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Undergrowth Species Composition of the Exotic and Indigenous Tree Plotsin Deciduous Forest Area of Hoteya Forest Range of Tangail District, Bangladesh
Md. Mijanur Rahman,
Saleh Ahammad Khan,
Gazi Mosharof Hossain,
Md. Abdur Rahim
Issue:
Volume 1, Issue 1, November 2016
Pages:
1-12
Received:
29 September 2016
Accepted:
10 October 2016
Published:
3 November 2016
DOI:
10.11648/j.ajpb.20160101.11
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Abstract: This study was conducted to assess the impacts of monoculture of exotic tree species on the species composition and status of undergrowths in relation to that of indigenous tree species and to provide the baseline data on the undergrowth species of the plantation forests of exotic and indigenous tree species. This study reports 116 undergrowth species belonging to 97 genera and 52 families of vascular plants from the tree plots of exotic Acacia auriculiformis A. Cunn. ex Benth. and Eucalyptus camaldulensis Dehnh. and 150 undergrowth speciesunder 122 genera and 56 families from those of indigenous Shorea robusta Roxb. and Mangifera indica L. of Hoteya Forest Range of Tangail district. Most of the 182 undergrowth species, found in exotic and indigenous tree plots together, were Angiosperms (±95%) and only ±5% were Pteridophytes. 63.74% of these species were herbs, 25.82% trees and 10.44% shrubs. In exotic tree plots, the undergrowths of 86, 87 and 76 species, and in indigenous tree plots, the undergrowths of 118, 113 and 111 species were found in summer-, monsoon- and winter seasons, respectively. In S. robusta-, A. auriculiformis-, E. camaldulensis-, and M. indica tree plots, a total of 93, 69, 61 and 42 species were found in summer; 90, 77, 55, and 46 species in monsoon; and 82, 68, 39 and 51 species in winter seasons, respectively. In exotic tree plots, Axonopus compressus (Sw.) P. Beauv. was found in highest relative density and frequency and Cyperus iria L. in highest relative abundance, whereas, in indigenous tree plots, A. compressus was found in highest relative density and abundance, and Clerodendrum infortunatum L. in highest relative frequency. Species number and density were significantly different among the plots of A. auriculiformis, S. robusta, M. indica and E. camaldulensis. This study concluds that, indigenous tree plots harbor the higher number of species (18.68%) than the exotic tree plots, considering all types of plant species and all seasons and the number of uncommon species was relatively higher in indigenous tree plots than that in exotic tree plots. It proves that plantations of indigenous tree species are relatively better in harboring better species richness and diversity. The data provided by this study will be useful in biodiversity conservation and in appropriate selection of tree species for better plantation programs. This study suggests for preferring the indigenous species for plantation programs in forested and fertile land areas; and exotic species for that in the degraded or barren areas with strict maintenance of the natural condition.
Abstract: This study was conducted to assess the impacts of monoculture of exotic tree species on the species composition and status of undergrowths in relation to that of indigenous tree species and to provide the baseline data on the undergrowth species of the plantation forests of exotic and indigenous tree species. This study reports 116 undergrowth spec...
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Feeding Behavior and Food Preference of Red Pumpkin Beetle, Aulacophora Foveicollis
Md. Nazirul Islam Sarker,
Md. Arshad Ali,
Md. Shahidul Islam,
Md. Azizul Bari
Issue:
Volume 1, Issue 1, November 2016
Pages:
13-17
Received:
4 October 2016
Accepted:
25 October 2016
Published:
16 November 2016
DOI:
10.11648/j.ajpb.20160101.12
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Abstract: The experiment was laid out in the completely randomized design (CRD) and mean values were ranked by Duncan’s New Multiple Range Test (DMRT). Three cucurbit hosts such as sweet gourd, bottle gourd and bitter gourd were selected to conduct this research work. Host suitability was measured following force feeding and choice feeding bioassays. Under laboratory condition, feeding behavior and food preference were studied on three different host plants viz. sweet gourd, bottle gourd and bitter gourd. Food consumption by the larva and the adult was highest on sweet gourd (19600 ±7.9mm2, 1944.33±89.51 mm2) followed by bottle gourd (185.00 ± 12.29 mm2, 1657.00 ± 62.80 mm2). In case of bitter gourd the larvae died aftertwo days of release and the lowest food consumption (8.00 ± 1.53 mm2) was found by adult. The larval duration and the adult duration were highest on bottle gourd (20.67 ± 0.99 days, 43.33 ± 0.88 days) followed by sweet gourd (16.67 ± 0.99 days, 40.33 ± 0.88 days). Considering food consumption, sweet gourd appeared to be the best suitable host plant among the three different host plants for Aulacophora foveicollis. The study will help researcher, agricultural policy maker and agricultural extension worker for effective pest management, developing resistant variety and cost effective pesticides.
