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Control of Carapa guianensis phenology and seed production at multiple scales: a five-year study exploring the influences of tree attributes, habitat heterogeneity and climate cues. Repositório Alice
KLIMAS, C. A.; KAINER, K. A.; WADT, L. H. de O.; STAUDHAMMER, C. L.; RIGAMONTE-AZEVEDO, V.; CORREIA, M. F.; LIMA, L. M. da S..
During 5 y, we monitored reproductive activity and seed production of Carapa guianensis in two forest types to test the hypothesis that seed production is influenced by multiple factors across scales (regional climatic cues, local habitat heterogeneity and individual tree attributes). Variability in seed production was moderate at the population (CVp =1.25) and individual level (xCVi =1.24). Amixed modelwith a Poisson regression revealed that seed production was explained by variables at all scales. Total seed production was significantly higher in occasionally inundated forests. Diameter at breast height, dbh2, crown cross-sectional area, liana load, density, dry-season rainfall and mean maximum temperature were also significant in explaining seed...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Regressão de Poison; Liana; Fenologia; Reprodução vegetal; Andiroba; Carapa guianensis; Produção de sementes; População de planta; Análise estatística; Fator de crescimento; Clima; Temperatura; Floresta; Erva daninha; Phenology; Plant breeding; Seasonal development; Seedling production; Growth performance; Statistical analysis; Poisson distribution; Fenología; Fitomejoramiento; Desarrollo estacional; Producción de plántulas; Desempeño del crecimiento; Análisis estadístico; Distribución de Poisson.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/914987
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Musk gland seasonal development and musk secretion are regulated by the testis in muskrat (Ondatra zibethicus) Biol. Res.
Zhang,Tianxiang; Peng,Dong; Qi,Lei; Li,Weixuan; Fan,Mengyuan; Shen,Jiachen; Yang,Liangliang; Wang,Yihua; Wang,Wenxia; Hu,Xiaolong; Cai,Ruibo; Zhou,Ran; Wei,Yuting; Zhou,Juntong; Yang,Shuang; Hu,Defu; Liu,Shuqiang.
Abstract Background The muskrat is a seasonal breeder. Males secrete musk to attract females during the breeding season. The testosterone binding to the androgen receptor (AR) in musk glands of muskrat may play an important role conducting the musk secretion process. Methods The musk gland, testis and blood samples of musk rats are collected in both breeding and non-breeding seasons. Some part of the samples are kept in liquid nitrogen for transcriptome analysis and Western blotting test. Some part of the samples are kept in 70% alcohol for histology experiment, blood samples are kept at −20 °C for the serum testosterone measurement experiment. Results This study demonstrates that the quantity of secreted musk, the volume of the musk...
Tipo: Journal article Palavras-chave: Muskrat; Musk gland; Testis; AR; Seasonal development.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100201
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