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Sunflower (Helianthaus annuus L.) Seeds Germination in Saline Hydroculture
Macauley Asim Ittah,
Idorenyin Asukwo Udo,
Ekemini Edet Obok
Issue:
Volume 7, Issue 4, August 2019
Pages:
72-75
Received:
15 March 2019
Accepted:
26 April 2019
Published:
31 July 2019
Abstract: Salinity affects seed germination, many plant growth and yield traits. This study assessed seed response, quality, ability and phenetic relationship in three sunflower (Helianthaus annuus L.) varieties (SSL-803, SSL-807 and SSL-809) in eleven concentrations of NaCl + CaCl2 solutions (1:1 by weight). Electrical conductivity of the saline solutions ranged from 0.16 to 31.25 dS/m. The repeated factorial experiment (3x11) was laid out in a completely randomized design with three replications in the screenhouse. Germination of 20 seeds per treatment was evaluated within five to ten days after culturing in filter-paper lined petri-dishes. Salinity above 15.63 dS/m significantly (p ≤ 0.05) inhibited seed germination; three seeds of twenty (16.7%) of variety SSL-809 and eight seeds (41.7%) of SSL-807 germinated in 18.75 dS/m solution, and high salinity (18.75 to 31.25 dS/m) caused seed discolouration and shrivelling in SSL-809 and SSL-803 varieties. Cluster analysis (Bray-Curtis’ method) partitioned SSL-807 on a par with SSL-803 in terms of tolerance and adaptability to salinity, SSL-809 was at aversion with the two varieties in these traits. The variety SSL-807 is recommended for cultivation in soils with electrical conductivity below 21.88 dS/m and SSL-803 in saline environments below 18.75 dS/m. Future research on sunflower seed germination will be carried out on the field to verify and fully elucidate current studies.
Abstract: Salinity affects seed germination, many plant growth and yield traits. This study assessed seed response, quality, ability and phenetic relationship in three sunflower (Helianthaus annuus L.) varieties (SSL-803, SSL-807 and SSL-809) in eleven concentrations of NaCl + CaCl2 solutions (1:1 by weight). Electrical conductivity of the saline solutions r...
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Screening of Chilli (Capsicum annum L.) Genotypes for Drought Tolerant at Seedling Emergence Stage
Md. Rezwan Molla,
Iftekhar Ahmed,
Rumman Ara,
Lutful Hassan,
Md. Motiar Rohman
Issue:
Volume 7, Issue 4, August 2019
Pages:
76-85
Received:
15 July 2019
Accepted:
16 August 2019
Published:
28 August 2019
Abstract: Forty seven chilli (Capsicum annum L.) genotypes were evaluated for their genetic potential to drought tolerant at germination stage using 12.5% polyethylene (PEG, MW6000). Relative germination energy (RGE), relative germination rate (RGR), relative germination index (RGI), relative vitality index (RVI) and their relative PEG injury rate were computed to identify the most tolerant genotypes on germination stage. Significant differences were observed among the genotypes, treatments and their interactions for evaluated traits suggesting a great amount of variability for drought tolerant in chilli. Based on aggregated score of RGE, RGR, RGI and RVI parameters BD-10906, BD-10912, BD-10911, BD-10916 and BD-10913 were the top five genotypes, whereas BD-10902, RT-20, AM-29, BD-10893 and BD-10930 lowermost five genotypes in the rank of drought tolerant which is an indication of their tolerant and susceptible to drought stress. The lowest relative PEG injury rate was observed in tolerant genotypes, contrary the highest rate was recorded in susceptible genotypes. Dendrogram using Agglomerative Clustering Method grouped the 47 genotypes into four different clusters at the 0.668 co-phenetic correlation coefficient. Drought tolerant chilli genotypes grouped in cluster I, while the susceptible genotypes clustered together in group III and IV and a number of moderate tolerant genotypes gathered in cluster II. Consequently the maximum mean values of tested parameters viz. RGR (91.30), RGE (30.43), RGI (40.58) and RVI (54.10) were observed in clusters I. Positive and significant correlation values were observed between the tolerant indications parameters. RGI showed comparatively strong and positive correlation with all tested parameters. Thus, tolerant and susceptible genotypes will be progressed for further tolerant study in seedling stage.
Abstract: Forty seven chilli (Capsicum annum L.) genotypes were evaluated for their genetic potential to drought tolerant at germination stage using 12.5% polyethylene (PEG, MW6000). Relative germination energy (RGE), relative germination rate (RGR), relative germination index (RGI), relative vitality index (RVI) and their relative PEG injury rate were compu...
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Natural Herbs and Spices: A Great Resource for Skin Care Cosmetics
Ferdoushi Jahan,
Afroza Akter Happy,
Mohammad Moynul Hasan Chowdhury,
Mohammad Arif Hossain
Issue:
Volume 7, Issue 4, August 2019
Pages:
86-99
Received:
30 July 2019
Accepted:
22 August 2019
Published:
16 September 2019
Abstract: Nature is recognized as the most valuable blessing to the human being, since all one needed to exist in this universe are provided in nature. Hence, from the ancient time, human beings used typical natural ingredients for their daily requirements such as medicines as well as cosmetics. Nowadays men and women are very much willing to look them beautiful. Further they are very much conscious about their physical as well as mental fitness i.e. people like to live healthy. Skin is the largest organ of human body. Hence, these conscious people show much interest on skin care activities. They have a tendency to use beauty products that includes herbs to look younger and more charming. Cosmetics alone are not sufficient for proper skin care, so the addition of active ingredients is necessary to check the damage and ageing of the skin. Recently, herbal cosmetics have gained more popularity and more acceptability among the people than synthetic ones due to their lesser or almost nil side effects. In some cases, synthetic cosmetic products may cause severe damage to human skin as those products may contain harmful chemicals. Natural ingredients like herbs, fruits, flowers, barks, rhizomes, leaves, seeds, spices etc. have been used by both men and women over the whole world and these ingredients are recognized as the best according to their choice. For this reason, at present times, in skin care cosmetic preparations, these natural ingredients are included directly or their extracts and essential oils are used randomly. In this current article, effective skin care properties of some indigenous herbs and spices of Bangladesh are discussed.
Abstract: Nature is recognized as the most valuable blessing to the human being, since all one needed to exist in this universe are provided in nature. Hence, from the ancient time, human beings used typical natural ingredients for their daily requirements such as medicines as well as cosmetics. Nowadays men and women are very much willing to look them beaut...
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