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Tuning the output of the higher plants Circadian Clock 调节高等植物生物钟的输出
Q4 PLANT SCIENCES Pub Date : 2023-09-11 DOI: 10.14719/pst.2521
None Aditi Chaudhary, None Manikantan Pappuswamy, None Amie Chakma, None Ramyashree C S, None Kruthika P, None Kruttika Subash Jan, None Medini K Deshpande, None Carol C Morris, None Joseph Kadanthottu Sebastian
The circadian clock is an ascribed regulator found in the cells of creatures, that keeps biological and behavioral processes in sync with daily environmental changes throughout two 24-hour cycles. When the circadian clock in humans malfunctions or is misaligned with environmental signals, the timing of the sleep-wake cycle is altered and several circadian rhythm sleep disorders result. Due to the Earth's rotation on its axis, predictable environmental changes are anticipated by complex processes. The combined term for these systems is the circadian clock. The circadian rhythm regulates photosynthesis, photoperiodism, and photoperiodism, making it the "primary controller of plant life." The circadian clock is made up of post-translational alterations to core oscillators, epigenetic tweaks to DNA and histones, and autoregulatory feedback loops in transcription. In addition, the circadian clock is cell-autonomous and regulates the circadian rhythms of distinct organs. Biochemical elements such as photosynthetic products, mineral nutrients, calcium ions, and hormones are used by the core oscillators to communicate with one another. Arabidopsis is utilized to identify clock-related genes that govern plant growth, germination, pollination, flowering, abiotic and biotic stress responses, and more. The biological cycles of all species, notably humans, are undoubtedly impacted by other elements, including high altitude and changing ecosystems, in addition to the ones already stated. Although it hasn't yet published any experimental or scientific evidence to support them, the implication that living things have lives does appear inescapable. Hence, the present study elaborates on the higher plants related to the circadian clock.
生物钟是一种在生物细胞中发现的被认为是调节器的生物,它使生物和行为过程在两个24小时周期内与日常环境变化保持同步。当人类的生物钟出现故障或与环境信号不一致时,睡眠-觉醒周期的时间就会改变,从而导致几种昼夜节律睡眠障碍。由于地球自转,可预测的环境变化是通过复杂的过程来预测的。这些系统的统称就是生物钟。昼夜节律调节光合作用、光周期和光周期,使其成为“植物生命的主要控制者”。生物钟由核心振荡子的翻译后改变、DNA和组蛋白的表观遗传调整以及转录中的自调节反馈回路组成。此外,生物钟是细胞自主的,调节不同器官的昼夜节律。光合产物、矿物质营养物质、钙离子和激素等生化元素被核心振荡子用来相互交流。拟南芥被用来鉴定控制植物生长、发芽、授粉、开花、非生物和生物应激反应等与时钟相关的基因。所有物种的生物周期,特别是人类,无疑受到其他因素的影响,包括高海拔和不断变化的生态系统,除了已经提到的因素。尽管还没有发表任何实验或科学证据来支持他们,但生物有生命的暗示似乎是不可避免的。因此,本研究详细阐述了与生物钟相关的高等植物。
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引用次数: 0
Phytochemical screening and Gas chromatography-mass spectrometry analysis on Ischaemumpilosum (Kleinex Willd.) 植物化学筛选及气相色谱-质谱分析[j]。
Q4 PLANT SCIENCES Pub Date : 2023-09-11 DOI: 10.14719/pst.2349
Amanulla Khan, K C More, M H Mali, Satish V Deore, M B Patil
Ischaemumpilosum (Kleinex Willd.) a weed among the grass is reported for ethno-medicinal practices for treatment of various treatments for human and domestic animals. The current work deals with phytochemical analysis in different parts of plants to find out bioactive compounds. The first-time reported results onI. pilosumreveal the significant phytochemicals by using preliminary phytochemical analysis, UV Visible spectral technique, FTIR analysis and GC-MS analysis. The preliminary phytochemical test confirms the presence of alkaloids, anthraquinone, cardiac glycosides, coumarins, flavonoids, glycosides, phenols, reducing sugars, saponins, steroids, tannin and triterpenes in Ischaemumpilosum.UV Visible spectra and FTIR gives the ranges of absorptions and functional group like Carboxylic acids (O-H) at 2956,92 cm-1, Alkanes (O-H) at 2849,89 cm-1, Aldehydes (C=O) at 1735,92 cm-1, Aromatic Rings (C=C) at 1462,95 cm-1, Alkanes (C-H) at 1377,97 cm-1, Esters (C-O) 1166,95 cm-1and Phenyl Ring (C-H) 758,97 cm-1. The GC-MS analysis related twenty-one compounds like Phenol, 4-bis (1,1-dimethylethyl), Pentanoic acid, 5-hydroxy, 2,4-di-t-butylphenyl esters, E-15-Heptadecenal, 1-Hexadecanol, n-Hexadecanoic acid, l (+)-Ascorbic acid 2,6-dihexadecanoate, Palmitic anhydride, Cycloeicosane, Cis-13-Octadecenoic acid and Triacontane from Ischaemumpilosumleaves extract.
