scholarly journals Physiological Analysis of CuO Bulk and Nanoparticles to Castor (Ricinus communis L.)

2016 ◽  
Vol 74 (1) ◽  
pp. 45-56
Author(s):  
Homa Mahmoodzadeh ◽  
Ali Eshaghi ◽  
Tayebeh Gholami
Keyword(s):  
Seed Germination ◽  
Metallic Nanoparticles ◽  
Ricinus Communis ◽  
Fresh Weight ◽  
Ricinus Communis L ◽  
Germination Characteristics ◽  
Dry Biomass ◽  
Physiological Analysis ◽  
Experimental Treatments ◽  
Germination And Growth

Abstract The rapidly increasing multifarious use of metallic nanoparticles in technology has necessitated evaluation of their impact on environmental, biotic and human health. The present study investigated the effects of different concentrations of bulk and nanosized CuO on seed germination and seedling growth of Ricinus communis in a randomized completely design with four replications. The experimental treatments included four concentrations of bulk CuO (10, 50, 100 and 500 ppm), four concentrations of nanosized CuO (10, 50, 100 and 500 ppm), and the control without CuO. The results indicate that only the weighted germination index and seedling dry biomass of Ricinus communis were significantly affected by the treatments. Other germination characteristics, plumule and radicle length, and seedling fresh weight were not significantly affected by bulk and nanosized CuO concentrations. It can be concluded that bulk and nanosized CuO in this cocentrations not toxic for germination and growth of Ricinus communis.

scholarly journals Germination and initial development of canola and radish submitted to castor leaves aqueous extracts

2016 ◽  
Vol 7 (1) ◽  
pp. 104
Author(s):  
Carlos Alberto Gonsiorkiewicz Rigon ◽  
Adriana Tourinho Salamoni ◽  
Luan Cutti ◽  
Adalin Cezar Morais de Aguiar
Keyword(s):  
Seed Germination ◽  
Castor Bean ◽  
Ricinus Communis ◽  
Initial Growth ◽  
Aqueous Extracts ◽  
Brassica Napus L ◽  
Initial Development ◽  
Allelopathic Potential ◽  
Ricinus Communis L ◽  
Radish Seed

This study aimed to evaluate the allelopathic activity of aqueous extracts of castor bean (Ricinus communis L.) leaves on germination and initial growth of canola (Brassica napus L.) and radish (Raphanus sativus L.) seedlings. Two experiments were conducted, usingcanola seeds for the first, which was installed in a 2x7 factorial scheme (with two photoperiods – dark and light and seven extracts concentrations - 0, 1, 2, 4, 8, 16 and 32%). The second experiment consisted of an evaluation of radish seed germination submitted to seven concentrations of the extracts in the dark photoperiod. The germination of the canola seeds was reduced in the dark, and the use of extracts at concentrations of 16% and 32%inhibited seeds germination for both studied photoperiods. The radish seed germination was completely inhibited when the concentration of 32% was used, however, at the concentrations of 4, 8 and 16% a reduction on rootand hypocoyl development of the seedlings were observed, affirming the high allelopathic potential of castor bean aqueous extracts on canola and radish.

scholarly journals Effect of supplemental Ca2+ on NaCl-stressed castor plants (Ricinus communis L.)

2012 ◽  
Vol 71 (1) ◽  
pp. 13-29 ◽  
Author(s):  
Seema Joshi ◽  
Neha Patel ◽  
Indu Pandey ◽  
Amar Pandey
Keyword(s):  
Seed Germination ◽  
Plant Growth ◽  
Critical Level ◽  
Saline Soil ◽  
Ricinus Communis ◽  
Plant Tissues ◽  
Beneficial Effects ◽  
Ricinus Communis L ◽  
Castor Plant ◽  
Level 1

Effect of supplemental Ca2+on NaCl-stressed castor plants (Ricinus communisL.)Greenhouse experiments were conducted to assess the effects of supplemental Ca2+in salinised soil on germination and plant growth response of castor plant (Ricinus communisL. Var. Avani-31, Euphorbiaceae). NaCl amounting to 390 g was thoroughly mixed with soil of seven lots, of 100 kg each, to give electrical conductivity of 4.1 dS m-1. Further, Ca(NO3)2x 4H20 to the quantity of 97.5, 195, 292.5, 390, 487.5, and 585 g was separately mixed with soil of six lots to give 1:0.25, 1:0.50, 1:0.75, 1:1, 1:1.25, and 1:1.50 Na+/Ca2+ratios, respectively. The soil of the seventh lot contained only NaCl and its Na+/Ca2+ratio was 1:0. Soil without addition of NaCl and Ca (NO3)2x 4H20 served as control, with a 0:0 Na+/Ca2+ratio. Salinity significantly retarded seed germination and plant growth, but the deleterious effects of NaCl on seed germination were ameliorated and plant growth was restored with Ca2+supply at the critical level (1:0.25 Na+/Ca2+ratio) to salinised soil. Supply of Ca2+above the critical level further retarded seed germination and plant growth due to the increased soil salinity. Salt stress reduced N, P, K+and Ca2+content in plant tissues, but these nutrients were restored by addition of Ca2+at the critical level to saline soil. In contrast, Na+content in plant tissues significantly increased in response to salinity, but significantly decreased with increasing Ca2+supply to saline soil. The results are discussed in terms of the beneficial effects of Ca2+supply on the plant growth ofRicinus communisgrown under saline conditions.

