International Journal of Science Letters最新文献_第2页

Evaluation of Different Methods Used in Morphological Examination of Canary Sperm 金丝雀精子形态检测不同方法的评价

International Journal of Science Letters Pub Date : 2022-07-24 DOI: 10.38058/ijsl.1141372

A. Özkök

{"title":"Evaluation of Different Methods Used in Morphological Examination of Canary Sperm","authors":"A. Özkök","doi":"10.38058/ijsl.1141372","DOIUrl":"https://doi.org/10.38058/ijsl.1141372","url":null,"abstract":"By determining the species-specific structure by morphological examination of the sperm, it is possible to improve some of the disadvantages related to short and long-term storage and use in artificial insemination applications. When the morphology of the canary spermatozoon is evaluated, it is seen that it has a long indented acrosome as well as a rather long flagellum. To determine the morphological structure of canary semen, morphological examination methods used in different poultry can be applied and visually evaluated with different shapes. This study aims to provide information about the comparison and usability of various staining methods used in the morphological examination of canary semen from songbirds. In this study, semen from 12 male Gloster canaries was collected to determine morphological parameters in semen. Collected semen with different morphological evaluation methods; Fixation with 5% formaldehyde, Formalin fixation and Giemsa staining, Giemsa staining, Formalin fixation, and SpermBlue staining and SpermBlue staining were evaluated. In the results of the study, while the nucleus was more prominent in Giemsa staining compared to other staining methods used for morphological evaluation, acrosome was observed in SpermBlue and Giemsa staining. On the other hand, when the sperm fixed with 5% formaldehyde solution were evaluated, it was seen that the acrosome and nucleus were indistinguishable, while the changes in the flagellum were determined much more clearly. As a result of the study, it was reported that the morphological structure of canary semen could be evaluated with all morphological examination methods used.","PeriodicalId":287513,"journal":{"name":"International Journal of Science Letters","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122327829","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

Screening for drought tolerance in cowpea at the flowering stage 豇豆开花期抗旱性筛选

International Journal of Science Letters Pub Date : 2022-05-27 DOI: 10.38058/ijsl.1111574

A. Ajayi

{"title":"Screening for drought tolerance in cowpea at the flowering stage","authors":"A. Ajayi","doi":"10.38058/ijsl.1111574","DOIUrl":"https://doi.org/10.38058/ijsl.1111574","url":null,"abstract":"Drought is one of the major threats to cowpea productivity in tropical countries, and understanding its impacts is germane in ensuring food security in a global context. The present study was established to screen some accessions of cowpea for drought tolerance at the flowering stage in pots under the controlled conditions of a screen house. High significant differences were observed among accessions for wilting and recovery traits, stomatal conductance, relative water content (RWC), terminal leaflet length (TLL) and width (TLW), stem girth, and yield parameters under drought stress. In addition, drought stress caused a significant reduction in morphological traits and RWC between the initial and the final values. Based on cluster and Principal Component Analysis (PCA), accessions were separated into different classes of tolerance. Direct selection for wilting traits, stomatal conductance, morphological traits, and recovery parameters showing high heritability (≥ 60%), GAM (≥ 20%), and PCA (≥ 0.4) will be effective. Hence, four major classes of tolerance were determined: AC03, AC08, and AC10 were highly susceptible. AC01 and AC04 were moderately susceptible. AC06, AC07, and AC09 were moderately tolerant, while AC02 and AC05 were the highly tolerant accessions. The moderately tolerant and the highly tolerant accessions showed a combination of superior resistance to wilting, superior recovery rates, and superior yield attributes. They also showed lower stomatal conductance, higher RWC, and low reduction of RWC, TLW, and stem girth under drought stress compared to the susceptible ones.","PeriodicalId":287513,"journal":{"name":"International Journal of Science Letters","volume":"157 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114734406","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

Circadian rhythm and obesity 昼夜节律与肥胖

International Journal of Science Letters Pub Date : 2022-02-07 DOI: 10.38058/ijsl.1053393

T. Şahin, Duygu Tozcu

引用次数: 2

Aspects of miRNAs as biomarkers in human diseases mirna在人类疾病中作为生物标志物的方面

International Journal of Science Letters Pub Date : 2022-01-14 DOI: 10.38058/ijsl.1050036

Rümeysa Karai̇smai̇loğlu, S. Marakli

引用次数: 1

Animal Product Consumption Habits of University Students: Suluova Vocational School 大学生动物产品消费习惯:苏洛瓦职业学校

International Journal of Science Letters Pub Date : 2022-01-11 DOI: 10.38058/ijsl.1054355

Ali Emrecan Ata, Gözde Kılınç

引用次数: 0

New additional aphid (Hemiptera: Aphidoidea: Aphididae) records for Samsun province 三善省新增蚜虫记录(半翅目:蚜虫总科:蚜虫科)

International Journal of Science Letters Pub Date : 2022-01-10 DOI: 10.38058/ijsl.1054942

Başak Akyürek

引用次数: 1

Semen collection from small breed birds and some parameters related to passerine bird semen 小品种鸟类精液采集及雀形目鸟类精液的有关参数

International Journal of Science Letters Pub Date : 2022-01-04 DOI: 10.38058/ijsl.1052705

A. Özkök

引用次数: 0

Effects of antioxidant use on semen storage in honey bees 抗氧化剂对蜜蜂精液储存的影响

International Journal of Science Letters Pub Date : 2021-12-27 DOI: 10.38058/ijsl.1045462

A. Özkök, B. Yalçın

{"title":"Effects of antioxidant use on semen storage in honey bees","authors":"A. Özkök, B. Yalçın","doi":"10.38058/ijsl.1045462","DOIUrl":"https://doi.org/10.38058/ijsl.1045462","url":null,"abstract":"Although there are many studies for the storage of semen in honey bees, the desired success has not been achieved, and more study is needed in this area. It has been reported that the percentage of bee egg-laying in queen bees fertilized with stored semen, especially in long-term storage conditions is below the expected rate despite the viability rate. The reason for this situation is that honey bee spermatozoa are negatively affected by freezing processes due to their very fragile and sensitive structure. However, due to natural mating, honey bee semen can remain healthy for years in the queen bee's spermatheca. It is known that there are many enzymatic antioxidants and special proteins in the spermatheca, as well as a suitable environment for spermatozoa. Manipulating made during the stored of honey bee semen has adverse effects on spermatozoon function and fertility. In particular, current antioxidant substances against cold shock, which are among the damages that occur during freezing of semen, are being investigated, and their protective effects on semen are determined. For this purpose, it is aimed to improve the storage conditions of honey bee semen by using substances with antioxidant properties. The purpose of this review is to give information about the use of antioxidant substances in the storage of honey bee semen.","PeriodicalId":287513,"journal":{"name":"International Journal of Science Letters","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121477013","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

Usage of encapsulated Hypericum scabrum in Ayran and determination of antioxidant, phenolic and sensory properties 包封金丝桃在艾兰中的应用及抗氧化、酚类和感官性能的测定

International Journal of Science Letters Pub Date : 2021-10-25 DOI: 10.38058/ijsl.1012913

Fadime Seyrekoğlu, H. Temiz, Ferda Eser, C. Yıldırım

引用次数: 0

Anti-diabetic Effects of Berberis cretica Extract in INS-1E Cells 小檗提取物对INS-1E细胞的抗糖尿病作用

International Journal of Science Letters Pub Date : 2021-08-24 DOI: 10.38058/ijsl.983389

Yiğit Deveci, Gamze Gunal Sadik, E. Akalın, Seda Kuşoğlu Gültekin, Ayşegül Yanik, B. Arslan

引用次数: 2