Revista Caatinga最新文献_第6页

Discriminant analysis based on sheep carcass conformation and finishing scores 基于绵羊胴体形态和完成评分的判别分析

IF 0.9 4区农林科学

Revista Caatinga Pub Date : 2023-03-01 DOI: 10.1590/1983-21252023v36n121rc

Marilene dos S. Maciel, J. Arandas, F. Carvalho, G. R. Cruz, N. Ribeiro, M. N. Ribeiro

{"title":"Discriminant analysis based on sheep carcass conformation and finishing scores","authors":"Marilene dos S. Maciel, J. Arandas, F. Carvalho, G. R. Cruz, N. Ribeiro, M. N. Ribeiro","doi":"10.1590/1983-21252023v36n121rc","DOIUrl":"https://doi.org/10.1590/1983-21252023v36n121rc","url":null,"abstract":"ABSTRACT Carcass classification consists of grouping animals with similar carcass characteristics. When the groups are defined a priori, as in the case of conformation and finishing scores, the interest is to identify the contribution of each variable used in separating the groups. Therefore, discriminant analysis was used to discriminate Santa Inês animals according to the conformation and carcass finishing scores (score 2 = regular, score 3 = good) and to identify the variables that most contribute to the differentiation. The conformation and carcass finishing scores vary from 1 to 5. This study used scores 2 and 3, considering that the evaluated animals ranged between these two respective scales. The database consisted of information from 122 uncastrated Santa Inês sheep submitted to the confinement regime, of which 24 variables related to the carcass of the animals were recorded. Data were submitted to the Mardia test to verify multivariate normality, followed by the nonparametric k-nearest neighbor (k-NN) test. The stepwise procedure selected a particular subset of variables, and the Mahalanobis Distance (D2) was used to assess the separation of groups (p-value ˂ 0.05). The variables with the highest discriminatory power for the carcass conformation scores were cold carcass weight (CCW), external carcass length (ECL), and neck (NEC), for carcass finishing were live weight at slaughter (LWS), ECL, and thoracic perimeter (TP). The multivariate discriminant analysis proved efficient in allocating the animals in their groups of origin.","PeriodicalId":21558,"journal":{"name":"Revista Caatinga","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43159844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Nutrients in lettuce production in aquaponics with tilapia fish compared to that with hydroponics 罗非鱼鱼菜共生与水培生菜的营养成分比较

IF 0.9 4区农林科学

Revista Caatinga Pub Date : 2023-03-01 DOI: 10.1590/1983-21252023v36n103rc

Eglerson Duarte, E. Silva, F. D. C. Moreira, D. Braga, Shara G. dos Santos

{"title":"Nutrients in lettuce production in aquaponics with tilapia fish compared to that with hydroponics","authors":"Eglerson Duarte, E. Silva, F. D. C. Moreira, D. Braga, Shara G. dos Santos","doi":"10.1590/1983-21252023v36n103rc","DOIUrl":"https://doi.org/10.1590/1983-21252023v36n103rc","url":null,"abstract":"ABSTRACT In aquaponic systems, the residual water from the cultivation of fish is not enough to meet the nutritional demands of plants. The main objective of this study was to investigate how to adjust a nutritive solution for the cultivation of lettuce (Lactuca sativa L.) in aquaponics, based on hydroponics. The treatments included six separate crops of lettuce in an aquaponic system, while the hydroponic system served as the control. In each treatment, three blocks were used to quantify the parameters of ‘head’ diameter, number and dry weight of leaves, shoot dry weight, root dry weight, total dry weight, and the concentration and accumulation of nutrients in the total dry weight of the lettuce plants. The lower nutrient supply led to the occurrence of the lowest total dry weight in the C2 leaf crops when compared to that of the other crops of aquaponics, which had adequate time for system maturation. The system maturation and the use of a balanced solution in the C5 and C6 crops allowed the head diameter of the aquaponics plants to be equal to those of the hydroponics plants. In the aquaponic system, N and Fe were the most limiting macronutrient and micronutrient, respectively. To produce lettuce in an aquaponic system, it is necessary to ‘ripen’ the crop water for at least 30 days, and supplement micronutrients in the form of mineral fertiliser.","PeriodicalId":21558,"journal":{"name":"Revista Caatinga","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42205853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Morphological responses of maize hybrids under competition with hairy beggarticks 玉米杂交种在毛状元竞争下的形态反应

