Obtaining of a corn population for tolerance to adverse factors in three Venezuelan States

Bioagro

Hernández-Jiménez, Alexander¹  Barrientos-Acosta, Venancio¹  Chassaigne-Ricciulli, Alberto¹  Fundación para la investigación Agrícola Danac, San Felipe, Venezuela¹  Universidad Centroccidental Lisandro Alvarado, Barquisimeto, Venezuela¹ 

关键词: Recurrent selection;    acid soils;    water deficit;   

DOI  :  

学科分类：农业科学（综合）

来源: Universidad Centroccidental Lisandro Alvarado * Decanato de Agronomia

【 摘 要 】

Maize (Zea mays L.) is produced in Venezuela in a wide diversity of agro ecological conditions. Among the most important biotic and abiotic limitations, there are diseases, soil oxygen deficit due to excess of rains, water deficit by drought, soil acidity and low soil fertility. Population genetic improvement facilitates the selection of open pollinated varieties and inbred lines. The objective of this research was to synthesize and to start the improvement of the white grain basic maize population FD-01B, with genetic base for adaptation to adverse factors in three maize-producer states of Venezuela. Seven populations and varieties and three pool of improved inbred lines were used as progenitors. From the original population FD-01B, 900 S1 families were selected, 300 were randomized to Portuguesa (P), Yaracuy (Y) and Guárico (G) states, thus starting the genetic improvement through recurrent selection of S1 families from FD-01BP, FD-01BY and FD-01BG. This research allowed to synthesize a new maize population and to start improving of three subpopulations adapted to adverse agro ecological conditions in Venezuela. The population FD-01B original and subpopulation seeds are available for breeding programs of public and private entities.

【 授权许可】

Unknown