Comportamiento de accesiones de coffea Arabica sometidas a déficit de humedad del suelo

Molina, Diana María; Ramírez-Builes, Victor Hugo; Cortina, Hernando

doi:10.38141/10778/67102

Cited by 2 publications

(4 citation statements)

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“…Of these 18 accessions, nine were Ethiopian introductions of C. arabica (CCC238, CCC254, CCC284, CCC372, CCC474, CCC536, CCC537, CCC555, CCC1147) that showed potential to serve as male parents to develop a coffee variety tolerant to water deficit. Corroborating these findings, when three of these Ethiopian introductions (CCC238, CCC474, CCC1147) were submitted to water deficit over a 10-month period, the number of leaves, leaf area, and total dry biomass did not decrease significantly regarding the treatment involving irrigation at field capacity (Molina;Ramírez;Cortina, 2016). Two of these introductions, CCC1147 and CCC238, also presented greater water use efficiency (Molina;Ramírez;Cortina, 2016).…”

Section: Discussionmentioning

confidence: 73%

“…Corroborating these findings, when three of these Ethiopian introductions (CCC238, CCC474, CCC1147) were submitted to water deficit over a 10-month period, the number of leaves, leaf area, and total dry biomass did not decrease significantly regarding the treatment involving irrigation at field capacity (Molina;Ramírez;Cortina, 2016). Two of these introductions, CCC1147 and CCC238, also presented greater water use efficiency (Molina;Ramírez;Cortina, 2016).…”

Section: Discussionmentioning

confidence: 73%

“…This genetic diversity is greater in wild populations as compared with cultivated varieties (Anthony et al, 2002;Labouisse et al, 2008) (Orozco;Jaramillo, 1978). In addition, no significant decreases were observed in the Ethiopian introductions of C. arabica CCC238, CCC474, and CCC1147 in terms of total dry biomass, number of leaves, and leaf area when exposed to water deficit as compared with irrigation at field capacity under screenhouse conditions (Molina;Ramírez;Cortina, 2016). On the other hand, 21 coffee genotypes were evaluated at the Agronomic Institute of Paraná (IAPAR, its Portuguese acronym).…”

Section: Introductionmentioning

confidence: 99%

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Identifying Coffea genotypes tolerant to water deficit

Molina

Medina-Rivera

2022

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Approximately 26% of the coffee grown in Colombia is located in areas presenting water deficit, with some of these areas also presenting high solar brightness. This combination reduces coffee production, thus affecting the income of 31% of the country's coffee-growing families. To identify accessions of the Colombian Coffee Collection (CCC) that are tolerant to water deficit, 65 genotypes were evaluated in screenhouse conditions at the National Coffee Research Center (Cenicafé), located in Manizales, Caldas, Colombia. Seedlings of each genotype were transplanted to polyethylene bags, each filled with 10 kg sandy loam Andisol soil. Two moisture treatments were applied as follows: (1) soil at field capacity (60% moisture) and ( 2) water deficit conditions, with soil at 50% field capacity (30% moisture). After five months, total dry biomass was determined, considered as the sum of the dry biomass of leaves, stems, and roots. The Student's t test for independent samples was used to analyze resulting values at a level of significance of 5%. Reducing irrigation under water deficit conditions usually delays accession growth, which is reflected in decreased biomass. However, the total dry biomass of nine Ethiopian introductions of Coffea arabica (CCC238, CCC254, CCC284, CCC372, CCC474, CCC536, CCC537, CCC555, CCC1147), six diploid accessions (CCC1030, EA.20, EA.209, EA.227, EA.229, EA.287), and three interspecific hybrids of Caturra x Coffea canephora (25, 640, 702) in water deficit conditions did not differ statistically from the total dry biomass obtained in treatments with irrigation at field capacity. Because these introductions present adaptation mechanisms to water deficit, they retain their leaves without reducing their leaf area or total dry biomass and should accordingly be considered as candidates for evaluation in dry regions to determine their tolerance to water deficit based on effects on production or biomass.

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Section: Discussionmentioning

confidence: 73%

Section: Discussionmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

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Identifying Coffea genotypes tolerant to water deficit

Molina

Medina-Rivera

2022

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“…Otro reporte en el que ponen en evidencia las diferentes respuestas de la planta de café según sus cultivares al déficit hídrico, son los realizados por Molina et al (2016), en el que mediante investigaciones enfocadas en la evaluación de variedades tolerantes a sequía, reportaron dos introducciones etíopes (E.480, ET.56 y E.177) como promisorias progenitoras para el desarrollo de una variedad tolerante al déficit hídrico, debido a que presentaron altura, área foliar, número de hojas, biomasa total, peso seco de la parte aérea y longitud de raíz primaria y secundaria, similar a las plantas con riego normal.…”

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Evaluación de parámetros relacionados con el crecimiento de plantas de café (Coffea arabica L.) en respuesta al déficit hídrico del suelo

Lince Salazar,

Sadeghian-Khalajabadi,

Sarmiento Herrera

2024

rev.investig.agrar.ambient.

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Contextualization: Water is indispensable for plant development, and its response to water deficit varies according to the species and their growth stages. Knowledge gap: The magnitude of the effect of soil water deficit on the growth of young coffee (Coffea arabica L.) plants evaluated over time is unknown. Purpose: Research was carried out to identify the effect of soil water deficit and, therefore, the sensitivity to drought in young coffee plants. Methodology: The deficit irrigation method was used. Coffee plants of the Cenicafé 1 variety were planted at three months old in cylindrical pots and conditioned for four months in mesh houses at Cenicafé - Planalto. After conditioning, the effect on plants' growth and dry matter subjected to five ranges of soil matric potential was evaluated over 140 days. Potentials ranged from -20±10 kPa (control) to -1600±100 kPa. Results and conclusions: The results showed that soil water deficit affects the growth of young coffee (C. arabica) plants, which could define C. arabica at this stage as drought sensitive. Plants subjected to the least stress and the extreme drought showed a 30% and 57% decrease in dry matter, respectively. For growth variables, the effect of water deficit was evident in the evaluations at 77, 113, and 140 days of treatment application. In all cases, the results showed differences between the extreme drought and the control of up to 30cm in height and equatorial diameter, 0.9 m2 of leaf area, 132 leaves, 3 branches, and 66 nodes. The mathematical models that explained the effect of drought on dry mass were of the logarithmic type. It was identified that for weather and soil conditions similar to those in the study, young coffee plants begin to deteriorate after 40 days of drought. With a soil matric potential close to -40 kPa, for a time of 120 days, coffee plants can lose 10% of dry mass, and when the potential exceeds -90 kPa there can be further losses in dry matter and decreases in the number of branches between the 77 and 113 days.

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Comportamiento de accesiones de coffea Arabica sometidas a déficit de humedad del suelo

Cited by 2 publications

References 0 publications

Identifying Coffea genotypes tolerant to water deficit

Identifying Coffea genotypes tolerant to water deficit

Evaluación de parámetros relacionados con el crecimiento de plantas de café (Coffea arabica L.) en respuesta al déficit hídrico del suelo

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