A framework for the study of the growth and development of castor plant

Severino, L. S.; Auld, D. L.

doi:10.1016/j.indcrop.2013.01.006

Cited by 57 publications

(39 citation statements)

References 88 publications

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“…Ceres, Viçosa, v. 64, n.4, p. 399-412, jul/ago, 2017 organ sink, which is the main factor in the senescence of the primary leaves, since both occur simultaneously. According to Severino & Auld (2013), the plant regulates the leaf longevity based on evolutionary responses and a long leaf life span would only be advantageous if it could maintain high photosynthetic capacity. Limiting light is one of the factors that influence senescence (Lim et al, 2007).…”

Section: Resultsmentioning

confidence: 99%

Growth performance of castor bean hybrids under different plant densities

et al. 2017

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RESUMOCastor bean grown at high plant densities can increase yield due to increased light interception and reduction in sink demand. The objective of this study was to evaluate the effect of plant density on growth of castor bean hybrids. The experiment was conducted in Botucatu, SP, Brazil, in a split plot randomized block design, with four replications, in 2011 and 2012. The main plot consisted of the sampling times and the subplots consisted of a 3x3 factorial, with the 3 genotypes in the first factor and the 3 plant densities in the second factor. The variables analyzed were: dry mass of leaves, stems, racemes, and total dry matter, which were measured at 30, 60, 90, 120 and 150 days after emergence (DAE). Data were examined for significant differences using analysis of variance followed by the F test (p < 0.05). When interaction was found between the factors and sampling the means were analyzed by regression analysis (p < 0.05). Growth performance was higher in 2012 because of the greater water availability. In 2011, under lower rainfall, there was less branching resulting in cycle end, with total leaf loss. High plant densities partially suppress the development of higher-order structures, especially when associated with water restriction. Crescimento de híbridos de mamona sob densidades populacionais adensadasO cultivo de mamona sob altas densidades populacionais pode aumentar a produtividade devido à maior interceptação de luz e à redução dos drenos vegetativos. O objetivo desta pesquisa foi avaliar o efeito da densidade populacional de híbridos de mamona sobre o crescimento das plantas. O experimento foi conduzido em Botucatu, SP, em 2011 e 2012. O delineamento experimental utilizado foi de blocos ao acaso organizado em parcelas subdivididas com quatro repetições. As parcelas foram constituidas pelas coletas e as subparcelas foram constituídas por um fatorial 3x3. O primeiro fator foi composto por três genótipos e o segundo fator por três densidades populacionais. As variáveis analisadas foram matéria seca de folhas, caules, racemos e matéria seca total, realizadas ao 30, 60, 90, 120 e 150 dias após a emergência (DAE). Os dados foram submetidos à análise de variância pelo teste F (p < 0,05). Quando houve interação entre os fatores e coleta as médias foram analisadas por regressão (p < 0,05). O crescimento foi maior no ano de 2012 devido à maior disponibilidade hídrica. Em 2011, sob menor pluviosidade, houve menor ramificação resultando em fechamento do ciclo, com perda total das folhas nos híbridos. Altas densidades populacionais suprimem parcialmente o desenvolvimento de estruturas de ordem superiores, principalmente quando associadas à restrições hídricas.Palavras-chave: colheita mecânica; Ricinus communis L.; arranjo espacial.

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Section: Resultsmentioning

confidence: 99%

Growth performance of castor bean hybrids under different plant densities

et al. 2017

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“…The castor seeds mature sequentially within and between the racemes, leading to a variation in maturity stages at harvest [3]. Furthermore, seeds from different racemes are reported to vary in seed vigour and weight [4].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, seeds from different racemes are reported to vary in seed vigour and weight [4]. Thus, the final castor lot consists of seeds of different size, weight and physiological maturity and consequently seeds of differing quality [3,5]. The variation in the seed lot relates to the germination ability required for initial plant establishment.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of Castor (Ricinus communis L.) Seed Quality Using Fourier Transform Near-Infrared Spectroscopy in Combination with Multivariate Data Analysis

et al. 2018

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Abstract:The potential of single-seed near-infrared (NIR) spectroscopy was investigated to characterise castor seeds based on their seed viability and seed oil content. Distinct differences between viable and non-viable seeds were observed in the principal component analysis (PCA) analysis. Furthermore, the PCA compared heavy and medium seeds with light seeds, which were comparable to the clusters of viable and non-viable seeds, respectively. Prediction accuracies of 98.7% and 99.6% were obtained with the partial least squares discriminant analysis (PLS-DA) model with a classification error rate of 0.8% and 1.1% for the training set and test set, respectively. The NIR spectral regions having chemical information from the oil in castor seeds were found to be vital for determination of seed viability.

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“…It has specific oil properties that is particularly suited for industurial applications; therefore, the economic growth potential of this crop is immense. In fact, global consumption is driven by industrial and biofuel demands, but insufficient and unreliable feedstock are limiting global consumption (Severino et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Salinity is also a source of environmental stress in the early stages of growth of castor bean plants such as germination and seedling establishment (Severino et al, 2013). The inhibition of germination can be expected as salt stress impairs water absorption and promotes excessive ion entry into the cells.…”

Section: Introductionmentioning

confidence: 99%

Inducing salt tolerance in castor bean through seed priming

Lopes¹,

Prisco²,

Gomes-Filho³

2018

Aust J Crop Sci

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Castor bean (Ricinus communis L.) cultivation requires production techniques appropriate for its growth conditions. Thus, the characterization of the deleterious effects of salinity on seed germination and on seedling establishment and the evaluation of the use of priming techniques on seeds could reduce replanting costs and improve emergence uniformity, preparing plant responses to salt stress. The goals of this current research were to characterize the deleterious effects of salinity on seed germination and on seedling establishment and to evaluate the use of the seed priming techniques as a tool to minimize these deleterious effect. In this research, castor bean seeds, cv. BRS-Energia was used to characterize effects of salt stress on germination and seedling establishment. Then, some chemicals such as PEG-6000 and H 2 O 2 were evaluated to find the beneficial priming techniques for castor bean seeds against salt stress. Our results indicate that water imbibition by the seed under salinity conditions decelerated the time of exposure to salinity. Salinity also affected the germination of castor bean seeds under an Ψs of -0.4 MPa and seedling growth was already affected under an Ψs of -0.16 MPa. Priming with CaCl 2 , NaNO 2 , NaNO 3 and PEG-6000 showed promising results under an Ψs of 0.0 MPa, but priming with NaNO 3 and PEG-6000 were ones that contributed most to better germination and establishment of seedlings under saline conditions. However, NaNO 3 is the most recommended priming agent for castor bean because accelerated seed germination, reducing the time to emergence and planting risks.

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A framework for the study of the growth and development of castor plant

Cited by 57 publications

References 88 publications

Growth performance of castor bean hybrids under different plant densities

Growth performance of castor bean hybrids under different plant densities

Characterisation of Castor (Ricinus communis L.) Seed Quality Using Fourier Transform Near-Infrared Spectroscopy in Combination with Multivariate Data Analysis

Inducing salt tolerance in castor bean through seed priming

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