Ciencia E Investigacion Agraria最新文献

Strategy for suppressing redox stress during tomato (Solanum lycopersicum L.) seed germination 番茄种子萌发过程中氧化还原胁迫的抑制策略

Ciencia E Investigacion Agraria Pub Date : 2019-12-17 DOI: 10.7764/rcia.v46i3.2016

P. Arce-Amezquita, Kevin Max-Rodriguez, Ayenia Carolina Rosales-Niebla, F. H. R. Espinoza

引用次数: 0

Effect of Unconventional Oils on in Vitro Rumen Methane Production and Fermentation 非常规油对体外瘤胃甲烷生成及发酵的影响

Ciencia E Investigacion Agraria Pub Date : 2019-12-17 DOI: 10.7764/rcia.v46i3.2062

M. Embaby, M. Günal, A. Abughazaleh

{"title":"Effect of Unconventional Oils on in Vitro Rumen Methane Production and Fermentation","authors":"M. Embaby, M. Günal, A. Abughazaleh","doi":"10.7764/rcia.v46i3.2062","DOIUrl":"https://doi.org/10.7764/rcia.v46i3.2062","url":null,"abstract":"The effects of unconventional oils high in polyunsaturated fatty acids (PUFAs) (blackberry, blueberry, raspberry, pomegranate, black seed and hemp oils) on in vitro rumen fermentation and methane (CH4) production were examined in a 24-h batch culture experiment. Treatments consisted of a control (no oil supplement), a control plus corn oil, or a control plus the unconventional oils. Oils were added to rumen cultures at 500 mg L-1 (equivalent to 3.3 g oil.kg-1 of dietary dry matter (DM)). After 24 h of incubation, CH4 production was not different between the control and the corn oil treatment. Of the six unconventional oils tested, only the hemp and blueberry oils reduced CH4 production by 10-16% relative to that of the control and corn oil treatments. Dry matter degradability and total volatile fatty acids (VFAs) were not affected by the addition of oils. Except for a reduction in the acetate concentration with the raspberry and hemp oils, all tested unconventional oils had no effects on fermentation and the VFA profile relative to those of the control. In conclusion, our results showed that hemp and blueberry oils were moderately effective in reducing rumen CH4 formation without compromising rumen fermentation and digestibility.","PeriodicalId":50695,"journal":{"name":"Ciencia E Investigacion Agraria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48355874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Enological Frontier of the Southern Cone of America: Cabernet-Sauvignon in Chile and Malbec in Argentina 美洲南锥体的酿酒前沿:智利的赤霞珠和阿根廷的马尔贝克

Ciencia E Investigacion Agraria Pub Date : 2019-12-17 DOI: 10.7764/rcia.v46i3.1956

P. Lacoste, P. Pszczólkowski

{"title":"Enological Frontier of the Southern Cone of America: Cabernet-Sauvignon in Chile and Malbec in Argentina","authors":"P. Lacoste, P. Pszczólkowski","doi":"10.7764/rcia.v46i3.1956","DOIUrl":"https://doi.org/10.7764/rcia.v46i3.1956","url":null,"abstract":"The article examines the causes of the enological frontier of the Southern Cone of America, located in the Andes Mountains, with the predominance of the Malbec variety to the east of the Andes (Argentina) and of Cabernet-Sauvignon to the west (Chile). It was discovered that this wine boundary was established in the 19th century, when Cabernet-Sauvignon exceeded Malbec with a ratio of nine to one in Chile, while in Argentina, Malbec represented 75% of the national viticulture. The cause of this divergence is found in the different vinicultural subjects who led the process of expanding and consolidating the French paradigm in each country. In Chile, this role fitted the national bourgeoisie, who were used the capital accumulated in mining, finance and other activities to further the viticulture in their country. The bourgeoisie could abide by a technical mandate that preached the enological superiority of Cabernet-Sauvignon. In contrast, in Argentina, the architects of the expansion were the poor peasants who became small winegrowers. The shortage of capital led them to find a more productive variety, and their conviction led them to persist in the cultivation of Malbec. The rebellion of small winegrowers against the mandate of technocrats laid the foundation for the emergence of Malbec as an emblematic grapevine of Argentina.","PeriodicalId":50695,"journal":{"name":"Ciencia E Investigacion Agraria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44625207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of pre- and postpartum body development on the rebreeding of first-calf heifers 产前产后体发育对初产母牛再繁殖的影响

Ciencia E Investigacion Agraria Pub Date : 2019-12-17 DOI: 10.7764/rcia.v46i3.1984

