First report ofRhizoctonia solaniAG 4 HG-II attacking castor bean plants (Ricinus communis) in Brazil and evaluation of two castor bean cultivars for resistance to damping-off

ABSTRACT The objective of this work was to evaluate the effects of different storage conditions on the physiological and sanitary quality and oil content of castor bean (Ricinus communis) seeds. Seeds of castor bean plants of the Guarani, and IAC-80 cultivars were stored in two environments (cold room, and room conditions), using three package types (multifoliate Kraft paper bag, and polyethylene bag, and polyethylene bag with vacuum at 1 atm). In addition, another storage condition was evaluated: cryopreservation (-196 °C) in foil paper bags. Seed quality was evaluated before storage and at 4, 8, and 12 months after storage by testing their 7-day and 14-day germination, emergence, health, water content, and oil content. The experiment was conducted in a completely randomized design, with 7×4 factorial arrangement consisting of seven storage conditions and four evaluation times. Cryopreservation is the ideal condition for maintaining the seed physiological quality of the Ricinus communis cultivars used throughout storage. The oil content of the R. communis seeds decreases, and the incidence of Aspergillus spp. and Fusarium spp. fungi increases throughout storage, regardless of the storage conditions.

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Concentrations of metals and potential metal-binding compounds and speciation of Cd, Zn and Cu in phloem and xylem saps from castor bean plants (Ricinus communis) treated with four levels of cadmium

Physiologia Plantarum ◽

10.1111/ppl.12309 ◽

2014 ◽

Vol 154 (2) ◽

pp. 243-255 ◽

Cited By ~ 27

Author(s):

Kenji Hazama ◽

Shinji Nagata ◽

Tamaki Fujimori ◽

Shuichi Yanagisawa ◽

Tadakatsu Yoneyama

Keyword(s):

Metal Binding ◽

Castor Bean ◽

Ricinus Communis ◽

Bean Plants ◽

Zn And Cu In ◽

Four Levels

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IDENTIFICATION OF Ricinus communis HYBRIDS FOR LOW PLANT HEIGHT1

Revista Caatinga ◽

10.1590/1983-21252021v34n411rc ◽

2021 ◽

Vol 34 (4) ◽

pp. 837-845

Author(s):

FREDSON DOS SANTOS MENEZES ◽

SIMONE ALVES SILVA ◽

GEAN CARLO SOARES CAPINAN ◽

HELISON SANTOS BRASILEIRO ◽

LAURENICE ARAÚJO DOS SANTOS

Keyword(s):

Plant Height ◽

Castor Bean ◽

Ricinus Communis ◽

Block Design ◽

Direct Selection ◽

Randomized Block Design ◽

Ricinus Communis L ◽

Bean Plants ◽

Stem Internode ◽

High Heritability

ABSTRACT Castor bean (Ricinus communis L.) is a plant native to Africa that presents important socioeconomic value for many countries, and has been the subject of breeding programs. In this context, the objective of this work was to identify genotypes with potential for improvement, focused on lowering plant height, using 19 hybrids and eight parents of R. communis. The study was developed at the experimental area of the Federal University of Recôncavo da Bahia in Cruz das Almas, BA, Brazil. The experiment was conducted in 2017 using a randomized block design with three replications, consisting of eight parents and 19 hybrids resulting from hybridization of these parents, grown with spacing of 3 meters between rows and 1 meter between plants. The characters stem diameter (SD), primary raceme insertion height (PRI), number of stem internodes (NSI), mean stem internode length (SIL), plant height (PH), number of harvested racemes (NHR), primary raceme length (PRL), and effective raceme length (ERL) were evaluated by analyzing the genetic parameters of variances and correlation between them. Five (H17, H2, H11, H13, and H6) of the 19 hybrids evaluated have potential to decrease PH of castor bean plants, presenting heights below 1.07 m. Direct selection for plant height is the most indicated for this purpose due to the high heritability of the character. However, the characters SD, PRI, and SIL stood out by assisting in indirect selection to decrease plant height because they can be early measured and present high heritability and strong correlation with PH.

