Bayesian analysis of quantitative traits in popcorn (Zea mays L.) through four cycles of recurrent selection     

Antonio Teixeira do Amaral Junior  Ismael Lourenço de Jesus Freitas  Amanda Gonçalves Guimarães  Carlos Maldonado  Osvin Arriagada 《Plant Production Science》2016,19(4):574-578

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Reproductive Performance of Gilts with Similar Age but with Different Growth Rate at the Onset of Puberty Stimulation   总被引：1，自引：0，他引：1  

R Kummer  ML Bernardi  AC Schenkel  WS Amaral Filha  I Wentz  FP Bortolozzo 《Reproduction in domestic animals》2009,44(2):255-259

The aim of this study was to evaluate the reproductive performance of gilts that had a similar age but different weights at the onset of puberty stimulation by boar exposure at 144 days. Gilts were divided into two groups according to their lifetime growth rate from birth to approximately 144 days of age. Mean growth rates at this moment were 577 and 724 g/day for group 1 (G1; n = 58) and group 2 (G2; n = 58), respectively. After selection, gilts were weighed at approximately 155, 165 and 175 days of age, on the insemination day and at slaughter. Gilts were inseminated, on average, at 193 days of age and were slaughtered 32 days after insemination, when the number of corpora lutea and embryos were recorded. Higher growth rate gilts (G2) reached puberty earlier (155.3 vs 164.1 days; p < 0.01). More gilts of G2 group attained puberty by 190 days of age (p = 0.004) than G1 gilts (95%; 55/58 vs 76%; 44/58). The anoestrous rate, until 60 days after the onset of boar exposure was higher (p < 0.01) in G1 (19.0%; 11/58) than in G2 (3.4%; 2/58) group. However, there were no differences in the pregnancy rate (90.7 vs 94.5), ovulation rate (15.9 vs 16.5), total embryos (12.9 vs 11.7), viable embryos (12.0 vs 11.1) and embryo survival (73.7% vs 68.5%), between G1 gilts and G2 gilts, respectively (p > 0.05). High growth rate gilts attain puberty earlier and have a lower anoestrous rate than low growth rate gilts.  相似文献   

Comparison of Stunning Methods on the Physicochemical Properties of Frozen Nile Tilapia (Oreochromis niloticus) Fillets     

Paulo Roberto Campagnoli de Oliveira Filho  Paulo José do Amaral Sobral  Julio César de Carvalho Balieiro 《Journal Of Aquatic Food Product Technology》2017,26(3):325-334

This study compares how CO₂ narcosis and thermal shock affect the physicochemical aspects of Nile tilapia fillets held frozen (?18°C) for up to 6 months. The characteristics of tilapia fillets subjected to CO₂ narcosis were those of higher lightness and whiteness and lower redness. The hardness values of fillets of tilapia subjected to thermal shock were lower than those subjected to CO₂ narcosis. During frozen storage to both treatments, the drip loss, denaturation of myosin, and lipid oxidation increased, while fillet water holding capacity and hardness decreased. The physicochemical properties of frozen fillets of tilapia stunned by CO₂ narcosis were considered more desirable; therefore, the method can be a potential replacement to thermal shock.  相似文献   

Effect of Trichoderma viride pre-inoculation in pine species with different levels of susceptibility to Fusarium circinatum: physiological and hormonal responses     

J. Amaral  G. Pinto  J. A. Flores-Pacheco  J. J. Díez-Casero  A. Cerqueira  P. Monteiro  A. Gómez-Cadenas  A. Alves  J. Martín-García 《Plant pathology》2019,68(9):1645-1653

Pine pitch canker (PPC), caused by Fusarium circinatum, affects Pinus species worldwide. Although no effective solutions have yet been found to control it, there is a growing interest in using biological control agents (BCA) such as Trichoderma to avoid the application of chemical-based products. Using species with an increasing level of susceptibility to PPC (Pinus pinea, Pinus pinaster and Pinus radiata), this study aimed to evaluate the effect of Trichoderma viride pre-inoculation on disease development, assessing several physiological and hormonal parameters. A 2-week period elapsed between T. viride and F. circinatum inoculation. Sampling for each species was performed independently when at least 50% of the plants of one of the inoculated groups developed disease symptoms. Fusarium circinatum infection reduced water status and photosynthesis, but increased proline, abscisic acid and jasmonic acid concentrations in plants of P. radiata and P. pinaster with symptoms; while in P. pinea water relations were maintained and anthocyanin accumulation occurred in the presence of F. circinatum. In P. radiata, T. viride pre-inoculation accelerated disease progression, with some PPC-induced responses augmented (decreased water potential and photosynthesis; increased substomatal CO₂ concentration) and novel changes not found in seedlings inoculated exclusively with F. circinatum (increased electrolyte leakage and salicylic acid; decreased relative water content). This suggests that T. viride may be initially recognized as an invading organism, subverting the plant defence mechanisms for successful root colonization. If seedlings are not allowed to recover from this state, pathogen infection may thus be facilitated, highlighting the importance of application timing in BCA strategies.  相似文献   

Environmentally friendly methods for controlling pine pitch canker     

J. Martín-García  R. Zas  A. Solla  S. Woodward  J. Hantula  E. J. Vainio  M. Mullett  C. Morales-Rodríguez  A. Vannini  P. Martínez-Álvarez  G. Pinto  A. Alves  J. Amaral  M. J. Wingfield  G. Fourie  E. T. Steenkamp  R. Ahumada  B. Šerá  A. V. Sanz-Ros  R. Raposo  M. Elvira-Recuenco  E. Iturritxa  T. R. Gordon  J. J. Diez 《Plant pathology》2019,68(5):843-860

Fusarium circinatum is a highly virulent invasive pathogen that causes the disease commonly known as pine pitch canker (PPC). On mature trees, the most common symptoms of PPC include resin bleeding, resinous cankers, wilting of needles and dieback. In nurseries the main symptoms are yellowish needles, and wilting of foliage and shoots. PPC is considered one of the most important diseases of conifers globally and at least 60 species of Pinus along with Pseudotsuga menziesii are known to be susceptible. Quarantine regulations are crucial to minimize the risk of new introductions into disease-free countries. However, if these measures fail, implementation of environmentally friendly control methods is currently encouraged in an integrated management approach that minimizes the use of chemicals in forests. This review therefore summarizes current knowledge of biological control using endophytic fungi, bacteria and viruses, and other environmentally friendly methods to control PPC, including thermotherapy, natural products with fungicidal effects, promoters of innate host resistance mechanisms and breeding for resistance. Key research gaps to be addressed for improvement of effective management of this disease are discussed.  相似文献   

Sublethal effects of spirodiclofen on biological and demographic parameters of the citrus leprosis mite Brevipalpus yothersi (Acari: Tenuipalpidae)     

Ingrid Amaral  Cirano C Melville  Claudiane M Rocha  Jaqueline F Della Vechia  Thais J Prado  Daniel J Andrade 《Pest management science》2020,76(5):1874-1880

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Resistance of Spodoptera frugiperda (Lepidoptera: Noctuidae) to spinetoram: inheritance and cross‐resistance to spinosad     

Ewerton C Lira  Anderson Bolzan  Antonio RB Nascimento  Fernando SA Amaral  Rubens H Kanno  Ingrid S Kaiser  Celso Omoto 《Pest management science》2020,76(8):2674-2680

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