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| SCHIAVETTO,A.R.; PERECIN,D.; PINTO,L.R.; AZANIA,C.A.M.; ZERA,F.S.; MELLONI,M.N.G.. |
| ABSTRACT The hypothesis assumed was the existence of biotypes within populations, which has been the cause of difficulties in itchgrass control by farmers. For that, the genetic variability of three populations of Rottboellia cochinchinensis in sugarcane fields in the state of São Paulo was investigated by using the Amplified Fragment Length Polymorphism (AFLP) technique. Six primers were used to obtain molecular characterization data. AFLP gels were analyzed based on marker presence (1) and absence (0). Using NTSYs (Numerical Taxonomy and Multivariate Analysis System) software, the genetic similarity was calculated by the Jaccard coefficient and, from that, a dendrogram was built through the UPGMA (Unweighted Pair Group Method Arithmetic averages) method,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharum spp.; Itchgrass; Chemical management; AFLP.. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000300475 |
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| AMARAL,F.C.R.; NEPOMUCENO,M.P.; CHAVES,A.R.C.S.; CARLIN,S.D.; AZANIA,C.A.M.. |
| ABSTRACT: The aim of this research was to determine weed interference periods in sugarcane cultivated under the system of pre-sprouted seedlings, taking into account the impact on the final plant stand, and bud yield and stalk yield. In the field, this study used a randomized block design with 14 treatments and four replications. The treatments consisted of periods of control and weed coexistence with the sugarcane crop (cultivar IACSP95-5000): 30, 60, 90, 120, 150, 180, 210 and 240 days after planting. A phytosociological survey was carried out in the experimental area, and the species Merremia aegyptia, Urochloa decumbens and Nicandra physaloides were found to be predominant. At the end of 240 days, regression analysis was performed according to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Merremia aegyptia; Urochloa decumbens; Weed competition; Critical periods; PSS; Saccharum spp. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100197 |
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