哥伦比亚西北部橡胶树无性系落叶和复叶过程的物候模式

Q3 Agricultural and Biological Sciences Revista Facultad Nacional de Agronomia Medellin Pub Date : 2020-09-01 DOI:10.15446/rfnam.v73n3.80546
Juan José Guerra-Hincapié, Ó. Córdoba-Gaona, Juan Pablo Gil-Restrepo, Danilo Augusto Monsalve-García, J. D. Hernández-Arredondo, Enrique Martínez-Bustamante
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引用次数: 4

摘要

橡胶种植过程中的落叶-复叶过程的知识允许在生产系统中制定管理策略以提高橡胶产量。本研究的目的是确定塔拉兹市的FX 3864、IAN 710和IAN 873橡胶无性系以及Nechí市(哥伦比亚西北部)的FX 3864和IAN 873无性系的落叶重叶强度和持续时间。从2015年10月至2016年6月,在每个克隆的每个位置对坏死块进行了测量。光环境量化,采用半球摄影技术估算冠层开度百分比(CO)和叶面积指数。基于原始物候和气候变量,采用主成分分析(PCA)对评估周进行分组。利用物候变量趋势的图形表示对落叶-复叶过程进行了描述性分析,这些物候变量最能描述这一过程。证实了所评估时期气候变量与物候变量之间的关系;在诱导落叶过程中,降雨是最关键的气候特征。叶面积指数在2月份降至最低值,在taraz的IAN 710无性系为0.52,在Nechí的IAN 873无性系为0.64,这两个无性系的叶面积指数在2月份降至最低值。两地无性系复叶期均较短(4 ~ 6周),均发生在旱季。
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Phenological patterns of defoliation and refoliation processes of rubber tree clones in the Colombian northwest
The knowledge of the defoliation-refoliation process in rubber cultivation allows the development of management strategies in the production system to improve rubber yield. The objective of this study was to determine the intensity and duration of defoliation-refoliation of rubber clones FX 3864, IAN 710 and IAN 873 in the municipality of Tarazá and the FX 3864 and IAN 873 clones in the municipality of Nechí (northwestern Colombia). From October 2015 to June 2016, the measurements of the necromass were carried out in each location for each clone. The light environment was quantified, employing the hemispheric photographs technique to estimate canopy openness percentage (CO) and leaf area index. The assessed weeks were grouped by Principal Component Analysis (PCA) based on the original phenology and climatic variables. The defoliation-refoliation process was analyzed descriptively using graphical representations of the trend for the phenological variables that best described this process. The relationship between climatic and phenological variables in the period evaluated was evidenced; the rainfall was the most critical climatic characteristic in the induction of the defoliation process. The leaf area index was reduced to a minimum value in February, with values of 0.52 for IAN 710 clone in Tarazá, and 0.64 for the IAN 873 clone in Nechí, which corresponded to the highest defoliation stage in both locations. The refoliation period was short (4 to 6 weeks) and occurred during the dry season for all the clones in both places.
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来源期刊
Revista Facultad Nacional de Agronomia Medellin
Revista Facultad Nacional de Agronomia Medellin Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
1.30
自引率
0.00%
发文量
34
审稿时长
16 weeks
期刊介绍: La Revista Facultad Nacional de Agronomía Medellín (RFNA), de la Universidad Nacional de Colombia, Sede Medellín, Facultad de Ciencias Agrarias, es una publicación científica editada desde el año 1939, en formato impreso y digital y de acceso abierto desde la web —sin costo para autores y lectores—. Está orientada a investigadores que crean conocimiento disciplinar y multidisciplinar que articula la ciencia y la tecnología para hacer más productivo el campo a nivel empresarial y de economía campesina. La Revista tiene como objetivo divulgar resultados de investigación mediante artículos originales, inéditos y arbitrados (peer review) de carácter científico que respondan a preguntas específicas y que proporcionen sustento y pruebas a una hipótesis, en aspectos relacionados con las Ciencias Agronómicas, Producción animal, Ciencias Forestales, Ingeniería Agrícola, de Alimentos y otras afines que contribuyan a la solución de los limitantes del agro a nivel nacional, regional e internacional. La Revista recibe y publica, sin ningún costo, artículos en idioma inglés de investigación, revisión, reseñas y cartas al editor. Desde el 2017 la periodicidad de publicación es cuatrimestral, se publican tres números al año con circulación nacional e internacional, en los siguientes períodos: Enero - Abril Mayo - Agosto Septiembre - Diciembre This journal does not charge APCs or submission charges.
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