Functional Plant Breeding Journal <div style="text-align: justify;"> <p>The FPBJ – Functional Plant Breeding Journal – constitutes an important instrument for the publication of original research papers related to plant breeding. The FPBJ aims to publish original research papers focusing on the cultivar development. In this sense, it covers topics related to germplasm and breeding methods such as recurrent selection, backcrossing, mating designs, breeding programs. It also comprises methodological, statistical, computational and molecular advances when used in the context of the cultivar development. The FPBJ covers all annual and perennial crop species.</p> </div> en-US (Antonio Teixeira do Amaral Junior, UENF - Senior Editor) (Alexandre Pio Viana, UENF - Executive Editor) Fri, 17 Aug 2018 21:42:54 +0000 OJS 60 CONTRASTING PHOSPHORUS ENVIRONMENTS AS INDICATORS FOR POPCORN BREEDING LINES <div style="text-align: justify;">Phosphorus (P) is one of the most limiting factors in low investment agricultural systems. The aim of this study was to evaluate a panel of 29 popcorn maize lines to identify potential genotypes to be developed under P restriction conditions for integration into a breeding program. For this, these lines were phenotyped for complex traits of the shoot, root, and phosphorus use efficiency (PUE) at contrasting and controlled P environments (standard and low P contents of 22 and 4 mg dm−3, respectively) and genotyped with 15 SSR–EST markers. The results indicated that through selection in shoot traits it is possible to obtain indirect gains in traits related to root development that are difficult to measure. In addition, the selection based on traits of shoot and root development at an environment promotes indirect gains in another environment. In the environment supplied with low P, the P uptake were more important for PUE than internal utilization <br>of P. Lines P2, P4, P7, and P9 presented a better development of shoot and root system at the P-low environment, in addition to showing P content above the average in root and shoot. Based on genetic diversity, complementary and inheritance crosses were identified.</div> Thiago Rodrigues da Conceição Silva, Antônio Teixeira do Amaral Júnior, Janeo Eustáquio de Almeida Filho, Marta Simone Mendonça Freitas, Amanda Gonçalves Guimarães, Samuel Henrique Kamphorst ##submission.copyrightStatement## Fri, 17 Aug 2018 00:00:00 +0000 BREEDING PASSION FRUIT POPULATIONS - REVIEW AND PERSPECTIVES <div style="text-align: justify;">Passion fruit tree belongs to the family Passifloraceae. The genus Passiflora is considered of great economic value, and the main species cultivated is Passiflora edulis Sims. Brazil is the largest world producer of passion fruit, with annual production of around 823 thousand tons. In order to meet the demand for fruits from both domestic and international markets, as well as from the fresh consumption market and industry, the genetic breeding of this species has proved to be the major connection between farmers and the consumer market. Therefore, the Universidade Estadual do Norte Fluminense Darcy Ribeiro has been developing a passion fruit breeding program since 2002 and has recently launched a new variety – UENF Rio Dourado – which is already available to farmers. Aiming to overcome all obstacles for cultivation, the passion fruit genetic breeding program carried out by the UENF seeks to obtain the genetic progress of the crop and <br>provide new cultivars even more productive and more resistant to the main pathogens of this species. Thus, this work aims to carry out a survey on the breeding of the crop and report future prospects made possible by the introduction of new techniques into the sour passion fruit breeding program.</div> Rodrigo Moreira Ribeiro, Alexandre Pio Viana, Eileen Azevedo Santos, Daniele Lima Rodrigues, Sandra da Costa Preisigke ##submission.copyrightStatement## Fri, 17 Aug 2018 00:00:00 +0000 AGRONOMIC EVALUATION OF SUNFLOWER CULTIVARS ADAPTED TO NORTHERN FLUMINENSE CONDITIONS AND GROWN FOR BIOMASS PRODUCTION <div style="text-align: justify;">The growing interest in oil seeds in Brazil, mainly in sunflower, was boosted by the introduction of biodiesel in the market, and by the species excellent physical-chemical and nutritional characteristics, which intensified the search for more productive cultivars adapted to specific cultivation regions. The aim of the present study is to feature and assess five sunflower varieties (BRS 321, Embrapa 122, Helio 253, Multissoland Uguara 04) in order to find the best varieties to the Northern Fluminense region. The experiment was conducted at PESAGRO-RIO Experimental Station, which is located in Campos dos Goytacazes County, Rio de Janeiro State. Grain phenological, morphological and yield characteristics were assessed. The F test at 1% significance level showed significant effect <br>between varieties. Variety Helio 253 stood out as the most adapted to the soil and climatic conditions in the region. It was the most productive variety; 3,285.2 kg.ha-1 on average. Such outcome is correlated to its low plant height (1.24 m). This feature is favorable for the high incidence of wind in the regions, since it avoids damages to the stem and plant lodging.