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 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 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

Description of 90 inbred lines of castor plant (Ricinus communis L.)

Euphytica ◽  
2014 ◽  
Vol 202 (1) ◽  
pp. 13-33 ◽  
Author(s):  
Marco Baldanzi ◽  
Mirina Luiza Myczkowski ◽  
Mariangela Salvini ◽  
Mario Macchia
Keyword(s):  
Ricinus Communis ◽  
Inbred Lines ◽  
Ricinus Communis L ◽  
Castor Plant

2S albumin gene expression in castor plant (Ricinus communis L.)

2004 ◽  
Vol 81 (9) ◽  
pp. 867-872 ◽  
Author(s):  
Grace Q. Chen ◽  
Xiaohua He ◽  
Lucy P. Liao ◽  
Thomas A. McKeon
Keyword(s):  
Gene Expression ◽  
Ricinus Communis ◽  
2S Albumin ◽  
Albumin Gene ◽  
Ricinus Communis L ◽  
Castor Plant

scholarly journals Recovery of an Early Evidence of Castor Plant, Ricinus Communis L. from the Central Sudan and its Positioning within a World-wide Context

2014 ◽  
Vol 5 (2) ◽  
pp. 45
Author(s):  
Anwar A-Magid
Keyword(s):  
Material Culture ◽  
Ricinus Communis ◽  
Archaeological Site ◽  
Tropical Africa ◽  
Central Sudan ◽  
Modest Contribution ◽  
Ricinus Communis L ◽  
The World ◽  
Ancient Times ◽  
Castor Plant

Evidence of castor plant R. communis, L. is recovered from the Early Holocene archaeological site of Kabbashi Haitah in the Central Sudan and dated to c. 7700 - 7200 bp. This evidence represents the earliest botanical evidence recovered –so far- from the Central Sudan and elsewhere in Eastern Tropical Africa and the World. No evidence is found in the material culture remains which might indicate the likelihood of its being imported. Most of the ancient and traditional utilizations of castor plant are strikingly similar despite their being practised at different times in different and far apart regions in the World. This modest contribution stands to show that the wide spread and utilizations of castor plant strongly accentuate its significant and indispensable role since ancient times. It also reflects that inedible plants, as seen in the case of castor plant, were (and still are) not less important than food plant, hence stresses the need for attending to their study in a fashion equal to that of studying foodplants since prehistoric and early historic times. 

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