Genetic Components of Yield Stability in Maize Breeding Populations

Crop Science ◽  
2003 ◽  
Vol 43 (6) ◽  
pp. 2018-2027 ◽  
Author(s):  
E. A. Lee ◽  
T. K. Doerksen ◽  
L. W. Kannenberg
Keyword(s):  
Yield Stability ◽  
Maize Breeding ◽  
Genetic Components ◽  
Breeding Populations

scholarly journals Genomic Prediction in Maize Breeding Populations with Genotyping-by-Sequencing

2013 ◽  
Vol 3 (11) ◽  
pp. 1903-1926 ◽  
Author(s):  
José Crossa ◽  
Yoseph Beyene ◽  
Semagn Kassa ◽  
Paulino Pérez ◽  
John M. Hickey ◽  
...  
Keyword(s):  
Genomic Prediction ◽  
Genotyping By Sequencing ◽  
Maize Breeding ◽  
Breeding Populations

Genetic Components of Grain Yield Stability in Maize Diallel Crosses

2016 ◽  
Vol 30 (2) ◽  
pp. 217-243
Author(s):  
Lilian Gichuru ◽  
John Derera ◽  
Pangirayi Tongoona ◽  
Kiarie Njoroge ◽  
Mwimali Murenga
Keyword(s):  
Grain Yield ◽  
Yield Stability ◽  
Diallel Crosses ◽  
Genetic Components

scholarly journals Variation in degree of pollen exclusion for ga1‐s unilateral cross incompatibility in temperate maize breeding populations

age ◽  
2021 ◽  
Vol 4 (4) ◽  
Author(s):  
Nicholas A. Boerman ◽  
Adrienne N. Moran Lauter ◽  
Jode W. Edwards ◽  
M. Paul Scott
Keyword(s):  
Maize Breeding ◽  
Breeding Populations

scholarly journals Combined S1-TC-RRS with consideration of cms and dihaploids in maize

Genetika ◽  
2012 ◽  
Vol 44 (1) ◽  
pp. 69-79
Author(s):  
Jelena Vancetovic ◽  
Dragana Ignjatovic-Micic ◽  
Sofija Bozinovic ◽  
Nenad Delic ◽  
Zoran Camdzija
Keyword(s):  
Seed Production ◽  
Inbred Lines ◽  
Maize Breeding ◽  
Selection Cycle ◽  
Breeding Populations ◽  
Per Se ◽  
Variety Protection ◽  
Short Time ◽  
Selection Of

Herein, we present the combined S1-HS-RRS method using inbred testers (S1-TC-RRS) as a long-term maize breeding program, which increases the frequency of favorable alleles and maintains genetic variability in two genetically opposite populations. The method improves two different genetic sources simultaneously, where S1 families, developed by selfing phenotypically superior plants from both breeding populations are crossed with opposite inbred testers for specific combining ability selection, accompanied by selection of S1 families per se. A certain percentage of the evaluated S1 families is used for the next TC-RRS selection cycle. Maternal haploids from the selected S1 lines of each cycle of S1-TC-RRS can serve to produce elite 100% homozygous inbred lines (dihaploids) in a short time, which decreases the time and expenses of the selection cycle and influence the efficiency of seed production, as well as, variety protection rights. This elite lines than can be converted to CMS versions (paternal haploids), for the seed production, which lowers the costs of it.

Effect of Recurrent Selection on Combining Ability in Maize Breeding Populations

Crop Science ◽  
2003 ◽  
Vol 43 (5) ◽  
pp. 1652-1658 ◽  
Author(s):  
T. K. Doerksen ◽  
L. W. Kannenberg ◽  
E. A. Lee
Keyword(s):  
Combining Ability ◽  
Recurrent Selection ◽  
Maize Breeding ◽  
Breeding Populations

scholarly journals Genotype by environment interaction and yield stability analysis of quality protein maize genotypes in Terai Region of Nepal

2013 ◽  
Vol 1 (2) ◽  
pp. 74-78 ◽  
Author(s):  
Jiban Shrestha
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Genotype By Environment Interaction ◽  
Yield Stability ◽  
Coefficient Of Determination ◽  
Quality Protein Maize ◽  
Environment Interaction ◽  
Maize Breeding ◽  
Maize Genotypes ◽  
Joint Regression Analysis

