Características biométricas de frutos e sementes de Oenocarpus bataua Mart. com procedência em Almeirim, Pará

Felizardo, S. A.; Freitas, Alessandra Doce Dias de; Marques, N. de S.; Bezerra, Denise Aline Casimiro

doi:10.18378/rvads.v10i5.3672

Cited by 7 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Meanwhile, higher values were documented for other species [29,32] for Balanites aegyptiaca and Capsicum chinense Jacq., respectively. Fruit length and breadth are important morphological characteristics for plants characterization because biometric studies of fruits and seeds and their phenotypical correlations can allow the quantitative evaluation of a relevance character in relation to another [36]. The generated significant variations in fruit production between provenances is an indication that superior provenances of T. indica can be selected for domestication, breeding improvement, and commercialization purposes.…”

Section: Fruitmentioning

confidence: 99%

Morphological Variations inTamarindus indicaLINN. Fruits and Seed Traits in the Different Agroecological Zones of Uganda

Okello

Okullo

Eilu

et al. 2018

International Journal of Ecology

View full text Add to dashboard Cite

An investigation was carried out on variations in the morphological traits ofTamarindus indicaLINN. fruits (length, breadth, mass, and pulp mass) and seeds (number and mass) from the different agroecological zones and land use types of Uganda. Fruits were collected from the two land use types in the three agroecological zones and measured for various morphological traits. The study sites were located between 593 and 1,096 meters above sea level. ANOVA was used to test the differences in morphological traits of fruits and seeds between agroecological zones and land use types. The morphological traits relationship was determined using Pearson Correlation Coefficient (R). There were significant (P≤0.05) variations among theT. indicafruits and seed morphological traits within the agroecological zones and land use types. Lake Victoria Crescent agroecological zone recorded higher fruits morphological traits values. Wild and on-farm land use types were superior in fruits and seed traits, respectively. Many seeds per fruit (17) were recorded in Uganda (Eastern agroecological zone) than those recorded elsewhere. Significant uphill positive linear correlations between all morphological traits (P≤0.05) were observed, with the strongest relationships being between seed mass and seed number (R=0.79), fruit mass and fruit length (R=0.75), pulp mass and fruit mass (R=0.73), and seed mass and fruit mass (R=0.73). However, fruit breadth presented slightly weaker positive linear correlations with all other morphological traits. This is the first quantitative evaluation ofT. indicamorphological traits variation in Uganda. Dispersion/variation and correlation relationships suggest that all the studied morphological traits can be used for selection of plus trees for tree breeding improvement such as yield per tree. The observed variations are probably attributed to influence of agroecological zones’ factors, environmental factors, climate, land use types, and farming systems, a reflection ofT. indicaadaptation to different conditions showing high genetic and phenotypic differences to be exploited.

show abstract

Section: Fruitmentioning

confidence: 99%

Morphological Variations inTamarindus indicaLINN. Fruits and Seed Traits in the Different Agroecological Zones of Uganda

Okello

Okullo

Eilu

et al. 2018

International Journal of Ecology

View full text Add to dashboard Cite

show abstract

“…Esses resultados indicam que sementes mais pesadas podem ser encontradas em sementes com espessura e largura maiores, comprovando que os resultados de estudos biométricos podem orientar na colheita em campo. Felizardo et al (2015), reforçam esse ponto de vista e consideram que essas informações podem auxiliar não apenas favorecer a seleção de lotes de sementes mais uniformes para a realização de plantios, mas também facilitar o beneficiamento industrial das mesmas.…”

Section: Resultsunclassified

Viabilidade E Métodos Para Superação De Dormência E Análise Biométrica Das Sementes De Puerária

