Stay-green character and its contribution in Brazilian wheats
| Autor: | Henrique de Souza Luche, José Antônio Gonzalez da Silva, Rafael Nornberg, Maraisa Crestani Hawerroth, Solange Ferreira da Silveira Silveira, Vanderlei da Rosa Caetano, Rodrigo Lisboa Santos, Ricardo Garcia Figueiredo, Luciano Carlos da Maia, Antônio Costa de Oliveira |
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| Jazyk: | English<br />Portuguese |
| Předmět: | |
| Zdroj: | Ciência Rural, Vol 47, Iss 1 |
| Druh dokumentu: | article |
| ISSN: | 1678-4596 0103-8478 |
| DOI: | 10.1590/0103-8478cr20160583 |
| Popis: | ABSTRACT: The stay-green character has been related to greater stress tolerance and yield through longer activity of the photosynthetic apparatus. Association of this character with grain yield may be linked to a network of features other than the grain mass. This study aimed to shed light on the actual contribution of stay-green character in Brazilian wheats and the associations between grain yield components in different environmental conditions. The experiment was conducted in a randomized block design with three replications in the years 2003, 2004 and 2005. Sibling lines with and without the stay-green character were evaluated analyzing the phenotypic correlation and path analysis separately by year and maturity group. Under favorable growing conditions, the contribution of stay-green character in wheat is obtained by the increased ear fertility and number of grains. In a more restrictive scenario, it favors an increase in grain mass by longer filling time at the end of the cycle. |
| Databáze: | Directory of Open Access Journals |
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