Grain yield stability for the new maize genotypes is an important target in maize breeding programs. The main objective of this study was to identify stable high yielding quality protein maize (QPM) genotypes under various locations and years in terai region of Nepal. Six quality protein maize genotypes along with Poshilo Makai-1 (Standard Check) and Farmer’s Variety (Local Check) were tested at three different locations namely Ayodhyapuri-2, Devendrapur, Madi, Chitwan; Rajahar-8, Bartandi, Rajahar,  Nawalparasi; Mangalpur-2, Rampur,  Chitwan during  2011 and 2012 spring and winter seasons under rainfed condition.  The experiment was conducted using Randomized Complete Block Design with two replications in farmer’s fields. There was considerable variation among genotypes and environments for grain yield. The analysis of variance showed that mean squares of environments (E) was highly significant and genotypes (G) and genotype x environment interaction (GEI) were non significant. The genotypes S03TLYQ-AB02 and RampurS03FQ02 respectively produced the higher mean grain yield 5422±564 kg/ha and 5274±603 kg/ha across the locations. Joint regression analysis showed that RampurS03FQ02 and S03TLYQ-AB02 with regression coefficient 1.10 and 1.22 respectively are the most stable genotypes over the tested environments. The coefficient of determination (R2) for genotypes Rampur S03FQ02 and S03TLYQ-AB02 were as high as 0.954, confirming their high predictability to stability. Further confirmation from GGE biplot analysis showed that maize genotype S03TLYQ-AB02 followed by Rampur S03FQ02 were more stable and adaptive genotypes across the tested environments. Thus these genotypes could be recommended to farmers for general cultivation.DOI: http://dx.doi.org/10.3126/ijasbt.v1i2.8202 Int J Appl Sci Biotechnol, Vol. 1(2): 75-79

scholarly journals Marker-assisted selection for the gene of β-carotene hydroxylase in maize

2020 ◽  
Vol 27 ◽  
pp. 83-88
Author(s):  
O. V. Zatyshniak ◽  
V. Yu. Cherchel ◽  
B. V. Dziubetskyi ◽  
Jumei Zhang ◽  
Hui Jin ◽  
...  
Keyword(s):  
Marker Assisted Selection ◽  
Molecular Genetic ◽  
Field Method ◽  
Maize Breeding ◽  
Hydroxylase Gene ◽  
Breeding Populations ◽  
Two Generations ◽  
Allelic Status ◽  
Parental Inbred ◽  
Β Carotene

Aim. Estimation of the allelic status of  marker crtRB1-3'TE of  the β-carotene hydroxylase gene and marker-assisted selection by this marker in Ukrainian  maize breeding material. Methods. Field method and polymerase chain reaction. Results. The analysis of the allelic state of β-carotene hydroxylase gene for marker crtRB1-3'TE in maize breeding populations (DK23×F2)F2 and (DK23×F2)F3MAS having been obtained after the first and second self-pollinations of single cross DK23×F2 was provided. It was established that the parental inbred lines DK23 and F2 contained respectively 296 bp (unfavorable) and 543 bp (favorable) alleles of  marker crtRB1-3'TE. The three kinds of genotypes appeared to present at different frequencies in (DK23×F2)F2 – homozygous  for allele 296 bp, homozygous for allele 543 bp and heterozygous with both alleles 296 bp and 543 bp. For further cultivation and self-pollination, only plants with allele 543 bp within (DK23×F2)F2 were selected. All tested plants in population (DK23×F2)F3MAS were homozygous for allele 543 bp. Conclusions. Marker-associated selection in two generations for the β-carotene hydroxylase gene, involved in β-carotene accumulation, allowed to select homozygous plants of maize by favorable crtRB1-3'TE allele. Keywords: Zea mays L., molecular genetic markers, carotenoids, breeding populations, allele.

scholarly journals Releases of Asian houbara must respect genetic and geographic origin to preserve inherited migration behaviour: evidence from a translocation experiment

2020 ◽  
Vol 7 (3) ◽  
pp. 200250
Author(s):  
Robert J. Burnside ◽  
Claire Buchan ◽  
Daniel Salliss ◽  
Nigel J. Collar ◽  
Paul M. Dolman
Keyword(s):  
Satellite Telemetry ◽  
Geographic Origin ◽  
Release Site ◽  
Geographic Scale ◽  
Migration Patterns ◽  
Eastern Population ◽  
Genetic Components ◽  
Breeding Populations ◽  
Central Population ◽  
Migratory Strategies

Maintaining appropriate migratory strategies is important in conservation; however, translocations of migratory animals may alter locally evolved migration behaviours of recipient populations if these are different and heritable. We used satellite telemetry and experimental translocation to quantify differences and assess heritability in migration behaviours between three migratory Asian houbara ( Chlamydotis macqueenii ) breeding populations (640 km range across eastern, central and western Uzbekistan). Adults from the eastern population migrated twice as far (mean = 1184 km ± 44 s.e.) as the western population (656 km ± 183 s.e.) and showed significantly less variation in migration distance than the central population (1030 km ± 127 s.e.). The western and central populations wintered significantly further north (mean: +8.32° N ± 1.70 s.e. and +4.19° N ± 1.16 s.e., respectively) and the central population further west (−3.47° E ± 1.46 s.e.) than individuals from the eastern population. These differences could arise from a differing innate drive, or through learnt facultative responses to topography, filtered by survival. Translocated birds from the eastern population (wild-laid and captive-reared, n = 5) migrated further than adults from either western or central recipient populations, particularly in their second migration year. Translocated birds continued migrating south past suitable wintering grounds used by the recipient populations despite having to negotiate mountain obstacles. Together, this suggests a considerable conserved heritable migratory component with local adaptation at a fine geographic scale. Surviving translocated individuals returned to their release site, suggesting that continued translocations would lead to introgression of the heritable component and risk altering recipient migration patterns. Conservation biologists considering translocation interventions for migratory populations should evaluate potential genetic components of migratory behaviour.

Sign in / Sign up

Export Citation Format

Share Document