scholarly journals Effect of combination of NPK and nano silica on the levels of β-carotene and nutritional value of corn (Zea mays L.)

Author(s):  
E Prihastanti ◽  
A Subagyo ◽  
N Ngadiwiyana
2020 ◽  
Vol 43 (9) ◽  
pp. 1205-1216 ◽  
Author(s):  
Pegah Aqaei ◽  
Weria Weisany ◽  
Marjan Diyanat ◽  
Javad Razmi ◽  
Paul C. Struik

Genome ◽  
1987 ◽  
Vol 29 (5) ◽  
pp. 782-785 ◽  
Author(s):  
Kevin D. Simcox ◽  
Jeffery D. Shadley ◽  
David F. Weber

The r-X1 deficiency in maize produces high frequencies of aneuploid progeny by inducing nondisjunction during embryo sac development. The purpose of this investigation was to determine the embryo sac division at which the nondisjunctive event takes place. Monosomic-6 individuals were generated by crossing r-X1 containing plants by those carrying the y-pastel-8549 allele of the Y locus on chromosome 6. A strict dosage relationship exists between the number of dominant alleles of the Y locus and the level of β-carotene in the endosperm. We found that the level of β-carotene in the endosperm of kernels containing monosomic-6 embryos was comparable with that found in endosperms with one Y allele. This indicated that they contained only one maternally contributed chromosome 6. Only nondisjunction at the second postmeiotic division could have produced such an endosperm; thus, the nondisjunctive event occurs at this division. Another endosperm type expected from nondisjunction at this same division, with three dominant Y alleles, was not found. The absence of this endosperm type suggests that the egg nucleus and the polar nucleus originating at the micropylar pole are sister nuclei that arose from the same cell at the third embryo sac mitotic division. Key words: aneuploidy, embryo sac, nondisjunction, r-X1 deficiency, Zea.


2018 ◽  
Vol 31 (4) ◽  
pp. 68
Author(s):  
G. M. Sandesh ◽  
C. Saran Kumar ◽  
P. Bharathi ◽  
M. Dhasarathan ◽  
A. Karthikeyan ◽  
...  
Keyword(s):  
Zea Mays ◽  

2020 ◽  
Vol 53 (3) ◽  
Author(s):  
Asif Iqbal ◽  
Muhammad Aamir Iqbal ◽  
Mohamed F. Awad ◽  
Muhammad Nasir ◽  
Ayman El Sabagh ◽  
...  

2021 ◽  
Vol 2 (4) ◽  
pp. 6133-6141
Author(s):  
Ceja León Edna Sofía ◽  
Sánchez Saavedra Ma. Guadalupe ◽  
Cárdenas Pérez Ricardo ◽  
Loeza Lara Pedro Damian ◽  
Núñez Oregel Verónica

La tortilla de maíz (Zea mays L.), es la base de la alimentación mexicana, por su alto valor nutricional, no obstante, dado el nivel calórico que presenta se buscan alternativas que disminuyan este contenido. Una opción es adicionarle nopal, lo que disminuye el nivel calórico y proporciona beneficios importantes tales como, buena fuente de fibra dietética, actividad antioxidante, efecto prebiótico y con ello, es una alternativa para prevención de enfermedades crónicas degenerativas. Sin embargo, dada la alta actividad acuosa del nopal disminuye considerablemente la vida de anaquel de la tortilla, ocasionando deterioro significativo en pocos días. Para revertir tal efecto existen conservadores químicos como: el benzoato de sodio y ácido cítrico y conservadores biológicos como: las gomas arábigas, guar, xantana y el quitosano, que favorecen la baja actividad acuosa y permiten estabilizar de manera importante un alimento. Aunado al interés de la población de una disminución del consumo calórico también existe la preocupación de consumir alimentos libres de patógenos y la menor cantidad de aditivos posibles.  Por lo anterior, en este trabajo se analizan diferentes conservadores químicos y biológicos con la finalidad de alargar la vida de anaquel de la tortilla de nopal con la mínima dosis posible. Para ello, a 1 kg de masa se agregó el agente conservante en diferentes concentraciones, se homogeneizó y posteriormente se elaboraron las tortillas a partir de 30 g de la masa, se dejó alcanzar la temperatura ambiente, empacaron y almacenaron a 25 °C y 4 °C, se registró diariamente el estado de la tortilla hasta observar cambios desfavorables. Se obtuvieron resultados con una duración de 5 días a temperatura ambiente con aditivos diferentes y de 25 y 37 días a temperatura de 4°C.   Corn tortilla (Zea mays L.) is the basis of Mexican food, due to its high nutritional value; however, given its high caloric content, alternatives are being sought to reduce this content. One option is to add nopal, which reduces the caloric level and provides important benefits such as a good source of dietary fiber, antioxidant activity, prebiotic effect and thus is an alternative for the prevention of chronic degenerative diseases. However, due to the high aqueous activity of nopal, the tortilla's shelf life decreases considerably, causing significant deterioration in a few days. To reverse this effect, there are chemical preservatives such as sodium benzoate and citric acid and biological preservatives such as gums arabic, guar, xanthan and chitosan, which favor the low water activity and can significantly stabilize a food. In addition to the population's interest in reducing caloric intake, there is also the concern of consuming food free of pathogens and the least amount of additives possible.  Therefore, in this work, different chemical and biological preservatives are analyzed in order to extend the shelf life of nopal tortillas with the minimum possible dose. For this purpose, the preservative agent was added to 1 kg of dough in different concentrations, homogenized and then the tortillas were made from 30 g of dough, allowed to reach room temperature, packed and stored at 25 °C and 4 °C, and the tortilla condition was recorded daily until unfavorable changes were observed. Results were obtained with a shelf life of 5 days at room temperature with different additives and 25 and 37 days at 4°C.