IF 0.9 4区农林科学

Revista Caatinga Pub Date : 2023-03-01 DOI: 10.1590/1983-21252023v36n105rc

L. Galon, A. A. D. Silva, L. Brunetto, T. S. Melo, J. M. Dill, G. Concenço

{"title":"Morphological responses of maize hybrids under competition with hairy beggarticks","authors":"L. Galon, A. A. D. Silva, L. Brunetto, T. S. Melo, J. M. Dill, G. Concenço","doi":"10.1590/1983-21252023v36n105rc","DOIUrl":"https://doi.org/10.1590/1983-21252023v36n105rc","url":null,"abstract":"ABSTRACT The study of competitive interactions between crops and weeds can be an important tool in integrated weed management. The objective of this work was to evaluate the competitive ability of maize hybrids in the presence of hairy beggarticks, testing different proportions of plants in the associations. For maize hybrids (Dekalb 230 PRO3, Pioneer 30F53 VYH, Brevant 2B433 PW, and Syngenta 505 VIP3) and for hairy beggarticks, the final density was 20 individuals pot-1, which was determined in preliminary experiments. Experiments were carried out on a substitutive series, on different combinations of the species, varying the relative proportions (100:0, 75:25, 50:50, 25:75, and 0:100%). The analysis of species competitiveness was performed using diagrams applied to the substitutive experiments and relative competitiveness indices. The maize hybrids showed less loss when reducing the morphological variables of the hairy beggarticks and demonstrated superiority in competitive ability in relation to the weed. Competition occurred between maize hybrids in the presence of hairy beggarticks, being negatively affected, regardless of the proportion of plants, causing reductions in plant height, stem diameter, leaf area, and dry mass. An average reduction of 10% and 86% of the MS of maize hybrids and weed was observed, respectively, when comparing the absence of competition with any associated densities, intraspecific competition being more harmful than interspecific. Maize hybrids and hairy beggarticks compete for the same environmental resources, with the crop being more competitive than the competitor.","PeriodicalId":21558,"journal":{"name":"Revista Caatinga","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41749641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Agro-bioeconomic feasibility of immature cowpea and beet cultivar combinations in a semi-arid environment 半干旱环境下未成熟豇豆与甜菜品种组合的农业生物经济可行性

IF 0.9 4区农林科学

Revista Caatinga Pub Date : 2023-03-01 DOI: 10.1590/1983-21252023v36n108rc

F. B. Bezerra Neto, Jeisy R. de S. Ribeiro, J. D. Lima, E. C. Santos, N. M. Guerra, R. L. C. Nunes

{"title":"Agro-bioeconomic feasibility of immature cowpea and beet cultivar combinations in a semi-arid environment","authors":"F. B. Bezerra Neto, Jeisy R. de S. Ribeiro, J. D. Lima, E. C. Santos, N. M. Guerra, R. L. C. Nunes","doi":"10.1590/1983-21252023v36n108rc","DOIUrl":"https://doi.org/10.1590/1983-21252023v36n108rc","url":null,"abstract":"ABSTRACT The objective of this work was to evaluate the agro-bioeconomic feasibility of immature cowpea and beet cultivar combinations in intercropping systems in a semi-arid environment. Experiments were carried out in two cropping years using a randomized block design with four replicates. The treatments consisted of four cowpea cultivars (‘BRS Tumucumaque,’ ‘BRS Cauamé,’ ‘BRS Guariba,’ and ‘BRS Itaim’) and two beet cultivars (‘Early Wonder’ and ‘Fortuna’). In each block of the experiments, plots in monocropping of the cultivars were sown as additional treatments to obtain the following agronomic and competition indexes and economic indicators: land equivalent ratio (LER), area time equivalent ratio (ATER), land use efficiency (LUE), beet equivalent production (BEP), competitive ratio (CR), crop aggressivity (A), gross income (GI), net income (NI), rate of return (RR), and corrected monetary advantage (CMA). The highest agro-bioeconomic efficiency of the tested intercropping systems was achieved in the combination of cowpea cultivar BRS Guariba and beet cultivar Fortuna. Beet behaved as the dominant crop, and cowpea as the dominated crop in all evaluated intercropping systems. The indexes and indicators demonstrated the complementarity and sustainability of the combination of cowpea cultivar BRS Guariba with beet cultivar Fortuna.","PeriodicalId":21558,"journal":{"name":"Revista Caatinga","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45464007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamics of plant organic matter decomposition in different agricultural landscapes 不同农业景观下植物有机质分解动态

