|
|
|
|
|
| Hamann, T.; Smets, E.; Lens, F.. |
| Bark anatomy is an unappreciated discipline in plant systematics, despite its great potential to reveal systematically informative features. In this paper, main reasons for the lack of detailed bark anatomical data in many plant families are identified, including problems with sectioning, terminological issues, and difficulties in observation of dilated stems. We deal with these problems by focusing on two aspects: (1) compare, discuss and improve existing sectioning and maceration techniques using two species with soft and hard bark tissues; and (2) discuss the best way to collect stem bark samples. We hope that this paper will stimulate inclusion of bark anatomical data in future systematic studies. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Bark anatomy; Light microscopy; Macerations; Plant systematics; Phloem; Sectioning; 42.54. |
| Ano: 2011 |
URL: http://www.repository.naturalis.nl/record/421834 |
| |
|
|
| NASCENTE, A. S.; COBUCCI, T.; BRASIL, V.; REIS JUNIOR, R. dos A.. |
| The self-shading of plants is usually caused by the advance of their growth and development. This reduces transpiration and, consequently, nutrients uptake via xylem in lower half of plants, resulting in yield losses. Strategies should be developed to promote greater nutrient input in these regions with low-plant transpiration. The objective of this work was to study the effect of foliar application of boron (B), copper (Cu), manganese (Mn), and zinc (Zn) complexed with organic molecules on the translocation of these micronutrients to the plant’s lower half (region of low transpiration) and its relationship with soybean, common bean, and cotton yield. Two field trials were carried out on soybean, common bean, and cotton crops. The first trial evaluated... |
| Tipo: Artigo de periódico |
Palavras-chave: Low transpiration; Mobile phloem; Feijão; Phaseolus Vulgaris; Algodão; Soja; Glycine Max; Gossypium Hirsutum; Evapotranspiração; Nutrição Vegetal; Pólen; Evapotranspiration; Phloem; Plant nutrition; Soybeans; Cotton; Beans. |
| Ano: 2023 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1160158 |
| |
|
| |
|
|
| Matus,José Tomás; Vega,Andrea; Loyola,Rodrigo; Serrano,Carolina; Cabrera,Soledad; Arce-Johnson,Patricio. |
| A new and devastating physiological disorder of Vitis vinifera cv. Merlot was recently reported, known as premature berry dehydration (PBD), which is characterized by plant growth reduction, induction of general senescence and pedicel necrosis in the fruit, causing significant reductions in vineyard production. The causes of this disease remain unclear and previous reports suggest that it may be associated with phloem disruption and water provision. For this reason, any factor causing phloem disturbances could cause an important change in the berry water status. As some micro-organisms have been reported to disrupt phloem flow, we analyzed the occurrence of phytoplasma and viruses in commercial vineyards presenting PBD. In this study, a phytoplasma was... |
| Tipo: Journal article |
Palavras-chave: Berry shrinkage; Candidatus phytoplasma mali; Late ripening; Over ripened; Pedicel necrosis; Phloem; Water transport. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000500007 |
| |
|
|
|
