scholarly journals IDENTIFICATION OF Ricinus communis HYBRIDS FOR LOW PLANT HEIGHT1

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.

scholarly journals Correlations and track analysis for morphoagronomic descriptors in pedigree and parental lines of castor bean

2017 ◽  
Vol 47 (4) ◽  
Author(s):  
Adielle Rodrigues da Silva ◽  
Simone Alves Silva ◽  
Vanessa de Oliveira Almeida ◽  
Gilmara de Melo Araújo ◽  
Carlos Alberto da Silva Ledo
Keyword(s):  
Castor Bean ◽  
Ricinus Communis ◽  
Block Design ◽  
Fruit Weight ◽  
Flowering Plant ◽  
Germplasm Bank ◽  
Randomized Block Design ◽  
Ricinus Communis L ◽  
Parental Lines ◽  
Track Analysis

ABSTRACT: As castor bean (Ricinus communis L.) reveals immense adaptability to various ecological conditions and due to its socioeconomic significance, new studies have emerged primarily to develop more productive cultivars to suit different regions in Brazil. This study aimed to confirmthe correlations and direct and indirect effects of the morphoagronomic descriptors on castor bean productivity, employing correlation studies and track analysis. Between 2014 and 2015, experiments utilizing the randomized block design were performed, with four replications, which included 208 treatments involving pedigree and parental lines of castor bean, drawn from the germplasm bank of the Universidade Federal do Recôncavo da Bahia. Variables in the correlation analysis included primary racemic insertion, stem diameter, number of stem internodes, plant flowering, plant height, racemic length, number of fruits per raceme, fruit weight per raceme, seed yield per fruit and productivity. Correlations among the variables analyzed were imposed, via track analysis, on the direct and indirect influences of the morphoagronomic descriptors on productivity. The most direct and positively influential descriptors included fruit weight per raceme and number of seeds per raceme; the most direct albeit negatively influential descriptors are the number of internodes on the stem and flowering. Therefore, lines with less number of internodes and requiring fewer days to bloom are more highly productive. These descriptors can thus effectively identify the productive lines.

scholarly journals Aluminum tolerance in castor bean lines1

2018 ◽  
Vol 48 (3) ◽  
pp. 299-305
Author(s):  
Lucas Barbosa de Freitas ◽  
Dirceu Maximino Fernandes ◽  
Suelen Cristina Mendonça Maia ◽  
Laerte Gustavo Pivetta ◽  
Maurício Dutra Zanotto
Keyword(s):  
Castor Bean ◽  
Block Design ◽  
Aluminum Tolerance ◽  
Acid Soils ◽  
Al Tolerance ◽  
Tropical Regions ◽  
Randomized Block Design ◽  
Bean Plants ◽  
Management Techniques ◽  
Adequate Management

ABSTRACT Castor bean plants are susceptible to aluminum (Al) in the soil, requiring adequate management techniques for their cultivation in acid soils containing high Al levels, as it occurs in tropical regions. This study aimed to assess the Al tolerance of castor bean lines. A randomized block design, in a 2 x 9 factorial scheme, with four replicates, was used. The treatments consisted of presence and absence of Al, as well as nine castor bean lines (CRZ H06, CRZ H11, CRZ H12, CRZ H15, CRZ H17, CRZ H18, CRZ H19, CRZ H22 and FCA). Based on a distribution into quartiles, the lines were divided into two groups. The Al-tolerant group contained the CRZ H06, H11 and H17 lines, while the group susceptible to Al was composed of CRZ H12, H15, H18, H19, H22 and FCA. The FCA and CRZ H17 lines showed the highest growth, when cultivated without Al.

scholarly journals Agronomic characteristics of common bean and castor bean hybrids in intercropping and monocropping

2018 ◽  
Vol 22 (3) ◽  
pp. 200-205 ◽  
Author(s):  
Cristiane F. Lisboa ◽  
Deyner D. A. Silva ◽  
Itamar R. Teixeira ◽  
Alessandro G. da Silva ◽  
José H. Mota
Keyword(s):  
Common Bean ◽  
Plant Height ◽  
Castor Bean ◽  
Block Design ◽  
Climatic Conditions ◽  
Common Beans ◽  
Agronomic Characteristics ◽  
Randomized Block Design