一种草中的杂草,据报道用于治疗人类和家畜的各种治疗。目前的工作涉及植物不同部位的植物化学分析,以发现生物活性化合物。首次报道的结果是onI。通过初步植物化学分析、紫外可见光谱分析、FTIR分析和GC-MS分析等方法,揭示了其中重要的植物化学成分。初步的植物化学测试证实了Ischaemumpilosum中存在生物碱、蒽醌、心脏糖苷、香豆素、黄酮类、糖苷、酚类、还原糖、皂苷、类固醇、单宁和三萜。紫外可见光谱和红外光谱给出了羧酸(O- h)在2956,92 cm-1,烷烃(O- h)在2849,89 cm-1,醛(C=O)在1735,92 cm-1,芳环(C=C)在1462,95 cm-1,烷烃(C- h)在13777,97 cm-1,酯(C-O) 1166,95 cm-1和苯基环(C- h) 758,97 cm-1的吸收和官能团的范围。GC-MS分析了香草叶提取物中苯酚、4-二(1,1-二甲基乙基)、戊酸、5-羟基2,4-二-丁基苯基酯、e -15-十七烯醛、1-十六烷醇、n-十六烷酸、1(+)-抗坏血酸2,6-二十六烷酸、棕榈酸酐、环廿烷、顺式-13-十八烯酸和三康烷等21种化合物。
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引用次数: 0
Biological activity and phytochemistry of Dracaena angolensis Welw. ex Carrière 安哥拉龙血树的生物活性及植物化学研究。前存在的
Q4 PLANT SCIENCES Pub Date : 2023-09-11 DOI: 10.14719/pst.2498
Whika Febria Dewatisari, Nelsiani To’bungan
Dracaena angolensis Welw. ex Carriere also known as Sansevieria cylindrica from the Genus Dracaena, is a decorative plant due to its unique shape. Beside its ornamental value, it is recognized for its ability to eliminate unpleasant odours and absorb air pollutants. In various African and Asian countries, the plant’s leaves and roots have been widely used as traditional medicine to treat an assortment of ailments, including coughs, diarrhoea, hemorrhoids, chickenpox, rheumatism, gynaecological problems, as well as an antiseptic, snake bites, wound healing and refreshing beverage. Previous research showed that leaves and rhizomes of D. angolensis contain bioactive compounds such as alkaloids, saponins, cardenolides, polyphenols, steroids and abamagenin. Therefore, this review aims to provide information on the D. angolensis plant in terms of its distribution, taxonomy, phytochemical content and pharmacological potential. It presents the use of D. angolensis as traditional medicine in various regions as a candidate for natural medicine and identifies the opportunities for its development. Based on pharmacological literature, the plant has the potential as an antioxidant, anticancer, antibacterial and antitoxic agent. However, the literature on its antioxidant and anticancer potential is more extensive than its antibacterial and antitoxic properties. Further research on the pharmacological potential of this plant is necessary and its safety parameters need to be research in greater detail.