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FATORES ABIÓTICOS E A DISTRIBUIÇÃO DE FOTOASSIMILADOS DA MAMONEIRA EM CONDIÇÕES SEMIÁRIDAS

Irriga ◽

10.15809/irriga.2018v23n1p121 ◽

2018 ◽

Vol 23 (1) ◽

pp. 121-132

Author(s):

Allan Nunes Alves ◽

Hans Raj Gheyi ◽

José Amilton Santos Júnior ◽

Frederico Antônio Loureiro Soares ◽

Claudio Augusto Uyeda ◽

...

Keyword(s):

Castor Bean ◽

Aerial Part ◽

Management Practices ◽

Saline Water ◽

Ricinus Communis ◽

Abiotic Factors ◽

Dry Mass ◽

Terra Preta ◽

Ricinus Communis L ◽

Bean Plants

FATORES ABIÓTICOS E A DISTRIBUIÇÃO DE FOTOASSIMILADOS DA MAMONEIRA EM CONDIÇÕES SEMIÁRIDAS1 ALLAN NUNES ALVES2; HANS RAJ GHEYI3; JOSÉ AMILTON SANTOS JÚNIOR4; FREDERICO ANTÔNIO LOUREIRO SOARES5; CLAUDIO AUGUSTO UYEDA6 E JOSÉ EUSTÁQUIO CAMPOS JÚNIOR4 1Artigo extraído da Tese de Doutorado do primeiro autor, presentada ao programa de Pós-Graduação em Engenharia Agrícola da UFCG 2Universidade Federal de Campina Grande. R. Aprígio Veloso, 882 - Universitário, Campina Grande - PB, 58429-900. [email protected] 3Universidade Federal do Recôncavo da Bahia. Cruz das Almas - BA, 44380-000. [email protected] 4Universidade Federal Rural de Pernambuco. R. Manuel de Medeiros, s/n - Dois Irmãos, Recife - PE, 52171-900 [email protected]; [email protected] 5Instituto Federal Goiano. Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde – GO, 75.901-970 [email protected] 6Instituto Federal de Pernambuco, Vitória de Santo Antão. Propriedade Terra Preta Zona Rural, s/n, Vitória de Santo Antão - PE, 55600-000 [email protected] 1 RESUMO Embora a susceptibilidade a fatores abióticos seja evidente, a análise dos fotoassimilados em plantas sob estresse é relevante para subsidiar práticas de manejo. Nesta direção, buscou-se avaliar a produção da biomassa e analisar a distribuição de fotoassimilados da mamoneira (BRS Energia) irrigada com águas salinas (CEa = 0,6; 1,6; 2,6; 3,6; e 4,6 dS m-1) e adubada com doses de nitrogênio (50; 75; 100, 125 a 150 mg kg-1 de solo). Os fatores testados foram alocados em blocos casualizados, em esquema fatorial 5x5, com três repetições, totalizando 75 unidades experimentais. Os dados obtidos foram submetidos à análise da variância pelo teste ‘F’ e comparados mediante análise de regressão em 0,01 nível de probabilidade. Verificou-se que até CEa = 3,6 dS m-1 houve maior produção de massa seca da parte aérea sob 125 mg de N kg-1 de solo e que nas condições de salinidade impostas às plantas, as folhas foram a maior fonte e o racemo o maior dreno da parte aérea, bem como a alocação de fotoassimilados na raiz foi até 59,75% maior que na parte aérea. Palavras-chave: Ricinus communis L., salinidade, adubação nitrogenada ALVES, A. N.; GHEYI,H. R.; SANTOS JÚNIOR, J. A.; SOARES, F. A. L.; UYEDA, C. A; CAMPOS JÚNIOR, J. E. ABIOTIC FACTORS AND DISTRIBUTION OF PHOTOASSIMILATES IN CASTOR BEAN PLANTS UNDER SEMIARID CONDITIONS 2 ABSTRACT Although the susceptibility to abiotic factors is obvious, the analysis of photoassimilates in plants under stress is relevant to subsidize management practices. In this context, the production of biomass and partition of photoassimilates of castor bean (BRS Energy) irrigated with saline water (ECw = 0.6, 1.6, 2.6, 3.6, and 4.6 dS m -1) and fertilized with nitrogen (50; 75; 100, 125 to 150 mg kg-1 of soil) was evaluated. The factors tested were allocated in randomized blocks in a 5x5 factorial design with three replications, totaling 75 experimental units, and the data were submitted to analysis of variance by the ‘F’ test and compared by regression analysis at 0.01 level of probability. It was verified that up to ECw = 3.6 dS m-1 there was greater dry mass production of shoot under 125 mg of N kg-1 of soil. In the conditions of salinity imposed to the plants, leaves were the greater source and racemus was the greater drainage of the aerial part, as well as the allocation of photoassimilates in the root was up to 59.75% higher than in the aerial part. Keywords: Ricinus communis L., salinity, nitrogen fertilization