Author(s):  
Yu.O. Honcharov ◽  
Yu.V. Shytikova ◽  
S.I. Melnyk ◽  
I.O. Sihalova

2011 ◽  
Vol 123 (2) ◽  
pp. 153-160 ◽  
Author(s):  
Kevin V. Pixley ◽  
Natalia Palacios-Rojas ◽  
Raymond P. Glahn

Agronomie ◽  
1982 ◽  
Vol 2 (2) ◽  
pp. 159-166 ◽  
Author(s):  
Olivier BETHENOD ◽  
Christine JACOB ◽  
Jean-Claude RODE ◽  
Jean-François MOROT-GAUDRY
Keyword(s):  
Zea Mays ◽  

1970 ◽  
Vol 3 (2) ◽  
pp. 318-326
Author(s):  
Yoyon Riono.
Keyword(s):  
Zea Mays ◽  

Penelitian tentang pengaruh pemberian produktivitas pupuk organik terhadap hasil Tanaman Jagung (Zea mays L) di tanah mineral penelitian ini di laksanakan pada bulan Februari sampai Mei, yang bertempat di Sungai Salak Kecsmstsn Tempuling Kabupaten Indragiri Hilir Provinsi Riau. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) yang disusun secara faktorial yang terdiri dari 2 faktor dan 3 ulangan. Faktor B adalah bokashi pupuk kandang yang terdiri dari 4 taraf yaitu B0 (tanpa pemberianpupuk kandang), B1 (5 ton/ha) dan B2 (10 tom/ ha), serta B3 (15 ton/ha) Parameter yang di amati adalah tinggi tanaman, panjang daun ke tujuh, berat brangkasan basah, berat berangkasan kering, berat tongkol pertanaman sampel, diameter tongkol , produksi per plot, dan berat 100 biji. Selanjutnya data yang di peroleh di olah secara statistik, apabila F hitung lebih besar dari F tabel di lanjutkan dengan uji lanjut Tukey HSD pada taraf 5%. Hasil penelitian menunjukan bahwa interaksi bokashi pupuk kandang dan varietas berpengaruh nyata terhadap berat tongkol dan produksi dan produksi per plot, akan tetapi tidak berpengaruh nyata terhadap tinggi tanaman, panjang daun ke tujuh, berat brangkasan basah, berat brangkasan kering , diameter tongkol dan berat 1000 biji. Untuk perlakuan bokashi pupuk kandang secara tunggal berpengaruh nyata terhadap terhadap diameter tongkol , akan tetapi tidak berpengaruh nyata terhadap tinggi tanaman, panjang daun ke tujuh, berat brangkasan basah, berat brangkasan kering, berat tongkol, produksi per plot, dan berat 1000 biji, perlakuan bokashi terbaik terdapat pada pemberian 15 ton/ha. Sedangkan perlakuan varietas secara tunggal berpengaruh nyata terhadap berat brangkasan basah, berat tongkol, dan produksi per plot seta berat 1000 biji, akan tetapi tidak berbeda nyata dengan tinggi tanaman, panjang daun ke tujuh, berat brangkasan kering, dan diameter tongkol. Varietass terbaik adalah NT 10


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