scholarly journals Seed Germination in Six Anticancerous Plants of Bangladesh

2019 ◽  
Vol 45 (2) ◽  
pp. 151-159
Author(s):  
Nahid Sultana ◽  
M Oliur Rahman ◽  
Md Abul Hassan
Keyword(s):  
Seed Germination ◽  
Ricinus Communis ◽  
Germination Rate ◽  
Calotropis Procera ◽  
Time Rate ◽  
Plumbago Zeylanica ◽  
Ricinus Communis L ◽  
Jatropha Gossypifolia ◽  
Leonurus Sibiricus ◽  
Boerhavia Diffusa

Six medicinal plants, namely Boerhavia diffusa L., Calotropis procera (Ait.) R. Br., Jatropha gossypifolia L., Leonurus sibiricus L., Plumbago zeylanica L. and Ricinus communis L. of Bangladesh having anticancerous properties were investigated with a view to knowing their seed germination time, rate and pattern. The minimum days taken for seed germination in B. diffusa, C. procera, J. gossypifolia, L. sibiricus, P. zeylanica and R. communis were 70, 9, 24, 75, 11 and 14, respectively. The maximum time (130 days) required for germination was observed in Leonurus sibiricus. The highest germination rate (100%) was observed in Plumbago zeylanica, while the lowest rate (10%) was found in Ricinus communis. Epigeal type of germination was noted in all the species employed. Asiat. Soc. Bangladesh, Sci. 45(2): 151-159, December 2019

Prodiamine Controlled Florida Betony (Stachys floridana) in Leatherleaf Fern (Rumohra adiantiformis)

1992 ◽  
Vol 6 (4) ◽  
pp. 961-967 ◽  
Author(s):  
Robert H. Stamps
Keyword(s):  
Seed Germination ◽  
Vase Life ◽  
Fresh Weight ◽  
Yield And Quality ◽  
Application Rates ◽  
One Year ◽  
Rumohra Adiantiformis ◽  
Germination And Growth

Field and container studies were conducted to determine effects of prodiamine on Florida betony and leatherleaf fern. Effects of Florida betony competition on leatherleaf fern frond yield and quality were also determined. Seed germination and growth and flowering of established Florida betony decreased with increasing prodiamine application rates; 4.5 kg ai ha-1or higher prevented seed germination and eliminated or nearly eradicated established betony one year after treatment. Prodiamine treatments up to 6.7 kg ai ha-1did not affect leatherleaf fern growth, frond yield (number, fresh weight) or quality (color, size, vase life). When leatherleaf fern and Florida betony were grown together in containers for 7 mo, fern frond yield and quality were reduced.

scholarly journals Effect of plant growth regulators on callus induction and Rutin production of Ricinus communis L. plant

2017 ◽  
Vol 14 (3) ◽  
pp. 461-468
Author(s):  
Baghdad Science Journal
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Callus Induction ◽  
Ricinus Communis ◽  
Dry Weight ◽  
Fresh Weight ◽  
Ricinus Communis L ◽  
Medical Plant ◽  
The Media

Ricinus communis L. is an important medical plant hence it contains many active compounds. The aim of this research is to study the effect of plant growth regulators on callus induction and Rutin concentration. A combination of Benzyle adenine (BA) and Indol Acetic acid (IAA) at (0.0,1.0,2.0) mg/L was added to the media, the highest fresh weight of the induced callus from stem explant was (4.97) gr . at (1.0,1.0) mg/L BA and IAA consenquently the same combination gave the highest dry weight of callus (0.42) gr. while the combination at (2.0,1.0) mg/L BA and IAA gave the highest fresh weight of induced callus from Leaves explant (5.28) gr., then (2.0,1.0) mg/L BA and IAA gave the highest dry weight for callus induced from leaves at (0.55)gr.Spectrophotometer used to estimate rutin quantity and results showed that the present of rutin at (126.31) ppm in callus induced from stem at (2.0,2.0) mg/L BA and IAA, the highest value of this compound (121.05) ppm on callus induction from the leaves in the same combination as compared with Rutin quantity in intact plant that reached (94.73) ppm in leaves and (68.42) ppm in stem.

EFFECT OF Cd2+ STRESS ON SEED GERMINATION CHARACTERISTICS OF RYEGRASS, INDIAN MUSTARD AND GRAIN AMARANTH

2019 ◽  
Vol 18 (9) ◽  
pp. 1875-1884
Author(s):  
Zhang Jun ◽  
Wang Wenke ◽  
Geng Yani ◽  
Wang Zhoufeng ◽  
Cao Shumiao
Keyword(s):  
Seed Germination ◽  
Indian Mustard ◽  
Grain Amaranth ◽  
Germination Characteristics
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