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First report of Olive latent virus 2 in wild castor bean (Ricinus communis) in Italy

Plant Pathology ◽

10.1111/j.1365-3059.2007.01722.x ◽

2008 ◽

Vol 57 (2) ◽

pp. 392-392 ◽

Cited By ~ 5

Author(s):

G. Parrella ◽

A. De Stradis ◽

C. Vovlas

Keyword(s):

Castor Bean ◽

Ricinus Communis ◽

Latent Virus ◽

First Report

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The concentration of xylem sap constituents in root exudate, and in sap from intact, transpiring castor bean plants (Ricinus communis L.)

Plant Cell & Environment ◽

10.1111/j.1365-3040.1995.tb00375.x ◽

1995 ◽

Vol 18 (4) ◽

pp. 409-420 ◽

Cited By ~ 87

Author(s):

U. SCHURR ◽

E. -D. SCHULZE

Keyword(s):

Castor Bean ◽

Root Exudate ◽

Ricinus Communis ◽

Xylem Sap ◽

Ricinus Communis L ◽

Bean Plants

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PERCOLADO DE ATERRO SANITÁRIO NO CULTIVO DA MAMONEIRA: ALTERAÇÕES QUÍMICAS EM ARGISSOLO VERMELHO-AMARELO

Irriga ◽

10.15809/irriga.2017v22n4p800-820 ◽

2017 ◽

Vol 22 (4) ◽

pp. 800-820

Author(s):

Jeronimo Andrade Filho ◽

Nildo Da Silva Dias ◽

Rafael De Oliveira Batista ◽

José Amilton Santos Júnior ◽

José Francismar Medeiros ◽

...

Keyword(s):

