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Release of orange-fleshed sweetpotato (Ipomoea batatas [l.] Lam.) cultivars in Mozambique through an accelerated breeding scheme

Andrade, Maria I. and Ricardo, J. and Naico, Abdul and Alvaro, Abilio and Makunde, Godwill S. and Low, Jan and Ortiz Rios, Rodomiro Octavio and Grüneberg, Wolfgang J. (2017). Release of orange-fleshed sweetpotato (Ipomoea batatas [l.] Lam.) cultivars in Mozambique through an accelerated breeding scheme. Journal of agricultural science. 155, 919-929
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Official URL: https://dx.doi.org/10.1017/10.1017/S00218596160009...

Abstract

Sweetpotato breeding requires at least 5 years to obtain an advanced breeding clone for further testing with the goal of cultivar release. An accelerated breeding scheme (ABS) can be feasible if the genotype x year interaction is low. The objectives of the present study were to describe an ABS for sweetpotato and to investigate the efficiency of this breeding scheme for selecting high-yielding and well-adapted orange-fleshed sweetpotato (OFSP) cultivars with high -carotene (BC) content. More than 198 500 seeds from two crossing blocks were germinated and rapidly multiplied for evaluation in observation trials at four breeding locations in Mozambique. Breeding clones with storage root yields above 10 t/ha were advanced to preliminary and advanced yield trials across four sites and for 3 years. As a result, 64 high-yielding OFSP breeding clones were selected and evaluated in four mega-environments following a randomized complete block design with three replicates at Angonia, Chokwe, Gurue and Umbeluzi. Data from multi-environment trials were subjected to single site and combined analysis of variance as well as to stability analysis. The genotype x environment interaction was highly significant for storage root and vine yields, dry matter (DM) and BC content. Storage root yield and DM content for 15 OFSP breeding clones ranged from 14.9 to 27.1 t/ha and from 24.8 to 32.8%, respectively. BC content, iron and zinc ranged from 5.9 to 38.4, 1.6 to 2.1 and 1.1 to 1.5 mg/100 g dry weight, respectively. The OFSP breeding clones also met the culinary tastes required by local consumers in Mozambique. The proposed ABS seems to be an attractive scheme for genetic enhancement of sweetpotato.

Authors/Creators:Andrade, Maria I. and Ricardo, J. and Naico, Abdul and Alvaro, Abilio and Makunde, Godwill S. and Low, Jan and Ortiz Rios, Rodomiro Octavio and Grüneberg, Wolfgang J.
Title:Release of orange-fleshed sweetpotato (Ipomoea batatas [l.] Lam.) cultivars in Mozambique through an accelerated breeding scheme
Series/Journal:Journal of agricultural science (1469-5146)
Year of publishing :2017
Volume:155
Page range:919-929
Number of Pages:11
Publisher:Cambridge University Press
ISSN:1469-5146
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Genetics and Breeding
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Horticulture
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Agrovoc terms:sweet potatoes, cultivation, clones
Keywords:sweetpotato, accelerated breeding scheme (ABS), Ipomoea batatas, Mozambique
URN:NBN:urn:nbn:se:slu:epsilon-e-4577
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4577
Additional ID:
Type of IDID
DOI10.1017/S002185961600099X
Web of Science (WoS)000405630900005
ID Code:14851
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
Deposited By: SLUpub Connector
Deposited On:18 Dec 2017 10:16
Metadata Last Modified:18 Dec 2017 10:16

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