scholarly journals The prestigious maize inbred lines with erect top leaves: The priority performance of the efficient photosynthetic model in breeding

Genetika ◽  
2009 ◽  
Vol 41 (1) ◽  
pp. 41-58
Author(s):  
Cedomir Radenovic ◽  
Milomir Filipovic ◽  
Dragojlo Selakovic ◽  
Mile Secanski ◽  
Vojka Babic ◽  
...  
Keyword(s):  
Plant Density ◽  
Thylakoid Membranes ◽  
Inbred Lines ◽  
Delayed Fluorescence ◽  
Non Invasive ◽  
Maize Inbred Lines ◽  
Dry Down ◽  
Area Unit ◽  
Unit Plant

This study conforms the hypothesis that there are elite maize inbred lines with erect top leaves that have a property of an efficient photosynthetic model and that as such are successfully used in the processes of breeding in which the number of plants is increased per area unit (plant density). This proof was established by the application of non- invasive photosynthetic-fluorescence method suitable for the evaluation of the efficiency of the photosynthetic model. The obtained photosynthetic and fluorescence properties of observed prestigious maize inbred lines with the erect top leaves are based on the effects and the nature of changes in chlorophyll fluorescence occurring in their thylakoid membranes. Their principal parameters are temperature dependence of the chlorophyll delayed fluorescence intensity, the Arrhenius plot for the determination of the phase transition in thylakoid membranes and the estimated activation energies. The displayed results on the size of an angle between the direction of the propagation of the above-ear leaf and the direction of the stalk propagation, as well as, results on the dynamics of grain dry-down during the maturation period, additionally indicate that traits of observed maize inbred lines with erect top leaves are the prominent base for more exact, rational and faster proceeding of current processes of breeding.

scholarly journals Actual prestigious properties of maize inbred lines: A good initial basis for the efficient development of new and yielding maize hybrids

Genetika ◽  
2008 ◽  
Vol 40 (2) ◽  
pp. 121-133 ◽  
Author(s):  
Cedomir Radenovic ◽  
Milomir Filipovic ◽  
Milosav Babic ◽  
Goran Stankovic ◽  
Aleksandar Radojcic ◽  
...  
Keyword(s):  
Water Status ◽  
Inbred Lines ◽  
Delayed Fluorescence ◽  
Critical Temperatures ◽  
Maturation Period ◽  
Maize Hybrids ◽  
Functional Changes ◽  
Chemical Structures ◽  
Maize Inbred Lines ◽  
Dry Down

This study conforms our hypothesis that there are elite maize inbred lines, which can be considered actual and prestigious as they have not only a property of the water status and a greater grain dry down rate during the maturation period, but also a property of the efficient photosynthetic-fluorescence model that is successfully used in the contemporary processes of breeding, and thereby in the development of new and yielding maize hybrids. Presented results obtained on the dynamics of grain dry down during the maturation period and on photosynthetic-fluorescence parameters (temperature dependence of the chlorophyll delayed fluorescence intensity, the Arrhenius plot for the determination of critical temperatures, i.e. phase transition temperatures and the activation energy) show that properties of the observed inbreeds are based on effects and nature of conformational and functional changes occurring in their thylakoid membranes and other chemical structures of grain tissues. Summarized results of studies on actual and prestigious properties of maize inbreeds will contribute to more exact, rational and expeditious proceedings of contemporary processes of breeding.

Detecting the phase transition in thylakoid membranes of maize inbred lines by means of delayed fluorescence

2014 ◽  
Vol 81 ◽  
pp. 208-211 ◽  
Author(s):  
Č.N. Radenović ◽  
G.V. Maksimov ◽  
E.V. Tyutyaev ◽  
G.J. Stanković ◽  
Ž.V. Jovanović ◽  
...  
Keyword(s):  
Phase Transition ◽  
Thylakoid Membranes ◽  
Inbred Lines ◽  
Delayed Fluorescence ◽  
Maize Inbred Lines

scholarly journals Photosynthetic properties of erect leaf maize inbred lines as the efficient photo-model in breeding and seed production

