Abstract:
Despite the ability of early maize to escape drought and provide
food early, it yields 20-30% less than late maize. The challenge
is to increase yield while maintaining earliness. A study is ongoing
at CIMMYT, Harare to determine whether grain fill rate
and duration can be used as selection criteria for yield. Fifteen
early maize inbred lines characterized revealed genetic variations
in grain fill rate and duration that was correlated to yield implying
that they are a better method for indirect selection for yield.
Therefore, a great potential for increasing the yield of early
maize exist using indirect selection methods.
En dépit de la capacité du maïs précoce d’échapper à la
sécheresse et de fournir la nourriture tôt, il rapporte 20-30% de
moins que le maïs tardif. Le défi est d’augmenter le rendement
tout en maintenant la précocité. Une étude est en cours à
CIMMYT- Harare pour déterminer si le taux et la durée de
suffisance de grain peuvent être employés comme critères de
selection pour le rendement. Quinze souches pures de maïs
précoce caractérisées ont indiqué des variations génétiques du
taux et de la durée de suffisance de grain qui a été corrélée au
rendement en impliquant qu’elles constituent une meilleure
méthode pour la selection indirecte pour le rendement. Par
conséquent, un grand potentiel pour augmenter le rendement
de maïs précoce existe en utilisant des méthodes de selection
indirectes.
Language:
English
Date of publication:
2010
Country:
Region Focus:
Southern Africa
University/affiliation:
Collection:
RUFORUM Conferences and Workshops
Agris Subject Categories:
Additional keywords:
Licence conditions:
Open Access
Access restriction:
Form:
Printed resource
Publisher:
ISSN:
E_ISSN:
Edition:
Extent:
487-493
Notes:
"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 stakeholers 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 plant breeding".
