Open Access
ARTICLE
Pacheco-Aguirre J, E Ruiz-Sánchez, A Reyes-Ramírez, J Cristóbal-Alejo, J Tun-Suárez, L Borges-Gómez
Phyton-International Journal of Experimental Botany, Vol.85, pp. 1-6, 2016, DOI:10.32604/phyton.2016.85.001
Abstract Antagonistic bacteria used as biological control agent may loss effectiveness at the field due to environmental factors such as UV radiation, dryness and high temperature. An inexpensive alternative to protect antagonistic bacteria against such factors is the use of microencapsulating agents. In this work, the effect of microencapsulation of Bacillus subtilis with commercial gums on their antagonistic capacity against Meloidogyne incognita was evaluated. The efficiency of the microencapsulation was verified by the difference between the initial and final concentrations of protein release. The effectiveness as antagonist was evaluated against M. incognita in tomato under greenhouse conditions. The microcapsules based on… More >
Open Access
ARTICLE
Moreno Pérez P1,3, M Gamboa Angulo1, G Heredia2, B Canto Canché1, CM Rodríguez García1, IL Medina Baizabal1, L Peraza Echeverría1
Phyton-International Journal of Experimental Botany, Vol.85, pp. 7-14, 2016, DOI:10.32604/phyton.2016.85.007
Abstract Nowadays, it is highly necessary to find more and safer agrochemicals. In this sense, micromycetes are an important source of natural products which could be used to control plant diseases. Therefore with the aims to contribute in this searching of natural products with antimicrobial applications, a total of 49 fungal strains were isolated from the Yucatan Peninsula. These fungi were cultured in fermented rice, their respective organic extracts macerated in ethyl acetate (EAE) and methanol (ME) were obtained and tested against five fungal pathogens of agricultural importance. These included Alternaria chrysanthemi, Colletotrichum gloeosporioides, Mycosphaerella fijiensis, and the bacteria Erwinia carotovora… More >
Open Access
ARTICLE
Ron MM, T Loewy
Phyton-International Journal of Experimental Botany, Vol.85, pp. 15-20, 2016, DOI:10.32604/phyton.2016.85.015
Abstract In the southwest of Buenos Aires Province (Argentina), nitrogen (N) and phosphorus (P) deficiencies are important wheat yield limiting factors. There is an information gap regarding differences between single element and binary N-P sources. The objective of this paper was to develop a general model for N-P fertilization in the area that also quantified diammonium phosphate (DAP) effect and its interactions with N-urea, applied at sowing or tillering, as compared with triple superphosphate (TSP). Between 1984 and 1985, 13 experiments were carried out in farmer’s fields N. With the yield data for each experiment, a yield function was fitted which… More >
Open Access
ARTICLE
Valadez Sánchez YM1, E Olivares Sáenz1, RE Vázquez Alvarado1, JR Esparza-Rivera3, P Preciado-Rangel4, RD Valdez-Cepeda5, JL García-Hernandez2
Phyton-International Journal of Experimental Botany, Vol.85, pp. 21-26, 2016, DOI:10.32604/phyton.2016.85.021
Abstract The aim of this study was to evaluate the effect of three organic fertilization sources on the agronomic and biochemical qualities of four genotypes of Serrano pepper. The experiment was performed at the field in Gómez Palacio, Durango (México). The capsaicinoids (CAP´s) are compounds responsible of the pungency of the peppers, and they are valuable for health and food and cosmetic food. The organic treatments applied were: solarized bovine manure (60 Mg/ha), vermicompost (10 Mg/ha) and poultry manure (5 Mg/ ha). A non-fertilized treatment was used as control. The evaluated variables were: length, diameter and individual weight on fruits, and… More >
Open Access
ARTICLE
Li XL1,2, YC Wang3, CA Busso4, JS Xiang1, AM Zhang1, YW Qu1, Y Liu2
Phyton-International Journal of Experimental Botany, Vol.85, pp. 27-35, 2016, DOI:10.32604/phyton.2016.85.027
Abstract Long-term continuous cropping of cotton had led to substantial agricultural losses. However, continuous cotton cropping could maintain high crop yields for many years in some areas. The composition and structure of soil nematode communities were investigated to explore the effect of continuous cropping and soil depths on these communities. Soil samples were collected at two soil depths (0-20 cm and 20-40 cm) from cotton fields with a history of 5, 10, 15 or 20 years of continuous cotton cropping in the Karamay region. The results showed that 36 genera were found. Significant differences in the numbers of total nematodes and… More >