</div> Avelino dos Santos Rocha, Camila Queiroz da Silva Sanfim de Sant’Anna, Geovana Cremonini Entringer, Rogério Figueredo Daher, Geraldo de Amaral Gravina, Ziraldo Moremos dos Santos ##submission.copyrightStatement## Fri, 17 Aug 2018 00:00:00 +0000 CORRELATIONS AND PATH ANALYSIS IN CHERRY TOMATO GENOTYPES <div style="text-align: justify;">Tomato is one of the most consumed vegetables in the world and in Brazil due to its nutritional and organoleptic quality and excellent flavor. This study aimed to evaluate the correlation among primary and secondary production components and their unfolding into direct and indirect effects on the total soluble solids content of cherry tomato genotypes. Five cherry tomato lines were crossed in complete diallel scheme of Griffing, Method 1, and parents and the 20 F1 hybrids were evaluated for the traits: number of bunches per plant, number of flowers per bunch, number of fruits per bunch, number of fruits per plant, fruit weight, fruit yield and total soluble solids. Analysis of variance was performed considering information between and within plot. Subsequently, phenotypic and genotypic <br>correlations were estimated, followed by path analysis. Genotypic correlations among the traits showed similar magnitude and same direction of their respective phenotypic correlations. Path analysis explained 92.2% of the variation on the total soluble solids among the evaluated genotypes. Based on the results obtained, it is possible to infer that <br>the selection of yielding genotypes is the main strategy to increase the content of soluble <br>solids in cherry tomatoes.</div> Felipe Barrera Sánchez, Larissa Pereira Ribeiro, Erina Vitório Rodrigues, Leonardo Lopes Bhering, Paulo Eduardo Teodoro ##submission.copyrightStatement## Fri, 17 Aug 2018 00:00:00 +0000 HETEROSIS AND COMBINING ABILITY FOR GRAIN YIELD AND EARLINESS IN ACCESSIONS OFA RICE CORE COLLECTION <div style="text-align: justify;">Rice has extensive collections of germplasm, but a small fraction of genotypes are used in breeding programs worldwide. This aimed to assess the heterosis and the combining ability for higher grain yield and earliness, and their correlations to genetic distance among accessions belonging to the Embrapa´s Rice Core Collection. Crosses were made in complete diallel, without the reciprocals, being phenotyped in generations F2 and F7for grain yield (GY) and days to flowering (DTF). It were estimated the varietal effect, mean heterosis, varietal heterosis, specific combining abilityand general combining ability (GCA) of the parents in <br>each generation. For the selection of new lines, the combinations involving the genitors with the highest magnitudes and positive effects for GCA were onsidered more promising for the GY, of which Canela Curta, Maninjau, Epagri 108 and Diamante stood out, and were also the most productive. For the DTF, the genitors with the largest earliness estimates were Araguaia, CT11632, Irat 122, Pratinha Branco and Tox 503. The recommended parameters for estimating GY in F7 eneration from the data of the F2 generation were the mean of GY, GCA and the mean Rogers-W genetic distance coefficient. Crosses with Rogers-W distance <br>coefficients above 0.9 showed higher GY and earliness in F7 generation, whereas in F2 the superior crosses were those that showed Rogers-W between 0.7 and 0.89. The above genotypes and the specific combinations identified may lead to new rice cultivars.</div> Mariana Rodrigues Feitosa Ramos, João Antônio Mendonça, Rosana Pereira Vianello, Odilon Peixoto de Morais Júnior, José Manoel Colombari, Tereza Cristina de Oliveira Borba, Adriano Pereira de Castro, Claudio Brondani ##submission.copyrightStatement## Fri, 17 Aug 2018 00:00:00 +0000 GENETIC VARIABILITY ON NUTRIENT CONTENTS IN Coffea canephora GENOTYPES CULTIVATED AT 850 METERS OF ALTITUDE IN TWO CROP SEASONS <div style="text-align: justify;">The variation in the climatic conditions throughout the year can influence the foliar nutrient contents in Coffea canephora, impacting the fertilization management. We evaluated the influence of the climatic seasonality on the foliar nutrient contents of 28 C. canephora genotypes cultivated at 850 meters of altitude, in cold winter. The work was carried out in Morrinhos, State of Goiás, Brazil. A randomized complete block design in a 2 x 28 factorial arrangement was used, with two crop seasons, winter and summer, and 28 C. canephora genotypes, with four replications, each replicate composed by five plants, and a spacing of 3.5 m x 1.0 m. The third and fourth pairs of leaves, of productive branches located in the middle third of the plant, were collected in six-year-old crops. The leaves were dried, and the mineral contents were analyzed, they were, then, subjected to multivariate analysis of principal components, dissimilarity and clustering. The results reveal the existence of different nutritional contents among leaves collected in the winter and summer. There is a tendency of higher macro and icronutrient contents in leaves collected in the winter than in the summer. The nutritional diagnosis should consider the group of genotypes and the crop season.</div> Madlles Queiroz Martins, Fábio Luiz Partelli, Adésio Ferreira, Carolina de Oliveira Bernardes, Adelmo Golynski, Henrique Duarte Vieira, Marta Simone Mendonça Freitas, José Cochicho Ramalho ##submission.copyrightStatement## Fri, 17 Aug 2018 00:00:00 +0000