Variação sazonal de algumas características nutricionais e bioquímicas relacionadas com a produção de látex em clones de seringueira [Hevea brasiliensis (Wild.) Muell. Arg.)], em Lavras-MG

Melo, Renato Figueiredo; Oliveira, Luiz Edson Mota de; Mésquita, Alessandro Carlos; Filho, Nelson Delú

doi:10.1590/s1413-70542004000600015

Cited by 4 publications

(3 citation statements)

References 9 publications

(8 reference statements)

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“…According to the results found in the present study, the clone FX 2261 has the potential for superior latex production due to thicker bark when compared with the clone RRIM 600. However, this similar response between FX 2261 and RRIM 600 was not observed by Melo et al (2004), who found that RRIM 600 presented the greatest latex production among the genotypes evaluated.…”

Section: Morphological Parameterssupporting

confidence: 63%

Soil Attributes, Soil Organic Carbon and Relations With Rubber-Tree Morphology in a Three-Decade-Old Orchard

Torres¹,

Moreira²,

Mageste³

et al. 2020

AgricultForest

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Successful establishment of a rubber tree plantation may be affected by the initial soil management at the time of planting. However, research on the longterm development of rubber tree plantations and initial soil treatment is scarce. Thus, this study evaluated agronomic characteristics, organic carbon and its stock and their relation to soil attributes in a 32-year-old rubber tree plantation. The experiment adopted a randomized block design with two rubber tree clones (RRIM 600 and FX 2261) and five planting systems (P1: 0.4 x 0.6 m planting hole; P2: 0.35 x 0.4 m planting hole; P3: 0.45 x 0.45 m furrow; P4: 0.35 x 0.8 m planting hole; P5: 0.25 x 0.5 m planting hole) with four replications. The trunk circumference at breast height, height of first bifurcation, bark thickness, total organic carbon in litterfall and carbon stocks in soil were evaluated. The planting systems used for the rubber trees and clones did not influence the trunk circumference at breast height or height of first bifurcation. The bark thickness of FX 2261 was greater than that of RRIM 600. The soil's physical attributes were not affected by different planting systems or clones. The soil of the rubber tree plantation includes significant amounts of carbon absorbed from the atmosphere as CO 2 .

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Section: Morphological Parameterssupporting

confidence: 63%

Soil Attributes, Soil Organic Carbon and Relations With Rubber-Tree Morphology in a Three-Decade-Old Orchard

Torres¹,

Moreira²,

Mageste³

et al. 2020

AgricultForest

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“…However, other studies have shown that spacing affects other characteristics important for cultivation, such as the formation of clusters, number of fruits per cluster, production per plant and overall physic nut yield, where a higher yield was observed in treatments with lower plant density, that is, greater spacing (Müller et al 2015). Latex production depends on, among other things, the availability of carbohydrate reserves, nutritional status of the plant, anatomic structure of lactiferous vessels and biosynthesis of aminoacids and proteins (Melo et al 2004). In addition to these factors, seasonal climate changes involving fluctuations in light, temperature and humidity can affect photosynthetic activity and, consequently, plant metabolism, altering latex production (Melo et al 2004).…”

Section: Variablesmentioning

confidence: 99%

“…Latex production depends on, among other things, the availability of carbohydrate reserves, nutritional status of the plant, anatomic structure of lactiferous vessels and biosynthesis of aminoacids and proteins (Melo et al 2004). In addition to these factors, seasonal climate changes involving fluctuations in light, temperature and humidity can affect photosynthetic activity and, consequently, plant metabolism, altering latex production (Melo et al 2004). For this reason, environmental data in the present study were obtained in the collection months, followed by assessment of the effect of these variables on latex production.…”

Section: Variablesmentioning

confidence: 99%

Factors that influence in Jatropha curcas L. latex production

et al. 2017

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ABSTRACT:Latex from Jatropha curcas L. exhibits biotechnological potential for the development of biodiesel and drugs. Little is known about the collection methods and latex productivity of this species.In order to garner information on the use of J. curcas latex, factors that influence production by this species were assessed. As a result, no significant difference was found between the volume of latex production. Multiple regression analysis demonstrated that latex production is positively associated with plant height and negatively associated with fruit production and other variables that maximize it. During the fruiting process the plant uses most of the assimilates for fruit development and a lower percentage to produce secondary compounds, resulting in less availability of these metabolites for latex production. In general, the latex production obtained from this species is low and limits commercial exploitation of this compound, despite its possible pharmacological potential.

