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Rice Seedling Nursery: The new approach to develop local small enterprises 水稻苗圃:发展地方小企业的新途径
Pub Date : 2022-12-01 DOI: 10.4067/s0718-34292022000400113
Seyyed Ali Ghoreyshi, S. Firouzi, Soroush Marzban, Mahyar RadGoudarzi
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引用次数: 0
Fruticultura de hoja caduca en la Pampa del Tamarugal
Pub Date : 2022-03-01 DOI: 10.4067/s0718-34292022000100003
Ingrid Poblete Quezada
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引用次数: 0
Proyección de los impactos del cambio climático en el caudal de la cuenca del río Lurín-Perú, bajo escenarios del CMIP5-RCP 在CMIP5-RCP情景下,预测气候变化对lorin - peru河流域流量的影响
Pub Date : 2022-03-01 DOI: 10.4067/s0718-34292022000100101
Kátherine Jeannette Osorio Díaz, Lia Ramos Fernandez, Teresa Velásquez Bejarano
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引用次数: 0
In vitro anther culture of rocoto (Capsicum pubescens Ruiz & Pav.) 辣椒的离体花药培养
Pub Date : 2022-03-01 DOI: 10.4067/s0718-34292022000100115
Ángel David Hernández-Amasifuen, Alexandra Jherina Pineda-Lázaro, Hermila Belba Díaz-Pillasca
The rocoto ( Capsicum pubescens Ruiz & Pav.) is a crop of great importance in Peru because it is in great demand within the national gastronomy. This crop has no defined varieties or cultivars, but it is represented by two significant genotypes: Serrano and Monte. It is necessary to obtain homozygous lines to define a cultivar; for this reason, the alternative of using biotechnological tools through another culture under in vitro conditions is presented to obtain homozygous individuals. Nevertheless, the response of another culture depends on each genotype understudy, and it is necessary to establish a basis for the establishment and generation of somatic embryos from rocoto anthers. For the reasons described above, the present research aimed to induce somatic embryos from in vitro culture of rocoto anthers. Flower buds of the Serrano genotype were used to determine the flower bud stage with the highest percentage of uninucleated microspores and determine the treatment with the highest percentage of disinfection in rocoto flower buds, and determine the treatment that allows the induction of somatic embryos from rocoto anthers. The IR4 group of flower buds presented the highest percentage of microspores in the uninucleate stage with 81.3%. Treatment D4 achieved the highest disinfection of flower buds with 89.01%. A total of 18.27% of anthers with somatic embryo formation were obtained using treatment T2.
在秘鲁,辣椒(Capsicum pubescens Ruiz & Pav.)是一种非常重要的作物,因为它在国家美食中需求量很大。这种作物没有确定的品种或栽培品种,但它有两个重要的基因型:塞拉诺和蒙特。确定一个品种需要获得纯合子系;因此,在体外条件下使用生物技术工具通过另一种培养来获得纯合子个体的替代方法被提出。然而,另一种培养的反应取决于所研究的每个基因型,因此有必要为从花药中建立和产生体细胞胚胎奠定基础。基于上述原因,本研究的目的是通过离体培养诱导成体细胞胚胎。利用Serrano基因型花蕾确定了无核小孢子率最高的花蕾期,确定了洛可托花蕾消毒率最高的处理方式,确定了洛可托花药诱导体细胞胚的处理方式。IR4组花芽单核期小孢子率最高,达81.3%。处理D4对花蕾的去除率最高,达89.01%。T2处理获得体胚形成花药的比例为18.27%。
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引用次数: 1
Antropización del paisaje y diversidad de especies de aves: el caso de los valles-oasis del Desierto de Atacama 景观的人为化和鸟类物种的多样性:以阿塔卡马沙漠的山谷绿洲为例
Pub Date : 2022-03-01 DOI: 10.4067/s0718-34292022000100049
M. Escobar, Catalina B. Muñoz-Pacheco, Nélida R. Villaseñor
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引用次数: 0
Comportamiento agronómico y calidad de kiwicha (Amaranthus caudatus L.) en función del cultivar y la dosis de fertilización 猕猴桃(Amaranthus caudatus L.)的农艺性状和品质与品种和施肥剂量的关系
Pub Date : 2022-03-01 DOI: 10.4067/s0718-34292022000100087
Rhodes Leopoldo Mejía-Valvas, Hugo Mendoza-Vilcahuamán, L. Gómez-Pando, R. Pinedo-Taco
The kiwicha cultivation ( Amaranthus caudatus L.) in Peru is a food security crop for rural Andean populations; however, the low use of fertilizers significantly reduces the yields and profitability of native and improved cultivars. The aimed of the research was to determine the agronomic behavior and the quality the kiwicha grain in improved and native varieties at different fertilization rates. The evaluated treatments consisted of three kiwicha cultivars (Oscar Blanco, Centenario and Caracino) and three levels of NPK fertilization (18-46-30; 100-80-60; 120-100-80), established in complete block design at the random with 3 x 3 factorial arrangement and four replications. The agronomic variables analyzed were grain yield, plant height, flowering time, maturation stage, and as quality components, weight of 1000 grains and protein content. With the 120-100-80 dose of NPK, regardless of the cultivars, the highest yield was observed (2235.12 kg ha –1 ); while, with local cultivar Caracino the highest yield was verified (2208.33 kg ha –1 ); likewise, the highest protein content with 15.39% was found with the cultivar Oscar blanco. Under the soil conditions and agroclimatic conditions of the study area, the local Caracino cultivar with the fertilization dose 120-100-80 reached the highest yield with acceptable levels of grain quality.
