Guava seedlings with rootstocks or interstocks and their reaction to salinity

Souza, Alexandre Gomes de; Marinho, Cláudia Sales; Silva, Mírian Peixoto Soares da; Carvalho, Waleska Soares Gomes de; Campos, Graziella Siqueira; Pestana, Bruno Abreu

doi:10.1590/1678-4499.20190210

Cited by 1 publication

(1 citation statement)

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“…Cavalcante et al (2005) found that four guava varieties with seedlings irrigated with an EC w greater than 1.5 dS m -1 , 180 d after sowing, did not have the agronomic quality for transplanting; while Ramírez et al (2017) observed, in the germination, longitudinal root and stem growth of the variety 'Criolla Roja', a slight tolerance up to a concentration of 2.5 dS m -1 of NaCl. Souza et al (2020) found that P. cattleianum is not very suitable as a rootstock in saline areas because of its greater absorption of Na + , which leads to high levels of Na + in the leaves of the scion and, thus, lower tolerance to saline stress.…”

Section: Salinitymentioning

confidence: 99%

Ecophysiological aspects of guava (Psidium guajava L.). A review

Fischer

Melgarejo

2021

Rev. Colomb. Cienc. Hortic.

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Guava, because of its ability to grow in tropical and subtropical climates, has been introduced to some 60 low-latitude countries. It is adapted to a temperature range between 15 and 30°C. Outside this range, the effect of lower or higher temperatures reduces fruit set, while night temperatures of 5 to 7°C stop growth. Additionally, low temperatures hinder production, causing flowers to fall or increasing the fruit development cycle, up to 220 days. When estimating the cardinal temperatures of development, the minimum threshold temperature was 10.9°C, the optimum temperature was 17.3°C, and the maximum threshold temperature was 51.2°C. The guava tree adapts well to altitudes between 0 and 2,000 m a.s.l. in Colombia; however, there is a high genotype×environment interaction for production and quality characteristics in fruits with respect to the orchard elevation. Radiation >2,000 µmol photons m-2 s-1 decreased the fruit ascorbic acid content. An important ecophysiological factor in guava is water, and crops require between 1,000 to 2,000 mm year-1. It withstands waterlogging for several days, but excess precipitation and atmospheric humidity decrease fruit quality considerably. However, this tree is classified as moderately drought-tolerant to stress from water deficits, affecting flowering and fruit set. It is also moderately tolerant to salinity, depending on the variety, supporting electrical conductivities up to 1.5-1.8 dS m-1. Generally, guava can be cultivated in a wide range of tropical and subtropical areas, where it is preferred because of its high nutritional and medicinal contents and its aptitude for transport and handling.

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Section: Salinitymentioning

confidence: 99%