Castor Bean ◽

Ricinus Communis ◽

Liquid Waste ◽

Exchangeable Sodium ◽

Chemical Changes ◽

Saturation Extract ◽

Ricinus Communis L ◽

Bean Plants ◽

Agricultural Use ◽

E Mail

PERCOLADO DE ATERRO SANITÁRIO NO CULTIVO DA MAMONEIRA: ALTERAÇÕES QUÍMICAS EM ARGISSOLO VERMELHO-AMARELO* JERÔNIMO ANDRADE FILHO1; NILDO DA SILVA DIAS2; RAFAEL OLIVEIRA BATISTA3; JOSÉ FRACISMAR DE MEDEIROS2; JOSÉ AMILTON SANTOS JÚNIOR4; ANA LUÍZA LIMA FERREIRA5 *Artigo extraído da Tese de Doutorado do primeiro autor 1Instituto Federal de Ciência e Tecnologia do Rio Grande do Norte, Rua Raimundo Firmino de Oliveira, 400 - Conj. Ulrick Graff, Mossoró-RN, CEP: 59.628-330, Email:[email protected] 2Departamento de Ciências Agronômicas e Florestais, Universidade Federal Rural do Semiárido, Av. Francisco Mota, 572 - Bairro Costa e Silva, Mossoró-RN, CEP: 59.625-900, Email: [email protected]; [email protected] 3Departamento de Engenharia e Ciências Ambientais, Universidade Federal Rural do Semiárido, Av. Francisco Mota, 572 - Bairro Costa e Silva, Mossoró-RN, E mail: [email protected] 4Departamento de Engenharia Agrícola, Universidade Federal Rural de Pernambuco, R. Manuel de Medeiros, s/n - Dois Irmãos, Recife - PE, CEP: 52171-900, E mail: [email protected] 5Escola Superior de Agricultura Luiz de Queiroz, Av. Pádua Dias, 11 - Cx. Postal 9 - Piracicaba – SP, CEP: 13418-900 E mail: [email protected] 1 RESUMO O aproveitamento agrícola do percolado de aterro sanitário pode mitigar certos impactos ambientais, sobretudo quando eventuais alterações químicas no solo são monitoradas. Dito isto, em Mossoró-RN (5º11’31’’S, 37º20’40’’O), entre setembro de 2014 e janeiro de 2015, desenvolveu-se esta pesquisa, com o objetivo de quantificar alterações nas características químicas de um Argissolo vermelho-amarelo Eutrófico cultivado com plantas de mamona (Ricinus communis L.) que receberam aplicação de percolado de aterro sanitário. O experimento foi conduzido em blocos casualizados com cinco tratamentos e quatro repetições; do total da demanda hídrica da cultura, aplicou-se inicialmente percentuais (0; 20; 40; 60 e 80%) de percolado de aterro sanitário e, em seguida, o restante em água de abastecimento. Concluiu-se que com o incremento do percentual de percolado aplicado houve aumento do pH e no quantitativo de Ni, Cd e Pb, assim como os teores de Ca e Cu foram reduzidos nos primeiros 0,20 m. A condutividade elétrica do extrato de saturação, e o quantitativo de Fe e Cu não variou ao longo do perfil, entretanto, verificou-se aumento na capacidade de troca catiônica (CTC) - até a dose de 60% de percolado, e do percentual de sódio trocável (PST) – embora sempre abaixo de 15%. A variação no quantitativo de Mn, Zn, Ni, Cd e Pb não ultrapassou os limites impostos pela legislação vigente. Palavras-chave: resíduo líquido, metais pesados, sustentabilidade ANDRADE FILHO, J; DIAS, N. S; BATISTA, R.O; MEDEIROS, J.F; SANTOS JUNIOR, J.A; FERREIRA, A.L.L LANDFILL PERCOLATION IN CASTOR BEAN ULTIVATION: CHEMICAL CHANGES IN RED-YELLOW ARGISOL 2 ABSTRACT The agricultural use of landfill percolation can mitigate certain environmental impacts, especially when possible chemical changes in the soil are monitored. Thus, in Mossoró, RN (5º11’31'”S, 37º20’40” W), between September 2014 and January 2015, this research was developed with the objective of quantifying changes in the chemical characteristics of a Eutrophic red-yellow agrisol cultivated with castor bean plants (Ricinus communis L.) that received landfill percolation. The experiment was conducted in a randomized block with five treatments and four replicates; percentages (0%, 20%, 40%, 60% and 80%) of percolated landfill were initially applied, followed by water supply. It was concluded that, with the increase of the percolation percentage applied, there was an increase in pH and in the quantity of Ni, Cd and Pb, while the Ca and Cu contents were reduced in the first 0.20 m. The electrical conductivity of the saturation extract, and the quantitative Fe and Cu did not vary along the profile. Nevertheless, there was an increase in CTC – up to 60% of the percolation, and exchangeable sodium percentage (ESP) – albeit always below 15%. The variation in the quantity of Mn, Zn, Ni, Cd and Pb did not exceed the limits imposed by the current legislation. Keywords: liquid waste, heavy metals, sustainability

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First Report of Lasiodiplodia theobromae Causing Branch Dieback on Castor Bean in Zhanjiang, China

Plant Disease ◽

10.1094/pdis-08-20-1723-pdn ◽

2021 ◽

Author(s):

Jian Rong Tang ◽

Yue Lian Liu ◽

Xue Gui Yin ◽

Jian Nong Lu ◽

Yu Han Zhou

Keyword(s):

