional state at different stages and plant nutrient distribution at end of cycle. Grafted plants developed more than non grafted ones, but fruit yield (kg/m2) did not increase at the same proportion. however, under high potassium and magnesium levels grafted plants developed more, but yield were not increased. K level of 2.3 mmolc.dm-3 and Mg level of 9,0 mmolc.dm-3 were enough to get maximum yield. On the other hand, lesser P, Mg and S concentration and absortion observed in grafted plants leaves, at end of cycle, could be associated to these nutrients redistribution from leaves to fruits, because grafted plants had higher yield, and grafting point or callus of region grafting did not have filter function to any nutrient.

No description available.

MSc (Horticulture) / Department of Horticultural Sciences / Grafting is the process of combining two parts of plants to form a single plant. Grafting is a common technique in trees and vine crops and is becoming popular in annual vegetable production in order to control biotic and abiotic stresses, improve fruit yield and quality. The objectives of the study were to determine the (a) compatibility of the tomato scion x rootstocks combinations (b) effect of rootstocks on vegetative growth parameters (c) effect of tomato rootstocks on fruit quality and yield of tomato. The experiments were conducted under a protected environment (in a high tunnel) at the University of Venda, Thohoyandou, South Africa. Four tomato rootstocks (‘Powapak’, ‘Everest’, ‘Matterhorn’ and ‘Golf’) and two scion cultivars (‘Money Maker’ and ‘Rodade’) were used to develop 10 scion x rootstock combinations. The tube grafting method was used. Seedlings were transplanted in the polyethylene bags inside the high tunnel. Growth parameters, including plant height, stem diameter, number of leaves per cluster as well as yield attributes were measured. In addition, the chemical fruit quality parameters including the total soluble solids and pH were determined. A randomized complete block design with four replications was used for the study. Quantitative data sets of the variables were subjected to analysis of variance. There was a high plant survival rate and the number of clusters per plant showed marked improvement in some grafting combinations particularly in ‘Rodade x Everest’ and ‘Money Maker x Everest’. A few individual stunted plants were observed in the tunnel. A significant seasonal effect was observed on some of the growth and productivity attributes. The pH showed a narrow range of values and there was significant interaction between sampling time and genotype. The results demonstrated the viability of producing grafted tomatoes under tunnel conditions. / NRF

Call number: LD2668 .T4 1960 P54

Call number: LD2668 .T4 1961 D43

Bakgrund: En kranskärlsoperation är ett behandlingsalternativ till dem som har en kranskärlssjukdom. Den utförs främst vid komplicerade fall och innebär att med nya kärl skapa en förbindelse förbi det förkalkade kranskärlet runt hjärtat. Operationen är stor och påfrestande, och innebär flera förändringar i livet.   Syfte: Syftet med denna litteraturstudie är att belysa patienters erfarenheter av att ha genomgått en kranskärlsoperation.   Metod: En litteraturstudie utfördes genom att granska 10 vetenskapliga kvalitativa studier som stödjer författarnas syfte. Studierna analyserades och sammanställdes till ett resultat.   Resultat: Operationen påverkade deltagarna och deras återhämtning på olika sätt. Besvärliga kroppsliga symtom kunde visa sig under återhämtningen. Många tankar och funderingar väcktes som skapade oro och rädsla. Stöd och information hade en betydande roll och operationen krävde livsstilsförändringar som kunde vara svåra att anpassa sig till.   Konklusion: Brist på information och avsaknad av länk till sjukhuset efter utskrivning, ledde till rädsla och oro vilket skapade en otrygghet. Ytterligare forskning om stöd och information behövs för att kunna hjälpa och tillfredsställa patienters behov.

Call number: LD2668 .T4 1964 R82 / Master of Science

Thesis (MScAgric)--Stellenbosch University, 1954. / No Abstract Available

published_or_final_version / Dentistry / Master / Master of Orthodontics