CP-Tania 5, white maize variety horse’s tooth (Claviceps gigantea) resistant for Mexican highlands

2021 ◽  
Vol 39 (3) ◽  
Author(s):  
Carlos De León-García de Alba ◽  
Alma Rosa Solano-Báez ◽  
Guillermo Márquez-Licona ◽  
Jesús Ricardo Sánchez-Pale
Keyword(s):  
Maize Variety

En el Colegio de Postgraduados se desarrolló la variedad sintética de maíz de grano blanco con buenas características agronómicas y resistencia al diente de caballo para zonas de transición y altiplano de México. <em>C. gigantea</em> ha sido reportado solo en México, sin embargo, se ha distribuido en zonas productoras de maíz en el altiplano y zonas de transición con clima fresco y alta humedad. La variedad se generó recombinando 10 líneas S1 generadas a partir de una población base de maíz con endospermo blanco y amplia base genética. La población se mejoró siguiendo un programa de selección recurrente en líneas S1. Las líneas obtenidas se seleccionaron después de inocular con macroconidios del hongo y las mejores se recombinaron para generar variedades sintéticas, entre las cuales la variedad CP-Tania 5 fue sobresaliente. Esta variedad sintética ofrece rendimiento de grano que compite con el de híbridos comerciales, la semilla es de menor costo, puede sembrarse por varios ciclos en condiciones limitantes y puede distribuirse entre agricultores.

Yield performance with heritability measurements of half sib families obtained from maize variety Azam

1970 ◽  
pp. 33-36
Author(s):  
Faizan Mahmood, Hidayat- Ur-Rahman, Nazir Ahmad ◽  
Fahim-ul- Haq ◽  
Samrin Gul, Quaid Hussain ◽  
Ammara Khalid ◽  
Touheed Iqbal ◽  
...  
Keyword(s):  
Grain Yield ◽  
Agronomic Traits ◽  
Heritability Estimate ◽  
Kernel Weight ◽  
Yield Performance ◽  
Grain Moisture ◽  
Maize Variety ◽  
Ear Height ◽  
Sib Families

This study evaluated the performance of 64 half sib families (HSF) derived from “Azam” variety of maize using partially balanced lattice square design with two replications. Data were recorded on grain yield and other agronomic traits. Observations showed difference in half-sib families for studied traits. Among the 64 half-sib families, minimum days to 50% tasseling (51 days) were observed for HS-49 while maximum (57 days) for HS-63. Minimum days to 50% silking (56 days) were counted for HS-6 while maximum (63 days) for HS-23. Minimum days to 50% anthesis (55 days) were counted for HS-1 and HS-6 while maximum (62 days) for HS-23. Similarly, minimum ASI (-2 days) were observed in HS-1, HS-15, HS-16, HS-28 and HS-63 while maximum (2 days) in HS-48. Minimum (60 cm) ear height was recorded for HS-11 and maximum (93.5 cm) for HS-28. Minimum fresh ear weight (1.3 kg) was weighted for HS-17 while maximum (3.2 kg) for HS-21. Grain moisture was recorded minimum (19.35 %) for HS-19 and maximum (31.25%) for HS-2. HS-42 showed minimum (28 g) 100 kernel weight while HS-5 showed maximum (47 g). Grain yield was minimum (2323 kg ha-1) for HS-17 and maximum (5742 kg ha-1) for HS-21. Maximum heritability estimate (0.92) was recorded for fresh ear weight, while minimum (0.41) was observed for ear height.

scholarly journals Antagonism of chloride and nitrate inhibits nitrate reductase activity in chloride-stressed maize

2021 ◽  
Author(s):  
Xudong Zhang ◽  
Bastian L. Franzisky ◽  
Lars Eigner ◽  
Christoph‐Martin Geilfus ◽  
Christian Zörb
Keyword(s):  
Zea Mays ◽  
Polyethylene Glycol ◽  
Nitrate Reductase ◽  
Osmotic Stress ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Shoot Biomass ◽  
Lower Intensity ◽  
Maize Variety ◽  
Osmotic Balance