Castor Bean ◽

Ricinus Communis ◽

Elongation Factor ◽

Morphological Characteristics ◽

Aerial Mycelium ◽

Molecular Data ◽

Pathogenicity Test ◽

First Report ◽

Branch Dieback ◽

Β Tubulin

Castor bean (Ricinus communis L.) is an oil crop of significant economic importance in the industry and medicine. In August 2019, a branch dieback disease was observed on castor bean in a field in Zhanjiang (21.17°N, 110.18°E), China. The incidence rate was 35% (n=600 investigated plants). Symptoms were discoloration of leaves, branch dieback, and discoloration of internal stem tissues. The disease had spread to the whole branches and causing the plant to die. Seven diseased branches were collected from seven plants. Margins between healthy and diseased tissues were cut into 2 mm × 2 mm pieces. The surfaces were disinfested with 75% ethanol for 30 s and 2% sodium hypochlorite for 60 s. Then, the samples were rinsed thrice in sterile water, placed on PDA, and incubated at 28 °C. Pure cultures were obtained by transferring the hyphal tips to new PDA plates. Eighteen isolates were obtained (the isolate rate of 75%), which were the same fungus on the basis of morphological characteristics and molecular analysis of the internal transcribed spacer (ITS). A single representative isolate (RiB-1) was used for further study. The colony of RiB-1 was 5 cm in diameter on the 5th day on the PDA culture. The colony was greenish gray with an irregularly distributed and fluffy aerial mycelium, which turned black after 10 days. The mature conidia were 21.3–26.5 µm × 12.2–15.7 µm in size (n=100) and had two ovoid, dark brown cells with longitudinal striations. The morphological characteristics of the colonies were consistent with the description of Lasiodiplodia sp. (Alves et al. 2008). Three regions of the ITS, translation elongation factor (EF1-α), and β-tubulin genes were amplified and sequenced with the primer pairs ITS1/ITS4 (White et al. 1990), EF1-728F/EF1-986R (Alves et al. 2008), and Bt2a/Bt2b (Glass and Donaldson 1995), respectively. The resulting sequences were deposited in the GenBank under accession numbers MN759432 (ITS), MN719125 (EF1-α), and MN719128 (β-tubulin). BLASTn analysis demonstrated that these sequences were 100% identical to the corresponding ITS (MK530052), EF1-α (MK423878), and β-tubulin (MN172230) sequences of L. theobromae. Based on the morphological and molecular data, RiB-1 was determined as L. theobromae. A pathogenicity test was performed in a greenhouse with 80% relative humidity at 25 °C to 30 °C. Ten healthy plants of Zi Bi No. 5 castor bean (1-month-old) were grown in pots with one plant in each pot. Five pots were wound-inoculated with 5-mm-diameter mycelial plugs obtained from 7-day cultures. Five additional pots treated with PDA plugs served as the controls. Inoculated stems were moisturized with sterile cotton for five days. The test was conducted three times. Disease symptoms, similar to those in the field, were observed on the inoculated plants two weeks after inoculation, and L. theobromae was 100% reisolated from the inoculated plants. The control plants remained symptomless, and reisolations were unsuccessful. These results consistent with Koch’s postulates. L. theobromae (Lima et al. 1997) and L. hormozganensis (Fábio et al. 2018) had been reported to cause stem rot on castor bean in Brazil, but whether L. theobromae caused the branch dieback on castor bean in China has not been reported yet. Thus, this study is the first report of L. theobromae causing the branch dieback on castor bean in Zhanjiang, China. This study provides an important reference for the control of the disease.

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Direct in vitro regeneration of castor bean plants (Ricinus communis) using epicotyls

Bioscience Journal ◽

10.14393/bj-v35n2a20198-41475 ◽

2019 ◽

pp. 347-355 ◽

Cited By ~ 1

Author(s):

Alejandro Gil Correal ◽

Catalina Restrepo-Osorio ◽

Javier Correa Álvarez ◽

Diego Fernando Villanueva-Mejía

Keyword(s):

Castor Bean ◽

Ricinus Communis ◽

In Vitro Regeneration ◽

Bean Plants

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