IF 0.9 4区农林科学

Revista Caatinga Pub Date : 2023-03-01 DOI: 10.1590/1983-21252023v36n115rc

J. H. C. S. Silva, A. Barbosa, D. Gomes, I. S. Aquino, Janaína R. da Silva

{"title":"Dynamics of plant organic matter decomposition in different agricultural landscapes","authors":"J. H. C. S. Silva, A. Barbosa, D. Gomes, I. S. Aquino, Janaína R. da Silva","doi":"10.1590/1983-21252023v36n115rc","DOIUrl":"https://doi.org/10.1590/1983-21252023v36n115rc","url":null,"abstract":"ABSTRACT The functioning of ecosystems or agroecosystems is mainly dependent on the soil-litterfall interaction. Thus, the objective of this work was to evaluate the effect of different soil use and management systems on the dynamics of decomposition of plant residues of Azadirachta indica (neem) and Gliricidia sepium (gliricidia). The study was conducted in four land occupation systems, namely: remaining forest, agroforestry, agricultural mandala, and pasture. The decomposition rate was estimated using nylon bags (litter bags), containing 20 g of leaves of A. indica and G. sepium, which were arranged on the soil surface of each area for 18, 36, 54, 72, 90, and 108 days. A completely randomized design was used for each species, considering each area as one treatment, with four replications for each collection. The data were subjected to regression analysis and the means were compared by the Tukey's test (p<0.05). More than 85% and 90% of A. indica and G. sepium plant matters, respectively, had been decomposed after 108 days, regardless of the system evaluated, denoting that these species present high decomposition rates. The phytomass half-life time varied from 16 to 23 days for G. sepium and from 25 to 37 days for A. indica, depending on the land use system. Edaphic temperature, soil water content, and leaf physical and chemical characteristics are weight loss predictors. The results provide important information to enable forest management practices.","PeriodicalId":21558,"journal":{"name":"Revista Caatinga","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44236335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Plot size and number of repetitions in forage wheat 牧草小麦的小区大小和重复次数

IF 0.9 4区农林科学

Revista Caatinga Pub Date : 2023-03-01 DOI: 10.1590/1983-21252023v36n125rc

V. Bubans, A. Cargnelutti Filho, I. Neu, D. L. Silveira, F. M. Somavilla, B. F. Osmari

{"title":"Plot size and number of repetitions in forage wheat","authors":"V. Bubans, A. Cargnelutti Filho, I. Neu, D. L. Silveira, F. M. Somavilla, B. F. Osmari","doi":"10.1590/1983-21252023v36n125rc","DOIUrl":"https://doi.org/10.1590/1983-21252023v36n125rc","url":null,"abstract":"ABSTRACT Forage wheat (Triticum aestivum L.) is an annual crop, alternative for use as a ground cover crop in the winter period, in production systems in southern Brazil. Given its magnitude, research with field experiments is carried out and plot size definition is of great importance in the experimental design. The objectives of this study were to estimate the plot size and number of repetitions to evaluate the fresh matter of forage wheat and to investigate the variability of plot size among agricultural years, sowing dates and cultivars. Thirty-six uniformity trials were conducted (two agricultural years × three sowing dates × two cultivars × three repetitions). Plot size was determined by the method of maximum curvature of the coefficient of variation model. The number of repetitions was determined for experiments in completely randomized and randomized block designs in scenarios formed by the combinations of i treatments (i=3, 4, …, 50) and d least significant differences among treatment means to be detected as significant by the Tukey test, at 5% of significance, expressed as a percentage of the overall mean of the experiment (d=5%, 10%, …, 30%). The plot size to evaluate the fresh matter of forage wheat is 4.05 m2. Seven repetitions are sufficient to identify the fresh matter in completely randomized designs and randomized block designs with up to 50 treatments, making it possible to obtain least significant difference lower than or equal to 20% of the mean of the experiment.","PeriodicalId":21558,"journal":{"name":"Revista Caatinga","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42049288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biochemical differences in the initial growth of sugarcane varieties cultivated under different potassium doses and water conditions 不同施钾量和水分条件下甘蔗品种初期生长的生化差异

IF 0.9 4区农林科学

Revista Caatinga Pub Date : 2023-03-01 DOI: 10.1590/1983-21252023v36n107rc

Igor T. M. da Rocha, Anibia V. da Silva, F. J. Freire, E. Oliveira, Edivan R. de Souza, L. Endres

