Why speed up banana breeding?

Biotechnology and statistics to the rescue
The researchers collected data from the East Africa Highl and Banana and their hybrids planted in two fields in Ug anda for two crop cycles between 2013 and 2016. In total, 307 banana types of banana were observed under low and high input field management conditions. They collected data on 15 key traits of the crop and grouped them into five categories: plant stature, suckering behavior, black leaf streak resistance, fruit bunch, and fruit filling. The DNA differences between the bananas were mapped out using a technology called genotyping by sequencing (GBS). These data sets were then used to test the ability of six genomic prediction models to determine the bananas with the best traits through cross validation. The BayesB model was found superior to other models, particularly in predicting fruit filling and fruit bunch traits. The results demonstrate that genomic prediction is possible in banana breeding and the prediction accuracy can be improved by using models based on data from many different environments. The prediction accuracy within the training population based on genomic estimated breeding values (GEBV) was above 75% even with models that had low predictive abilities. The study was conducted as part of a collaboration of researchers from IITA, the Institute of Experimental Botany; the Centre of Plant Structural and Functional Genomics; Palacký University, Olomouc, Czech Republic; and the Laboratory of Tropical Crop Improvement, Division of Crop Biotechnics, Katholieke Universiteit, Belgium. ### À propos de l'IITA, iita.org The International Institute of Tropical Agriculture (IITA) is a not-for-profit institution that generates agricultural innovations to meet Africa’s most pressing challenges of hunger, malnutrition, poverty, and natural resource degradation. Working with various partners across sub-Saharan Africa, we improve livelihoods, enhance food and nutrition security, increase employment, and preserve natural resource integrity. IITA is a member of CGIAR, a global agriculture research partnership for a food secure future. About CGIAR, cgiar.org CGIAR is a global research partnership for a food-secure future. CGIAR research is dedicated to reducing rural poverty, increasing food security, improving human health and nutrition, and ensuring sustainable management of natural resources. It is carried out by the 15 Centers that are members of the CGIAR Consortium in close collaboration with hundreds of partners, including national and regional research institutes, civil society organizations, academia, development organizations and the private sector. www.cgiar.org Contact presse Katherine Lopez, Head of Communication, k.lopez@cgiar.org, +234 803 978 4454Contribué par
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