Evaluation of Seed Germinability and Field Emergence Of Some Maize (Zea mays, L.) Hybrids Under Salinity Stress Conditions

2017 ◽  
Vol 8 (5) ◽  
pp. 649-656
Author(s):  
M . Zalama ◽  
A. Kishk
Keyword(s):  
Zea Mays ◽  
Salinity Stress ◽  
Zea Mays L ◽  
Stress Conditions ◽  
Seed Germinability ◽  
Field Emergence

scholarly journals Salt tolerance of corn genotypes (Zea mays L.) during germination and later growth

2007 ◽  
Vol 52 (2) ◽  
pp. 115-120 ◽  
Author(s):  
Velimir Radic ◽  
Damir Beatovic ◽  
Jelena Mrdja
Keyword(s):  
Zea Mays ◽  
Salt Tolerance ◽  
Seedling Growth ◽  
Zea Mays L ◽  
High Salinity ◽  
Stress Conditions ◽  
Corn Seed ◽  
Seed Germinability ◽  
Production Conditions

Since corn is grown in climatically diverse regions and under different production conditions, assuming that high salinity in the substrate affect corn seed performance, such conditions were simulated in this study in order to examine their effects on seedling geminability and length in several corn genotypes. The study showed that the tested seeds tolerated the stress conditions up to a certain point. The studied genotypes differed in level of resistance to the stress conditions. Salt concentrations were determined, which were capable of affecting negatively seed germinability and seedling growth.

scholarly journals Influence of drought on seedling development in different corn genotypes (Zea mays L.)

2007 ◽  
Vol 52 (2) ◽  
pp. 131-136
Author(s):  
Velimir Radic ◽  
Milka Vujakovic ◽  
Ana Marjanovic-Jeromela
Keyword(s):  
Zea Mays ◽  
Seedling Growth ◽  
Zea Mays L ◽  
Seedling Development ◽  
Stress Conditions ◽  
Corn Seed ◽  
Seed Germinability

Assuming that drought affects corn seed performance, such conditions were simulated in this study in order to examine their effects on seedling geminability and length in several corn genotypes. The study showed that the tested seeds tolerated the stress conditions up to a certain point. The studied genotypes differed in level of resistance to the stress conditions. Salt concentrations were determined, which were capable of negatively affecting seed germinability and seedling growth.

Comparison of teosinte (Zea mexicana L.) and inter-subspecific hybrids (Zea mays L.×Zea mexicana) for high forage yield under two sowing regimes

2015 ◽  
Vol 66 (1) ◽  
pp. 49 ◽  
Author(s):  
Imtiaz Akram Khan Niazi ◽  
Saeed Rauf ◽  
Jaime A. Teixeira da Silva ◽  
Hassan Munir
Keyword(s):  
Zea Mays ◽  
Heat Stress ◽  
Zea Mays L ◽  
Agronomic Traits ◽  
Plant Biomass ◽  
Stress Conditions ◽  
Forage Yield ◽  
Total Biomass ◽  
Percentage Survival ◽  
Biomass Plant

This study was undertaken to evaluate the response of teosinte (Zea mexicana L.) and intersubspecific hybrids to heat stress, in particular productivity. Unlike maize (Zea mays L.), teosinte demonstrated thermophilic properties, namely lower heat injury, sustained chlorophyll content under heat stress (36−45°C) and high percentage survival of seedlings (at 55°C). Teosinte also had the ability to produce large plant biomass (27% and 55% higher yield than maize under non-stressed and stress conditions, respectively) and therefore could be exploited as a forage crop. However, teosinte forage had low animal intake (1.48 kg day–1) because of high pubescence density (10.38 view–1) and low sweetness (9.90°Brix). There was a high percentage of heterosis in variable intersubspecific crosses and traits, and a high magnitude of over-dominance for many traits, for example 5.93–7.06 for total biomass plant–1. Hybrids showed additional advantages, including high oil (20% and 4%) and protein (14% and 25%) contents compared with teosinte under non-stressed and stress conditions, respectively. Moreover, inter-subspecific hybrids were also resistant to heat stress, with the capacity for sustaining growth for a longer period (20% and 33% higher than maize under non-stressed and stress conditions, respectively). Genetic distance between parents—calculated from stable agronomic traits—could be used to select parents for high heterosis under both heat stress and non-stressed conditions.

Combining Ability of Some Maize Inbreds and Their Hybrids ( Zea Mays L. ) Under Water Stress Conditions

2014 ◽  
Vol 18 (2) ◽  
pp. 347-371
Author(s):  
S. A. Okasha ◽  
M. A. Al-Ashry ◽  
A. Aly ◽  
T. Bayoumy ◽  
Manal Hefny
Keyword(s):  
Zea Mays ◽  
Water Stress ◽  
Combining Ability ◽  
Zea Mays L ◽  
Stress Conditions ◽  
Maize Inbreds
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