About the RUFORUM 2010 Biennal Conference
"The 2010 RUFORUM Biennial Conference was the second in the series. The main objective of the Biennial conferences is to provide a platform for agricultural research for development stakeholders in Africa and beyond to actively exchange findings and experiences, while at the same time learning lessons towards improving performance of the agricultural sector and ultimately people’s livelihoods. The biennial conference is RUFORUM’s most comprehensive meeting for the diversity of stakeholders in agriculture. It is especially dedicated to graduate students and their supervisors, grantees in RUFORUM member universities and alumni. It is a platform for peer review, quality control, mentorship, networking and shared learning. This record contains an extended abstract accepted under the theme of Plant Breeding"
Enhancing sweetpotato resistance to African weevils (Cylas puncticollis and Cylas brunneus) through transgenic breeding
Abstract:
Sweetpotato production is greatly constrained by two weevil
species; Cylas puncticollis and C. brunneus that cause yield
losses of up to 80%. The use of resistant sweetpotato cultivars
is the most sustainable strategy to control the weevils. However,
little success has been realized in developing resistant cultivars.
Genetic engineering is a more viable option that offers a means
to introduce resistant genes into sweetpotato. In this study the
transgenic variety Jewel events with cry7Aa1, cry3Ca1, ET33-
34, cry7Aa1+cry3Ca1 and cry7Aa1+ ET33-34 will be used
as source of resistance in transgenic breeding. The progenies
will be selected for the presence of the Bt protein product and
evaluated for weevil resistance and agronomic performance.
The best performing progenies will be further used in the
sweetpotato breeding programme to enhance resistance to the
African weevils.
La production des patates douces est considérablement
menacée par deux espèces de charançon: Cylas puncticollis
et C. brunneus. Ces espèces causent des pertes de rendement
allant jusqu’à 80%. L’utilisation des variétés résistantes de patate
douce est la stratégie la plus durable pour surveiller ces
charançons. Cependant, peu de succès ont été réalisés dans le
développement des variétés résistantes. Le génie génétique
est une option plus viable qui offre un moyen d’introduire les
gènes résistants dans la patate douce. Dans cette étude, les
résultats de Jewel sur la variété transgénique avec cry7Aa1,
cry3Ca1, ET33-34, cry7Aa1+cry3Ca1 et cry7Aa1+ ET33-
34 seront employés comme source de résistance dans la
reproduction transgénique. Les progénitures seront choisies en
fonction de la présence du produit protéinique Bt et évaluées
en fonction de la résistance face au charançon et de la
performance agronomique. Les meilleures progénitures en performance seront encore employées dans le programme de
reproduction des patates douces pour améliorer la résistance
contre les charançons africains.
Language:
English
Date of publication:
2010
Country:
Region Focus:
East Africa
University/affiliation:
Collection:
RUFORUM Conferences and Workshops
Agris Subject Categories:
Agrovoc terms:
Additional keywords:
Licence conditions:
Open Access
Access restriction:
Form:
Printed resource
Publisher:
Extent:
519-523
Notes:
