Leaf gas exchange, chloroplastic pigments and dry matter accumulation in castor bean (Ricinus communis L) seedlings subjected to salt stress conditions

Biostimulants can potentially improve plant growth and development, modifying physiological processes. This study evaluated the effect of four biostimulants on the growth of ‘Hartón’ plantain plants and the leaf gas exchange during the vegetative phase. This experiment was developed on a plantain farm’s nursery in Fuente de Oro (Colombia) with a randomized complete block design with four replicates. The treatments were the biostimulants: Bactox WP®: Bacillus subtilis (Bs); Baliente®: Bacillus amyloliquefaciens (Ba); Tierra Diatomeas®: silicon dioxide (Si); Re-Leaf®: salicylic acid (SA) and the control (water). All products had a positive effect on the accumulation of total dry matter (DM) (between 58.4 and 21.9%) and on the photosynthetic activity (a maximum of 110 and 24.3% in first and second evaluation), as compared to the control, while no differences were found (P>0.05) for the foliar emission rate and chlorophyll content between the treatments. The plants treated with Bs had the greatest DM accumulation at the end of the study and a constant, high photosynthetic activity. All the while Bs, Ba and Si managed to stimulate greater early photosynthetic activity. According to the results, the use of these biostimulants during the vegetative phase had an effect on the physiological processes that enhance DM accumulation in plantain plants, which could be potentially useful for the transplanting stage and increase the reserves used during their establishment and development in the field.

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Effects of the 'Stay Green' Genotype GGd1d1d2d2 on Leaf Gas Exchange, Dry Matter Accumulation and Seed Yield in Soybean (Glycine max L. Merr.)

Annals of Botany ◽

10.1006/anbo.2000.1324 ◽

2001 ◽

Vol 87 (3) ◽

pp. 313-318 ◽

Cited By ~ 15

Author(s):

V Luquez

Keyword(s):

Glycine Max ◽

Gas Exchange ◽

Seed Yield ◽

Dry Matter ◽

Leaf Gas Exchange ◽

Dry Matter Accumulation ◽

Stay Green ◽

Glycine Max L

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Salt-Tolerance in Castor Bean (Ricinus communis L.) Is Associated with Thicker Roots and Better Tissue K+/Na+ Distribution

Agriculture ◽

10.3390/agriculture11090821 ◽

2021 ◽

Vol 11 (9) ◽

pp. 821

Author(s):

Junlin Zheng ◽

Gilang B. F. Suhono ◽

Yinghao Li ◽

Maggie Ying Jiang ◽

Yinglong Chen ◽

...

Keyword(s):

Salt Stress ◽

Salt Tolerance ◽

Castor Bean ◽

Ricinus Communis ◽

Dry Weight ◽

Root Diameter ◽

Oilseed Crop ◽

Salt Tolerant ◽

Ricinus Communis L ◽

Young Leaves

Soil salinity is a serious threat to agriculture worldwide. Castor bean (Ricinus communis L.) is an in-demand oilseed crop containing 40–60% highly valued oil in its seeds. It is moderately sensitive to salinity. Two glasshouse experiments were conducted to assess plant growth and ion tissue distribution in different castor bean genotypes under various salt stress conditions to explore their potential for cultivation on saline land. Experiment 1 evaluated the response of five castor bean genotypes to four salt treatments (0, 50, 100, or 150 mM NaCl) up to 91 days after sowing (DAS). Experiment 2 further evaluated two genotypes selected from Experiment 1 in 1 m deep PVC tubes exposed to 0, 100, or 200 mM NaCl treatment for 112 DAS (Experiment 2). Experiment 1 showed that salt addition (particularly 150 mM NaCl) reduced plant height, stem diameter, shoot and root dry weights, photosynthetic traits, and leaf K+/Na+ ratio while increasing the leaf Na+ concentration of castor bean plants. Two genotypes, Zibo (Chinese variety) and Freo (Australian wild type), were more salt-tolerant than the other tested genotypes. In Experiment 2, salt-stressed Zibo flowered earlier than the control, while flowering time of Freo was not influenced by salt stress. The 200 mM NaCl treatment reduced the total root length and increased the average root diameter of both Zibo and Freo compared to the control. In addition, the 200 mM NaCl treatment significantly decreased total leaf area, chlorophyll content, and shoot and root dry weight of both castor bean genotypes by 50%, 10.6%, 53.1%, and 59.4%, respectively, relative to the control. In contrast, the 100 mM NaCl treatment did not significantly affect these traits, indicating that both genotypes tolerated salt stress up to 100 mM NaCl. In general, Freo had greater salt tolerance than Zibo, due to its higher average root diameter, lower Na+ concentration, and higher K+/Na+ ratio in young leaves under salt conditions. In conclusion, genotype Freo is recommended for cultivation in saline soils and could be used to breed high-yielding and salt-tolerant castor bean genotypes.

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Tolerance of castor bean cultivars under salt stress

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v20n6p557-563 ◽

2016 ◽

Vol 20 (6) ◽

pp. 557-563 ◽

Cited By ~ 1

Author(s):

Francisco V. da S. Sá ◽

Emanoela P. de Paiva ◽

Evandro F. de Mesquita ◽

Antonio M. P. Bertino ◽

Marcelo A. Barbosa ◽

...

