scholarly journals Direct and Indirect Selection for Grain Yield in Bread Wheat (Triticum aesitivum L.)

2020 ◽  
Vol 11 (3) ◽  
pp. 241-249
Author(s):  
Hassan Fouad ◽  
M. El-Ashmoony ◽  
A. El-Karamity ◽  
M. Sarhan
Keyword(s):  
Grain Yield ◽  
Bread Wheat ◽  
Indirect Selection ◽  
Selection For

scholarly journals Early generation selection strategy for yield and yield components in white oat

2005 ◽  
Vol 62 (4) ◽  
pp. 357-365 ◽  
Author(s):  
Giovani Benin ◽  
Fernando Irajá Félix de Carvalho ◽  
Antônio Costa de Oliveira ◽  
Claudir Lorencetti ◽  
Igor Pires Valério ◽  
...  
Keyword(s):  
Grain Yield ◽  
Indirect Selection ◽  
Grain Weight ◽  
Yield Potential ◽  
High Yield ◽  
Direct Selection ◽  
Selection Strategy ◽  
Breeding Method ◽  
Growing Seasons ◽  
Selection For

Several studies have searched for higher efficiency on plant selection in generations bearing high frequency of heterozygotes. This work aims to compare the response of direct selection for grain yield, indirect selection through average grain weight and combined selection for higher yield potential and average grain weight of oat plants (Avena sativa L.), using the honeycomb breeding method. These strategies were applied in the growing seasons of 2001 and 2002 in F3 and F4 populations, respectively, in the crosses UPF 18 CTC 5, OR 2 <FONT FACE=Symbol>´</FONT> UPF 7 and OR 2 <FONT FACE=Symbol>´</FONT> UPF 18. The ten best genetic combinations obtained for each cross and selection strategy were evaluated in greenhouse yield trials. Selection of plants with higher yield and average grain weight might be performed on early generations with high levels of heterozygosis. The direct selection for grain yield and indirect selection for average grain weight enabled to increase the average of characters under selection. However, genotypes obtained through direct selection presented lower average grain weight and those obtained through the indirect selection presented lower yield potential. Selection strategies must be run simultaneously to combine in only one genotype high yield potential and large grain weight, enabling maximum genetic gain for both characters.

scholarly journals Selection for high spike fertility index increases genetic progress in grain yield and stability in bread wheat

Euphytica ◽  
2018 ◽  
Vol 214 (7) ◽  
Author(s):  
M. P. Alonso ◽  
N. E. Mirabella ◽  
J. S. Panelo ◽  
M. G. Cendoya ◽  
A. C. Pontaroli
Keyword(s):  
Grain Yield ◽  
Bread Wheat ◽  
Genetic Progress ◽  
Fertility Index ◽  
Selection For

scholarly journals Path analysis and expected response in indirect selection for grain yield in soybean

2006 ◽  
Vol 6 (2) ◽  
pp. 151-159 ◽  
Author(s):  
I.M. Bárbaro ◽  
M.A.P.C. Centurion ◽  
A.O. Mauro ◽  
S.H. Unêda-Trevisoli ◽  
N.H.C. Arriel ◽  
...  
Keyword(s):  
Grain Yield ◽  
Path Analysis ◽  
Indirect Selection ◽  
Selection For

Wheat Breeding Nurseries, Target Environments, and Indirect Selection for Grain Yield

Crop Science ◽  
1997 ◽  
Vol 37 (4) ◽  
pp. 1168-1176 ◽  
Author(s):  
M. Cooper ◽  
R. E. Stucker ◽  
I. H. DeLacy ◽  
B. D. Harch
Keyword(s):  
Grain Yield ◽  
Indirect Selection ◽  
Wheat Breeding ◽  
Selection For

scholarly journals Correlations and path analysis in agronomic traits of soybeans under defoliation

2020 ◽  
Vol 36 (5) ◽  
Author(s):  
Alan Mario Zuffo ◽  
Francisco de Alcântara Neto ◽  
Tiago Zoz ◽  
Rafael Felippe Ratke ◽  
Jorge González Aguilera ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Agronomic Traits ◽  
Block Design ◽  
Indirect Selection ◽  
Additional Treatment ◽  
Leaf Damage ◽  
Thousand Grain Weight ◽  
Randomized Block Design ◽  
Selection For

 Stress events or leaf damage can alter the redistribution of photoassimilates and modify the morphological traits directly related to grain yield. This study aimed to evaluate the influence of agronomic traits on grain yield in soybean crop in function of leaf defoliation. The experiment consisted of a randomized block design with three replications, arranged in a 6 x 3 + 1 factorial scheme. The factors were composed by six reprodutive stages (R1, R2, R3, R4, R5, and R6) and three defoliation levels (33%, 66%, and 99%), and one additional treatment without defoliation (control). The following traits were evaluated: plant height, number of pods per plant, number of grains per pod, thousand grain weight, and grain yield. The magnitudes of the correlations between the same traits showed high oscillation according to the defoliation level. Results revealed the potential for the indirect selection for grain yield by the traits plant height and number of grains per pods under 0% of defoliation and by the trait number of pods per plant under 33% of defoliation.

Sign in / Sign up

Export Citation Format

Share Document