Author: Publisher: CIMMYT
ISBN: 9290592397
Category : Corn
Languages : en
Pages : 62
Book Description
Characterization of Maize Germplasm Grown in Eastern and Southern Africa
Author: Publisher: CIMMYT
ISBN: 9290592397
Category : Corn
Languages : en
Pages : 62
Book Description
Characterization of Maize Germplasm Grown in Eastern and Southern Africa
Author: Characterization of Maize Germplasm Grown in Eastern and Southern Africa
Author: C. MagorokoshoCharacterization of Maize Germplasm Grown in Eastern and Southern Africa
Author: C. MagorokoshoCharacterization of Maize Germplasm Grown in Eastern and Southern Africa
Author: CIMMYT Regional Office (Zimbabwe)Publisher:
ISBN: 9789706481139
Category : Corn
Languages : en
Pages : 76
Book Description
Characterization of elite maize germplasm grown in Eastern and Southern Africa
Author: M. BanzigerCharacterization of Maize Germplasm Growth in Eastern and Southern Africa
Author: CIMMYT Regional Office (Zimbabwe)Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 53
Book Description
Characterization of Maize Testing Locations in Eastern and Southern Africa
Author: Francis W. MaideniPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The region of eastern and southern Africa is very diverse in environments and agronomic practices. The region has one of the highest per capita consumption of maize (Zea mays. L), which is predominantly produced by smallholder farmers. Some important constraints facing these farmers include drought and low fertility. For decades, the International Center for Wheat and Maize Improvement (CIMMYT) has been involved in developing maize genotypes that have high grain yields and are tolerant to drought, low fertility and other important constraints. This germplasm is developed for wide adaptation. However, the development of superior germplasm is significantly affected by interaction between genotypes and the environment (i.e., genotype by environment interaction, GEI). To estimate and understand GEI maize genotypes are evaluated in a range of environments representing as much variability of the target growing areas as possible. Because of dwindling resources needed to conduct testing in the region, it may not be possible to test in all potential target areas. Therefore, a careful process of site selection for testing is essential to improve efficiencies in cultivar testing and deployment. The objective of this research was to characterize the maize testing locations of the eastern and southern Africa region. Historical data from CIMMYT Regional Trials from 1999 to2003 was used to characterize the environments and estimate genetic parameters. Environmnent and GEI showed consistently high contributions to the total variation observed among genotypes for grain yield. Environment contributed over 60% and sometimes up to 85% of total variation observed. Sequential retrospective pattern analysis (Seqret) was conducted on the adjusted standardized grain yield. A total of 7 groups of environments were identified. Repeatabilites, a measure of the proportion of phenotypic variation that is due to genetic differences, was reduced under stress conditions. The relationship among traits showed that anthesis-silking interval (ASI) is an important selective trait, which can improve selection efficiency for grain yield under stress conditions. Stability analysis provided an opportunity to observe the response and adaptation of genotypes to a wide range of environments. Variety ZM621 was a stable and high yielding genotype.
Maize Breeding Research in Eastern and Southern Africa
Author: Rashid M. HassanPublisher: CIMMYT
ISBN: 9706480722
Category : Corn
Languages : en
Pages : 43
Book Description
Maize Germplasm
Author: Mohamed A. El-EsawiPublisher: BoD – Books on Demand
ISBN: 1789230381
Category : Science
Languages : en
Pages : 102
Book Description
Maize is an important staple food crop worldwide. It is the third most important cereal crop after wheat and rice and is economically used for both livestock feeds and human consumption. The latest maize research has opened up new opportunities for crop improvement. This book brings together recent work and advances that have recently been made in the dynamic fields of genetic characterization, molecular breeding, genetic engineering technologies, and mapping of agronomic traits of global maize germplasm. It also provides new insights into and sheds new light regarding the current research trends and future research directions in maize. This book will provoke interest in many readers, researchers, and scientists, who can find this information useful for the advancement of their research works toward maize improvement.