安哥拉龙血树龙涎香也被称为龙涎香属的白茅,由于其独特的形状,它是一种装饰性植物。除了它的观赏价值,它还被认为具有消除难闻气味和吸收空气污染物的能力。在许多非洲和亚洲国家,这种植物的叶子和根被广泛用作传统药物来治疗各种疾病,包括咳嗽、腹泻、痔疮、水痘、风湿病、妇科问题,以及防腐剂、蛇咬伤、伤口愈合和提神饮料。以往的研究表明,安哥拉山竹的叶和根茎中含有生物碱、皂苷、核桃内酯、多酚、类固醇和阿玛玛肽等生物活性物质。因此,本文旨在对其分布、分类、植物化学成分和药理潜力等方面进行综述。它介绍了安哥拉犀草作为传统药物在不同地区作为天然药物的候选药物的使用,并确定了其发展的机会。根据药理学文献,该植物具有抗氧化、抗癌、抗菌和抗毒性的潜力。然而,关于其抗氧化和抗癌潜力的文献比其抗菌和抗毒性更广泛。对该植物的药理潜力进行进一步的研究是必要的,其安全参数需要进行更详细的研究。
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引用次数: 0
A systematic review on biological and medicinal properties of Ehretia rigida (Thunb.) Druce (Ehretiaceae) in Southern Africa 硬体Ehretia rigida (Thunb.)生物学和医学特性的系统综述产于非洲南部的芦苇科植物
Q4 PLANT SCIENCES Pub Date : 2023-09-11 DOI: 10.14719/pst.2359
None Alfred Maroyi
Wild plants are widely utilized as important sources of traditional medicines and food. Ehretia rigida (Thunb.) is one such plant species that occurs naturally in southern Africa and different parts of the plant have nutritional, cultural, and pharmaceutical importance. The current study is aimed at providing information on the medicinal and biological properties of E. rigida. The current review assessed the existing literature on the biological properties and medicinal uses of the plant. The study revealed that the leaves, twigs, stems, bark and roots of the plant are mainly used for ritual purposes, as traditional medicines for infertility, headache, abdominal pains, chest pains, pain, skin cuts, sprained joints, newborn baby infections, a good-luck charm, fire-making and rain-making ceremonies, warding-off enemies and dangerous animals and as ethnoveterinary medicine. The phytochemical evaluation of the species showed that it is characterized by allantoin, ?-amyrin, ?-amyrin, ?avonoids, phenolics, saponins, tannins, ?-sitosterol and 1-triacontanol. The pharmacological properties of different crude extracts demonstrated anticholinesterase inhibition, antifungal, antibacterial, antidiabetic, anti-inflammatory, and antioxidant properties. This review highlights the pharmaceutical and health benefits of E. rigida in different countries of southern Africa. Therefore, detailed ethnopharmacological evaluations of the species focusing on phytochemistry, pharmacological properties, toxicological evaluations, and in vivo and clinical research investigations are recommended.
野生植物被广泛用作传统药物和食品的重要来源。硬体Ehretia rigida (Thunb.)就是这样一种自然生长在非洲南部的植物,这种植物的不同部分具有营养、文化和药用价值。本研究的目的是提供硬芽孢杆菌的药用和生物学特性的信息。本文对该植物的生物学特性和药用价值进行了综述。研究表明,这种植物的叶子、树枝、茎、树皮和根主要用于仪式目的,作为治疗不孕、头痛、腹痛、胸痛、疼痛、皮肤割伤、扭伤关节、新生儿感染、好运符咒、生火和造雨仪式、抵御敌人和危险动物的传统药物,以及作为民族兽药。植物化学鉴定表明,其主要成分为尿囊素、-amyrin、-amyrin、- avonoids、酚类、皂苷、单宁、-谷甾醇和-三康醇。不同粗提物的药理特性显示出抗胆碱酯酶抑制、抗真菌、抗菌、抗糖尿病、抗炎和抗氧化的特性。这篇综述强调了硬芽孢杆菌在南部非洲不同国家的药物和健康益处。因此,建议对该物种进行详细的民族药理学评估,重点是植物化学,药理学性质,毒理学评估以及体内和临床研究调查。
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引用次数: 0
A taxonomic review of the genus Ocimum L. (Ocimeae, Lamiaceae) 酢浆草属(酢浆草科,酢浆草科)的分类学研究
Q4 PLANT SCIENCES Pub Date : 2023-09-10 DOI: 10.14719/pst.2552
None Mamita Kalita, Nilakshee Devi
The plants of the genus Ocimum L. are rejuvenating herbs due to their aesthetic and magnanimous healing nature. Ocimum L. is a pivot of modern research such as phytochemistry, molecular and medicinal biology. However, there needs to be more taxonomic interpretation and identification of the genus, summing up the need for our study. The morphological discrepancies and nomenclature of Ocimum L. are jumbled up, the same species has been named multiple times by multiple authors. It culminates in erroneous evaluation for taxonomy-based research. Our indignation highlights the taxonomic alterations and modifications that Ocimum L. has undergone since primeval period. The genus's classical to the modern taxonomic transition has not been studied hitherto. The aim is to provide precise information on the antecedent and contemporary stature of Ocimum L. The present study attempts to provide taxonomic clarity for a highly economic