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Heterobeltiosis in banana and genetic gains through crossbreeding

Batte, Michael and Uwimana, Brigitte and Swennen, Rony and Brown, Allan and Persson Hovmalm, Helena and Geleta, Mulatu Dida and Ortiz Rios, Rodomiro Octavio (2020). Heterobeltiosis in banana and genetic gains through crossbreeding.
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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.

Authors/Creators:Batte, Michael and Uwimana, Brigitte and Swennen, Rony and Brown, Allan and Persson Hovmalm, Helena and Geleta, Mulatu Dida and Ortiz Rios, Rodomiro Octavio
Title:Heterobeltiosis in banana and genetic gains through crossbreeding
Year of publishing :2020
Volume:36
Page range:1
Number of Pages:1
Publisher:MDPI
Language:English
Publication Type:Conference abstract
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Genetics and Breeding
Keywords:bananas, crossbreeding, hybrids, heterosis
URN:NBN:urn:nbn:se:slu:epsilon-p-105116
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-105116
Additional ID:
Type of IDID
DOI10.3390/proceedings2019036193
ID Code:16849
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
Deposited By: SLUpub Connector
Deposited On:07 Jul 2020 08:14
Metadata Last Modified:26 Aug 2020 17:48

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