ABSTRACT Common bean has great importance in the Brazilian economy and castor bean is still emerging in Midwestern Brazil, but with great potential of exploitation by farmers due to the prevailing climatic conditions and flat topography. Hence, this study aimed to evaluate the agronomic characteristics of common bean cultivars and castor bean hybrids in intercropping and monocropping under the edaphoclimatic conditions of the Cerrado region. The randomized block design was used in 4 x 2 + 6 factorial scheme, with three replicates. Treatments were composed of four cultivars of common beans (BRS Pérola, BRS Esteio, BRSMG Realce and BRS Pitanga) intercropped with two castor bean hybrids (Tamar and Ag Ima), plus the respective crops in monocropping. In common bean cultivars, plant height was influenced in the intercropping with castor bean hybrids; however, agronomic characteristics of the castor bean hybrids were not influenced by common bean cultivars. The intercropping between common bean cultivars (BRS Esteio, BRSMG Realce and BRS Pitanga) and castor bean hybrids (Tamar and Ag Ima) was classified as viable by the area equivalence index, since this index presented values greater than 1.0 for the intercropping between these cultivars. This fact indicates that it would take more than one hectare in monocropping to produce the same amount than one hectare in intercropping.

scholarly journals Responses of Foreign GA3 Application on Seedling Growth of Castor Bean (Ricinus communis L.) under Salinity Stress Conditions

Agronomy ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 274
Author(s):  
Xiurong Jiao ◽  
Wenfang Zhi ◽  
Guijuan Liu ◽  
Guanglong Zhu ◽  
Gongneng Feng ◽  
...  
Keyword(s):  
Plant Height ◽  
Seedling Growth ◽  
Castor Bean ◽  
Ricinus Communis ◽  
Proline Content ◽  
Stem Diameter ◽  
Saline Soils ◽  
Salt Tolerant ◽  
Marginal Lands ◽  
Ricinus Communis L

Castor bean (Ricinus communis L.), a promising bioenergy crop, is readily planted in marginal lands like saline soils. A controlled experiment was conducted to explore the possibility of using gibberellic acid (GA3) as a promoter for caster bean grown under NaCl conditions and to try to determine the most appropriate concentration of GA3 for seedling growth. The seeds of salt-tolerant cultivar Zibi 5 were firstly soaked with 0, 200, 250, and 300 µM GA3 for 12 h and then cultured with 1/2 Hoagland solution containing 0, 50, and 100 mM NaCl in pots filled with sand. Plant height, stem diameter, leaf area, dry mater of each organ, activity of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT), soluble protein, and proline content in the leaves were examined. Plant height and stem diameter, SOD, and POD activity was significantly highest in the treatment of 250 µM GA3 under salt concentration of 50 mM NaCl among all the testing days; protein content was highest when GA3 concentration was 250 µM under 100 mM NaCl treatment. This indicated that caster bean seed soaking with 250 µM GA3 could be the most suitable concentration for promoting seedling growth of caster bean, improving their stress resistance.

scholarly journals Inheritance of Some Quantitative Characters in Pigeonpeas (Cajanus cajan (L.) Mill sp.)

1969 ◽  
Vol 55 (1) ◽  
pp. 23-43
Author(s):  
Abad Morales Muñoz ◽  
Raúl Abrams
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Seed Weight ◽  
Block Design ◽  
Flowering Plant ◽  
Frequency Distributions ◽  
Flowering Date ◽  
Randomized Block Design ◽  
Genotypic And Phenotypic Correlations ◽  
High Heritability

Three varieties and an irradiation-derived line of pigeonpeas were used as parents in five crosses as follows: P.I. 5690 X Kaki, P.I. 5690 X Saragateado, P.I. 5690 X 526, Kald X 526, and Saragateado X 526. The F2, F3 and parents of each cross were planted in the field at the Isabela Substation during 1966-67 in a randomized block design with three replicates. Genotypic variability was studied and genotypic and phenotypic correlations were calculated for all the crosses in the F2 and F3 generations. Genetic coefficients of variation and heritability estimates were computed for four traits in five crosses and for six traits in one particular cross. Frequency distributions are shown for date of flowering, plant height, and seed weight. There was much greater variation for all crosses, in general, in seed weight, plant height, and flowering date than in number of seeds per pod. With the exception of number of pods per plant the correlations between seed yield and other traits were not great enough to provide reliable indications for yield. The phenotypic and genotypic correlations between seed yield and number of pods per plant were high, above 0.90. However, their low heritability, 45.3 and 52.1 percent in F2 and F3 generations, tends to indicate that not too much progress could be expected for seed yield improvement by selecting for large number of pods per plant. Good progress by selection could be made by breeders in traits such as flowering date, plant height, and seed weight which showed high heritability values.