AbstractChloride (Cl−) is required for photosynthesis and regulates osmotic balance. However, excess Cl− application negatively interacts with nitrate ($${\mathrm{NO}}_{3}^{-}$$ NO 3 - ) uptake, although its effect on $${\mathrm{NO}}_{3}^{-}$$ NO 3 - metabolism remains unclear. The aim was to test whether Cl− stress disturbs nitrate reductase activity (NRA). A maize variety (Zea mays L. cv. LG 30215) was hydroponically cultured in a greenhouse under the following conditions: control (2 mM CaCl2), moderate Cl− (10 mM CaCl2), high Cl− (60 mM CaCl2). To substantiate the effect of Cl− stress further, an osmotic stress with lower intensity was induced by 60 g polyethylene glycol (PEG) 6000 L−1 + 2 mM CaCl2), which was 57% of the osmotic pressure being produced by 60 mM CaCl2. Results show that high Cl− and PEG-induced osmotic stress significantly reduced shoot biomass, stomatal conductance and transpiration rate, but NRA was only decreased by high Cl− stress. The interference of NRA in chloride-stressed maize is supposed to be primarily caused by the antagonistic uptake of Cl− and $${\mathrm{NO}}_{3}^{-}$$ NO 3 - .

Nitrogen Application for Short-Term Forages in Saudi Arabia. II. Summer Annuals: Maize, Proso Millet and Foxtail Millet

1981 ◽  
Vol 17 (3) ◽  
pp. 281-289
Author(s):  
P. W. Bartholomew ◽  
R. J. Williams
Keyword(s):  
Saudi Arabia ◽  
Nitrogen Fertilizer ◽  
Foxtail Millet ◽  
Forage Yield ◽  
Setaria Italica ◽  
Nitrogen Application ◽  
Panicum Miliaceum ◽  
Short Term ◽  
Proso Millet ◽  
Maize Variety

SUMMARYNitrogen fertilizer requirements and potential forage yield of maize and two millet types grown under irrigation in Saudi Arabia were assessed. Nitrogen application at 50 kg/ha produced mean yields of up to 15.7 t/ha in maize variety Pioneer H.3147. Splitting the nitrogen application did not significantly affect yield. Nitrogen above 100 kg/ha did not significantly increase DM yield of Proso millet (Panicum miliaceum). Mean total DM yields of 17.6 t/ha of Setaria italica were produced, after 111 days, with 150–200 kg/ha of nitrogen; 150 kg/ha of P2O5 produced a mean DM yield 7.9% higher than 75 kg P2O5/ha.

scholarly journals Allocative efficiency and adoption of improved maize variety: A case of eastern hills of Nepal

2020 ◽  
Vol 3 (1) ◽  
pp. 148-159
Author(s):  
Tilak Katel ◽  
Bhishma Raj Dahal ◽  
Sandesh Bhatta
Keyword(s):  
Regression Model ◽  
Insect Pest ◽  
Allocative Efficiency ◽  
Climatic Conditions ◽  
Probit Regression ◽  
Maize Production ◽  
Factors Affecting ◽  
Face To Face ◽  
Maize Variety ◽  
Structured Questionnaire

Production and  profit from maize farming can be substantially increased by allocating resources efficiently and adopting improved maize variety. In this context, a study was undertaken to determine the allocative efficiency and factors affecting adoption of improved maize variety in Eastern hills of Nepal. Random sampling was conducted in eastern part of Khotang district namely, Halesi municipality and Diktel Rupakot Majuwagadi municipality during month of March 2019. Pretested semi-structured questionnaire was administered among 80 randomly selected farmers cultivating maize since last two years. Face to face interview was scheduled to obtain data. Cobb Douglas production function was used to determine allocative efficiency; probit regression model was launched to determine factors affecting adoption of improved maize variety.  Significant positive relation of cost of seed, planting, and weeding with income has suggested to increase expenditure on certified maize seed over own farm seed, line sowing over broadcasting, and weeding. The model revealed that increasing all the factors of production by 100% would result in increase in income by 71.83%. Furthermore, cultivating improved maize variety is more profitable than own farm seed. Probit regression model showed that, farmers who have received training, who were member of cooperatives and who have received high schooling were more likely to adopt open-pollinated improved maize variety. Unavailability of inputs (seed, fertilizer, and labor), insect pest attack and adverse climatic conditions were major constraint of maize farming. Therefore, it would be better to suggest maize producers to increase expenditure on seed; make maize field weed free and adopt line sowing method. In addition, providing training, increasing access over inputs and encouraging farmers towards cooperatives could be virtuous for sustainable maize production.