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Análise sazonal da produção e da atividade enzimática de látex fresco coletado de frutos de plantas femininas e hermafroditas de mamão (Carica papaya L.)

Borella

Stevanato

2015

Rev. bras. plantas med.

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RESUMO:O látex obtido do fruto de Carica papaya L. (mamão) é de grande importância industrial e farmacêutica. Sua obtenção, através do cultivo dessa espécie, depende de vários fatores ainda pouco estudados. Nesse sentido, o presente trabalho tem por objetivo avaliar e comparar plantas femininas e hermafroditas de C. papaya em relação à produção de látex e sua atividade enzimática em coletas semanais e consecutivas durante o 12 o mês de cultivo (verão) e no decorrer do segundo ano de desenvolvimento das plantas, e em mais três coletas abrangendo as demais estações do ano (outono, inverno e primavera). Os resultados mostraram que, em quatro coletas semanais e sucessivas durante o verão, a massa de látex da primeira coleta foi superior às demais para plantas femininas. Plantas hermafroditas tiveram comportamento oscilante para esta variável. Plantas femininas tiveram médias de produção superiores comparadas com as hermafroditas. As médias das atividades enzimáticas desse período se mostraram superiores para plantas hermafroditas. Nas coletas estacionais foi observado que plantas hermafroditas têm um comportamento mais oscilante em relação à produção de látex e atividade enzimática. Plantas femininas produzem, em média, maior massa de látex e são mais constantes na produção. Nas estações avaliadas, observaram-se semelhanças nas médias das atividades enzimáticas entre plantas femininas e hermafroditas.Palavras-chave: mamão; látex; papaína ABSTRACT: Seasonal analysis of yield and enzyme activity of fresh latex collected from fruits of female and hermaphrodite plants of papaya (Carica papaya L.). The latex obtained from the fruit of Carica papaya L. (papaya) is of great industrial and pharmaceutical importance. Its obtainment, through the cultivation of this specie, depends on several factors still poorly studied. In this sense, this study aims to evaluate and compare hermaphrodite and female plants of C. papaya for the production of latex and its enzymatic activity in weekly and consecutive collections of fruits during the 12th month of cultivation (summer) and during the second year of the plant´s development, in three collections covering the other seasons (autumn, winter and spring). The results showed that, in four successive weekly tapping during the summer, the latex mass of the first collection was superior to the others, for female plants. Hermaphrodite plants had oscillating behavior for this variable. Female plants had higher production averages, compared with the hermaphrodites ones. The averages of the enzymatic activities of this period were higher for hermaphrodite plants. The seasonal tapping showed that hermaphrodite plants had oscillating behavior in the production of latex and enzyme activity. Female plants produced, on average, greater mass and were constant in latex production. In the evaluated seasons, similarities in the averages of the enzymatic activities between female and hermaphrodite plants were observed.

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Variação sazonal de algumas características nutricionais e bioquímicas relacionadas com a produção de látex em clones de seringueira [Hevea brasiliensis (Wild.) Muell. Arg.)], em Lavras-MG

Cited by 4 publications

References 9 publications

Soil Attributes, Soil Organic Carbon and Relations With Rubber-Tree Morphology in a Three-Decade-Old Orchard

Soil Attributes, Soil Organic Carbon and Relations With Rubber-Tree Morphology in a Three-Decade-Old Orchard

Factors that influence in Jatropha curcas L. latex production

Análise sazonal da produção e da atividade enzimática de látex fresco coletado de frutos de plantas femininas e hermafroditas de mamão (Carica papaya L.)

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