scholarly journals Salinity and nitrogen doses in the production and oil content of castor bean

2019 ◽  
Vol 40 (6Supl2) ◽  
pp. 2851
Author(s):  
Allan Nunes Alves ◽  
Hans Raj Gheyi ◽  
José Amilton Santos Junior ◽  
Fernando José da Silva Junior ◽  
Frederico Antônio Loureiro Soares ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Brackish Water ◽  
Oil Content ◽  
Ricinus Communis ◽  
Block Design ◽  
Fruit Weight ◽  
Nitrogen Levels ◽  
Randomized Block Design ◽  
Ricinus Communis L ◽  
Salinity Levels

The proper management of irrigation and mineral nutrition is critical to the success of crops, especially crops grown under salt stress conditions. The objective of this study was to evaluate the production and oil content of castor plants (Ricinus communis L.) irrigated with brackish water with different salinity levels (0.6, 1.6, 2.6, 3.6, and 4.6 dS m-1) and grown under different nitrogen levels (50, 75, 100, 125, and 150 mg of N kg-1 soil). These treatments were arranged in a completely randomized block design with a 5 ? 5 factorial scheme and three repetitions, totaling 75 experimental units. The interaction effect between salinity levels and nitrogen levels affected fruit weight per plant and oil content, and irrigation with brackish water with an electrical conductivity starting at 0.6 dS m-1 reduced the number of racemes per plant, number of fruits, and the weight of fruits and seeds.

scholarly journals CRESCIMENTO E PRODUÇÃO DA MAMONEIRA BRS GABRIELA EM FUNÇÃO DA ADUBAÇÃO ORGÂNICA E NÍVEIS DE ÁGUA

Irriga ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 196
Author(s):  
Evandro Franklin de Mesquita ◽  
Francisco Vanies da Silva Sá ◽  
Paula Lorrane Melo de Jesus ◽  
Cesenildo Figueiredo Suassuna ◽  
Albanisa Pereira de Lima Santos ◽  
...  
Keyword(s):  
Soil Water ◽  
Water Availability ◽  
Castor Bean ◽  
Ricinus Communis ◽  
Block Design ◽  
Organic Fertilizer ◽  
Water Levels ◽  
Experimental Unit ◽  
Ricinus Communis L ◽  
E Mail