genus in order to enhance the commercial perspective and efficiency of selective breeding practices. The present study emphasizes identifying samples with their type, protologue, and herbarium specimen and extricate between ecotype, morphotype, and chemotypes. Molecular taxonomy can provide better insights and transparency. But for a better exposition, such studies must revolve around correctly identified species. The selection of representatives from different populations of the same species can help understand the consistency of vegetative and reproductive characteristics. In this review, few corrections have been provided for misidentified or mistaken species. The species with incorrect nomenclature has been identified and corrections have been suggested. For a better understanding, habit photographs of Indian Ocimum L. have been furnished and morphological features (vegetative and reproductive) for proper diagnosis and correlation has been provided. Specimen examination either through physical or digital herbaria is an obligatory criterion for an error-free taxonomic inquest. Our findings will help to achieve accuracy while interpreting the genus and its species. The retrospection will aid in floristic, biodiversity, taxonomic, phylogenetic, biochemistry and molecular systematic related works. The observations will apprehend the existing gap concerning the taxonomy of Ocimum L.
该属植物是振兴草本植物,由于他们的审美和宽宏大量的愈合性质。酢浆草是植物化学、分子生物学和药物生物学等现代研究的一个支点。但是,还需要对该属进行更多的分类解释和鉴定,总结我们的研究需要。其形态差异和命名混淆,同一种被不同作者多次命名。它最终导致了对基于分类学的研究的错误评价。我们的愤慨突出表明,自原始时期以来,虎耳草在分类上发生了变化和修改。该属从古典到现代的分类转变至今尚未被研究过。本研究旨在为一种高度经济的属提供清晰的分类信息,以提高商业前景和选择育种的效率。本研究强调对标本的类型、原生生物和标本馆标本的鉴别,以及对生态型、形态型和化学型的鉴别。分子分类学可以提供更好的见解和透明度。但为了更好地阐述,这些研究必须围绕正确识别的物种展开。从同一物种的不同居群中选择代表可以帮助了解营养和生殖特征的一致性。在这篇综述中,很少有对错误鉴定或错误种类的更正。对命名法不正确的种进行了鉴定,并提出了修正建议。为了更好的了解,我们提供了印第安印第安人的习性照片,并提供了形态学特征(营养和生殖),以便进行正确的诊断和对比。标本检查无论是通过物理或数字植物标本室是一个强制性的标准,一个错误的分类调查。我们的发现将有助于在解释属及其物种时达到准确性。回顾将有助于植物区系学、生物多样性、分类学、系统发育、生物化学和分子系统相关的工作。这些观察结果将使人们理解关于虎耳草分类学的现有差距。
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引用次数: 0
Exploring Traditional Uses, Phytochemical Composition, and Antimicrobial Potential of Latex-Producing Plants in the Euphorbia Genus: A Comprehensive Review 大戟属产胶植物的传统用途、植物化学成分和抗菌潜力的研究综述
Q4 PLANT SCIENCES Pub Date : 2023-09-10 DOI: 10.14719/pst.2352
Ananya Mishra, Sagarika Parida
The Euphorbia genus, ranking as the third largest among angiosperm plants, encompasses nearly 2026 species. The latex derived from these plants contains irritants to the skin and finds application in wart removal. Additionally, it serves as a source for crafting fish and arrow poisons. Literature substantiates the utilization of these plants in the treatment of diverse ailments including menstrual issues, diarrhea, colds, fevers, as well as an array of skin conditions such as warts, sores, boils, dermatitis, psoriasis, eczema, and sunburn. Moreover, they contribute to wound healing. Certain species within the Euphorbia genus, classified under Euphorbiaceae, exhibit properties as anti-herpetic and antitumor agents against polio, rhinoviruses, and coxsackievirus. In the realm of Ayurveda, specific plant latex from select species is employed in the preparation of surgical threads for Kshara sutra therapy. This Ayurvedic approach serves as a minimally invasive para-surgical procedure in the management of anorectal piles or fistula. Remarkably, various di- and tri-terpenes obtained from the latex exhibit robust antimicrobial activity against both bacterial and fungal strains. Moreover, the di-terpenoids sourced from Euphorbia species display anti-inflammatory properties along with noteworthy cytotoxic and anticancer activities. The focal objective of this review is to present a contemporary overview encompassing traditional applications, phytochemical constituents, and the antimicrobial potential of ten latex-producing plants within the Euphorbia genus.