Genetika ◽  
2003 ◽  
Vol 35 (2) ◽  
pp. 85-97 ◽  
Author(s):  
Cedomir Radenovic ◽  
Milosav Babic ◽  
Nenad Delic ◽  
Zdravko Hojka ◽  
Goran Stankovic ◽  
...  
Keyword(s):  
Chlorophyll Fluorescence ◽  
Seed Production ◽  
Plant Density ◽  
Thylakoid Membranes ◽  
Inbred Lines ◽  
Thermal Processes ◽  
Critical Temperatures ◽  
Maize Inbred Lines ◽  
Photosynthetic Properties ◽  
Erect Leaf

The initial idea of this study was a hypothesis that erect leaf maize inbred lines were characterized by properties of an efficient photo-model and that as such were very desirable in increasing the number of plants per area unit (plant density) in the process of contemporary selection and seed production. The application of a non-invasive bioluminescence-photosynthetic method, suitable for the efficiency estimation of the photo-model, verified the hypothesis. Obtained photosynthetic properties of observed erect leaf maize inbred lines were based on the effects and characteristics of thermal processes of delayed chlorophyll fluorescence occurring in their thylakoid membranes. The temperature dependence of the delayed chlorophyll fluorescence intensity phase transitions (critical temperatures) in the thylakoid membranes and activation energy are the principal parameters of the thermal processes. Based on obtained photosynthetic properties it is possible to select erect leaf maize inbred lines that are resistant and tolerant to high and very high temperatures, as well as, to drought. They could be good and efficient photo-models wherewith.

scholarly journals Photosynthetic properties of elite erect leaf maize inbred lines and their contribution to seed production improvement

2004 ◽  
pp. 45-56 ◽  
Author(s):  
Cedomir Radenovic ◽  
Zdravko Hojka ◽  
Dragojlo Selakovic ◽  
Miroljub Misovic ◽  
Milovan Pavlov ◽  
...  
Keyword(s):  
Chlorophyll Fluorescence ◽  
Seed Production ◽  
Plant Density ◽  
Inbred Lines ◽  
Thermal Processes ◽  
Critical Temperatures ◽  
Maize Inbred Lines ◽  
Production Improvement ◽  
Photosynthetic Properties ◽  
Erect Leaf

A hypothesis that elite erect leaf maize inbred lines are characterized by properties of an efficient photo-model and that as such are very desirable in increasing the number of plants per unit area (plant density) in the process of seed production has been confirmed in the present study. The properties of the observed elite erect leaf maize inbred lines were based on the effects and characteristics of thermal processes of delayed chlorophyll fluorescence occurring in their thylakoid membranes. The temperature dependence of the delayed chlorophyll fluorescence intensity, the Arrhenius plot for the determination of phase transitions (critical temperatures) and activation energy are the principal parameters of the thermal processes. Based on the obtained results on photosynthetic properties it was also possible to estimate the tolerance and adaptation of elite erect leaf maize inbred lines to high temperatures and drought.

Determination of the Number of SSR Alleles Necessary for the Analysis of Genetic Relationships Between Maize Inbred Lines

2010 ◽  
Vol 9 (12) ◽  
pp. 1713-1725 ◽  
Author(s):  
Cheng-lai WU ◽  
Sheng-fu LI ◽  
Bing-xue DONG ◽  
Qian-qian ZHANG ◽  
Chun-qing ZHANG
Keyword(s):  
Genetic Relationships ◽  
Inbred Lines ◽  
Maize Inbred Lines

scholarly journals Significant biophysical and genetic properties of maize inbred lines and hybrids with erect top leaves

2010 ◽  
pp. 35-53
Author(s):  
Cedomir Radenovic ◽  
Milomir Filipovic ◽  
Mile Secanski ◽  
Milica Radosavljevic ◽  
Zoran Camdzija ◽  
...  
Keyword(s):  
Inbred Lines ◽  
Grain Structure ◽  
Maize Breeding ◽  
Critical Temperatures ◽  
Functional Changes ◽  
Positive Effects ◽  
Maize Inbred Lines ◽  
Breeding Programmes ◽  
Dry Down ◽  
Physical And Chemical