Guilherme Joner, D. C. A. Filho, I. L. Brondani, S. M. Adams, A. F. D. Moura, Gilmar dos Santos Cardoso, M. B. Silva, P. Cattelam

{"title":"Effect of pre- and postpartum body development on the rebreeding of first-calf heifers","authors":"Guilherme Joner, D. C. A. Filho, I. L. Brondani, S. M. Adams, A. F. D. Moura, Gilmar dos Santos Cardoso, M. B. Silva, P. Cattelam","doi":"10.7764/rcia.v46i3.1984","DOIUrl":"https://doi.org/10.7764/rcia.v46i3.1984","url":null,"abstract":"The objective of this study was to evaluate the effect of live weight and body condition score, measured at different growth stages, on the rebreeding of first-calf heifers. A total of 120 Nellore and Charolais crossbred heifers born between 2004 and 2008 were assessed. Their average age was 26±1 months, they were all from the same herd, and they received the same management from birth. To conduct this study, pre- and postpartum measurements of first-calf heifers were taken. The data were submitted to analysis of variance, and the means were compared using Student’s t-test at a significance level of α=0.05. A higher live weight of the heifer at 24 months enabled early calving within the first calving season (r=-0.30). First-calf heifers that rebred had a higher live weight at weaning (361 kg vs. 333 kg) than those that did not, although their live weights at calving were similar (344 kg vs. 332 kg). The rebreeding of first-calf heifers that gave birth with the same body condition score as in the first calving was dependent on positive live weight gain until the end of the following breeding season, especially during the calving-weaning period.","PeriodicalId":50695,"journal":{"name":"Ciencia E Investigacion Agraria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47124970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Application of chlorine dioxide (ClO2) and marine yeasts to control postharvest anthracnose disease in mango (Mangifera indica L.) 二氧化氯和海洋酵母防治芒果采后炭疽病的应用

Ciencia E Investigacion Agraria Pub Date : 2019-12-17 DOI: 10.7764/rcia.v46i3.2005

J. J. Reyes, S. Vero, E. Díaz-Rivera, Liliana Lara-Capistrán, Juan Carlos Noa-Carrazana, L. Hernández-Montiel

引用次数: 3

Prevalence of the tracheal mite Acarapis woodi (Rennie) in Chile 智利木螨(cararapis woodi, Rennie)的流行

Ciencia E Investigacion Agraria Pub Date : 2019-12-17 DOI: 10.7764/rcia.v46i3.1991

N. Durán, Patricia Andrea Henríquez, P. Aldea

引用次数: 1

Calibration models for the nutritional quality of fresh pastures by nearinfrared reflectance spectroscopy 用近红外反射光谱法标定新鲜牧草营养品质模型

Ciencia E Investigacion Agraria Pub Date : 2019-12-17 DOI: 10.7764/rcia.v46i3.2020

I. Lobos, Cristian J. Moscoso, Paula Pavez

{"title":"Calibration models for the nutritional quality of fresh pastures by nearinfrared reflectance spectroscopy","authors":"I. Lobos, Cristian J. Moscoso, Paula Pavez","doi":"10.7764/rcia.v46i3.2020","DOIUrl":"https://doi.org/10.7764/rcia.v46i3.2020","url":null,"abstract":"High levels of animal performance and health depend on high-quality nutrition. Determining forage quality both reliably and quickly is essential for improving animal production. The present study describes the use of near infrared reflectance spectroscopy (NIRS) for the quantification of nutritional quality (dry matter (DM), water-soluble carbohydrates (WSC), crude protein (CP), in vitro dry matter digestibility (DMD), organic matter digestibility (OMD), neutral detergent fiber (NDF) and the WSC/CP ratio) in samples from fresh pastures in southern Chile (39° to 40° S). Calibration models were developed with wet chemistry and NIRS spectral data using partial least squares regression (PLSR). The coefficients of determination in the validation set ranged between 0.69 and 0.93, and the error of prediction varied from 0.064 to 2.89. The evaluation of the model confirmed the high predictive ability of NIRS for DM and CP and its low predictive ability for DMD, OMD, NDF and the WSC/CP ratio. It was not possible to obtain a model for WSC because it would have required an increased number of samples to improve the spectral variability and the R2 value (> 80%).","PeriodicalId":50695,"journal":{"name":"Ciencia E Investigacion Agraria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71303782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Carryover of tembotrione and atrazine in sugar beet tembotrione和atrazine在甜菜中的残留

Ciencia E Investigacion Agraria Pub Date : 2019-12-17 DOI: 10.7764/rcia.v46i3.2006

