Genetics of Phosphorus Efficiency in Tropical Maize

摘要：

An inheritance study of P use efficiency and it component P acquisition and P internal utilization efficiency was conducted in seven tropical maize crosses obtained from inbred lines contrasting for these traits. The parents, Fls, BC1 and BC2 for both parents were evaluated in three low P and two high P environments. Non additive gene action (dominance and epistasis) was more important than additive gene action for the majority of the traits studied. Selection criteria and breeding strategies for these traits are discussed. Higher importance of P acquisition efficiency than P internal utilization efficiency over P use efficiency was verified.

作者: Sidney N Parentoni Maria Jose Vasconcelos Walter F Meireles Lauro Guimaraes Adelmo R Silva Robert E Schaffert Claudio L Souza Junior Vera MC Alves Antonio M Coelho Paulo E Guimaraes Cleso AP Pacheco Antonio C Oliveira Claudia T Guimaraes Jurandir V Magalhaes

作者单位: EMBRAPA-Maize and Sorghum C.P.151, Sete Lagoas, MG, Brazil, CEP 35701-970 Escola Superior de Agriculture Luiz de Queiroz-ESALQ-USP- Piracicaba- Sao Paulo- Brazil

会议类型: 国际会议

会议名称: The 7th International Symposium on Plant-Soil Interactions at Low pH(第七届低pH条件下植物-土壤交互作用国际研讨会)

会议地点: 广州

会议语种:英文

页码: 134-135

在线出版日期: 2009-05-17（万方平台首次上网日期，不代表论文的发表时间）