scholarly journals Incidence and severity of maize streak disease: The influence of tillage, fertilizer application and maize variety

2018 ◽  
Vol 13 (12) ◽  
pp. 551-560
Author(s):  
Blankson D. ◽  
Asare-Bediako E. ◽  
A. Frimpong K. ◽  
Ampofo E. ◽  
J. Taah K. ◽  
...  
Keyword(s):  
Fertilizer Application ◽  
Maize Variety ◽  
Maize Streak Disease

scholarly journals PRODUKTIVITAS LAHAN DAN NKL PADA TUMPANGSARI TIGA VARIETAS JAGUNG PULUT (Zea mays caratina Kulesh) DENGAN BERBAGAI INTERVAL WAKTU TANAM KACANG TANAH (Archis hipogaea L.) SEBAGAI TANAMAN SELA

AGRICA ◽  
2020 ◽  
Vol 10 (2) ◽  
Author(s):  
Kristono Yohanes Fowo
Keyword(s):  
Zea Mays ◽  
Experimental Design ◽  
Dry Weight ◽  
Land Productivity ◽  
Local Varieties ◽  
Dry Land ◽  
Maize Varieties ◽  
Maize Variety ◽  
Two Factors ◽  
Cultivation Technology

Land Productivity and NKL on Tumpangsari Three Maize Variety Cultivation (Zea mays caratina Kulesh) With Various Interval Time Plants (Archis hipogaea L.) as Select Plant. This study aims to determine the combination of timing planting and planting techniques that can improve the productivity of land and NKL values ??on the application of intercropping cultivation technology in dry land conditions in Ende-NTT. The experimental design using Division Split Plot (RPT) consists of two factors repeated three times. The treatment of corn varieties (V1: Local varieties, V2: Uri varieties, V3: Binthe Pulu varieties) while planting time was placed as subplot (T1: Maize planted 15 days after peanut planting T2: Corn is grown together with peanut planting T3: Corn is grown 15 days before planting peanuts, as comparison of each treatment is also planted in monculture, so that obtained 31 units of experiment plot The data collection is done by calculating dry weight of seeds produced by all plant crops in the harvest plots, and the crops in the harvest plots. The results show that intercropping crops between pulut and peanut crops in various pulses maize varieties and peanut planting times increased the productivity of the land 1, with the highest land productivity dida The maize varieties of Uri corn is grown simultaneously with groundnut planting (V2T2) of 1.52 and followed by treatment of local varieties of pulutans planted together with peanut plant (V1T2) of 1.46.

scholarly journals Genetic variability and morphological modifications in flooding tolerance in maize, variety BRS-4154

2007 ◽  
Vol 7 (3) ◽  
pp. 314-320 ◽  
Author(s):  
J.L. Ferreira ◽  
C.H.M. Coelho ◽  
P.C. Magalhães ◽  
E.E.G. Gama ◽  
A. Borém
Keyword(s):  
Genetic Variability ◽  
Flooding Tolerance ◽  
Maize Variety

scholarly journals CP-Elvia 3, new white maize variety resistant to tar spot complex for Mexican subtropical areas

2020 ◽  
Vol 38 (3) ◽  
Author(s):  
Carlos De León-García de Alba
Keyword(s):  
Tar Spot ◽  
Maize Variety

En la producción de maíz, el agricultor se encuentra ante la alternativa de sembrar semilla comercial de maíz híbrido o de polinización libre, incluyendo variedades mejoradas o nativas. La semilla de maíz híbrido es costosa y es necesario comprarla en cada nuevo ciclo de siembra, mientras que una variedad mejorada de polinización libre ofrece varias ventajas ya que puede sembrarse por varios años, puede competir en rendimiento con los híbridos, es de menor costo y se difunde entre agricultores. Una variedad sintética ofrece ventajas adicionales sobre otras variedades incluyendo uniformidad en floración y fenotipo, mejor rendimiento de grano y resistencia a enfermedades. En éste trabajo se muestra la obtención de la variedad sintética de maíz de grano blanco CP-Elvia 3, con buen comportamiento agronómico y resistente al complejo de mancha de asfalto y que se obtuvo mediante un programa de selección recurrente de familias S1.

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