European Journal of Botany最新文献

The Change of Chlorophyll Content and Chlorophyll Efficiency in Epipremnum aureum by Water and pH 水分和pH对金黄色鳞片叶绿素含量和叶绿素效率的影响

European Journal of Botany Pub Date : 2022-09-02 DOI: 10.24018/ejbotany.2022.1.2.12

M. Huh, Byeong-Ho Lee

{"title":"The Change of Chlorophyll Content and Chlorophyll Efficiency in Epipremnum aureum by Water and pH","authors":"M. Huh, Byeong-Ho Lee","doi":"10.24018/ejbotany.2022.1.2.12","DOIUrl":"https://doi.org/10.24018/ejbotany.2022.1.2.12","url":null,"abstract":"Epipremnum aureum (pothos) is an herbaceous species and is originated to tropical or subtropical South East Asia and Solomon islands. This study investigated the effect of excessive moisture on chlorophyll content and photosynthesis efficiency on E. aureum. The chlorophyll a, b, and total (chlorophyll a + b) contents were measured by using spectrophotometer. Fluorescence analysis for chlorophyll efficiency was measured with the PAM Chlorophyll Fluorometer. The chlorophyll content increases when moisture increases to 30%, but gradually decreases when it exceeds 40%. When the soil moisture was 80%, the values of chlorophyll a and b were 0.317 mg/g and 0.126 mg/g, respectively. This decreased the chlorophyll a, b, and total contents by 38.1%, 46.6%, and 36.8%, respectively, compared to 30% in 80% moisture. The chlorophyll content was highest at pH 6.5 of the soil. The content for chlorophylls a, b, and total were 0.471, 0.219, and 0.446 mg/g at pH 6.5, respectively. The correlation coefficients were subjected of the chlorophyll efficiency as a function of moistures. The change of chlorophyll efficiency in the quenched state (Fv) was also increased at 30% of moisture and then decreased steeply. The maximal possible value for fluorescence (Fm) was varied from 4310 (40% moisture) to 4220 (80% moisture). The Fm was varied from 4098 (pH 4.0) to 4356 (pH 6.5). The maximum quantum yield of photosynthesis (Fv/Fm) was varied from 0.798 (30% moisture) to 0.810 (60% moisture). The slope factors of Fo, Fm, Fv, and Fv/Fm for chlorophyll efficient indicators were 0.938, -0.806, 0.013, and 0.846, respectively. Excess watering decreased chlorophyll a, chl b, and chl (a + b) contents, and the chl a/b ratio in the E. aureum. The growth of this species was not as sensitive to pH compared to moisture.","PeriodicalId":407099,"journal":{"name":"European Journal of Botany","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129761533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Developmental Variations of Soyabean “Nafis” Sort Growing in Low Salinity Soils throughout the Aral Sea 在咸海低盐土壤中生长的“Nafis”大豆的发育变异

European Journal of Botany Pub Date : 2022-08-30 DOI: 10.24018/ejbotany.2022.1.1.11

Tamara O'serbaeva

引用次数: 0

Pollen Morphological Study of Some Selected Flowering Plants within Adekunle Ajasin University Main Campus, Akungba-Akoko, Ondo State, Nigeria 尼日利亚Ondo州Akungba-Akoko Adekunle Ajasin大学主校区部分开花植物花粉形态研究

European Journal of Botany Pub Date : 2022-08-10 DOI: 10.24018/ejbotany.2022.1.1.10

B. Essien, Shadrach Opeyemi Fatoyinbo

{"title":"Pollen Morphological Study of Some Selected Flowering Plants within Adekunle Ajasin University Main Campus, Akungba-Akoko, Ondo State, Nigeria","authors":"B. Essien, Shadrach Opeyemi Fatoyinbo","doi":"10.24018/ejbotany.2022.1.1.10","DOIUrl":"https://doi.org/10.24018/ejbotany.2022.1.1.10","url":null,"abstract":"On the Adekunle Ajasin University Main campus, Akungba-Akoko, Ondo State, Nigeria, the pollen morphological study of seven (7) flowering plant species representing three (3) angiospermic plant Families (Asteraceae, Euphorbiaceae, and Fabaceae sub-family Caesalpinoideae) was examined, analyzed, and studied palynologically to determine the morphological features and attributes as an aid in the identification and classification of its members within each family. Pollen grains from fresh polleniferous materials were extracted using acetolysis methods. Detailed morphological evaluations were performed at x100 magnification. Results showed similarities and differences between species in the same genera, as well as differences between species in other families. Pollen study of these species revealed several similarities between species within the same family. Aperture type, forms, pollen grain size, sculpturing pattern, pollen dimension, and exine pattern were all studied for differences and similarities. Euphorbia hirta L and Euphorbia heterophylla L, both Euphorbiaceae species, have tricolpate apertures, are prolate in shape, reticulate, and contain small to medium pollen sizes. Asteraceae has tricolporate apertures, prolate spheroidal shapes, spinate, short and long spines, and pollen sizes ranging from microscopic to enormous (Ageratum conyzoides L, Tithonia diversifolia, and Tridax procumbens). Pollen from the family Fabaceae subfamily Caesalpinioideae (which includes Caesalpinia pulcherrima (L.) Swartz. and Senna alata (Linn.) Roxb) were found to be subprolate, coarsely reticulate, tricolporate, and with pollen sizes ranging from medium to large. Aperture measures such as number and diameter, pollen size, and spine height were suggestive in all of the species studied. Because all of the species studied exhibited comparable form and symmetry, they were grouped together and assigned to the same family.","PeriodicalId":407099,"journal":{"name":"European Journal of Botany","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124211910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diversity of Fruit Tree Species in Site II, Delta State University, Abraka, Nigeria 尼日利亚阿布巴卡三角洲州立大学II站点果树物种多样性

