Person: Pixley, K.V.
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Pixley
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K.V.
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Pixley, K.V.
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0000-0003-4068-7436 9 results
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- Eastern Africa regional maize nursery: project report for 1997 and 1998(CIMMYT, 2000) Ngwira, P.; Pixley, K.V.A Regional Eastern Africa collaborative maize nursery project was initiated with funding from the Rockefeller Foundation in 1998. The project facilitates development of disease resistant maize varieties for eastern Africa. It·also encourages sharing of information and breeding materials, particularly those developed through the project.
Publication - Genetic diversity of African maize inbred lines revealed by SSR markers(BioMed Central, 2007) Legesse, B.W.; Myburg, A.A.; Pixley, K.V.; Botha, A.M.Knowledge of genetic diversity (GD) and relationships among maize inbred lines is indispensable in a breeding program. Our objectives were to (1) investigate the level of genetic diversity among maize inbred lines and (2) assess their genetic structures by applying simple sequence repeat (SSR) markers. Fifty‐six highland and mid‐altitude maize inbred lines obtained from CIMMYT programs in Ethiopia and Zimbabwe were genotyped using 27 SSR loci. All of the genotypes studied could unequivocally be distinguished with the combination of the SSRs used. In total, 104 SSR alleles were identified, with a mean of 3.85 alleles per locus. The average polymorphism information content (PIC) was 0.58. GD expressed as Euclidean distance, varied from 0.28 to 0.73 with an average of 0.59. Cluster analysis using unweighted pair group method with arithmetic average (UPGMA) suggested five groups among the inbred lines. Most of the inbred lines adapted to the highlands and the mid‐altitudes were positioned in different clusters with a few discrepancies. The pattern of groupings of the inbred lines was mostly consistent with available pedigree information. The variability detected using SSR markers could potentially contribute towards effective utilization of the inbred lines for the exploitation of heterosis and formation of genetically diverse source populations in Ethiopian maize improvement programs
Publication - Characterization of maize germplasm grown in Eastern and Southern Africa: results of the 2000 regional trials coordinated by CIMMYT(CIMMYT, 2001) Vivek, B.; Banziger, M.; Pixley, K.V.
Publication - Characterization of maize germplasm grown in Eastern and Southern Africa: results of the 2003 regional trials coordinated by CIMMYT(CIMMYT, 2004) Vivek, B.; Banziger, M.; Pixley, K.V.
Publication - Characterization of maize germplasm grown in Eastern and Southern Africa: results of the 2002 regional trials coordinated by CIMMYT(CIMMYT, 2003) Vivek, B.; Banziger, M.; Pixley, K.V.
Publication - Characterization of maize germplasm grown in Eastern and Southern Africa: results of the 2004 regional trials coordinated by CIMMYT(CIMMYT, 2005) Vivek, B.; Banziger, M.; Pixley, K.V.The Summary Tables present grain yields averaged across sites with significant differences between entries, for each of the five to six environments. Data on agronomic performance such as anthesis date, plant and ear height, ear position, root and stem lodging, husk cover, ear rot, leaf diseases, grain weevil and stem borer damage, grain texture and grain moisture were averaged across all sites that provided results with significant differences between entries. If no data are presented for these traits, no trial data demonstrating significant differences for these traits was available.
Publication - Characterization of elite maize germplasm grown in Eastern and Southern Africa: results of the 1999 regional trials conducted by CIMMYT and the Maize and Wheat Improvement Research Network for SADC (MWIRNET)(CIMMYT, 2000) Banziger, M.; Pixley, K.V.; Vivek, B.; Zambezi, B.T.
Publication - Maize productivity gains through research and technology dissemination(CIMMYT, 1997) Ransom, J.K.; Palmer, A.F.E.; Zambezi, B.T.; Waddington, S.R.; Pixley, K.V.; Jewell, D.C.This publication contains papers presented at the fifth Eastern and Southern Africa Regional Maize Conference held in Arusha, Tanzania, June, 1996, documenting advances in maize productivity achieved through research and technology dissemination. Topics covered include the dissemination of maize farming technology and related impacts and challenges; productivity gains though genetic improvement and through identifying and integrating key management practices; stress tolerance for greater yield stability; soil fertility enhancing technologies; and disease management
Publication - Characterization of maize germplasm grown in Eastern and Southern Africa: results of the 2001 regional trials coordinated by CIMMYT(CIMMYT, 2002) Vivek, B.; Banziger, M.; Pixley, K.V.The Summary Tables present grain yields averaged across sites with significant differences between entries, for each of the five to six environments. Data on agronomic performance such as anthesis date, plant and ear height, ear position, root and stem lodging, husk cover, ear rot, leaf diseases, grain weevil and stem borer damage, grain texture and grain moisture were averaged across all sites that provided results with significant differences between entries. If no data are presented for these traits, no trial data demonstrating significant differences for these traits was available.
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