scholarly journals Estimate of Some Genetic Parameters by Factorial Analysis of Quantitative Traits in Maiz Zea mays L

2018 ◽  
Vol 13 (2) ◽  
pp. 295-306
Author(s):  
Yaser H. Homadia
Keyword(s):  
Zea Mays ◽  
Quantitative Traits ◽  
Genetic Parameters ◽  
Zea Mays L ◽  
Factorial Analysis

Genetic Analysis of Quantitative Traits in Synthetic Population 316P02 of Maize (Zea mays L.)

2001 ◽  
Vol 29 (1-2) ◽  
pp. 77-84
Author(s):  
Nenad Vasić ◽  
Djordje Jocković ◽  
Mile Ivanović ◽  
Luiz Peternelli ◽  
Milisav Stojaković ◽  
...  
Keyword(s):  
Zea Mays ◽  
Genetic Analysis ◽  
Quantitative Traits ◽  
Zea Mays L ◽  
Synthetic Population

scholarly journals Identification of Associations between SSR Markers and Quantitative Traits of Maize (Zea mays L.)

Agronomy ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 182
Author(s):  
Jan Bocianowski ◽  
Kamila Nowosad ◽  
Barbara Wróbel ◽  
Piotr Szulc
Keyword(s):  
Zea Mays ◽  
Ssr Markers ◽  
Marker Assisted Selection ◽  
Quantitative Traits ◽  
Zea Mays L ◽  
Fresh Weight ◽  
Multiple Traits ◽  
Good Tool ◽  
Maize Varieties ◽  
Hybrid Maize

Microsatellite or simple sequence repeat (SSR) markers have wide applicability for genetic analysis in crop plant improvement strategies. Marker-assisted selection is an important tool for plant breeders to increase the efficiency of a breeding process, especially for multigenic traits, highly influenced by the environment. In this paper, the relationships between SSR markers and 26 quantitative traits of hybrid maize varieties (Zea mays L.) were analyzed. Association analyses were performed based on 30 SSR primers in a set of thirteen hybrid maize varieties. A total of 112 SSR markers were detected in these genotypes. The number of alleles per locus ranged from 1 to 17, with the average number of alleles per locus equal to 3.7. The number of molecular markers associated with observed traits ranged from 1 (for the number of kernels in row, ears weight and fresh weight of one plant) to 14 (for damage of maize caused by P. nubilalis) in 2016 as well as from 1 (for soil plant analysis development—SPAD, the number of grains in ear and fresh weight of one plant) to 12 (for carotenoids content) in 2017. The sum of statistically significant associations between SSR markers and at least one trait was equal to one hundred sixty in 2016 as well as one hundred twenty-five in 2017. Marker trait associations (MTAs) were found on the basis of regression analysis. The proportion of the total phenotypic variances of individual traits explained by the marker ranged from 24.4% to 77.7% in the first year of study and from 24.3% to 77.9% in 2017. Twenty-two SSR markers performed a significant effect on at least one tested trait in both years of experiment. The three markers (phi021/4, phi036/3, and phi061/2) can be a good tool in marker-assisted selection because they allow simultaneous selection for multiple traits in both years of study, such as the number of kernels in row and the number of grains in ear (phi021/4), the number of plant after germination, the number of plants before harvest, and the number of ears (phi036/3), as well as moisture of grain and length of ears (phi061/2).

Dosage effects on morphological and quantitative traits in maize aneuploids

Genome ◽  
1996 ◽  
Vol 39 (5) ◽  
pp. 898-908 ◽  
Author(s):  
E. A. Lee ◽  
L. L. Darrah ◽  
E. H. Coe
Keyword(s):  
Zea Mays ◽  
Quantitative Traits ◽  
Zea Mays L ◽  
Genetic Relationships ◽  
Specific Chromosome ◽  
Phenotypic Changes ◽  
Dosage Effects ◽  
Quantitative Characters ◽  
Chromosome Arm ◽  
Chromosome Regions

Dosage effects generated by either loss or gain of a chromosome segment were used to identify chromosome regions associated with morphological and quantitative characters in maize (Zea mays L.). Using B–A translocation stocks introgressed into a B73Ht background, a chromosome arm dosage series in a Mo17Ht × B73Ht F1 hybrid background was created for 18 of the 20 chromosome arms. The dosage series was then evaluated for 12 quantitatively inherited characters to associate specific phenotypic changes in a trait with a specific chromosome arm. Not only did our results show the familiar aneuploid syndrome phenomenon, but differential dosage effects among particular chromosome arms were demonstrated. All the quantitative traits measured and all the chromosome arms examined in this study were responsive to changes in chromosome arm dosage. The possible bases behind those differences and their utility in identifying quantitative trait loci, as well as the genetic relationships among the group of quantitatively inherited characters studied, are considered. Key words : corn, chromosome arm, B–A translocations, dosage analysis.

scholarly journals Assessment of genetic parameters of degradability in maize grains due to indentation scores

2011 ◽  
Vol 68 (3) ◽  
pp. 347-352
Author(s):  
Livia Maria Chamma Davide ◽  
Magno Antônio Patto Ramalho ◽  
Ulisses José de Figueiredo ◽  
João Cândido de Souza
Keyword(s):  
Zea Mays ◽  
Dry Matter ◽  
Genetic Parameters ◽  
Zea Mays L ◽  
Grain Hardness ◽  
Visual Evaluation ◽  
Visual Grading ◽  
Grading Scale ◽  
Ruminal Degradability ◽  
Per Se

Maize (Zea mays L.) cultivars with dent grains present higher starch and dry matter ruminal degradability than those with flint grains. This study aimed to assess genetic parameters of degradability in maize grains of different textures and to verify whether there is an association between grain indentation score and ruminal dry matter (RDM) degradability. The evaluated progenies were obtained from the cross between the varieties Cristal (flint) and Cunha (dent), previously selected for grain hardness. Progenies were evaluated for an indentation score using a visual grading scale ranging from 1 (flint) to 5 (dent). To assess the RDM degradability, 5 g were cut into halves, weighed (five grams), stored in bags made of 100% "failet" cloth and incubated for 24 h in the rumen of three ruminally cannulated cows. There was genetic variability for RDM degradability and heritability was 46%, indicating the possibility of success using a selection. There was no association between indentation score and RDM degradability percentage; thus, visual evaluation not always reflects grain hardness per se since it indicates the pericarp aspect but not the endosperm constitution.

scholarly journals Genetic Study of Certain Quantitative Traits in Maize (Zea mays L.)

2020 ◽  
Vol 9 (5) ◽  
pp. 2508-2513
Author(s):  
Kanhaiya Lal ◽  
Sarvendra Kumar ◽  
Lokendra Singh ◽  
H. C. Singh ◽  
Mahak Singh ◽  
...  
Keyword(s):  
Zea Mays ◽  
Genetic Study ◽  
Quantitative Traits ◽  
Zea Mays L
Sign in / Sign up

Export Citation Format

Share Document