This study confirms the hypothesis that there are elite maize inbred lines and hybrids with erect top leaves, which have a dominant property of an efficient photosynthetic and fluorescent model that is successfully used in modern breeding programmes and the production hybrid seed and commercial maize. This statement is supported by the displayed results on the erect top leaves, the dynamics of grain dry-down during the maturation period and photosynthetic and florescence parameters: the temperature dependence of the delayed chlorophyll fluorescence intensity, the Arrhenius criterion for the determination of critical temperatures (phase transition temperatures) and the activation energies. The presented results show that properties of observed maize inbreds and their hybrids are based on the nature of conformational and functional changes that occur in their thylakoid membranes and other chemical tissues structures of grain and intact leaves, as well as, on positive effects in maize breeding. Moreover, other relevant significant breeding and seed production properties (commercial maize quality over grain structure, physical and chemical parameters) of maize inbred lines and their hybrids were analyzed in the present study.

scholarly journals The determination of Exserohilum turcicum virulence factors in Serbia

Genetika ◽  
2008 ◽  
Vol 40 (3) ◽  
pp. 271-281 ◽  
Author(s):  
Jelena Levic ◽  
Slavica Stankovic ◽  
Tijana Petrovic
Keyword(s):  
Virulence Factors ◽  
Standard Procedure ◽  
Inbred Lines ◽  
Exserohilum Turcicum ◽  
Leaf Sample ◽  
Maize Inbred Lines ◽  
First Results ◽  
Race 1 ◽  
Corn Leaf Blight

The determination of Exserohilum turcicum virulence factors and resistance responses of three sets of maize inbred lines (four differential, eight isogenic and 22 commercial inbreeds) to three isolates of this pathogen under greenhouse conditions were studied. The maize inbreeds were selected according to previous testing of resistance based on lesion types in 194 inbreeds under field conditions of plant inoculation with the E. turcicum race 0 (designated as the isolate MRI-Et). The standard procedure was applied to obtained isolates MRIZP-1747 and MRIZP-1416 from resistant and susceptible lesion types, respectively. These lesions were developed on the same leaf of a plant of the experimental hybrid no. 163/99 grown in a nursery at Zemun Polje during 1999. The third isolate (MRIZP-1435) was isolated from a leaf sample originating from the location of Srbobran in which the occurrence of northern corn leaf blight (NCLB), caused by Exserohilum turcicum, was intensive. Based upon virulence/avirulence of three isolates of E. turcicum on differential maize inbred lines, it was found out that the isolate MRIZP-1747 could be classified as race 0, whereas isolates MRIZP-1416 and MRIZP-1435 could be classified as race 1. These are the first results that confirm the presence of race 1 of E. turcicum in Serbia. Not including differential lines, 22 and six lines were resistant to race 0 and race 1, respectively, while eight and five lines were resistant and susceptible to both races, respectively. All isogenic lines not containing the Ht gene were susceptible to both races 0 and 1.

scholarly journals Cluster Analysis of Maize Inbred Lines

2016 ◽  
Vol 2 ◽  
pp. 33-36 ◽  
Author(s):  
Jiban Shrestha
Keyword(s):  
Morphological Traits ◽  
Winter Season ◽  
Inbred Lines ◽  
Hybrid Breeding ◽  
Average Linkage ◽  
Maize Inbred Lines ◽  
Linkage Method ◽  
Minimum Number ◽  
Number Of Leaves

The determination of diversity among inbred lines is important for heterosis breeding. Sixty maize inbred lines were evaluated for their eight agro morphological traits during winter season of 2011 to analyze their genetic diversity. Clustering was done by average linkage method. The inbred lines were grouped into six clusters. Inbred lines grouped into Clusters II had taller plants with maximum number of leaves. The cluster III was characterized with shorter plants with minimum number of leaves. The inbred lines categorized into cluster V had early flowering whereas the group into cluster VI had late flowering time. The inbred lines grouped into the cluster III were characterized by higher value of anthesis silking interval (ASI) and those of cluster VI had lower value of ASI. These results showed that the inbred lines having widely divergent clusters can be utilized in hybrid breeding programme.

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