eprintid: 9998
rev_number: 9
eprint_status: archive
userid: 1305
dir: disk0/00/00/99/98
datestamp: 2017-05-11 04:21:04
lastmod: 2017-05-11 04:21:04
status_changed: 2017-05-11 04:21:04
type: article
metadata_visibility: show
creators_name: Naidoo, S I M
creators_name: Laurie, S M
creators_name: Odeny, D A
creators_name: Vorster, B J
creators_name: Mphela, W M
creators_name: Greyling, M M
creators_name: Crampton, B G
icrisatcreators_name: Odeny, D A
affiliation: Department of Plant Production and Soil Science, University of Pretoria (Pretoria)
affiliation: Agricultural Research Council-Vegetable and Ornamental Plants (ARC-VOP) (Pretoria)
affiliation: ARC-Biotechnology Platform (Pretoria)
affiliation: ICRISAT (Nairobi)
affiliation: Department of Plant Science, University of Pretoria (Pretoria)
country: South Africa
country: Kenya
title: Genetic analysis of yield and flesh colour in sweetpotato
ispublished: pub
subjects: s2.13
subjects: s28
divisions: CRPS5
full_text_status: public
keywords: b-carotene, combining ability, heritability, root yield, genetic diversity, sweetpotato
note: The Agricultural Research Council (ARC) funded
the study Owen Sithole College of Agriculture
maintained the experiment. Dr Marde Booyse
(ARC-Biometry Unit), Ms Tsedal Gebramarian
(University of Pretoria) and Prof. Hussein Shimelis
(University of Kwa-Zulu Natal) assisted with
statistical analysis.
abstract: Pre-breeding information on the inheritance mechanism of important sweetpotato (Ipomoea batatas L.) agronomic
traits is still limited. This study aimed at assessing the inheritance of five sweetpotato agronomic traits, viz.
marketable fresh root yield (MFRY) and number (MNR), total fresh root yield (TFRY) and number (TNR) and
root b-carotene content (RBCC). A 5 x 5 full diallel was performed and F1 progenies, evaluated in two
environments alongside the parents. The data were subjected to ANOVA and DiallelSAS-05 Griffing’s method 1.
Simple Sequence Repeat (SSR) based genetic distance and cluster analysis were performed on the parental lines
using Jaccard’s coefficient and the unweighted pair group method with arithmetic averages (UPGMA). Significant
differences (P<0.01) were detected among the genotypes for MFRY, MNR, TFRY, TNR and RBCC. Significant
general and specific combining ability (P<0.01) effects were observed for all five traits. Additive gene action was
predominantly involved in the inheritance of these traits. High broad sense heritability values were observed for
the four yield parameters and for RBCC. The Jaccard’s similarity coefficient indicated moderate to low genetic
similarity distances among the parents, implying high diversity. The knowledge on the inheritance and diversity
of the parental genotypes enables more effective choice of parents in breeding improved varieties.
date: 2016
date_type: published
publication: African Crop Science Journal
volume: 24
number: 1
publisher: African Crop Science Society
pagerange: 61
id_number: 10.4314/acsj.v24i1.5
refereed: TRUE
issn: 1021-9730
official_url: http://dx.doi.org/10.4314/acsj.v24i1.5
related_url_url: https://scholar.google.co.in/scholar?q=Genetic+analysis+of+yield+and+flesh+colour+traits+in+sweetpotato&btnG=&hl=en&as_sdt=0%2C5
related_url_type: pub
citation:   Naidoo, S I M and Laurie, S M and Odeny, D A and Vorster, B J and Mphela, W M and Greyling, M M and Crampton, B G  (2016) Genetic analysis of yield and flesh colour in sweetpotato.  African Crop Science Journal, 24 (1).  p. 61.  ISSN 1021-9730     
document_url: http://oar.icrisat.org/9998/1/131191-354659-1-PB.pdf