Exploring drought tolerance in coffee: a physiological approach with some insights for plant breeding

DaMatta, Fábio M.

doi:10.1590/s1677-04202004000100001

Cited by 108 publications

(92 citation statements)

References 28 publications

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“…According to Soares, Mantovani, Rena, and Soares (2005), a reduction in coffee branch growth results in a lower production of available nodes for bud formation, which consequently reduces fruit production. According to DaMatta (2004), a water deficit affects the development of coffee plant shoots and reduces the leaf area. Further, a reduction in stomatal opening ultimately results in lower CO 2 absorption and a reduction in the photosynthetic rate.…”

Section: Resultsmentioning

confidence: 99%

<b>Vegetative growth of Conilon coffee plants under two water conditions in the Atlantic region of Bahia State, Brazil

et al. 2016

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ABSTRACT. Extreme temperatures and persistent water stress stand out among the main factors that restrict the vegetative growth and productivity of Coffea canephora. The objective of this study was to evaluate the vegetative growth of orthotropic and plagiotropic branches of C. canephora under non-irrigated and irrigated conditions, and their correlation with climatic factors in the Atlantic region of Bahia State, Brazil. The experiment was established with two treatments (non-irrigated and irrigated) in a completely random design with 14 replicates. One orthotropic and four plagiotropic branches were labelled on each plant. During the two-year experimental period, the growth of these branches was evaluated at 14-day intervals. Two harvests were performed to obtain productivity data. In summary, it was confirmed that irrigation resulted in an increased productivity of Conilon coffee in the Atlantic region of Bahia, Brazil. The growth rate of the orthotropic and plagiotropic branches was higher in irrigated plants. The growth rate of the plagiotropic branches was limited by the fruit load capacity. The growth rate of C. canephora branches was not limited by the minimum average air temperature in the Atlantic region of Bahia, Brazil.Keywords: Coffea canephora, water deficit, temperature, plagiotropic branches. RESUMO.Temperaturas extremas e o deficit hídrico prolongado destacam-se como os fatores limitantes ao crescimento vegetativo e à produtividade de Coffea canephora. O objetivo foi avaliar o crescimento vegetativo de ramos ortotrópicos e plagiotrópicos de C. canephora em condições não irrigadas e irrigadas, e relacioná-lo com os fatores climáticos, na região Atlântica da Bahia. O experimento foi instalado com dois tratamentos (não irrigado e irrigado), no delineamento inteiramente casualizado, com 14 repetições. Marcou-se um ramo ortotrópico e quatro ramos plagiotrópicos em cada planta. O crescimento desses ramos foi avaliado em intervalos de 14 dias, durante dois anos. Foram realizadas duas colheitas para obtenção da produtividade. Em resumo, foi confirmado que a irrigação resultou em aumento de produtividade de café Conilon na região Atlântica da Bahia. A taxa de crescimento dos ramos ortotrópicos e plagiotrópicos com carga pendente é superior nas plantas irrigadas. A taxa de crescimento de ramos plagiotrópicos é limitada pela carga pendente. A taxa de crescimento dos ramos de C. canephora não é limitada pela temperatura mínima média do ar predominante na região Atlântica da Bahia. Palavras-chave:Coffea canephora, deficit hídrico, temperatura, ramos plagiotrópicos.

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Section: Resultsmentioning

confidence: 99%

<b>Vegetative growth of Conilon coffee plants under two water conditions in the Atlantic region of Bahia State, Brazil

et al. 2016

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“…For the species, C. arabica, the expression of several agronomic traits have been reported to be highly related to the expression of genetic diversity among cultivars (Carvalho et al, 2012;DaMatta, 2004;Del Grossi et al, 2013;Martinez et al, 2011;Martins et al, 2015;Rodrigues et al, 2014Rodrigues et al, , 2015Shigueoka et al, 2014). Additionally, the estimative of coefficient of genotypic determinations were higher than 90% for MRR, LFG and BER ( Table 1), showing that these traits are especially valuable in the genetic study of the recovery, since genetic factors seems to have major contribution in the determination of the phenotypic values of these traits.…”

Section: Resultsmentioning

confidence: 99%

Coffee pruning: Importance of diversity among genotypes of Coffea arabica

Rodrigues¹,

Martins²,

Apostólico³

et al. 2017

Afr. J. Agric. Res.

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The renovation of Arabica coffee crops located in mountain regions should be based on the use of new improved genotypes and increased plant density, which require the establishment of an adequate pruning system. Little is known about the response of improved genotypes to pruning, therefore this study was done to evaluate the vegetative and reproductive recovery after pruning of genotypes of Arabica coffee cultivated in environment with high plant density, in order to identify how the different patterns of recovery may influence the crop after pruning. The experiment was developed in Espírito Santo state (Brazil), where 16 genotypes of Arabica coffee were cultivated in a randomized block design, with four repetitions (six plants per plot) and pruned after their fourth harvest. The 2-years period after pruning was evaluated to quantify the potential recovery and variability of behavior were found, making it possible to identify groups of genotypes of different behavior regarding the green coffee yield, grain size, growth rate and formation of new vegetative structures. The results show that not all genotypes recovered in the same speed after pruning, being possible to highlight some genotypes with better performance post-pruning. This fact shows the importance of genetic factors; more specifically the recovery, growth and coffee yield aft er the intervention; should not be ignored when deciding on the best method to renew the plantation. The decision on which cultivar and which pruning method to use should be a rational choice, based on the possible synergy between those technologies.

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“…Transpiration reduction also means increasing water use efficiency [30] which may show better adaptability in unfavorable soil conditions. Other species may adapt to drought through morphological changes such as leaf size [31] or possibly anatomical characters [8] rather than through physiological mechanisms.…”

Section: Physiological Charactersmentioning

confidence: 99%

The Impact of tin mining in Bangka Belitung and its reclamation studies

2017

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Abstract. Tin mining in Bangka Belitung has been exploited for hundred years. The province is the second largest tin producer in the world. Secondary data from studies which took place in all four regencies in Bangka Island were discussed to show the impact of mining activities and its reclamation studies. In order to add plant selection criteria for regevetate mined soil, the greenhouse and laboratory experiment was carried out with fourteen herbs and grass species in Tennessee. The mining activities increase the wealth of the community, but the other hand they change and decrease the environmental stability, and cause horizontal conflicts. Offshore mining reduced water quality, change sea bed caused the change of biodiversity. Onshore mining activity reduces biodiversity and causes floods and damages infrastructure. While the more economic species are demanded, planting local tree species is challenging. An evaluation with local tree species concluded that best adapted species based on anatomical and physiological measurements was not those that showed the best performance in the field. The greenhouse and laboratory findings indicate that some physiological characteristics i.e. plant height and cover, transpiration rate, and foliar pigments may be used to select plant adaptability to mined soil.

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Exploring drought tolerance in coffee: a physiological approach with some insights for plant breeding

Cited by 108 publications

References 28 publications

<b>Vegetative growth of Conilon coffee plants under two water conditions in the Atlantic region of Bahia State, Brazil

<b>Vegetative growth of Conilon coffee plants under two water conditions in the Atlantic region of Bahia State, Brazil

Coffee pruning: Importance of diversity among genotypes of Coffea arabica

The Impact of tin mining in Bangka Belitung and its reclamation studies

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