Abstract
The best agro-industrial performance presented by a crop genotype in one environment may not be reproduced in another owing to complex edaphoclimatic variations. Therefore, breeding programs are constantly attempting to obtain, through artificial hybridization, novel genotypes with high adaptability and stability potential. The objective of this study was to analyze genetic divergence in sugarcane based on the genotypic values of adaptability and stability. A total of 11 sugarcane genotypes were analyzed for eight agro-industrial traits. The genotypic values of the traits were determined using mixed model methodology, and the genetic divergence based on phenotypic and genotypic values was measured using the Mahalanobis distance. The distance matrices were correlated using the Mantel test, and the genotypes were grouped using the Tocher method. Genetic divergence is more accurate when based on genotypic values free of genotype–environment interactions and will differ from genetic divergence based on phenotypic data, changing the genotype allocations in the groups. The above methodology can be applied to assess genetic divergence to obtain novel sugarcane genotypes with higher productivity that are adapted to intensive agricultural systems using diverse technologies. This methodology can also be tested in other crops to increase accuracy in selecting the parents to be crossed.
Highlights
Significant differences between genotypes, detected using analysis of variance (ANOVA), provide an indication of variations in the phenotypic expression of evaluated traits that are considered the most important components of sugarcane productivity, and can be attributed to the different alleles that comprise the genetic makeup of the respective genotypes
The importance of biological variation has been highlighted in many studies, including by Mougi [24], who stated that it is an essential element for the operation of natural selection
Genotypic divergence in sugarcane based on genotypic values of adaptability and stability subsequent recommendation in commercial planting aimed at increasing the agro-industrial productivity of sugarcane [25]
Summary
The objective of this study was to analyze genetic divergence in sugarcane based on the genotypic values of adaptability and stability
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