CRESCIMENTO E PRODUÇÃO DA MAMONEIRA BRS GABRIELA EM FUNÇÃO DA ADUBAÇÃO ORGÂNICA E NÍVEIS DE ÁGUA  EVANDRO FRANKLIN DE MESQUITA1; FRANCISCO VANIES DA SILVA SÁ2; PAULA LORRANE MELO DE JESUS3; CESENILDO FIGUEIREDO SUASSUNA3; ALBANISA PEREIRA DE LIMA SANTOS 3 E EMANOELA PEREIRA DE PAIVA4 1Engenheiro Agrônomo, Doutor em Engenharia Agrícola, Professor Adjunto, Centro de Ciências Humanas e Agrarias (CCHA), Universidade Estadual da Paraíba (UEPB), Catolé do Rocha, PB, e-mail: [email protected] Engenheiro Agrônomo, Doutorando em Engenharia Agrícola, Universidade Federal de Campina Grande – UFCG, Centro Tecnologia e Recursos Naturais – CTRN, Campina Grande - PB, Brasil. E-mail: [email protected] Licenciado em Ciências Agrárias, Centro de Ciências Humanas e Agrarias (CCHA), Universidade Estadual da Paraíba (UEPB), Catolé do Rocha, PB, e-mail: [email protected]; [email protected]; [email protected] Engenheira Agrônomo, Doutoranda em Fitotecnia, Departamento de Ciências Vegetais, Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, RN. E-mail: [email protected].  1 RESUMO Objetivou-se estudar o crescimento e a produção da mamoneira (Ricinus communis L.) BRS Gabriela em função de doses de matéria orgânica e água disponível no solo. O experimento foi conduzido no período de agosto de 2013 a janeiro de 2014, em estufa agrícola nas dependências da Universidade Estadual da Paraíba, Campus IV, Catolé do Rocha-PB. O delineamento experimental adotado foram os blocos casualizados e os tratamentos foram distribuídos em esquema fatorial 5 x 4, sendo o primeiro fator constituído por 5 doses de húmus de minhoca a base de esterco bovino (0; 5; 10; 15 e 20 % do volume do vaso) e o segundo em 4 níveis de água disponível no solo (70; 80; 90 e 100%), resultando em 20 tratamentos, com três repetições e 1 planta por repetição, totalizando 60 unidades experimentais. Cada unidade experimental foi constituída de um vaso plástico com capacidade para 30 L e uma planta de mamoneira BRS Gabriela. Aos 120 dias após a semeadura as plantas foram avaliadas quanto ao crescimento e produção. De maneira geral o maior crescimento foi alcançado pelas plantas cultivadas nos maiores regimes hídricos e adubadas com 6 L de húmus. Respostas positivas da adubação orgânica sob a produção da mamoneira forma obtidas em condições de disponibilidade de água superiores a 90% da capacidade de campo. As plantas cultivadas com 100% da disponibilidade de água no solo, sob a dose de 6L de húmus de minhoca a base de esterco bovino obtiveram as maiores produções. Palavras-chave: Ricinus communis L., irrigação, húmus de minhoca.  MESQUITA, E.F.; SÁ, F.V.S.; JESUS, P.L.M.; SUASSUNA, C.F.; SANTOS, A. P. L.; PAIVA, E.P.GROWTH AND PRODUCTION OF CASTOR BRS GABRIELA A FUNCTION OF ORGANIC FERTILIZER AND WATER LEVELS  2 ABSTRACT Aimed to study the growth and production of castor bean (Ricinus communis L.) BRS Gabriela as a result of the levels of organic matter and soil water availability. The experiment was conducted from August 2013 to January 2014, in a greenhouse on the premises of the State University of Paraíba, Campus IV, Catolé Rocha-PB, Brazil. The experimental design was a randomized block design and the treatments were arranged in a factorial 5 x 4, with the first factor consists of 5 doses of earthworm humus as a base of cattle manure (0, 5, 10, 15 and 20% of vessel volume) and the second in four levels of available soil water (70, 80, 90 and 100%), resulting in 20 treatments with three replications and 1 plant per repetitions, totalizing 60 experimental units. Each experimental unit consisted of a plastic container with a capacity of 30 L and a castor bean plant BRS Gabriela. At 120 days after planting we evaluated growth and production. In general the highest growth was achieved by plants grown in the largest water regimes, fertilized with 6 L of earthworm humus. Positive responses of organic fertilizer in the production of castor bean form obtained in water availability conditions above 90% of field capacity. Plants grown with 100% availability of water in the soil, in the dose of 6L earthworm humus the basis of manure obtained the highest yields. Keywords: Ricinus communis L., irrigation, earthworm humus 

Genetic variability studies for yield, yield contributing and quality traitsin okra [Abelmoschus esculentus (L.) Moench.]

2016 ◽  
Vol 50 (6) ◽  
Author(s):  
R. A. Jadhav ◽  
S. B. Bagwale ◽  
L. N. Jawale ◽  
D. B. Deosarkar
Keyword(s):  
Vitamin C ◽  
Plant Height ◽  
Iron Content ◽  
Block Design ◽  
Calcium Content ◽  
Phenotypic Selection ◽  
Randomized Block Design ◽  
Additive Gene ◽  
High Heritability ◽  
Number Of Branches

The present investigation was carried out during Kharif 2014. The experimental material consists of 40 different genotypes of okra with three checks Arka Anamika, Parbhani Kranti and Pusa Sawani. The materials were grown in randomized block design with three replications during Kharif 2014 on the field of Department of Agricultural Botany, College of Agriculture, VNMKV, Parbhani. The investigation carried out in the present study revealed that the genotypes 136 Thin, 003163, Kashi Pragati, Kashi Vibhuti and BO 13 showed better performance for traits namely plant height, length of fruit, calcium content, iron content, vitamin C content and fruit yield per hectare. Among the genotypes 136 Thin and 003163 had given highest yield. The high genotypic and phenotypic coefficient of variation was observed for characters namely number of branches, yield per hectare, yield per plot and yield per plant. All these traits indicate additive effect showed response for selection. High heritability estimates were found for characters like number of branches, yield per plot, iron content, yield per plant, plant height, vitamin C content, number of seeds per fruit (dry fruit), fruit bearing node and calcium content indicated good inheritance of these characters. High heritability coupled with high expected genetic advance was observed for characters like plant height, calcium content, yield per plant and yield per hectare, indicated presence of additive gene action and phenotypic selection may become more effective for desired genetic improvement.

