Effect of the seed weight on the growth of young avocado rootstock seedlings

IF 0.6 4区农林科学 Q4 AGRONOMY

Bioagro Pub Date : 2022-05-01 DOI:10.51372/bioagro342.8

Luz Mejía-Jaramillo, C. Barrera-Sánchez, Ó. Córdoba-Gaona

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引用次数: 0

Abstract

The cultivation of avocado cv. Hass (Persea americana Miller) in Colombia has grown in recent years. Among the country's challenges is to increase the orchards' productivity by guaranteeing grafts plants the best agronomic, genetic, and phytosanitary parameters. This work aims to evaluate for 90 days (nursery phase) the growth and development of avocado rootstocks originated from seeds with different weight ranges. A completely randomized experimental design was carried out, with treatments consisting in four Creole avocado seed weights (40-60 g, 60-80 g, 80-100 g, and over 100 g). In general, seeds greater than 80 g had the best germination percentage (over 70 %), a greater plant height, and a greater stem diameter in each of the evaluated periods. The seeds greater than 100 g presented the emergence of multiple stems at 30 days after transplanting; this fact was related to the size and reserves of the seed. The highest accumulated dry matter in stems, leaves, and total plant (without seeds) (cotyledons) were present in treatments with seeds above 80 g. These plants showed higher germination, significant more accumulation of biomass and greater vigor, which could shorten the nursery time while guaranteeing the quality of the material influenced by improved growth and seedling survival.

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种子重量对鳄梨砧木幼苗生长的影响

近年来，哥伦比亚种植的鳄梨品种Hass（Persea americana Miller）不断增加。该国面临的挑战之一是通过保证嫁接植物具有最佳的农艺、遗传和植物检疫参数来提高果园的生产力。这项工作旨在评估90天（苗圃阶段）来自不同重量范围种子的鳄梨砧木的生长和发育。进行了完全随机的实验设计，处理包括四种克里奥尔鳄梨种子重量（40-60克、60-80克、80-100克和超过100克）。一般来说，在每个评估时期，大于80g的种子具有最好的发芽率（超过70%）、更高的株高和更大的茎直径。大于100g的种子在移植后30天出现多个茎；这一事实与种子的大小和储量有关。种子在80g以上的处理中，茎、叶和全株（无种子）（子叶）的干物质积累量最高。这些植物表现出更高的发芽率、更大的生物量积累和更大的活力，这可以缩短苗圃时间，同时保证材料的质量，从而提高生长和幼苗存活率。

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来源期刊

Bioagro Agricultural and Biological Sciences-General Agricultural and Biological Sciences

CiteScore

1.40

自引率

37.50%

发文量

期刊介绍： Bioagro es una revista científica del Decanato de Agronomía de la Universidad Centroccidental “Lisandro Alvarado” (UCLA). Su periodicidad es cuatrimestral y se publica en los meses de enero, mayo y septiembre. Cada trabajo es revisado por al menos dos especialistas en el área, externos a la revista, de cuya opinión depende la aceptación definitiva. Se utiliza sistema de arbitraje doble ciego. La revista va dirigida, fundamental pero no exclusivamente, a profesionales y técnicos del área agrícola. Su objetivo es publicar trabajos científicos originales e inéditos en ciencias agrícolas que enfoquen aspectos de agronomía, botánica y propagación de plantas, entomología y zoología, suelos, fitopatología y protección vegetal, ingeniería agrícola, genética y mejoramiento de plantas, ecología, procesamiento de productos agrícolas, biotecnología y sociales. También pueden ser publicados artículos cortos en los que se presenten descubrimientos científicos, desarrollos tecnológicos y resultados de diagnósticos integrales, en la modalidad de Notas Técnicas. En Venezuela, se encuentra en las bibliotecas de todas las universidades e institutos de educación superior que ofrecen carreras agronómicas, así como de los entes oficiales de investigación agropecuaria. En el exterior, la revista llega a universidades y/o institutos de investigación agrícolas de todos los países de América Latina así como Estados Unidos, Canadá y España.