ABSTRACT. Mangaba (Hancornia speciosa Gomes) is found in areas of coastal tablelands in the Brazilian Northeast and Cerrado regions. This species has been subjected to habitat fragmentation that is mainly due to human activity, and requires conservation strategies. The aim of this study was to analyze the structure and inter-and intrapopulation genetic diversity of natural populations of H. speciosa Gomes using inter-simple sequence repeat (ISSR) molecular markers. A total of 155 individuals were sampled in 10 natural populations (ITA, PAC, IND, EST, BC, PIR, JAP, BG, NEO, and SANT) in the State of Sergipe, Brazil. Fifteen primers were used to generate 162 fragments with 100% polymorphism. Genetic analysis showed that the variability between populations (77%) was higher than within populations (23%). It was possible to identify five different groups by the unweighted pair group method with arithmetic mean and principal coordinate analysis, and only one individual (E10) remained isolated. Using ISSR markers it was possible to obtain a molecular profile of the populations evaluated, showing that these markers were effective and exhibited sufficient polymorphism to estimate the genetic variability of natural populations of H. speciosa Gomes.

Jenipapo (Genipa americana L. Rubiaceae) is a native species not endemic to Brazil and found in several biomes. The objective of this work was to evaluate the emergence and growth of seedlings cultivated in different substrates. Treatments were made of: T1 (fertilized soil), T2 (fertilized soil + coconut fiber), T3 (fertilized soil + sand), T4 (sand + coconut fiber), T5 (bovine manure + coconut fiber), and T6 (bovine manure + sand). The experiment consisted of a completely randomized design, with six treatments (substrates) and four replications of 25 seeds. The following variables were evaluated: first emergence count, percentage of emergence, emergence speed index, seedling height, root length, stem diameter, number of leaves, relative chlorophyll content (SPAD), leaf area, root dry matter, and shoot dry matter. The substrates T1 (fertilized soil), T2 (fertilized soil + coconut fiber), T3 (fertilized soil + sand) and T6 (bovine manure + sand) were more efficient for jenipapo seedlings production.

ABSTRACT. Banana (Musa spp) is a fruit species frequently cultivated and consumed worldwide. Molecular markers are important for estimating genetic diversity in germplasm and between genotypes in breeding programs. The objective of this study was to analyze the genetic diversity of 21 banana genotypes (FHIA 23, Maçã,

The objective of this work is to study the leaf area and biomass production of 4 sugarcane varieties in cane plant cycles, first and second regrowth. The experiment was conducted at Fazenda Jequiá in the state of Alagoas, Brazil. A randomized block design with 5 replications was used. The treatments were 4 cultivars: RB92579, SP813250, RB867515 and VAT90212. The length and width of the sheet + 3 were determined as well as the following parameters; the number of tillers per square meter, the number of green leaves, leaf area, and leaf area index in most growing sugarcane in the three crop cycles. The productivity of shoot dry biomass was determined at the time of cane maturity in 3 cycles. Univariate and multivariate analyses were performed. The larger leaf area index of 4.46 m 2 m -2 was observed for RB92579 in plant cane cycle. The dry biomass yield was not influenced by varieties having average values of 47, 41 and 31 t ha -1 in the sugarcane plant cycles in the first and second regrowth, respectively. The principal component analysis enabled us to identify from Current Population Survey (CPs) variance which component can contribute to the explanation of the data.

RESUMO -Neste trabalho objetivou-se avaliar a viabilidade das sementes de Catanduva (Piptadenia moniliformis Benth.) armazenadas por 210 dias, em ambiente controlado e condição ambiental não controlada (sala de laboratório), acondicionadas em saco plástico, saco de papel e frasco de vidro. O delineamento experimental foi inteiramente casualizado, em esquema de parcela sub-subdividida, com os ambientes alocados na parcela principal, as embalagens nas subparcelas, sendo as sub-subparcelas constituídas dos tempos de armazenamento (0, 30, 60, 90, 120, 150, 180 e 210 dias). Os ensaios foram realizados em laboratório e em casa de vegetação. Em laboratório foram avaliados, a cada 30 dias, a porcentagem de germinação e o índice de velocidade de germinação. Em casa de vegetação, a cada 30 dias, foi avaliada a emergência de plântulas. A germinação das sementes e a emergência das plântulas de catanduva decresceram em função do tempo de armazenamento durante 210 dias. As sementes de catanduva podem ser acondicionadas tanto em embalagem de vidro quanto em sacos plásticos sem perda do seu potencial fisiológico por 210 dias, sendo o ambiente controlado (18-20 ºC, ±60% UR) o mais adequado.Termos para indexação: Piptadenia moniliformis, armazenamento, viabilidade. STORAGE OF CATANDUVA SEED (Piptadenia moniliformis Benth.) IN DIFFERENT ENVIRONMENTS AND PACKAGINGABSTRACT -This study aimed to evaluate the viability of catanduva seeds stored for 210 days under controlled and uncontrolled environmental conditions (laboratory), in plastic, paper and glass packaging. The experimental design was completely randomized in a sub-subdivided plot, where the main plot were the storage conditions (laboratory and cold room) and sub-plots consisted of the packaging (plastic and paper bags and glass bottles) and sub-sub-plots of the storage times 28