Luis Fernando Delgado, Danilo E. Moreta, Nelson Morante, Jorge Ivan Lenis, Johan Steven Aparicio, Luis Fernando Londoño, Sandra Milena Salazar, Thierry Tran, Maria Alejandra Ospina, Jorge Luis Luna Melendez, Jhon Larry Moreno Alzate, Hernan Camilo Vargas, Lizbeth Pino Duran, Elvia Amparo Rosero Alpala, Xiaofei Zhang
{"title":"Assessing realized genetic gains in biofortified cassava breeding for over a decade: Enhanced nutritional value and agronomic performance","authors":"Luis Fernando Delgado, Danilo E. Moreta, Nelson Morante, Jorge Ivan Lenis, Johan Steven Aparicio, Luis Fernando Londoño, Sandra Milena Salazar, Thierry Tran, Maria Alejandra Ospina, Jorge Luis Luna Melendez, Jhon Larry Moreno Alzate, Hernan Camilo Vargas, Lizbeth Pino Duran, Elvia Amparo Rosero Alpala, Xiaofei Zhang","doi":"10.1002/csc2.21369","DOIUrl":null,"url":null,"abstract":"<p>Biofortified cassava (<i>Manihot esculenta</i>) plays a crucial role in enhancing the nutritional value of this essential staple, particularly in regions with limited dietary diversity and prevalent nutritional deficiencies. The cassava program at the International Center of Tropical Agriculture has dedicated over a decade to increase β-carotene content in biofortified cassava, simultaneously focusing on improving yield, dry matter, and plant architecture. This paper presents realized genetic gains in biofortified cassava by analyzing the data from replicated multilocation breeding yield trials at the target population of environments spanning a 10-year period (2013–2022). Following data curation, we observed significant positive genetic gains per year for β-carotene content (7.03%), fresh yield (4.15%), dry matter content (0.55%), and height at the first branch (1.29%). A negative correlation between β-carotene content and dry matter content was observed within 78% of trials. Moreover, our study uncovered a significant negative correlation between β-carotene content and fresh root yield (<i>r</i> = −0.22, <i>p</i> < 0.01) and an unfavorable positive correlation between β-carotene content and the number of branches (<i>r</i> = 0.23, <i>p</i> < 0.01). Such negative correlations between β-carotene content and farm-preferred traits presented substantial challenges for the development of biofortified cassava varieties. This research showed significant genetic gains and navigated the complexities of biofortified cassava development, providing breeding insights to enhance nutritional value while optimizing agronomic performance.</p>","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"64 6","pages":"3242-3258"},"PeriodicalIF":2.0000,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/csc2.21369","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Crop Science","FirstCategoryId":"97","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/csc2.21369","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"AGRONOMY","Score":null,"Total":0}
引用次数: 0
Abstract
Biofortified cassava (Manihot esculenta) plays a crucial role in enhancing the nutritional value of this essential staple, particularly in regions with limited dietary diversity and prevalent nutritional deficiencies. The cassava program at the International Center of Tropical Agriculture has dedicated over a decade to increase β-carotene content in biofortified cassava, simultaneously focusing on improving yield, dry matter, and plant architecture. This paper presents realized genetic gains in biofortified cassava by analyzing the data from replicated multilocation breeding yield trials at the target population of environments spanning a 10-year period (2013–2022). Following data curation, we observed significant positive genetic gains per year for β-carotene content (7.03%), fresh yield (4.15%), dry matter content (0.55%), and height at the first branch (1.29%). A negative correlation between β-carotene content and dry matter content was observed within 78% of trials. Moreover, our study uncovered a significant negative correlation between β-carotene content and fresh root yield (r = −0.22, p < 0.01) and an unfavorable positive correlation between β-carotene content and the number of branches (r = 0.23, p < 0.01). Such negative correlations between β-carotene content and farm-preferred traits presented substantial challenges for the development of biofortified cassava varieties. This research showed significant genetic gains and navigated the complexities of biofortified cassava development, providing breeding insights to enhance nutritional value while optimizing agronomic performance.
期刊介绍:
Articles in Crop Science are of interest to researchers, policy makers, educators, and practitioners. The scope of articles in Crop Science includes crop breeding and genetics; crop physiology and metabolism; crop ecology, production, and management; seed physiology, production, and technology; turfgrass science; forage and grazing land ecology and management; genomics, molecular genetics, and biotechnology; germplasm collections and their use; and biomedical, health beneficial, and nutritionally enhanced plants. Crop Science publishes thematic collections of articles across its scope and includes topical Review and Interpretation, and Perspectives articles.