Corchorus olitorius

About: Corchorus olitorius is a research topic. Over the lifetime, 638 publications have been published within this topic receiving 5250 citations. The topic is also known as: Mulukhiyah & Nalta jute.

Haploidy in Jute (Corchorus olitorius L.)

Abstract: HAPLOIDY was first reported to occur in Datura stramonium by Blakeslee et al.1. Since then, haploids occurring spontaneously or induced under artificial conditions have been recorded in many flowering plants2. As far as we are aware, haploidy in Corchorus has not yet been reported. Datta3 reported a case of polyembryony in Corchorus without, however, any cytological analysis of the twin seedlings.

Physical and chemical characterization of Corchorus olitorius leaves dried by different drying techniques

Abstract: Abstract Molokhia, Corchorus olitorius , is a popular leafy vegetable, known in many world regions as a good source of nutritional and medicinal properties. Due to its short shelf life and the limited harvesting time, processing such as drying techniques permit to preserve and provide it throughout the year. In the present study, it was attempted to reveal the main physical and chemical characteristics of molokhia leaves. Also, three drying techniques, shade drying (SHD), convective drying (COD), and microwave drying (MID), have been applied to study the kinetics and their main physical and chemical effects. The analysis demonstrated that molokhia leaves are a good source of phenolic compounds, flavonoids, and chlorophylls pigments. Those bioactive compounds have provided the leaves with considerable antiradical scavenging and reducing capacities. Drying time decreased from days, in the case of SHD, to some hours when using COD, and less than 20 min when using MID. Increasing drying temperature and power input have increased the drying rate. Modelling of drying kinetics of MID three power inputs (350, 500 and 750 W) and COD at 60 °C exhibited a high fitting for most empirical models (R 2 > 0.980). SHD was less deleterious on leaves colour. Also, it preserved the content of phenolics, flavonoids, and thus the antioxidant activity of leaves. On the contrary, COD at 80 °C had a detrimental effect on previous components and their activity. Vega-Gálvez model can be presented as the best-fitted model to describe the rehydration kinetics of dried leaves. Rheological analysis of the aqueous extracts of the leaves demonstrated the effect of time and grinding on the increase of mucilage diffusion. The obtained results could help industrials to choose the convenient drying method and more analysis on the subject are recommended.

X-ray induced mutations in jute (Corchorus capsularis L. and Corchorus olitorius L.)

Abstract: Dry dormant seeds of three varieties of jute (C. capsularis & b. olitorius), which yield commercial fibers, were irradiated with different doses of x-rays ranging from 10 kR to 100 kR at 10 kR intervals. The percentage of germination, survival rates, the resulting morphological abnormalities in different generations, the total abnormalities, the total mutation frequency including chlorophyll mutations, and the complete, mutation spectrum are described in detail. Mutations were classified into different groups and each mutant was briefly described. Several directly useful mutations were observed with emphasis on the fiber yield. Interesting results were obtained after crossing mutants, where the first high yielding hybrid was evolved by the senior author. (auth)

Critical nitrogen dilution curve and nitrogen nutrition index for jute mallow (corchorus olitorius l.) in southern benin

Abstract: Indigenous crops, such as jute mallow (Corchorus olitorius L) have high potential for improving nutrient efficiency and income source diversification of farmers in sub-Saharan Africa A better understanding of plant responses to nitrogen (N) is essential in shedding light on the trend towards increasing fertilizer applications for commercially grown jute mallow The aim of this study was to determine the critical N dilution curve in order to assess the N nutrition index (NNI) in jute mallow in southern Benin Above-ground dry matter (DM) and N concentration were determined weekly during the 2010 and 2011 growing seasons and six N treatments of 0, 30, 60, 120, 180 or 240 kg N ha−1 were tested under irrigated conditions A critical N curve (Nc = 335 W−018), where W is the DM in Mg per ha, was plotted based on the N concentration in the whole plant The critical N concentration (Nc ) represents the minimal N concentration required to achieve maximum growth According to significant differences in DM at each sampling date, data points were divided into two groups representing either N deficient or N excess conditions All data points in the N deficient group were under the critical N curve and most data points in the N excess group were on or above the critical N curve, therefore confirming the validity of the critical N curve determined in southern Benin The NNI calculated as the ratio between the measured N concentration and predicted Nc , ranged from 055 to 130 The equation for the critical N curve and NNI determined in this study for jute mallow could potentially be used as a parameter for N application under non-deficient water conditions in southern Benin (Resume d'auteur)