Keyword(s):

Salt Stress ◽

Salt Tolerance ◽

Castor Bean ◽

Dry Matter ◽

Growth Stage ◽

Dry Matter Accumulation ◽

Initial Growth ◽

Initial Growth Stage ◽

Salinity Levels

ABSTRACT This study aimed to evaluate the tolerance of castor bean cultivars under salt stress during the initial growth stage. The experiment was set in randomized blocks, in a 5 x 4 factorial scheme, resulting in 20 treatments, 5 salinity levels (0.6-control, 1.2, 1.8, 2.4 and 3.0 dS m-1) and 4 castor bean cultivars (BRS Energy, LA Guarani, BRS Gabriela and IAC 028)] with 3 replicates. At 30 days after sowing, plants were evaluated for growth, dry matter accumulation and salt tolerance. Increased salinity levels in the water used for irrigation reduced the growth of all the studied cultivars. The salt tolerance of the studied castor bean cultivars follows the following order: BRS Energia > BRS Gabriela = IAC 028 > LA Guarani.

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Barium extraction potential by mustard, sunflower and castor bean

Scientia Agricola ◽

10.1590/s0103-90162009000100008 ◽

2009 ◽

Vol 66 (1) ◽

pp. 59-63 ◽

Cited By ~ 28

Author(s):

Aline Renée Coscione ◽

Ronaldo Severiano Berton

Keyword(s):

Ion Exchange ◽

Castor Bean ◽

Dry Matter ◽

Exchange Resin ◽

Ricinus Communis ◽

Ion Exchange Resin ◽

Soil Material ◽

Matter Production ◽

Ricinus Communis L ◽

Resin Method

Barium salts are used extensively for industrial purposes, generating residues that, if not appropriately disposed, can increase soil Ba content. The aim of the present work was to evaluate Ba extraction potential of mustard (Brassica juncea Czern.), sunflower (Helianthus annuus L.), and castor bean (Ricinus communis L.), grown in a soil artificially contaminated with increasing Ba additions. A greenhouse experiment was carried out by adding BaSO4 to a Rhodic Hapludox sample, at the 0, 150 and 300 mg kg-1 rates. After harvesting, the pot soil material was also analyzed for exchangeable Ba by CaCl2 extraction and by an ion exchange resin method. None of the plant species tested presented toxicity symptoms, decreased nutrient accumulation or decreased dry matter production in response to Ba treatments. The accumulation of Ba, in decreasing capacity was: sunflower> mustard> castor bean. The largest accumulation was with sunflower at 300 mg kg-1 of Ba added to the soil. When evaluated by the transference factor, none of the species tested was an efficient Ba accumulator, up to 47 days after emergence. The ion exchange resin method was not adequate to evaluate Ba availability to these plants.

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Leaf chlorophyll fluorescence, hyperspectral reflectance, pigments content, malondialdehyde and proline accumulation responses of castor bean (Ricinus communis L.) seedlings to salt stress levels

Industrial Crops and Products ◽

10.1016/j.indcrop.2009.07.015 ◽

2010 ◽

Vol 31 (1) ◽

pp. 13-19 ◽

Cited By ~ 111

Author(s):

Gang Li ◽

Shuwen Wan ◽

Jian Zhou ◽

Zhiyong Yang ◽

Pei Qin

Keyword(s):

Salt Stress ◽

Chlorophyll Fluorescence ◽

Castor Bean ◽

Ricinus Communis ◽

Proline Accumulation ◽

Hyperspectral Reflectance ◽

Leaf Chlorophyll ◽

Ricinus Communis L ◽

Stress Levels ◽

Leaf Chlorophyll Fluorescence

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Micropropagated bananas are more susceptible to fusarium wilt than plants grown from conventional material

Australian Journal of Agricultural Research ◽

10.1071/a98013 ◽

1998 ◽

Vol 49 (7) ◽

pp. 1133 ◽

Cited By ~ 22

Author(s):

A. W. Whiley ◽

C. Searle ◽

K. G. Pegg ◽

M. K. Smith ◽

P. W. Langdon ◽

...

Keyword(s):

Gas Exchange ◽

Fusarium Oxysporum ◽

Fusarium Wilt ◽

Dry Matter ◽

Leaf Gas Exchange ◽

Dry Matter Accumulation ◽

Planting Material ◽

Micropropagated Plants ◽

Conventional Material ◽

Race 4

The reaction of field-grown micropropagated bananas, Musa cv. Williams (AAA, Cavendish subgroup) and cv. Goldfinger (AAAB, FHIA-01), to subtropical race 4 Fusarium oxysporum f. sp. cubense (Foc) was compared with the reaction of plants grown from conventional planting material (sections of the rhizome, termed bits). Leaf gas exchange of plants was determined, and growth and dry matter accumulation were measured. Comparisons were made among these parameters from shortly after planting, throughout winter, and into spring when a high percentage of the plants started to show external symptoms of fusarium wilt. Micropropagated bananas were significantly more susceptible to race 4 Foc than plants derived from bits. This was irrespective of planting times, cultivars used, or whether the bits had first been established in containers in the glasshouse (as for micropropagated plants) or been planted directly in the field. This greater susceptibility does not appear to be a consequence of differences in maximum photoassimilation rates, greater photoassimilate demand, or lack of carbohydrate reserves once plants became established.

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