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Seed Vigor Variation of agave durangensisGentry (Agavaceae)

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American Journal of Plant Sciences 2013年第11期4卷 2227-2239页

作者： Gerardo Barriada-Bernal Norma Almaraz-Abarca Tzahyri Gallardo-Velázquez Isabel Torres-Morán Yolanda Herrera-Arrieta Socorro González-Elizondo Eli Amanda Delgado-Alvarado 1Interdisciplinary Research Center for the Integral Regional Development Durango National Polytechnical Institute (CIIDIR IPN Durango) Durango México Interdisciplinary Research Center for the Integral Regional Development Durango National Polytechnical Institute (CIIDIR IPN Durango) Durango México National School of Biological Sciences National Polytechnical Institute (ENCB IPN) México DF México University Center of Biological and Agropecuary Sciences University of Guadalajara (CUCBA) Zapopan México

agave durangensis propagates basically by seeds. This species is economically important because it supports a mescal industry in Durango, Mexico. At present, its exploitation is overall by collecting plants from the wild populations. In order to reduce the negative impact of the collection in the natural populations of A. durangensis and to improve the mescal industry, it is necessary to establish plantations with selected seeds for a high vigor. In this paper, the variation in morphological features, physiological behavior of germination, and biochemical indicators of seed vigor among three natural populations of A. durangensis was assessed. Variation was found in the seed weight (0.68 to 1.15 mg/seed), seed dimensions (3.51 × 5.29 to 4.62 × 5.92 mm), germinability reduction at 15°°C related to 25°C (4% to 51%), germination rate at 25°C (44.0 to 48.5 seeds/day) and at 15°C (5.17 to 6.77 seeds/day), development reduction at 15°C related to 25°C (86.66% to 91.99%), levels of seed accumulated phenols (71 to 85 μg/seed), antioxidant potential (42% to 50% reduction of DPPH*), seed alcohol dehydrogenase activity (ADH) (180 to 1100 μmol NAD+/mg protein/min), highest ADH activity after imbibitions at 25°C (310.24 to 520.2 μmol NAD+/mg protein/min), and highest ADH activity after imbibitions at 15°C (170.74 to 440.71 μmol NAD+/mg protein/min). The variation in the seed vigor was revealed by a principal component analysis (PCA) based on all the parameters evaluated. PCA clearly discriminated among the three populations.

关键词： agave Durangensis Seed Vigor Germinability Natural Variation

Review Article: ISTR, a Retrotransposons-Based Marker to Assess Plant Genome Variability with Special Emphasis in the Genera Zeaand agave

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American Journal of Plant Sciences 2012年第12期3卷 1820-1826页

作者： Martha Isabel Torres-Morán Norma Almaraz-Abarca Martha Escoto-Delgadillo Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional Instituto Politécnico Nacional Unidad Durango Durango México Centro Universitario de Ciencias Biológicas y Agropecuarias Universidad de Guadalajara Guadalajara México

A review is presented for give information and highlights the advantage of ISTR as molecular marker which with the genome changes after manipulation or breeding intervention can be detected.

关键词： Transposable Elements Zea mays agave tequilana agave durangensis Molecular Markers

Identification of Potential Areas for Establishment of Plantations of agave lechuguillaTorr. in Coahuila, Mexico

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Open Journal of Forestry 2014年第5期4卷 520-526页

作者： David Castillo-Quiroz Oscar Ulises Martínez-Burciaga Diana Yemilet ávila-Flores Francisco Castillo-Reyes Juan David Sánchez-Chaparro National Institute of Forestry Agriculture and Livestock Research (INIFAP) Experimental Station Saltillo Saltillo Mexico

Adverse weather conditions and intensive use for fiber production have caused decline of natural populations of agave lechuguilla. By these reasons, it is important to develop a sustainable management of this specie to avoid this situation. One of the first steps is to establish forest plantations as an alternative to restore A. lechuguilla habitat and increase its range while at the same time indirectly reducing erosion rates. The aim of this study was to identify the potential areas for establishment of plantations of A. lechuguilla in the State of Coahuila, Mexico. Areas for planting establishment were selected according to multi-criteria analysis using Geographic Information System (GIS) Idrisi32 Ver 2.0 and 3.2 ***. The analysis was based on comparison of climate and soil requirements in contrast to environmental conditions of the tested area. The evaluated variables were: soil type, texture, depth, average annual temperature, annual precipitation, elevation and slope. Results derive in potential area maps, geo-referenced and their distribution by Agricultural Development District. An area of 5 million 159,273 hectares was determined with potential for establishment of A. lechuguilla forest plantations in the State of Coahuila. It was concluded that, use of GIS is a reliable tool to determine potential areas for A. lechuguilla forest plantations, where this specie has higher probability of success in survival and biomass production. This study will support programs aimed to strengthen the economy of rural producers and also recover and preserve the arid state.