Abstract: The experiment was laid out in the completely randomized design (CRD) and mean values were ranked by Duncan’s New Multiple Range Test (DMRT). Three cucurbit hosts such as sweet gourd, bottle gourd and bitter gourd were selected to conduct this research work. Host suitability was measured following force feeding and choice feeding bioassays. Under l...
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Authenticity Pattern of Commercialized Emblica officinalis Using Thermal Decomposition and Elemental Studies
Vinayagasundaram Gomathinayagam,
Ramaswamy Venkataraman
Issue:
Volume 1, Issue 1, November 2016
Pages:
18-23
Received:
29 September 2016
Accepted:
9 October 2016
Published:
24 November 2016
DOI:
10.11648/j.ajpb.20160101.13
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Abstract: Tremendous raise up on medicinal plants in global market, the marketers are focusing to improve their turnover and hence the feasibility of adulteration using similar physiological and/or chemical propertied materials are being increased. To overcome these quality issues on Emblica officinalis based herbal samples, the present investigation carried out to study thermal decomposition nature and elemental compositions of its genuine sample and market available commercial samples. The TGA-DTA studies provided significant differences in the decomposition percentage of phytochemicals as 28.4% and 21.5% for genuine (AMGS) and market (AMMS) samples respectively. It implies that the beneficial components of E. officinalis are declined while commercialization of this herbal. Also the mineral compositional studies using EDAX and ICP-OES opened the micro nutritive elements shortages in commercial samples while comparing the genuine. The obtained results strongly evidenced that these decomposition and elemental studies can be helpful to scrutinize the certainty of E. officinalis samples and may other herbals too.
Abstract: Tremendous raise up on medicinal plants in global market, the marketers are focusing to improve their turnover and hence the feasibility of adulteration using similar physiological and/or chemical propertied materials are being increased. To overcome these quality issues on Emblica officinalis based herbal samples, the present investigation carried...
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Evaluation of Genetic Diversity in Different Genotypes of Soybean (Glycine max (L.) Merrill)
Md. Mostofa Mahbub,
Bir Jahangir Shirazy
Issue:
Volume 1, Issue 1, November 2016
Pages:
24-29
Received:
24 October 2016
Accepted:
4 November 2016
Published:
25 November 2016
DOI:
10.11648/j.ajpb.20160101.14
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Abstract: Genotypic variations of twenty eight soybean genotypes were evaluated in a randomized complete block design during Rabi season, 2011 at Sher-e-Bangla Agricultural University, Bangladesh. The phenotypic variance was higher than the corresponding genotypic variance for most of the characters. High heritability coupled with high genetic advance was recorded for number of branches per plant, plant height, number of seeds per plant, number of pods per plant and 100-seed weight. This indicates the effectiveness of selection to improve these five characters. Plant height, pod length, number of seeds per pod, number of pods per plant, hundred seed weight, branches per plant, and number of seeds per pod showed significant positive correlation with seed yield. Based on inter genotypic distances F-85-11347, Australia, 86017-66-6, PK-327, MTD-452, Shohag, MTD-16, YESOY-4 are important for varietal improvement of soybean genotypes. Considering genetic variability, heritability and correlation analysis, emphasis should be given on traits during phenotypic selection and inter genotypic distances for genotypic selection for developing high yielding genotypes of soybean.
Abstract: Genotypic variations of twenty eight soybean genotypes were evaluated in a randomized complete block design during Rabi season, 2011 at Sher-e-Bangla Agricultural University, Bangladesh. The phenotypic variance was higher than the corresponding genotypic variance for most of the characters. High heritability coupled with high genetic advance was re...
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Phytochemistry and Medicinal Uses of Tamarindus indica and Persea Americana as Sources of Plant Nutrients
Emmanuel Uchenna Uzukwu,
Amal Bakr Shori,
Ahmad Salihin Baba
Issue:
Volume 1, Issue 1, November 2016
Pages:
30-34
Received:
30 October 2016
Accepted:
18 November 2016
Published:
20 December 2016
DOI:
10.11648/j.ajpb.20160101.15
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Abstract: Tamarindus indica (tamarind) and Persea Americana (avocado) are tropical fruits. They are very nutritious foods contain fatty acids, vitamins, phytosterols and other phytochemicals. The extracts from fruit pulp and seeds can be used as an alternativ dietary supplement. In addition, they have been extensively used in traditional medicine for the treatment of various diseases. Thus, the present study review the phytochemicals and medicinal uses of tamarind and avocado as sources of plant nutrients.
Abstract: Tamarindus indica (tamarind) and Persea Americana (avocado) are tropical fruits. They are very nutritious foods contain fatty acids, vitamins, phytosterols and other phytochemicals. The extracts from fruit pulp and seeds can be used as an alternativ dietary supplement. In addition, they have been extensively used in traditional medicine for the tre...
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