Relações fisiológicas em mudas de pata-de-vaca (Bauhinia forficata Link)

Caron, Braulio Otomar; Perrando, Edison Rogério; Schmidt, Denise; Manfron, Paulo Augusto; Behling, Alexandre; Elli, Elvis Felipe; Eloy, Élder

doi:10.1590/s1516-05722014000200005

Cited by 13 publications

(14 citation statements)

References 15 publications

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“…These days were chosen, among others in the mentioned seasons, since they show the celestial vault in conditions of zero cloudiness, allowing this way, to obtain the maximum effects of weather elements on the cultivation environment and, consequently on evaluated traits, in order to achieve the objectives of the work. This same methodology was used by Caron et al (2014) when determining physiological relations in seedlings of Bauhinia forficata (pata de vaca).…”

Section: Methodsmentioning

confidence: 99%

“…Thus, transpiration values lower than plant physiological need cause water deficit, reducing the growth and development of plants (Casaroli et al, 2008). Moreover, Caron et al (2014) report that the intensity of incident photosynthetically active radiation modifies the physiological behavior (transpiration and stomatal resistance), which causes variation on plant metabolic activity.…”

Section: Palavras-chavementioning

confidence: 99%

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Physiological response of cidró to different water replacement levels in two seasons of the year

et al. 2017

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We aimed to determine the response of cidró (Aloysia triphylla) submitted to different water replacement levels in summer and winter, in order to understand and relate the plant physiological performance under adverse weather conditions. The research was developed in a protected environment, in the city of Frederico Westphalen, Rio Grande do Sul State, Brazil. The experimental design was completely randomized, arranged in a 2x4x2 factorial scheme, two seasons of the year (summer and winter), four water availability (50, 75, 100, 125% of ETo) and two faces of leaf (abaxial and adaxial), with four replications. There were evaluated stomatal vapor diffusion resistance (s/cm), transpiration (µg/cm2/s) and leaf temperature (°C), on both faces of the leaf from 10 a.m. to 11 a.m., 1 p.m. to 2 p.m. and 4 p.m. to 5 p.m., 45 days after the beginning of the season. We concluded that the physiological response of cidró plants was influenced by water replacement levels, in a different way according to the seasons of the year. The summer season was responsible for the highest values of incident photosynthetically active radiation, leaf temperature, transpiration and stomatal vapor diffusion resistance. The reduction in water availability promoted the increase in values for stomatal resistance to vapor flow, reducing leaf transpiration rate. The incident photosynthetically active radiation, leaf temperature and transpiration showed highest values on the abaxial face of the studied species.

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Section: Methodsmentioning

confidence: 99%

Section: Palavras-chavementioning

confidence: 99%

Physiological response of cidró to different water replacement levels in two seasons of the year

et al. 2017

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“…De acordo com Caron et al (2014), a temperatura do ar é um dos principais fatores determinantes da fenologia das plantas, por isto ela exerce papel fundamental na distribuição espaço-temporal das espécies. As condições térmicas influenciam sobre os mais diversos processos vitais das plantas, como a germinação, o desenvolvimento fenológico e o crescimento da planta como um todo (Minuzzi & Lopes, 2015).…”

Section: Híbridounclassified

Elementos meteorológicos sobre características morfológicas e produtivas do milho em diferentes épocas de semeadura

Caron¹,

Oliveira²,

Elli³

et al. 2017

Científica

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ResumoO presente trabalho teve por objetivo avaliar a influência dos elementos meteorológicos sobre as características morfológicas e produtivas do milho em diferentes épocas de semeadura. O delineamento experimental utilizado foi o de blocos completos casualizados, em esquema fatorial 2x6, com dois híbridos de milho (Dekalb 240 e Dow AgroSciences 2A106), e seis épocas de semeadura (15-09-2013, 30-09, 15-10, 30-10, 16-11 e 03-12-2013), com três repetições. Avaliaram-se a estatura da planta, o diâmetro de espiga, o comprimento de espiga, o número de fileiras por espiga, o número de grãos por fileira, o diâmetro do sabugo, a massa de mil grãos e a produtividade. Foi realizada a análise de variância e o teste de Tukey para os fatores épocas de semeadura e híbridos. Realizaram-se ainda a correlação de Pearson e o procedimento de seleção de variáveis Stepwise de modelagem de regressão. As características morfológicas e produtivas dos híbridos de milho são influenciadas pelos elementos meteorológicos nas diferentes épocas de semeadura. De maneira geral, tanto o híbrido D240 como o 2A106 apresentam melhores resultados em relação às variáveis analisadas, nas semeaduras realizadas em 15-09 e 30-09. Semeaduras tardias (16-11 e 03-12) afetam negativamente o desempenho dos caracteres produtivos e morfológicos dos híbridos. Entre os elementos meteorológicos estudados, a temperatura mínima apresenta a maior contribuição para os valores de produtividade. Palavras-chave adicionais: delineamento experimental; variáveis meteorológicas; Zea mays. AbstractThis study aimed to evaluate the influence of meteorological parameters on morphological and productive characteristics of corn in different sowing dates. The experimental design was a randomized complete block in a factorial 2x6, with two corn hybrids (Dekalb 240 and Dow AgroSciences 2A106), and six sowing dates (09/15/2013, 30/09, 15/10, 30/10, 16/11 e 03/12, 2013), with three replications. We evaluated the plant height, ear diameter, ear length, number of row per ear, number of kernels per row, diameter of the cob, thousand grain weight and productivity. It performed the analysis of variance and the Tukey test for the factors sowing dates and hybrids. Was held still the Pearson correlation and the stepwise variable selection procedure of regression modeling. Morphological and productive characteristics of corn hybrids are influenced by meteorological elements in different sowing dates. Overall, both the hybrid D240 as 2A106 show better results versus the variables in spreading performed in 15/09 and 30/09. Late sowing (16/11 and 03/12) adversely affect the performance of the productive and morphological characters of hybrids. Among the weather elements studied, the minimum temperature has the highest contribution to the productivity values.