Pinheiro

Macedo

Soares

et al. 2019

RBES

View full text Add to dashboard Cite

A Pueraria phaseoloides é uma espécie forrageira, de importância na Amazônia devido ao uso na nutrição animal e correção de solo e muito utilizada como cobertura verde, porém esta espécie apresenta altos índices de dormência. A pesquisa foi realizada com o objetivo de verificar a possibilidade de superar a dormência por meio de cinco tratamentos, escarificação com punção, água por 24 horas, água por 8 horas, água a 80 °C por 5 minutos, lixa mais a testemunha, paralelamente, avaliou-se a germinação destas sementes quanto à coloração, estas foram separadas em pretas, vermelha clara, vermelhas escuras e mistas. Para esta finalidade, um lote de sementes de P. phaseoloides, foi submetido a três diferentes formas de avaliação, coloração tegumento, escarificação e caracterização biométrica. Foram realizadas avaliações de germinação quanto à forma de escarificação, germinação pela diferença de coloração do tegumento e caracterização biométrica do lote de sementes, neste foi avaliado, comprimento, largura, espessura e peso da massa fresca das sementes. Observou-se que: a) As sementes quando submetidas às diferentes formas de escarificação, os métodos que se mostraram com melhor potencial de superação de dormência foram os métodos de escarificação mecânica por meio de punção e lixa; b) Quando as sementes foram separadas pela coloração, para verificar em qual coloração as sementes apresentariam maior dormência, notou-se que as sementes de coloração pretas, tiveram um melhor desempenho do que as demais colorações; c) Quanto à avaliação morfométrica das sementes P. phaseoloides, dentre as variáveis analisadas a massa fresca foi a que apresentou maior coeficiente de variação.

show abstract

“…The woody plant species collected as intact seeds were classified into functional and ecological groups as follows: (1) primary dispersal syndrome: vertebrate‐dispersed, hydrochoric, auto/ballistic‐dispersed or anemochoric (Roosmalen, 1985); (2) growth/life form: tree, palm or liana; (3) seed mass by weighting trapped seeds in the lab; (4) origin: allochthonous as seeds without adults in the forest stand or autochthonous as seeds with adults in the forest stand and (5) useful by locals such as a source of wood, food, cosmetics production or medicine; unmeasured information about the species was obtained through specialized literature (Felizardo et al, 2015; Nascimento & Silva, 2005). By these procedures, we obtained the percentual of species and seeds into these ecological groups plus the total seed mass by vertebrate‐dispersed species for each forest stand excluding the açaí seeds.…”

Section: Methodsmentioning

confidence: 99%

Açaí palm management disturbs seed rain and soil seed bank of an Amazonian estuarine forest

et al. 2023

View full text Add to dashboard Cite

The exploitation of non‐timber forest products has been proposed as a sustainable way to exploit tropical forests, but such an opportunity remains to be proved. Here, we examine the impact of intensive açaí palm (Euterpe oleracea) management on the seed rain and soil seed bank in an estuarine forest landscape with a long history of forest management by locals in the Amazon region. Seed rain (100 80 cm2 collectors) and soil seed bank (100 30 cm2 samples) were monitored through a year across 20 forest stands, covering a gradient of açaí stem density (50–3575 açaí stems per ha). Seed rain and bank were dominated by açaí seeds (85.5%–85.8%) and by excluding them, seed rain and bank were low density and species poor, capturing a tiny subset from the local (17.91%–19.40%) and landscape woody flora (11.82%–14.55%). Moreover, autochthonous and vertebrated‐dispersed predominated as well as those from tree species considered useful by locals. Overall, açaí stem density positively affected açaí seed abundance in the seed rain and negatively affected seed pools in the bank in relation to abundance of seeds and vertebrated dispersed, while adult tree species richness and density and accessibility to forest stands were associated with more diversified seed pools. Thereby, forest stands are exposed to different levels of açaí management (high vs. low intensity) supported taxonomically distinct seed pools. Our results suggest that açaí intensification disturbs seed rain and soil seed bank with potential impacts on forest regeneration and the forest integrity standards required to consider açaí fruit production as sustainable according to current legislation.

show abstract

Características biométricas de frutos e sementes de Oenocarpus bataua Mart. com procedência em Almeirim, Pará

Cited by 7 publications

References 4 publications

Morphological Variations inTamarindus indicaLINN. Fruits and Seed Traits in the Different Agroecological Zones of Uganda

Morphological Variations inTamarindus indicaLINN. Fruits and Seed Traits in the Different Agroecological Zones of Uganda

Viabilidade E Métodos Para Superação De Dormência E Análise Biométrica Das Sementes De Puerária

Açaí palm management disturbs seed rain and soil seed bank of an Amazonian estuarine forest

Contact Info

Product

Resources

About