European Journal of Botany Pub Date : 2022-08-03 DOI: 10.24018/ejbotany.2022.1.1.8

O. Agbogidi, B. Okoremu, F. Stephen

{"title":"Diversity of Fruit Tree Species in Site II, Delta State University, Abraka, Nigeria","authors":"O. Agbogidi, B. Okoremu, F. Stephen","doi":"10.24018/ejbotany.2022.1.1.8","DOIUrl":"https://doi.org/10.24018/ejbotany.2022.1.1.8","url":null,"abstract":"This study was carried out with a view of documenting the fruit tree species diversity in the site II of Delta State University, Abraka in May 2021. Sampling for fruits diversity was carried out through direct observation within the study area. Photographs were taken to aid identification; accurate taxonomic references were employed in the process of identification of the specimens collected. Percentage distribution of the fruit tree species and families encountered were documented. From the results of the study area surveyed, a total number of 20 fruit tree species belonging to 13 families were enumerated. The distribution of the fruits based on frequency of occurrence in the visible head count of fruit trees showed that the Indian almond fruit tree species (Terminalia catappa) is most dominant with approximately 90%, followed by the coconut species (Cocos nucifera) and oil palm fruit specie (Elaeis guineensis) with approximately 50%, banana (Musa acuminata), mango (Mangifera indica) and orange (Citrus sinensis) with approximately 30%, pawpaw (Carica papaya), Guava (Psidium guajava), and Lime (Citrus aurantiifolia) with approximately 15%. Others recorded very low species with 5% occurrence, respectively. The study showed that fruits are diverse in the premises of site II of Delta State University, Abraka. The species are important in the ecosystem function and services; hence activities which could lead to their depletion should be controlled.","PeriodicalId":407099,"journal":{"name":"European Journal of Botany","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132155178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Species Diversity of Macrophytes and Physicochemical Parameters of Ponds of Abraka Inland, Delta State, Nigeria 尼日利亚三角洲州阿布拉卡内陆池塘大型植物物种多样性及理化参数

European Journal of Botany Pub Date : 2022-07-29 DOI: 10.24018/ejbotany.2022.1.1.6

O. Agbogidi, A. Nwabueze, Prosper Onochie, Roseline Ukre, Oluwayomi F. Stephen

{"title":"Species Diversity of Macrophytes and Physicochemical Parameters of Ponds of Abraka Inland, Delta State, Nigeria","authors":"O. Agbogidi, A. Nwabueze, Prosper Onochie, Roseline Ukre, Oluwayomi F. Stephen","doi":"10.24018/ejbotany.2022.1.1.6","DOIUrl":"https://doi.org/10.24018/ejbotany.2022.1.1.6","url":null,"abstract":"This study assessed the species diversity of macrophytes in ponds of Abraka inland, Delta State in relation to the water physicochemical parameters. The results indicated that most of the parameters studied in the ponds between October and December 2019 including temperature, pH, total hardness, alkalinity, total dissolved solids, total suspended solids, turbidity, dissolved oxygen, biological oxygen demand, nitrate, calcium, sulphate, chloride and ammonia fell within the permissible standard of World Health Organization for both drinking water and fish production. Forty eight taxa of aquatic macrophytes were encountered. Potamogetaceae and Hydrocharitaceae families had abundant species 8 each, Cyperaceae had 6 and Nyphaeaceae, Myriophylliaceae, Lentibulariaceae, Convolulaceae, Ongraceae, Ceratophyllaceae and Ranuculaceae families were represented by one species each. The percentage occurrence of the macrophytes encountered was 54.17% (submerged), 18.75% (emergent and floating) and 8.33% (embankment) species. The study concluded that the water quality of the ponds at Abraka Inland is suitable for fish production and the growth of the aquatic macrophytes encountered. The study recommends the management of water resources like streams, rivers and ponds to ensure their sustainability and it has contributed to knowledge in the area of limnology, aquatic biology biodiversity conservation and management and public health.","PeriodicalId":407099,"journal":{"name":"European Journal of Botany","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126394106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0