大戟属,在被子植物中排名第三,包括近2026种。从这些植物中提取的乳胶含有对皮肤的刺激物,可以用于去除疣。此外,它还可以作为制作鱼毒和箭毒的原料。文献证实了这些植物在治疗各种疾病中的应用,包括月经问题、腹泻、感冒、发烧,以及一系列皮肤状况,如疣、疮、疮、皮炎、牛皮癣、湿疹和晒伤。此外,它们有助于伤口愈合。大戟属的某些物种,被归类为大戟科,具有抗疱疹和抗肿瘤的特性,可以治疗小儿麻痹症、鼻病毒和柯萨奇病毒。在阿育吠陀的领域,特定的植物乳胶从选择的物种被用于准备手术线为Kshara经治疗。这种阿育吠陀方法是一种微创的手术旁处理肛肠堆或瘘管的方法。值得注意的是,从乳胶中获得的各种二萜和三萜对细菌和真菌菌株都具有强大的抗菌活性。此外,从大戟属植物中提取的二萜类化合物显示出抗炎特性以及显著的细胞毒性和抗癌活性。本综述的主要目的是介绍大戟属植物的传统应用、植物化学成分和抗菌潜力。
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引用次数: 0
Herbal Allies for Rheumatoid Arthritis: A Comprehensive Review of Natural Products 类风湿性关节炎的草药盟友:天然产品的综合综述
IF 0.9 Q4 PLANT SCIENCES Pub Date : 2023-09-05 DOI: 10.14719/pst.2569
Ankita Singh, Madhu Kaushik, Swati Sinha, Ravindra Kumar Kachhap Oraon, Narotam Sharma, Indra Rautela
Rheumatoid arthritis (RA) is a chronic autoimmune disease affecting primarily the joints, producing discomfort, inflammation, and potentially damaging joint destruction. Rheumatoid arthritis affects people all around the world, and its prevalence and impact differ by place. The World Health Organisation (WHO) estimates that 0.5% to 1% of the global population has rheumatoid arthritis. To decrease the progression of rheumatoid arthritis, disease-modifying anti-rheumatic medications (DMARDs) such as methotrexate and sulfasalazine are used. TNF inhibitors and IL-6 inhibitors are two examples of biologic DMARDs that target specific immune system components. Nonsteroidal anti-inflammatory drugs (NSAIDs) and analgesics help manage pain and inflammation while corticosteroids provide short-term relief during flares. Treatment strategies are tailored to the individual, and talking with a healthcare expert is essential for effective management. Herbal therapies are regarded to offer an advantage over synthetic pharmaceuticals for the treatment of rheumatoid arthritis due to their natural approach, potential symptom relief, holistic approach to health, and individualised therapy possibilities. However, scientific data supporting their effectiveness is sparse and variable, and their quality and safety can vary. Before adopting herbal therapies as part of a treatment plan, it is critical to check with a healthcare expert. Because of their natural chemicals with anti-inflammatory and analgesic characteristics, medicinal herbs may aid rheumatoid arthritis. However, further research is required to determine their efficacy, safety, and appropriate application.