秘鲁猕猴桃种植(Amaranthus caudatus L.)是安第斯山脉农村人口的粮食安全作物;然而,肥料的低使用量大大降低了本地和改良品种的产量和盈利能力。研究了猕猴桃良种和乡土品种在不同施肥量下的农艺性状和籽粒品质。3个猕猴桃品种(Oscar Blanco, Centenario和Caracino)和3个氮磷钾施肥水平(18-46-30;100-80-60;120-100-80),采用3 × 3阶乘随机设计,4个重复。分析的农艺变量为籽粒产量、株高、花期、成熟期以及品质组分、千粒重和蛋白质含量。氮磷钾用量为120 ~ 100 ~ 80时,各品种产量最高(2235.12 kg ha -1);而本地品种Caracino的产量最高(2208.33 kg ha -1);白奥斯卡的蛋白质含量最高,为15.39%。在研究区土壤条件和农业气候条件下,施肥剂量为120 ~ 100 ~ 80的当地Caracino品种产量最高,籽粒品质可接受。
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引用次数: 0
Análisis de Correspondencia Múltiple de Sustentabilidad en Unidades Productoras de Tarwi (Lupinus mutabilis Sweet) en el valle del Mantaro, Perú 秘鲁Mantaro山谷Tarwi (Lupinus mutabilis Sweet)生产单位可持续性的多重对应分析
Pub Date : 2022-03-01 DOI: 10.4067/s0718-34292022000100015
Vidal César Vidal Aquino Zacarías, Narcizo Isidoro Gómez Villanes, Rolando Porta Chupurgo, Jorge Jiménez-Dávalos
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引用次数: 0
Evaluación del cosahui del sur (Krameria erecta Willd) en condiciones silvestres 野生条件下南科萨族(Krameria erecta wild)的评价
Pub Date : 2022-03-01 DOI: 10.4067/s0718-34292022000100067
Diana M. Mc Caughey Espinoza, Álvaro Reyes Olivas, Gloria Irma Ayala Astorga, Gabriel Antonio Lugo García, Andrés Ochoa Meza, Antonio Pacheco Olvera
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引用次数: 0
Efficacy of Telenomuspodisi Ashmead, 1893 (Hymenoptera: Platygastridae) release for the control of Euschistus heros (Fabricius, 1794) (Hemiptera: Pentatomidae) eggs in soybean, in Brazil 寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主寄主
Pub Date : 2022-03-01 DOI: 10.4067/s0718-34292022000100077
José Carlos de Almeida Pernambuco Filho, Wellington S.M. Almeida, Joanina Gladenucci, B. Zachrisson, R. C. de Oliveira
This study aimed to assess the effectiveness of releases of different amounts of Telenomus podisi for the control of Euchistus heros in soybean crops. In addition, productivity was determined between treatments. The experiments were conducted in commercial areas of soybean production during the 2017/2018 crop season. The experiments were installed in three experimental areas in different locations of São Paulo state, Brazil; Pardinho (Farm Santa Fe), Tatuí (Farm Dos Lagos), and Angatuba (Farm Santa Irene). The experimental design was that of random blocks with five treatments and five repetitions. The statistical analysis of the experimental data applied was of variance homogeneity (Hartley Test), variance analysis (ANOVA), and Tukey’s average discrimination test, at 5% of probability. The treatments evaluated were: T1-2,000 eggs/ha; T2-3,500 eggs/ha; T3-5,000 eggs/ ha; T4-6,500 eggs/ha; T5-Control (Without T. podisi release). The release of adult parasitoids was carried out manually in the center of the plots. The parasitoid release interval was made from the presence of two nymphs or average adults of E. heros per linear meter, considering the end of the vegetative phase and physiological maturation. The sampling of nymphs and adults of E. heros were performed at weekly intervals (1, 7, 14, and 21 days) prior to the releases of T. podisi. The reduction in the number of nymphs and adults of E. heros, following the release of parasitoids was assessed. Additionally, productivity between treatments was evaluated. The release of 6,500 adults of T. podisi significantly reduced the number of nymphs and adults of E. heros and showed to be more effective regarding other treatments. The productivity between the treatments evaluated did not show significant statistical differences.