关键词： agave lechuguilla Forest Plantations Natural-Fiber Geographical Information Systems

Analysis of Two Clonal Lines(Embryogenic and Non-Embryogenic)of agave fourcroydes Using AFLP and MSAP

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American Journal of Plant Sciences 2018年第4期9卷 745-762页

作者： Kelly M.Monja-Mio Adriana Quiroz-Moreno Gastón Herrera-Herrera Jorge Luis Montero-Munoz Felipe Sánchez-Teyer Manuel L.Robert Unidad de Biotecnología Centro de Investigación Científica de YucatánMéridaMéxico Centro de Investigación y Estudios Avanzados I.P.N.(Cinvestav) MéridaMéxico

Somatic embryogenesis is a very efficient way to propagate economically important plants;however, not all genotypes within a species can be propagated using this method, as a combined effect of both genetic and epigenetic mechanisms may be involved in the response. The aim of the present study was to perform a comparative analysis of the genetic differences through amplified fragment length polymorphism (AFLP) and the epigenetic differences through methylation-sensitive amplified polymorphism (MSAP) of two agave fourcroydes clonal lines, one highly embryogenic (K33) and the other non-embryogenic (K7). Genetic and epigenetic variabilities existed within each clonal line;however, the polymorphic profiles from the two marker systems allowed us to clearly distinguish the two clonal lines before somatic embryogenesis induction. During the induction, the changes detected were mainly 1) unmethylated fragments in the initial explants that were methylated during induction (methylation events) and 2) fragments with different methylation states in the initial explant that were unmethylated in some stages of the process (demethylation events). K33 showed greater dynamism in relation to methylation/demethylation events, while K7 presented the methylation events in a more constant range and at higher levels during all process.

关键词： agave Clonal Line Somatic Embryogenesis DNA Methylation

Acute Toxicity and Genotoxic Evaluation of Metlin®and Metlos®(Organic agave Fructans)

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Food and Nutrition Sciences 2013年第7期4卷 106-112页

作者： M. I. Gracia M. M. Tinoco H. M. Rivera B. F. Sanchez P. G. Tapia L. M. Altamirano R. L. Romero O. L. García Facultad de Estudios Superiores-Zaragoza Universidad Nacional Autónoma de México Mexico City Mexico. Facultad de Medicina Veterinaria y Zootecnia Universidad Nacional Autónoma de México Mexico City Mexico Facultad de Química Universidad Nacional Autónoma de México Mexico City Mexico

The aim of the study was to contribute to the information on agave soluble fibers since research has been focused on chicory fiber but not in agave products;thus we assess the acute toxicity and genotoxicity of two organic and high purity dietary soluble fibers from agave, Metlin? and Metlos?. We performed an acute toxicity assay in Hsd:ICR mice and Hsd:Wistar rats and an in vivo genotoxic test. Results showed that there are no deaths at any doses or genotoxicity, so it can be concluded that these products are non-toxic, at the administrated doses and none showed a cytotoxic, clastogenic or aneuploidic effect.

关键词： agave Fructans Inulin Fructooligosacharides

才华横溢的柔情主厨专访Liquid Laundry、Cantina agave、Boxing Cat和Sproutworks餐厅的所有者Kelley Lee女士

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旅游世界 2015年第9期 54-55页

作者：匡磊 Sproutworks

Kel l ey Lee是一位年纪轻轻的主厨,她打造了上海几家最为知名、最受欢迎的餐厅（拳击猫Boxi n g Cat Brewery、龙舌兰小馆Cantina agave和豆苗工坊Sproutworks）Kelley是一位极为要强的女商人,她在上海的10年职业生涯中开设了19家餐厅... 详细信息

Kel l ey Lee是一位年纪轻轻的主厨,她打造了上海几家最为知名、最受欢迎的餐厅（拳击猫Boxi n g Cat Brewery、龙舌兰小馆Cantina agave和豆苗工坊Sproutworks）Kelley是一位极为要强的女商人,她在上海的10年职业生涯中开设了19家餐厅。她的最新餐饮概念一Liquid Laundry是一家具有纽约风味的美食酒吧,占地900平方米,现已成为在上海度过悠闲时光的热门场地。

关键词： Boxing Cat Cantina agave Kelley Lee Liquid Laundry Sproutworks 女商人食材女性身份特色工艺女性读者

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矿山测量数据的网络化管理

辽宁工程技术大学学报（自然科学版） 2002年第3期21卷 303-305页

作者：申立群刘谊河北理工学院资源工程系测量工程教研室唐山市063009

通过对矿山测量数据相关情况的分析,论述了网络数据库系统的软、硬件构成及原理,以网络数据库实现测量数据的管理和更新,使测量人员在任何一台联网的计算机上对测量数据进行输入、查询等操作,同时也可以给其它部门提供必要的数据共享。... 详细信息

通过对矿山测量数据相关情况的分析,论述了网络数据库系统的软、硬件构成及原理,以网络数据库实现测量数据的管理和更新,使测量人员在任何一台联网的计算机上对测量数据进行输入、查询等操作,同时也可以给其它部门提供必要的数据共享。此方案适于软、硬件方案,实现测量数据管理,提高工作效率的同时,降低对用户的要求,使之很快熟练使用,降低培训费用。

关键词：矿山测量数据网络化管理数据库 agave