咖啡幼苗生长曲线的函数拟合

Q4 Agricultural and Biological Sciences

Agronomia Colombiana Pub Date : 2022-11-09 DOI:10.15446/agron.colomb.v40n3.101333

Andrés Felipe León-Burgos, Carlos Ramírez, José Raúl Rendón Sáenz, Luis Carlos Imbachi-Quinchua, Carlos Andrés Unigarro-Muñoz, H. E. Balaguera-López

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引用次数: 0

摘要

咖啡植物的生长模式是由遗传、生理和气候因素之间的相互作用决定的。本研究的目的是评估2019年上学期哥伦比亚卡尔达斯Chinchina气候条件下苗圃中咖啡植物的生长模式。在六个月的时间里，对Cenicafé1品种进行了测量。对20株植物移植后每15天评估一次生长参数，如叶面积、叶数、高度、茎直径和主根长度，并计算每个生长变量的绝对生长率平均值。对于总叶面积、总叶数和茎高，调整了S型生长曲线，而茎直径（R2=0.97）和主根长度（R2=0.95）的生长曲线是线性的。总叶面积520 cm2的平均值为3.31 cm2 d-1，总叶面积11（0.055叶d-1），高度30.23 cm（0.155 cm d-1），在180 DAT下，茎直径为4.87 mm（Ĝ0.199 mm d-1），主根长度为28.80 cm（\284\0.087 cm d-1）。这些结果表明，生长曲线可能是描述咖啡幼苗在苗圃生长阶段生长模式的有用工具。

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Fitting growth curves of coffee plants in the nursery stage of growth: A functional approach

The growth patterns of coffee plants are determined by interactions between genetic, physiological, and climate factors. The objective of this study was to evaluate the growth patterns of coffee plants in the nursery under the climatic conditions of Chinchiná, Caldas, Colombia, during the first semester of 2019. Measurements were carried out in the Cenicafé 1 variety during six months. Growth parameters such as leaf area, number of leaves, height, stem diameter, and length of the main root were evaluated every 15 d after transplanting (DAT) in 20 plants and the averages of absolute growth (Ĝ) rate of each growth variable were calculated. For the total leaf area, total number of leaves, and stem height, a sigmoidal-type growth curve was adjusted, while the growth curve was linear for the stem diameter (R2 = 0.97) and main root length (R2 = 0.95). Average values were obtained for 520 cm2 for total leaf area, with an Ĝ of 3.31 cm2 d-1, 11 for total leaves (Ĝ 0.055 leaves d-1), 30.23 cm for height (Ĝ 0.155 cm d-1), 4.87 mm for stem diameter (Ĝ 0.199 mm d-1), and 28.80 cm for main root length (Ĝ 0.087 cm d-1) at 180 DAT. These results suggest that growth curves could be a useful tool for describing the growth patterns of coffee seedlings during the nursery stage of growth.

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来源期刊

Agronomia Colombiana Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

25 weeks

期刊介绍： Agronomia Colombiana journal it is intended to transfer research results in different areas of tropical agronomy. Original unpublished papers are therefore accepted in the following areas: physiology, crop nutrition and fertilization, genetics and plant breeding, entomology, phytopathology, integrated crop protection, agro ecology, weed science, environmental management, geomatics, biometry, soils, water and irrigation, agroclimatology and climate change, post-harvest and agricultural industrialization, food technology, rural and agricultural entrepreneurial development, agrarian economy, and agricultural marketing (Published: Quarterly).