本研究旨在评价不同放放量的足端绦虫在大豆作物中的防治效果。此外,还测定了不同处理间的产量。试验于2017/2018作物季在大豆生产的商业区域进行。实验安装在巴西圣保罗州不同地点的三个实验区;Pardinho (Santa Fe农场),Tatuí (Dos Lagos农场)和Angatuba (Santa Irene农场)。实验设计为随机分组,5个处理,5次重复。统计分析采用方差齐性(Hartley检验)、方差分析(ANOVA)和Tukey平均判别检验,概率为5%。评价处理为:t1 ~ 2000个/ha;t2 - 3500鸡蛋/公顷;t3 - 5000个蛋/公顷;t4 - 6500鸡蛋/公顷;t5 -控制(无波氏弓形虫释放)。在小区中心人工放生成虫。寄生蜂的释放间隔以每线形米有2个雌虫或平均成虫计算,考虑到营养期结束和生理成熟。每隔一周(1天、7天、14天和21天),在放生绿足姬鼠前采集雌虫和成虫。研究了释放拟寄生物后雄蜂若虫和成虫数量的减少情况。此外,还评估了处理间的生产率。释放6500只成虫后,大大减少了雄田鼠若虫和成虫的数量,与其他处理相比效果更好。不同处理间的生产力差异无统计学意义。
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引用次数: 0
Arthropods associated to tree canopies in the edges of a forest fragment in the Cerrado of Minas Gerais, Brazil 在巴西米纳斯吉拉斯州塞拉多的森林碎片边缘与树冠相关的节肢动物
Pub Date : 2022-03-01 DOI: 10.4067/s0718-34292022000100039
Ana Tereza Hesse Bispo, Joao Paulo Barbosa Santos, Jaqueline Da Silva Souza, Kelly de Almeida Silva, J. Boscardin
The Cerrado biome occupies 22% of Brazil’s land area and has one of the highest levels of endemism of flora and fauna species of any biome. As components of the fauna, the arthropods stand out as they perform several functions within ecosystems and serve as bioindicators of environmental quality. This work aimed to evaluate the association of the arthropod fauna with tree canopies in an area surrounding a fragment of a legal reserve adjacent to a coffee plantation. The study was conducted at the Juliana farm (18º43’29”S; 47º29’55”W), located in the municipality of Monte Carmelo, Minas Gerais, Brazil. The canopy net methodology was used, in which a net bag was wrapped around the branches and shaken five times, covering the four cardinal directions in the crowns of 20 trees. The contents of the net were placed in plastic bags, sealed, identified, and taken to the laboratory. Twelve monthly collections were performed between August 2018 and July 2019, for a total of 240 samples. The collected specimens were identified in taxonomic groups using a taxonomic key. During the sampling period, 804 individuals were collected, belonging to 56 taxa of the classes Arachnida and Insecta. Xylopia aromatica (Annonaceae) was the most representative tree species, with 50% of the sampled taxa found in its branches. The order Araneae and the families Asilidae and Tephritidae (Diptera) and Formicidae (Hymenoptera) were the predominant taxa in the faunistic analysis. As potential predators, Araneae and Formicidae were the most important groups and were found in all tree species sampled. The families Braconidae and Ichneumonidae (Hymenoptera) were the most common among the parasitoids. We conclude that the legal reserve and permanent preservation areas maintain populations of tree species that can generate a survival site for natural enemies and other canopy arthropods.
塞拉多生物群落占巴西陆地面积的22%,是所有生物群落中动植物物种特有程度最高的地区之一。作为动物群的组成部分,节肢动物在生态系统中发挥着多种功能,并作为环境质量的生物指标而引人注目。这项工作的目的是评估节肢动物区系与咖啡种植园附近的法定保护区的树冠之间的关系。该研究在Juliana农场(18º43 ' 29 " S;47º29 ' 55 " W),位于巴西米纳斯吉拉斯州蒙特卡梅洛市。采用树冠网法,将一个网袋缠绕在树枝上,摇五次,覆盖20棵树冠的四个主要方向。蚊帐的内容物被放在塑料袋里,密封,鉴定,并带到实验室。在2018年8月至2019年7月期间进行了12个月的收集,共收集了240份样本。用分类键对采集的标本进行分类类群鉴定。在此期间,共采集到804个个体,隶属于蛛形纲和昆虫纲56个分类群。木香(Xylopia aromatica)是最具代表性的树种,50%的样本类群分布在其分支上。区系分析结果显示,蜘蛛目、绢螨科、绢螨科(双翅目)和蚁科(膜翅目)为优势分类群。作为潜在的捕食者,蜘蛛科和蚁科是最重要的类群,在所有的树种中都有发现。其中以小蜂科和姬蜂科(膜翅目)居多。我们认为,法定保护区和永久保护区维持了树木种群,为天敌和其他冠层节肢动物提供了生存场所。
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