Influence of some environmental factors on the feijoa (Acca sellowiana [Berg] Burret): A review

Abstract

Climatic alterations affect the physiology, growth and production of the feijoa, a native plant to the higher zone between Brazil, Uruguay, Paraguay and Argentina. In Colombia, optimal growth temperatures are between 13 and 21°C (16°C). Very high temperatures (>32°C) affect pollination and fruit set, but low temperatures down to -4°C in adult plants do not cause significant damage. Thus, feijoa is a well-adapted plant to cold conditions since 3.04°C has been found as the base (minimum) temperature for the phase between flower bud and fruit set, while 1.76°C was measured as the base temperature for fruit development. The plant requires a minimum of 1000 hours of direct sunlight/year (optimum≥1500); the pyramidal form of the tree favors the entry of light into the crown organs. In the crown of a feijoa tree, trained with three branching levels of horizontal bent primary laterals, the outer middle quadrant produces the largest fruits, compared to those that grow in the upper quadrant. The reduced fruit growth is due to the excessive incidence of light (especially UV) and heat on these fruits on the periphery of the tree. In Colombia, altitudes between 1800 and 2700 meters above sea level (m a.s.l.) are adequate for growth and production of this fruit, while lower elevations favor the incidence of fruit flies. Precipitations between 700 and 1200 mm/year (max. 2000 mm) benefit the vegetative and reproductive performance of the tree, with an important drier season at the beginning of the reproductive season (flowering and fruit set). Due to the strength of its branches and the small, thick leaves, the tree is relatively wind resistant.

Assessing the Genetic Diversity of Wild and Commercial Feijoa sellowiana Accessions Using AFLPs

“…Within the feijoa's center of origin, characterized by high genetic variability, various germplasm collections have arisen to safeguard this vital resource. Noteworthy among these are the Feijoa Active Germplasm Bank (AGB) in Sao Joaquim-SC (Brazil), the National Feijoa Center (CENAF) in La Vega (Cundinamarca, Colombia), and the Nikitsky Botanical Garden (Crimean Peninsula), collectively preserving 313, 1500, and 400 accessions, respectively [23,24]. Despite the vast potential offered by this genetic diversity in elevating feijoa quality, its full exploitation remains unrealized [4].…”

Composition and Content of Hydrolysable Tannins in Feijoa Leaves, <i>Acca sellowiana</i>

“…Растение Acca sellowiana, или фейхоа, принадлежит к семейству Myrtaceae и представляет собой вечнозеленый кустарник или небольшое дерево высотой 4-6 метров [1]. Данный вид произрастает в тропическом и субтропическом климате [2]. Естественный ареал его произрастания охватывает территорию Южной Америки (юг Бразилии и север Уругвая) [3].…”