Open Access
ARTICLE
Molina-Anzures MF1, JL Chávez-Servia2, A Gil-Muñoz1, PA López1, E Hernández-Romero1, E Ortiz-Torres1
Phyton-International Journal of Experimental Botany, Vol.85, pp. 36-50, 2016, DOI:10.32604/phyton.2016.85.036
Abstract Mesoamerican agrosystem ‘milpa’ is the association of maize, beans (Phaseolus sp.) and squash (Cucurbits sp.) in the same space and time. It is characterized by the production of a large diversity of species in small areas, but currently its use tends to decrease because of technological introductions of monocultures. In this work, the yield and productive efficiency of the association maize, beans and squash, intercropped with fruit tree rows were evaluated in two locations from Puebla, Mexico, through 32 experimental treatments clustered in three agrosystems. They were: triple associations of maize-beans-squash intercropped with fruit trees, double associations maize-beans without fruit… More >
Open Access
ARTICLE
Espósito ME1,3, MdelC Blanco1, ME Sequeira2,4, JD Paoloni3, SN Fernández2, NM Amiotti1,4, SL Díaz1
Phyton-International Journal of Experimental Botany, Vol.85, pp. 51-62, 2016, DOI:10.32604/phyton.2016.85.051
Abstract The interrelation between hydrochemistry and hydrodinamics was analyzed in the basin of El Divisorio stream. This was to gain undestanding in the magnitude, distribution of toxic ions (As, F) and behaviour in the discharge of main nutrients (P, N) contributing to the eutrofication of Paso de las Piedras Dam. During two years, 47 sites were sampled determining several parameters: geographical position for each sampling point, phreatic level depth, and As, F, PO4 and N-NO3 concentrations. Repeated measures, Fisher test, correlation and regression analysis were applied to all variables. Highly significant space and time differences (P<0.01) with increments of 0.3 m… More >
Open Access
ARTICLE
Santana Legorreta S1, A Villanueva-Carvajal2, EJ Morales-Rosales2, A Laguna-Cerda2, A Dominguez-Lopez2
Phyton-International Journal of Experimental Botany, Vol.85, pp. 63-70, 2016, DOI:10.32604/phyton.2016.85.063
Abstract The Dahlia (Dahlia coccinea Cav.) is a plant that has been cultivated and genetically improved due to its ornamental importance; anyhow, its radical system accumulates reserve carbohydrates in the form of inulin and other fructans. Inulin is considered a part of the dietetic fiber from vegetable food sources, and it is also considered as a prebiotic compound. Inulin is extracted mainly from chicory and artichoke through different separation methods being Dahlia’s tubers an interesting option for industrial utilization. The aims of this study were to (1) propose a simple extraction method of inulin from Dahlia’s tubers, and (2) evaluate the… More >
Open Access
ARTICLE
González B ML1, M Fortis H1, P Preciado R1, MA Segura C1, E Salazar Sosa1, JL García H2, JR Esparza R3
Phyton-International Journal of Experimental Botany, Vol.85, pp. 71-78, 2016, DOI:10.32604/phyton.2016.85.071
Abstract The aim of the current study was to evaluate yield and phytochemical quality of tomato fruits produced using organic substrates under greenhouse conditions. The applied treatments (organic substrates) were: T1 (80% River sand + 20% Vermicompost; T2 (90% River sand + 10% Compost); T3 Steiner Solution (80% River sand + 20% Perlite); T4 (80% River sand + 5% Soil + 15% Vermicompost); T5 (85% River sand + 15% Treated manure), and T6 (80% River sand + 5% Soil + 15% Treated manure). We used a totally randomized experimental design, with four replicate treatments. Evaluated variables were: yield, relative content of… More >
Open Access
ARTICLE
Ma YQ, X Wang, SH Gao, J Zhang
Phyton-International Journal of Experimental Botany, Vol.85, pp. 79-86, 2016, DOI:10.32604/phyton.2016.85.079
Abstract The conditions for extracting polysaccharides from sweet corncobs (SCP) were studied. Four parameters (ratio of water to raw material, compound enzyme concentration, temperature of enzymolysis and duration of enzymolysis) affecting the extraction of SCP were optimized using response surface methodology (RSM). Under the optimized conditions, the yield of SCP was 17.58 %. SCP had inhibitory effects on α-amylase and α-glucosidase activities, and the IC50 was 20.91 mg/mL and 12.47 mg/mL. SCP may therefore have prevention and treatment effects on postprandial hyperglycemia in diabetes. The inhibitory effects of SCP were improved after fractionation, and were strongest in the fraction SCP80. The… More >
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