Record Details

Significant progressive heterobeltiosis in banana crossbreeding

CGSpace

View Archive Info
 
 
Field Value
 
Title Significant progressive heterobeltiosis in banana crossbreeding
 
Creator Batte, M.
Nyine, M.
Uwimana, B.
Swennen, Rony L.
Akech, V.
Brown, A.
Hovmalm, H.P.
Geleta, M.
Ortiz, R.
 
Subject bananas
east africa
genetics
musa
breeding
 
Description Open Access Journal; Published online: 27 Oct 2020
Background
Heterobeltiosis is the phenomenon when the hybrid’s performance is superior to its best performing parent. Banana (Musa spp. AAA) breeding is a tedious, time-consuming process, taking up to two decades to develop a consumer acceptable hybrid. Exploiting heterobeltiosis in banana breeding will help to select breeding material with high complementarity, thus increasing banana breeding efficiency. The aim of this study was therefore to determine and document the level of heterobeltiosis of bunch weight and plant stature in the East African highland bananas, in order to identify potential parents that can be used to produce offspring with desired bunch weight and stature after a few crosses.

Results
This research found significant progressive heterobeltiosis in cross-bred ‘Matooke’ (highland cooking) banana hybrids, also known as NARITAs, when grown together across years with their parents and grandparents in Uganda. Most (all except 4) NARITAs exhibited positive heterobeltiosis for bunch weight, whereas slightly more than half of them had negative heterobeltiosis for stature. The secondary triploid NARITA 17 had the highest heterobeltiosis for bunch weight: 249% versus its ‘Matooke’ grandparent and 136% against its primary tetraploid parent. Broad sense heritability (across three cropping cycles) for yield potential and bunch weight were high (0.84 and 0.76 respectively), while that of plant stature was very low (0.0035). There was a positive significant correlation (P < 0.05) between grandparent heterobeltiosis for bunch weight and genetic distance between parents (r = 0.39, P = 0.036), bunch weight (r = 0.7, P 
 
Date 2020
2021-07-09T12:27:20Z
2021-07-09T12:27:20Z
 
Type Journal Article
 
Identifier Batte, M., Nyine, M., Uwimana, B., Swennen, R., Akech, V., Brown, A., ... & Ortiz, R. (2020). Significant progressive heterobeltiosis in banana crossbreeding. BMC Plant Biology, 20:489, 1-12.
1471-2229
https://hdl.handle.net/10568/114242
https://doi.org/10.1186/s12870-020-02667-y
BIOTECH & PLANT BREEDING
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format 1-12
application/pdf
 
Source BMC Plant Biology