Home  /  EUREKA: Life Sciences  /  Núm: No. 1 ( Par: 0 (2023)  /  Article
ARTICLE
TITLE

Pedigree selection in two Egyptian cotton crosses for some traits

SUMMARY

One cycle of direct Pedigree selection was performed with selection intensity 5 % to improve productivity with accepTable fiber quality of the two Egyptian cotton ( G. barbadense L.) cross combinations. Comparing mean performance of F2 with those of F3 generation revealed increased mean values for all traits with advanced generations from F2 to F3, indicating accumulation of increasing alleles. The phenotypic variance for all traits was highly significant through F2 and F3 generations. Heritability estimates in broad sense improved considerably for all traits from F2 to advanced F3 generations. The genotypic correlation between three earliness characters was highly significant negative with most yield traits in F2 pop. I. While genotypic correlation between the previous earliness traits with yield traits in F3 generation was positively non-significant except for lint percentage that was highly significant positive. Genotypic correlation was highly significant positive among most yield and yield component traits in both generations, which helps pedigree selection to achieve high fast genetic advance. The data of the genotypic correlation among studied characters in F2 and F3 generations in population II showed highly significant negative genotypic correlation between earliness traits in F2 generation, changed to highly significant positive in F3 generation after applying pedigree selection. The genotypic correlation between most yield characters and fiber properties showed highly significant positive correlation in population II in both generations. The superior ten families in F3 generation in both populations ranked on high yield, yield components and fiber quality showed higher means than that of F2, F3, better parent and check in most yield characters

 Articles related

Nina Moravcíková,Radovan Kasarda    

Article Details: Received: 2020-09-10 | Accepted: 2020-10-30 | Available online: 2020-12-31https://doi.org/10.15414/afz.2020.23.04.236-240The aim was to review obtained results related to molecular-genetic analyses by high-density SNP chips and mtDNA in ... see more


Kristína Lehocká,Radovan Kasarda,Barbora Olšanská,Nina Moravcíková    

Received: 2020-10-22 Accepted: 2021-02-08 Available online: 2021-02-28https://doi.org/10.15414/afz.2021.24.mi-apa.11-14The aim of the study was to determine the state of genetic diversity in Charolais and Limousine populations. The analysis wasbased on t... see more


Ludmila Zavadilová,Eva Kašná,Zuzana Krupová,Anita Kranjcevicová    

Submitted 2020-07-16 | Accepted 2020-08-26 | Available 2020-12-01https://doi.org/10.15414/afz.2020.23.mi-fpap.233-240This study aims to genetically evaluate clinical mastitis (CM) in Holstein cattle using a two-trait repeatability animal model with the a... see more


Renzo Bonifazi,Jeremie Vandenplas,Jan ten Napel,Andrew Cromie,Roel F Veerkamp,Mario PL Calus    

Submitted 2020-07-02 | Accepted 2020-08-22 | Available 2020-12-01https://doi.org/10.15414/afz.2020.23.mi-fpap.144-155International evaluation models for beef cattle allow to compare animals’ estimated breeding values (EBV) across different countries, tha... see more


Liga Paura,Daina Jonkus    

Submitted 2020-06-26 | Accepted 2020-08-18 | Available 2020-12-01https://doi.org/10.15414/afz.2020.23.mi-fpap.52-57In this study, inbreeding and effective population size of the Latvian gene conservation cattle breeds Latvian Brown (LB) and Latvian Blue ... see more