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| Registros recuperados: 35 | |
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| FREITAS, L,H.C. de; PAIM, N.R.; SCHIFINO-WITTMANN, M.T.. |
| O genero americano Leucaena Benth, compreende arvores fixadoras de nitrogenio de multiplas utilidades, sendo L. leucocephala a especie mais conhecida. A grande variabilidade genetica e a facilidade de hibridacao permitem cruzamentos e selecao direcionada para necessidades especificas como tolerancia ao frio e a solos acidos. No presente trabalho foram analisadas algumas caracteristicas morfologicas de uma populacao hibrida de L. leucocephala (Lam) de With. (2n=104)x L. diversifolia (Schlecht) Benth. (2n=104), estabelecida na Estacao Experimental Agronomica da Universidade Federal do Rio Grande do Sul (EEA-UFRGS), Eldorado do Sul, RS. Foram analisados: comprimento da folha, numero de pares de foliolos e foliolulos por foliolo, numero, arranjo e coloracao... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Folhas; Flores; Sementes; Leaves; Flowers; Legumes; Seeds; Hybrid. |
| Ano: 1995 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/104167 |
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| QUINA,FRANK H.; BASTOS,ERICK L.. |
| ABSTRACT An overview is provided of the status of research at the frontiers of investigation of the chemistry and photochemistry of two classes of natural plant pigments, the anthocyanins and the betalains, as well as of the pyranoanthocyanin pigments formed from anthocyanins during the maturation of red wine. Together, anthocyanins and betalains are responsible for almost all of the red, purple and blue colors of fruits and flowers and anthocyanins and pyranoanthocyanins are major contributors to the color of red wines. All three types of pigments are cationic below about pH 3, highly colored, non-toxic, reasonably soluble in water or alcohol and fairly stable to light. They exhibit good antioxidant or antiradical activity and, as part of our diet, confer... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anthocyanins; Betalains; Flowers; Plant pigments; Wine. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000200681 |
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| Warren,Steven D.; Aguilera,Lorgio E.; Scott Baggett,L.. |
| BACKGROUND: Many barrel or columnar cacti, including some in the Atacama Desert, produce their reproductive tissue at or near the terminal apices of solitary or minimally branched stems that lean toward the equator, reportedly to maximize exposure to photosynthetically active radiation (PAR). Those with lateral reproductive tissue, often produce the tissue on the equatorial side of the stems. An examination of the multi-stemmed, arbuscular cactus, Eulychnia breviflora, was made to determine if it follows the same general strategy. METHODS: Individuals of the species were evaluated along a 100 km transect in the Atacama Desert. The position of all floral buds and open flowers was documented relative to the center of the plants and relative to the center of... |
| Tipo: Journal article |
Palavras-chave: Eulychnia breviflora; Energetic efficiency; Equatorial orientation; Flowers; Photosynthetically active radiation (PAR). |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2016000100010 |
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| Registros recuperados: 35 | |
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