Skip to main content
Conference abstract - Peer-reviewed, 2020

Heterobeltiosis in banana and genetic gains through crossbreeding

Batte, Michael ; Batte, Michael; Uwimana, Brigitte; Swennen, Rony; Brown, Allan; Persson Hovmalm, Helena; Geleta, Mulatu Dida; Ortiz Rios, Rodomiro Octavio

Abstract

Heterosis, or hybrid vigour, is the superiority of the hybrid for a certain trait over the mean of its two parents. Heterobeltiosis is a form of heterosis where the hybrid is superior to its best parent. Banana breeding is a tedious, time-consuming process, taking up to two decades to develop a hybrid. Understanding heterosis in banana breeding will contribute to selecting right breeding materials for further crossing, thus increasing banana breeding efficiency. Here we document heterobeltiosis by using the recently bred NARITA ‘Matooke’ hybrids and their ancestors. NARITA hybrids, their parents (4x and 2x), grandparents (3x and 2x), and local 3x ‘Matooke’ cultivar checks were planted in a rectangular lattice design with two replications. Yield and other agronomic data were collected at flowering and harvest. The NARITAs were compared with their 3x ‘Matooke’ grandmothers. Heterobeltiosis on bunch weight was calculated with the data of 3 cycles. All the NARITAs showed heterobeltiosis for bunch weight. NARITA 17 had the highest grandparent heterobeltiosis (ca. 250%). Genetic gains due to crossbreeding were determined for fruit yield considering three generations: matooke cultigen (C0), primary tetraploid hybrids (C1) and secondary tetraploid hybrids (C2). The average genetic gain (from C0 to C2) rates for bunch weight (kg) and yield potential (t ha−1 year−1) were 1.4% and 1.3% per year, respectively.

Keywords

bananas; crossbreeding; hybrids; heterosis

Published in

Proceedings
2020, volume: 36, number: 1

Conference


Third International Tropical Agriculture Conference (TropAg 2019), 191111-191113, Brisbane, Australia

Authors' information

Batte, Michael (Batte, Michael)
Swedish University of Agricultural Sciences, Department of Plant Breeding
International Institute of Tropical Agriculture (IITA)
Uwimana, Brigitte
International Institute of Tropical Agriculture (IITA)
Swennen, Rony
International Institute of Tropical Agriculture (IITA)
Brown, Allan
International Institute of Tropical Agriculture (IITA)
Swedish University of Agricultural Sciences, Department of Plant Breeding
Geleta, Mulatu Dida (Dida, Mulatu Geleta)
Swedish University of Agricultural Sciences, Department of Plant Breeding
Swedish University of Agricultural Sciences, Department of Plant Breeding

UKÄ Subject classification

Agricultural Science
Genetics and Breeding

Publication Identifiers

DOI: https://doi.org/10.3390/proceedings2019036193

URI (permanent link to this page)

https://res.slu.se/id/publ/105116