Effect of temperature and photoperiod on efficiency of assimilated CO2 conversion into the biomass of Cucumis sativus

Talanov, A. V.; Попов, Э. Г.; Kurets, V. K.; Drozdov, S. N.

doi:10.1007/s11183-005-0026-5

Cited by 1 publication

(2 citation statements)

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“…Also there are few studies describing effect of solar conditions on growth, development and yield of cucumber (Liebig, 1985;Liebig and Krug, 1991;Kharkina et al, 2003;Ibarra-Jiménez et al, 2008;Kalbarczyk, 2009), but there are a lot more studies devoted to optimization of cultivation and cropping physiology of the characterized plant (Peil and López-Gálvez, 2002;Talanov et al, 2005;Piszczek and Glowacka, 2008). Cucumber ontogenesis, from seed germination to final stages of ageing and their death, is controlled by light.…”

Section: Discussionmentioning

confidence: 99%

“…It results from the scientific reports by Talanov et al (2005) who examined effect of high and low temperature of a habitat (35 and 15ºC) and day duration (8, 12 and 16 h) on changes of efficiency rate of CO 2 assimilation by cucumber plants that low temperature and a short day increased the value of this rate and simultaneously decreased the weight of biomass of the described plant. On the other hand, Kharkina et al (2003) investigated influence of habitat temperature with illumination of intensity of 100 W m -2 and a 12-hour day on parameters describing the dynamics of sprout growth and rooting of cucumber plants.…”

Section: Discussionmentioning

confidence: 99%

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Risk of field cultivation of pickling cucumber caused by unfavorable sunshine duration conditions

Kalbarczyk

2011

Sci. agric. (Piracicaba, Braz.)

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Solar energy, accessible to plants during sunshine from the sunrise to the sunset is of key importance in productivity of agrocenoses. The aim of the work was to determine risk of pickling cucumber cultivation caused by an unfavorable course of sunshine duration in Poland on the basis of a 40-year research period . The research into the subject was undertaken due to frequent occurrence of sunshine deficiency in Poland and its high temporal and spatial variability. Effect of solar conditions described by sunshine duration in the five development stages on the quantity of the total and marketable yield of cucumber with consideration of a linear trend of an independent variable was determined by means of multiple regression analysis. The accuracy of the equations was evaluated on the basis of, among other things, determination coefficient, average relative forecast error and the indexes: mean bias error (MBE), mean absolute bias error (MABE) and root mean square error (RMSE). Cucumber (Cucumis sativus L.) yield was confirmed for the period from the end of emergence to the beginning of flowering and from the beginning of harvesting to the end of harvesting. Cucumber yield was lower by 18% than the multiannual average in the years 1966-2005 every 1.5-2 years -in the case of the occurrence of the shortage in the period from the end of emergence to the beginning of flowering and by 12-15% every 2-3 years in the period from the beginning of harvesting to the end of harvesting. In four years, out of the 40 considered ones, simultaneously in both cucumber development stages, unfavorable solar conditions occurred, causing reduction by at least 5% in the total yield of the plant in Poland, and in three years -the marketable yield. Key words: development, growth, reduction in yield, solar conditions Risco do cultivo de campo de pepino decapado causado por condições desfavoráveis de duração de brilho solar RESUMO: A disponibilidade de energia solar para as plantas desde o nascer ao por do sol é de fundamental importância para todo agronegócio. O objetivo deste trabalho foi determinar o risco da produção de pepino (Cucumis sativus L.) decapado causado pelo curso desfavorável de duração da radiação solar na Polônia, baseado em um período de 40 anos de pesquisa . A pesquisa foi realizada pelo fato da ocorrência frequente de deficiência de insolação na Polônia e sua alta variabilidade temporal e espacial. O efeito das condições solares descritas pela duração da insolação foi estudado em relação às produtividades total e comerciável de pepino, considerando uma tendência linear de uma variável independente. A precisão das equações foi avaliada com base no coeficiente de determinação, erro médio relativo de precisão e índices: erro médio de bias, erro médio absoluto de bias e raiz do erro médio quadrado. A produtividade foi analisada a partir da emergência até o início do florescimento e do inicio ao fim da colheita. A produtividade de pepino foi 18% menor em relação a media multianual dos anos 1966-2005 cada 1,5-2 anos -n...

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