类风湿性关节炎(RA)是一种慢性自身免疫性疾病,主要影响关节,产生不适,炎症,并潜在地破坏关节。类风湿性关节炎影响世界各地的人们,其患病率和影响因地而异。世界卫生组织(WHO)估计全球有0.5%到1%的人口患有类风湿性关节炎。为了减少类风湿关节炎的进展,疾病改善抗风湿药物(DMARDs),如甲氨蝶呤和磺胺氮嗪被使用。TNF抑制剂和IL-6抑制剂是针对特定免疫系统成分的生物dmard的两个例子。非甾体抗炎药(NSAIDs)和镇痛药有助于控制疼痛和炎症,而皮质类固醇在发作期间提供短期缓解。治疗策略是为个人量身定制的,与医疗保健专家交谈是有效管理的必要条件。草药疗法被认为比合成药物治疗类风湿关节炎更有优势,因为它们的自然方法、潜在的症状缓解、健康的整体方法和个性化治疗的可能性。然而,支持其有效性的科学数据稀少且多变,其质量和安全性也可能有所不同。在采用草药疗法作为治疗计划的一部分之前,向医疗保健专家咨询是至关重要的。由于其天然化学物质具有抗炎和镇痛的特点,草药可能有助于类风湿关节炎。然而,需要进一步的研究来确定它们的有效性、安全性和适当的应用。
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引用次数: 0
Evaluation of the quantitative and qualitative characteristics of sugar beet cultivars in different sowing times and transplanting and direct-seeding systems 甜菜品种在不同播期、移栽和直播制度下的数量和质量特性评价
IF 0.9 Q4 PLANT SCIENCES Pub Date : 2023-09-02 DOI: 10.14719/pst.2501
Shahrokh Pahlavanian Miandoab, M. R. Dadashi, Touraj Mir Mahmoudi, Asiyeh Siahmargue, Hossen Adjam Norouzi
To study the characteristics of sugar beet cultivars in transplanting and direct-seeding systems on three different sowing times (March 29, April 8, and April 18), a split plot experiment based on randomized complete blocks in three replications was carried out in Miandoab and Bokan regions, Northwest of Iran in 2016. The results showed that the highest nitrogen content was observed between the two test locations in the Bukan area. Results showed that the low root sodium, alkalinity, and molasses content was recorded for transplanting system. The minimum content of root sodium, nitrogen, and molasses sugar was observed in the plants sown on March 29. The Dorotea cultivar showed the highest root yield, sugar yield, and white sugar yield and the lowest root nitrogen and molasses sugar content compared to Isabella and Ekbatan. The highest white sugar content, coefficient of sugar extraction, sugar yield, root yield, and white sugar yield were recorded in the transplanting system with the sowing time of March 29; however, the highest content of root potassium and sugar content was observed in the transplanting system sown on April 18. The highest root yield was observed in the Dorotea cultivar, with a sowing time of March 29. Among the locations in the cultivar and planting system interaction treatments, the highest sugar content was found in the Bukan area's Dorotea cultivar in the transplanting system. Finally, the highest sugar yield was related to the transplanting system on March 29 in the Bukan area. It can be stated that an early sowing time (March 29), transplanting, and Dorotea variety were identified as the most appropriate treatments to improve the economic traits of sugar beet.