scholarly journals Productivity of castor bean plants intercropped at different plant densities with Urochloa ruziziensis

2019 ◽  
Vol 23 (2) ◽  
pp. 109-113 ◽  
Author(s):  
Carlos F. dos S. Cordeiro ◽  
Fábio R. Echer ◽  
Lucas H. T. Pires ◽  
José E. Creste
Keyword(s):  
Grain Yield ◽  
High Temperatures ◽  
Castor Bean ◽  
Plant Density ◽  
Block Design ◽  
Raw Material ◽  
Low Fertility ◽  
Randomized Block Design ◽  
Bean Plants ◽  
Plant Densities

ABSTRACT Castor bean is an important raw material to produce biofuel in Brazil and can be grown in several regions of the country due to its good adaptation and tolerance to high temperatures and water deficit. The objective of this study was to evaluate the productivity of castor bean plants intercropped at different plant densities with Urochloa ruziziensis. The experiment was conducted in a randomized block design with four replications, using a 4 × 2 factorial arrangement, consisting of four plant densities (13,574, 24,512, 36,816, and 40,723 plants ha-1) of castor bean and two crop systems (single crop, and intercrop with Urochloa ruziziensis). The data were subjected to analyses of variance and regression, and means were compared by the Tukey’s test (p < 0.05). The intercrop system reduced the number of pods per plant by 15%, but it did not significantly affect the castor bean grain yield. Increasing plant density reduced linearly the proportion of plants harvested, reaching 22.1%, from the lowest to the highest plant density used; the highest grain yield was achieved using 36,816 plants ha-1 for both intercrop and single crop systems. Intercropping castor bean with U. ruziziensis does not reduce the castor bean grain yield and is an alternative to produce biomass for following crops, especially in production environments with low fertility soils, high temperatures, and infrequent rainfall.

scholarly journals Deficiency symptoms and uptake of micronutrients by castor bean grown in nutrient solution

2012 ◽  
Vol 36 (1) ◽  
pp. 233-242 ◽  
Author(s):  
José Lavres Junior ◽  
Cleusa Pereira Cabral ◽  
Mônica Lanzoni Rossi ◽  
Thiago Assis Rodrigues Nogueira ◽  
Neusa de Lima Nogueira ◽  
...  
Keyword(s):  
Nutrient Solution ◽  
Castor Bean ◽  
Cell Walls ◽  
Dry Matter ◽  
Block Design ◽  
Cell Ultrastructure ◽  
Fruit Yield ◽  
Deficiency Symptoms ◽  
Randomized Block Design ◽  
Bean Plants

Castor bean is a nutrient-demanding species, but there is still little information on its micronutrient requirements. The objectives of this study were to evaluate the effects of levels of B (2.5, 12.5 and 25.0 µmol L-1), Cu (0.05, 0.25 and 0.50 µmol L-1), Mn (0.2, 1.0 and 2.0 µmol L-1) and Zn (0.2, 1.0 and 2.0 µmol L-1) in a nutrient solution on plant B, Cu, Mn and Zn concentrations and uptake, vegetative growth and fruit yield of castor bean "Iris", grown in greenhouse. The experiment was arranged in a completely randomized block design with three replicates. The first deficiency symptoms were observed for B, followed by Zn, Cu and Mn. The main changes in the cell ultrastructure due to lack of B were thickening of the cell walls and middle lamellae, distorted chloroplasts and tightly stacked thylakoids, besides the absence of starch grains. The Mn, Zn and Cu deficiencies led to disruption of chloroplasts, disintegration of thylakoids and absence of amyloplasts. The concentration and uptake of B, Cu, Mn, and Zn in castor bean plants increased with micronutrient supply in the solution. Fruit yield was drastically reduced by B and Mn deficiencies. On the other hand, the dry matter yield of the shoot and root of castor bean plants was not. In the treatment with full nutrient solution, the leaves accumulated 56 and 48 % of the total B and Mn taken up by the plants, respectively, and the seeds and roots 85 and 61 % of the total Cu and Zn taken up, respectively. This shows the high demand of castor bean Iris for B and Mn for fruit yield.

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