G. P. Carneiro, A. F. Bontempo, F. Guimarães, M. R. Reis, D. V. Silva, Matheus de Freitas Souza, H. Lins

引用次数: 3

Root variability among yellow lupin (Lupinus luteus L.) accessions grown at low temperatures in an undisturbed substrate 在未受干扰的基质中低温生长的黄苹(Lupinus luteus L.)材料的根系变异

Ciencia E Investigacion Agraria Pub Date : 2019-12-17 DOI: 10.7764/rcia.v46i3.1942

C. Osorio, Gustavo A del Canto, Annally R. Rupayan, Nicole Lichtin, I. Maureira-Butler

{"title":"Root variability among yellow lupin (Lupinus luteus L.) accessions grown at low temperatures in an undisturbed substrate","authors":"C. Osorio, Gustavo A del Canto, Annally R. Rupayan, Nicole Lichtin, I. Maureira-Butler","doi":"10.7764/rcia.v46i3.1942","DOIUrl":"https://doi.org/10.7764/rcia.v46i3.1942","url":null,"abstract":"Root variation has become an important target for geneticists, ecologists, and breeders, given its direct influence on plant adaptation, resilience to climate change, and biomass and seed yields. However, the underground nature of roots has limited the assessment of root variability in plant species. In this study, we evaluated several root traits in a sample of distinct yellow lupin accessions grown under cold conditions and at three time points. Analyses of variance showed a highly significant accession (genotype) effect on primary root length (PRL), primary root area (PRA), and total root area (TRA), indicating that at least part of the root variation was explained by a genetic component. Significant accession*time interactions for PRL and PRA suggested that root growth rates (assessed using these traits) may change over time across genotypes; however, a more extensive study including a larger number of accessions and growing times must be conducted to confirm this finding. Differences among L. luteus accessions in PRL, PRA and TRA suggest the existence of favorable variation in plantlet root traits and the possibility of breeding stronger and better-established yellow lupin plants when grown under cold conditions.","PeriodicalId":50695,"journal":{"name":"Ciencia E Investigacion Agraria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45479644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Castor seed yield at suboptimal soil moisture: Is it high enough? 在次优土壤湿度条件下的蓖麻种子产量：足够高吗？

Ciencia E Investigacion Agraria Pub Date : 2019-12-17 DOI: 10.7764/rcia.v46i3.2046

Mali Nay Buendía Tamariz, R. T. Calzada, I. S. Cohen, Arnoldo Flores Hernández, M. A. V. Valle, A. P. Sandoval

{"title":"Castor seed yield at suboptimal soil moisture: Is it high enough?","authors":"Mali Nay Buendía Tamariz, R. T. Calzada, I. S. Cohen, Arnoldo Flores Hernández, M. A. V. Valle, A. P. Sandoval","doi":"10.7764/rcia.v46i3.2046","DOIUrl":"https://doi.org/10.7764/rcia.v46i3.2046","url":null,"abstract":"This study discusses how soil moisture influences the seed yield of two castor plant varieties in an arid zone in Mexico. An experiment was set up with two factors: soil moisture, with three levels (high = -0.05 MPa, medium = -0.31 MPa and low = -0.91 MPa), and castor variety (Krishna and Rincon). The combination resulted in a factorial 3 × 2 experimental design. The experiment was set up as a randomized block with four replications under a split-plot arrangement, where the whole plots were for soil moisture and the subplots were for the castor variety. The measured variables were plant height (PH), days to flowering of 50% of the plants (DF), leaf area (LA), dry weight (DW), source-sink relationship, harvest index (HI) and seed yield. Data were analyzed by ANOVA, mean tests (HSD at α = 0.05) and regression analysis. There were significant differences in PH, LA, DW, HI and yield among the treatments. The values of PH, LA and DW tended to be higher at higher soil moisture levels than at lower moisture levels. The source strength was generally lower than the sink strength in all the treatments. There were significant differences between the varieties for HI, and the interaction between soil moisture and variety was also significant. Significant differences were found in yield; the Krishna variety had a greater yield than the Rincon variety, but there was only a significant difference between the yield of the Krishna variety cultivated under low soil moisture (5200 kg ha-1) and that of the Rincon variety cultivated under high soil moisture (2570 kg ha-1). The results of this study indicate that castor plants can be cultivated in arid regions at suboptimal soil moisture levels with supplementary irrigation without compromising plant performance or yield.","PeriodicalId":50695,"journal":{"name":"Ciencia E Investigacion Agraria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43098582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1