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February 4, 2020 04:53
RAPDIt is very essential for plant breeders to determine genetic variation for the growth of elevated yield choice. The objective of this study was to investigate the genetic diversity of 3 tamarind samples, random exploitation of enhanced polymorphic DNA (RAPD) markers. Tamarind plants were sampled in 3 environmental zones covering domestically known fruit morphotypes. On 3000 fruits and flowers, 12 morphological descriptors were evaluated. Univariate and canonical analyses carried out on morphological descriptors revealed essential similarities and verified the difference between morphotypes as viewed by indigenous people. However, the assessment of variance components showed significant differences within morphotypes, indicating a great heterogeneity within seeds historically categorized as belonging to an equal morphotype. Quantitative descriptors should, therefore, be coupled with domestically perceived qualitative characteristics (pulp style and color) in order to cause a bunch of strong morphological discrimination. The differences discovered were significantly linked to ecological factors. The size and mass of fruits and seeds are cared for with increased wetness and decreased with aridity. Results also stated that fruit mass could be an intelligent pulp output expression, although its predictive strength varied among morphotypes. Outputs from the variance component assessment recommended that if any genetic tests were not finished, germplasm assortment should be performed by testing a mild variety of forests per morphotype to ensure that a big variety of genetic diversity is captured. 10 Random modified polymorphic DNA (RAPD) primers were used to evaluate tamarind trees ' genetic variety. At the molecular stage, genotypes that were strongly linked morphologically were discovered to be unrelated. A significant amount of intra-population variation reported in the donation research that could be used in interbreeding programs to introgress the intriguing characteristic of concern with effectiveness.
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Posted February 4, 2020 04:53
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January 1, 2020 04:57
The study assessed the diversity of the indigenous tree species and also produce of a compendium of information on the various medicinal uses of the indigenous tree species and their parts in Bagale Hill Forest Reserve, Girei Local Government of Adamawa State, Nigeria. Sample plots method was used in the assessment of the indigenous tree species using the simple random sampling technique. Five plots measuring 50 m x 50 m were selected within the study site. All matured trees within the plots were identified and a total count of them was carried out. Information on ethonomedicinal uses of indigenous trees was obtained through oral interviews Focus Group Discussion (FGD). Five (5) communities out of Fifteen (15) were randomly selected for this purpose. Result of the findings indicated that 38 indigenous trees species belonging to 15 families were encountered in all the five (5) plots inventoried in the study site. Results further indicate that Hexalobus monopetalus, Piliostigma thonningii, Prosopis africana, Acacia ataxacantha and Grewia molis were common to all the sites. Annona senegalensis, Detarrium microcarpum, Terminalia glaucescens, Hymenocardia acida and Ficus sycomorus were common to four site in the study area while all other species were found in either three, two or one area of the study site. Shannon Diversity Index 2.709, 3.124, 2.614, 2.551 and 2.958 respectively for sites A to E, Simpson Diversity Index stood at 0.925, 0.9467, 0.908, 0.9091 and 0.9304, Dominance stood at 0.075, 0.05332, 0.9201, 0.09091 and 0.0696, Evenness index were 0.8835, 0.7841, 0.8028, 0.8546 and 0.7706 while Equitability Index stood at 0.9563, 0.9278, 0.9225, 0.942 and 0.9191 respectively. The various families encountered were; Anacaediaceae, Annonaceae, Balanitaceae, Bombacaceae, Burseraceae, Caesalpinioideae, Capparaceae, Combretaceae, Flacourtiaceae, Hymenocardiaceae, Mimosoideae, Moraceae, Sapotaceae, Tiliaceae and Verbenaceae. The plant parts used for medicinal purposes are roots, barks, leaves, stems, Epiphyte etc. The formulation for medication include; boiling, soaking, etc. Methods of administration include, drinking, bathing, adding to food as spices and chewing. Among the ailments treated are dysentery, diarrhea, diabetes, Tuberculosis, Meningities, Blood tonic, High blood Pressure, Worms, Typhoid Fever, Cancer, Malnutrition, Tumors, Wound Healing, Jaundice, Epilepsy and Rheumatism. It can be thus be concluded that the sharp decrease in biological tree species across the globe and the increasing economic values placed on medicinal plants, documentation on ethnobatanical knowledge is a way to understand the use of different plant species to cure various ailments and means to conserve these natural resources. From the findings of the study the following recommendations are hereby made; the local people need to be trained, encouraged and supported on how to conserve and manage the medicinal plant species, Young generation need awareness to avoid negative impacts on the medicinal plants and associated knowledge in the area, hence, documentation of the medicinal plants of the area needs to continue.
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Posted January 1, 2020 04:57
December 20, 2019 07:09
Tetraclinis articulata is an essence of great socio-economic value. The development of the resistance and survival potential of this species to sometimes extreme environmental conditions are a concern of the managers. for that, the present work is fixed as an objective to evaluate the rate of mycorrhization of thuya roots and to highlight the diversity of arbuscular mycorrhizal fungi (AMF) of thuya from two sites (Beni Souhane and Aderj) of the region of Sefrou (Middle Eastern Atlas). The results obtained showed that the thuya roots carry different structures of endomycorrhizal fungi. The frequencies of mycorrhization of the roots are of the order of 93.3% at the level of site Aderj and 80% at Beni Souhane. The mycorrhizal root intensities are respectively 45.8% and 40% for the Beni Souhane and Aderj sites. Moreover, the arbuscule contents are 26.05% in Beni Souhane and 25.52% in Aderj. The vesicle contents are 14.89% in Aderj and 21.51% in Beni Souhane. The density of endomycorrhizal spores in the rhizosphere of Thuya is 98 and 26 spores / 100 g of soil, respectively in Beni Souhane and Aderj. The identification of isolated spores allowed to note the presence of 37 species belonging to 7 genera, 7 families and 3 orders. The genus Glomus is the most abundant, with a distribution percentage of 63.5%. The species richness is 29 taxa in the site of Beni Souhane and 18 species at the level of Aderj. Besides, the thuya of the Beni Souhane site shows a better rate of mycorrhization of roots and a mycorrhizal species richness greater than that of the Aderj site. This is reflected on the state of forest formation that is coming well to Beni Souhane. It would, therefore, be valuable to develop inocula from the endomycorrhizal fungi present in the Thuya rhizosphere and proceed to controlled mycorrhization in nurseries to obtain resistant and vigorous plants.
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Posted December 20, 2019 07:09