{"title":"Biochemical differences in the initial growth of sugarcane varieties cultivated under different potassium doses and water conditions","authors":"Igor T. M. da Rocha, Anibia V. da Silva, F. J. Freire, E. Oliveira, Edivan R. de Souza, L. Endres","doi":"10.1590/1983-21252023v36n107rc","DOIUrl":"https://doi.org/10.1590/1983-21252023v36n107rc","url":null,"abstract":"ABSTRACT Sugarcane varieties have distinct biochemical and productive capacities, which are accentuated under water and nutrient stress conditions. Water stress promotes biochemical changes in plants, such as the overproduction of reactive oxygen species (ROS) that, depending on the concentration, degrade photosynthetic pigments. Current research indicates that K+ plays an important role in increasing yield and tolerance to water stress. This study evaluated the effect of different K+ levels on the initial growth of two sugarcane varieties under two water conditions. The experiment was conducted in a greenhouse using randomized blocks, with four replications, five K+ doses (0; 0.5; 1; 2 and 6 mmol L-1), two sugarcane varieties (RB92579 and RB992506), and two water conditions (hydrated plants and water stress). Data were analyzed in a 5×2×2 factorial scheme. Leaf carbohydrates, photosynthetic pigments, antioxidant enzyme activity (catalase, superoxide dismutase and ascorbate peroxidase) and dry matter production were assessed. K+ doses promoted an increase in plant dry mass. The RB992506 variety had lower APX activity and higher levels of photosynthetic pigments, carbohydrates and dry matter than its RB92579 counterpart. Water conditions and interactions between factors had no effect on the variables studied. RB992506 is a promising variety and more tolerant to water stress due to its superior biochemical and productive traits when compared to RB92579.","PeriodicalId":21558,"journal":{"name":"Revista Caatinga","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47496313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Stocks of elements in radicular biomasses in different coverages in the cerrado of tocantins, Brazil 巴西托坎廷斯塞拉多不同覆盖范围的根状生物物质中元素的储量

IF 0.9 4区农林科学

Revista Caatinga Pub Date : 2023-03-01 DOI: 10.1590/1983-21252023v36n114rc

D. D. S. Lima, V. Piscoya, Moacyr Cunha Filho, M. M. Fernandes, R. R. Gomes Filho, R. N. D. Araújo Filho

{"title":"Stocks of elements in radicular biomasses in different coverages in the cerrado of tocantins, Brazil","authors":"D. D. S. Lima, V. Piscoya, Moacyr Cunha Filho, M. M. Fernandes, R. R. Gomes Filho, R. N. D. Araújo Filho","doi":"10.1590/1983-21252023v36n114rc","DOIUrl":"https://doi.org/10.1590/1983-21252023v36n114rc","url":null,"abstract":"ABSTRACT Root biomass plays a vital role in nutrient cycling for the maintenance and functioning of different ecosystems. In this context, this study aimed to determine the stocks of elements in root biomass under different covers in the Cerrado of Tocantins, Brazil. The research was conducted in different vegetal coverings: agriculture, pasture, Eucalyptus sp., and native Cerrado forest. Root biomass was collected in six trenches, 70 x 70 cm, and a depth of 50 cm through sieving. Macro and microelement stocks were determined in root biomass. Macros and microelements showed higher average values for the native forest. With the change in vegetation cover, N, P, and S were higher in agriculture, with stocks of 1.82 Mg ha-1, 1.83 Mg ha-1, and 9.6 Mg ha-1. In a planted forest of Eucalyptus sp., macroelements K, Ca, and Mg were higher, with stock values of 16.06 Mg ha-1, 25.91 Mg ha-1, and 5.02 Mg ha-1, and microelements, B, Cu, Fe, Mn, and Zn with values of 0.05 Mg ha-1, 0.04 Mg ha-1, 5 Mg ha-1, 0.7 Mg ha-1, and 0.08 Mg ha-1 in root biomass, respectively. Thus, the planted forest of Eucalyptus sp. promoted greater stocks and cycling of elements, with greater stability of the organic material.","PeriodicalId":21558,"journal":{"name":"Revista Caatinga","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47651766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization of cowpea cultivars for grain size, color, and biofortification 豇豆品种籽粒大小、颜色及生物强化特性研究

IF 0.9 4区农林科学

Revista Caatinga Pub Date : 2023-03-01 DOI: 10.1590/1983-21252023v36n122rc

Maria do Perpetuo Socorro C. Martins, A. F. D. S. Lopes, Abdias Jean, K. J. Damasceno-Silva, M. D. C. D. C. E. Martins, M. M. Rocha