为了研究甜菜品种在3个不同播种时间(3月29日、4月8日和4月18日)的移栽和直播系统中的特性,2016年在伊朗西北部的棉多布和博坎地区进行了基于随机完全区块的三次重复的裂区试验。结果表明,布坎地区的两个测试地点之间的氮含量最高。结果表明,插秧系统根系钠、碱度和糖蜜含量均较低。3月29日播种的植物根系钠、氮和糖蜜含量最低。与Isabella和Ekbatan相比,Dorotea品种表现出最高的根产量、糖产量和白糖产量,以及最低的根氮和糖蜜含量。播种时间为3月29日,移栽系统的白砂糖含量、采糖系数、产糖量、根系产量和白砂糖产量最高;然而,在4月18日播种的移栽系统中,根系钾和糖含量最高。Dorotea品种的根系产量最高,播种时间为3月29日。在品种和种植系统相互作用处理的位置中,在移植系统中,布坎地区的Dorotea品种的含糖量最高。最后,最高的糖产量与3月29日在布坎地区的移植系统有关。可以说,早播(3月29日)、移栽和Dorotea品种被认为是改善甜菜经济性状的最合适处理。
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引用次数: 0
Strategies for Successful Acclimatization and Hardening of In Vitro Regenerated Plants: Challenges and Innovations in Micropropagation Techniques 体外再生植株成功驯化和硬化的策略:微繁技术的挑战与创新
IF 0.9 Q4 PLANT SCIENCES Pub Date : 2023-09-02 DOI: 10.14719/pst.2376
Nishesh Sharma, Nishant Kumar, Jerin James, Sonika Kalia, Shivani Joshi
The micropropagation technique serves as an effective approach for conserving and propagating numerous plant species. Challenges to its success encompass explant selection, media composition, hormone concentration, microbial contamination, incubation conditions, and photoperiod. Beyond these factors, the veracity of tissue culture hinges on successful acclimatization of in vitro regenerated plants to their natural surroundings. Tissue culture-derived plants exhibit characteristic variations like altered nutrition, reduced cuticular wax, non-functional stomata, etc. During transition to natural conditions, a significant portion of micropropagated plants face survival challenges. Studies propose gradual acclimatization processes for smooth adjustment. Ex vitro rooting is advocated for economic, simple, and enhanced survival outcomes. Hydroponics, photoautotrophic acclimatization, and biotization strategies also improve post-transplantation survival. This study evaluates diverse strategies for achieving successful acclimatization of in vitro regenerated plants.
微繁殖技术是保护和繁殖多种植物的有效途径。其成功的挑战包括外植体的选择、培养基组成、激素浓度、微生物污染、培养条件和光周期。除了这些因素之外,组织培养的准确性还取决于体外再生植物对自然环境的成功适应。组织培养衍生的植物表现出特征性变化,如营养改变、角质蜡减少、气孔无功能等。在向自然条件过渡的过程中,相当一部分微繁殖植物面临生存挑战。研究提出了循序渐进的适应过程,以实现平稳的适应。提倡离体生根以获得经济、简单和提高的生存结果。水培、光自养驯化和生物化策略也能提高移植后的存活率。本研究评估了实现体外再生植物成功驯化的多种策略。
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引用次数: 2
Application of defoliants alters leaf growth and gas exchange parameters for cotton defoliation 脱叶剂的施用改变了棉花的叶片生长和气体交换参数
IF 0.9 Q4 PLANT SCIENCES Pub Date : 2023-08-31 DOI: 10.14719/pst.2383
Perumal Chandrasekaran, Subiramaniyan Ashok, Ramasamy Ajaykumar, N. Ashokkumar, R. Sathya, Sivasubramanian Karpagavalli, Arumugam Rajeshkumar, Sivalingam Ramadass
The goal of the current study was to determine how different chemical defoliants and application timing affected defoliation in cotton variety CO 17. The studies were conducted using a split-plot design with three applications at three different times as the main plot and seven defoliants as the subplot. Thidiazuron + Diuron (0.03%) defoliant reduced the gas exchange parameters, photosynthetic rate, transpiration rate and stomatal conductance by reducing plant growth parameters, leaf area, leaf area index, specific leaf weight which significantly increased the defoliation percentage. The negative correlation of cotton growth and gas exchange parameters with defoliation percentage was observed in correlation studies. In conclusion, Thidiazuron + Diuron (0.03%) defoliant was found to be superior in action for improving leaf defoliation and its associated parameters. And also it may be a cost-effective cotton defoliant for aiding the mechanical picking of cotton bolls.
本研究的目的是确定不同的化学落叶剂和施用时间如何影响棉花品种CO17的落叶。研究采用分块设计,以三个不同时间的三次施用为主要地块,以七种落叶剂为次要地块。Thidiazuron+Diuron(0.03%)落叶剂通过降低植物生长参数、叶面积、叶面积指数、比叶重,降低了气体交换参数、光合速率、蒸腾速率和气孔导度,显著提高了落叶率。相关研究表明,棉花生长和气体交换参数与落叶率呈负相关。综上所述,Thidiazuron+Diuron(0.03%)落叶剂在改善叶片落叶及其相关参数方面具有较好的作用。此外,它可能是一种成本效益高的棉花落叶剂,有助于机械采摘棉铃。
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Plant Science Today
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