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“…In addition, temperature increase may have contributed to increase the photosynthetic rate and cellular respiration, with positive impact on plant growth by modifying the leaf area index, influencing in dry matter accumulation and plant height. According to Caron et al (2014), air temperature is an environmental factor of fundamental importance, as its variation may significantly change plant physiology, compromising its metabolic rate and growth.…”

Section: Figure 2 -Interactions Between Soybean Cultivars and Sowing mentioning

confidence: 99%

Soybean morphological and productive characteristics influenced by meteorological parameters and sowing dates

Schwerz¹,

Caron²,

Elli³

et al. 2016

Científica

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The aim of this study was to evaluate the influence of meteorological elements on soybean morphological and productive characteristics in five sowing dates. The randomized block design was used in a 5x5 factorial, with the following five sowing dates during the year 2013: the first (10-15), second (10-30), third (11-15), fourth (30-11) and fifth (12)(13)(14)(15) 2013), and the following five soybean cultivars: BMX Alvo RR, BMX Veloz RR, CCGL Tec 5721 IPRO, BMX Tornado RR and CCGL Tec 7849 IPRO, with three repetitions. Total dry biomass, leaf area index, plant height, number of pods per plant, number of grains per plant, 1000-grain weight and yield were assessed. According to analysis of variance, significant difference was found for all variables in the cultivar x sowing date interaction. Soybean cultivars morphological and productive characteristics were influenced by meteorological elements and sowing dates. Leaf area index and total dry biomass had the highest means in 11-15 and 11-30, coinciding with the highest grain yield means, obtained for Veloz and Tornado cultivars, respectively. These results were obtained because these sowing dates had the best conditions, with air temperatures between 13.4 and 34.2 °C, accumulated solar radiation of 3074.009 MJ m -2 , accumulated thermal time of 1959.15 °C days and total rainfall of 732.8 mm.Additional keywords: Glycine max L.; leaf area index; solar radiation; thermal time; yield. ResumoO objetivo deste trabalho foi avaliar a influência dos elementos meteorológicos sobre as características morfológicas e produtivas da soja em cinco épocas de semeadura. O delineamento utilizado foi o de blocos ao acaso, em esquema fatorial 5x5, com cinco épocas de semeadura: primeira (15-10), segunda (30-10), terceira (15-11), quarta (30-11) e quinta (15-12 de 2013) e cinco cultivares de soja: BMX Alvo RR, BMX Veloz RR, CCGL Tec 5721 IPRO, BMX Tornado RR e CCGL Tec 7849 IPRO, com três repetições. Avaliaram-se a biomassa seca total, o índice de área foliar, a altura de plantas, o número de vagens por planta, o número de grãos por planta, a massa de mil grãos e a produtividade. De acordo com a análise de variância, constatou-se diferença significativa para todas as variáveis analisadas na interação cultivar x época de semeadura. As características morfológicas e produtivas das cultivares de soja são influenciadas pelos elementos meteorológicos e pela época de semeadura. O índice de área foliar e a biomassa seca total apresentam as maiores médias na época de semeadura do dia 15-11 e 30-11, coincidindo com as maiores médias de produtividade de grãos obtidas para as cultivares Veloz e Tornado, respectivamente. Tais resultados foram obtidos devido a esta época de semeadura apresentar as melhores condições, sendo a temperatura do ar entre 13,4 e 34,2°C, a radiação solar incidente acumulada de 3.074,009 MJ m -2 , a soma térmica acumulada de 1.959,15 °C dias e precipitação pluviométrica total de 732,8 mm.Palavras-chave adicionais: Glycine max L.; índice de área foliar; produtividade;...

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Relações fisiológicas em mudas de pata-de-vaca (Bauhinia forficata Link)

Cited by 13 publications

References 15 publications

Physiological response of cidró to different water replacement levels in two seasons of the year

Physiological response of cidró to different water replacement levels in two seasons of the year

Elementos meteorológicos sobre características morfológicas e produtivas do milho em diferentes épocas de semeadura

Soybean morphological and productive characteristics influenced by meteorological parameters and sowing dates

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