{"title":"Characterization of cowpea cultivars for grain size, color, and biofortification","authors":"Maria do Perpetuo Socorro C. Martins, A. F. D. S. Lopes, Abdias Jean, K. J. Damasceno-Silva, M. D. C. D. C. E. Martins, M. M. Rocha","doi":"10.1590/1983-21252023v36n122rc","DOIUrl":"https://doi.org/10.1590/1983-21252023v36n122rc","url":null,"abstract":"ABSTRACT Cowpea crops have high socioeconomic importance in the Northeast region of Brazil. These crops generate employment and income; in addition, it is an excellent source of protein, minerals, vitamins, and dietary fiber, and contributes to the food security of thousands of people. Biofortification of cowpea with iron, zinc, and proteins can contribute to prevent the higher hunger. The objective of this work was to assess iron, zinc, and protein contents in cowpea grains of different cultivars and the effect of grain size and color on the contents of these nutrients. Twenty-four cultivars with variation in size and color of the seed coat were evaluated. Iron contents ranged from 7.12 to 8.60 mg 100 g-1, with an overall mean of 7.75 mg 100 g-1. Zinc contents ranged from 4.46 to 4.93 mg 100 g-1, with an overall mean of 4.71 mg 100 g-1. Protein contents ranged from 31.50 to 36.24 g 100 g-1, with an overall mean of 33.57 g 100 g-1. Grain size ranged from 13.55 to 37.88 g, with an overall mean of 21.50 g. The cultivars Caldeirão, BRS-Guariba, and Pingo-de-Ouro-1-2 have higher iron contents; BRS-Aracê and BRS-Imponente have higher zinc contents; BR-14-Mulato, BRS-Guariba, BRS-Aracê, and BRS-Inhuma, have higher protein contents; and BR-3-Tracuateua and BRS-Imponente have larger grain sizes. The size and color of the seed coat do not influence the iron, zinc and protein contents of the evaluated cowpea cultivars.","PeriodicalId":21558,"journal":{"name":"Revista Caatinga","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46416623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Agronomic characteristics and quality of lettuce cultivars in different crop seasons in western Alagoas, Brazil 巴西阿拉戈斯西部不同季节生菜品种的农艺特性和品质

IF 0.9 4区农林科学

Revista Caatinga Pub Date : 2023-03-01 DOI: 10.1590/1983-21252023v36n112rc

Dalbert de F. Pereira, T. R. D. Silva, Winandy. A. Freire, Ê. G. Souza, E. A. Cruz, R. M. Feitosa

{"title":"Agronomic characteristics and quality of lettuce cultivars in different crop seasons in western Alagoas, Brazil","authors":"Dalbert de F. Pereira, T. R. D. Silva, Winandy. A. Freire, Ê. G. Souza, E. A. Cruz, R. M. Feitosa","doi":"10.1590/1983-21252023v36n112rc","DOIUrl":"https://doi.org/10.1590/1983-21252023v36n112rc","url":null,"abstract":"ABSTRACT Growing lettuce under high temperatures and light incidence, as in the Alagoas State hinterland, Brazil, induces early tasseling and decreases the quality of the product. Thus, the objective of this work was to evaluate the production and post-harvest quality of lettuce cultivars in different crop seasons in western Alagoas, Brazil. A randomized block experimental design was used, with four replications. The treatments consisted of lettuce cultivars: Baba-de-Verão, Cinderela, Elba, Mônica, Solaris, and Veneranda. The winter crop was more favorable for plant diameter, except for Baba-de-Verão, whose performance was similar in both seasons and stood out in the summer. The winter crop resulted in better performance in plant height, stem diameter, and fresh matter yield, whereas summer plants reached larger number of leaves. The cultivar Mônica presented longer stem length, denoting lower tolerance to early tasseling and, therefore, it is not indicated to be grown in the region. The cultivar Baba-de-Verão (Lisa group) reached higher fresh matter yield, number of leaves per plant, and stem diameter, and it was the most adequate cultivar to be grown in western Alagoas. Elba, Solaris, and Veneranda were the lettuce cultivars from the Crespa group that stood out. Baba-de-Verão was the cultivar that presented the best performance for chlorophyll a, b, and total. The cultivar Solaris presented the highest carotenoid contents. Plants grown in the winter reached higher chlorophyll a and total, carotenoid contents, pH, and soluble solid (SS) to titratable acidity (TA) ratio, whereas the lettuce grown in the summer had higher SS and TA.","PeriodicalId":21558,"journal":{"name":"Revista Caatinga","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46433276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0