We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Relative importance of gene effects for nitrogen-use efficiency in popcorn.
- Authors
Santos, Adriano dos; Amaral Júnior, Antônio Teixeira do; Fritsche-Neto, Roberto; Kamphorst, Samuel Henrique; Ferreira, Fernando Rafael Alves; Amaral, José Francisco Teixeira do; Vivas, Janieli Maganha Silva; Santos, Pedro Henrique Araújo Diniz; Lima, Valter Jário de; Khan, Shahid; Schmitt, Kátia Fabiane Medeiros; Leite, Jhean Torres; Junior, Divino Rosa dos Santos; Bispo, Rosimeire Barboza; Santos, Talles de Oliveira; Oliveira, Uéliton Alves de; Guimarães, Lauro José Moreira; Rodriguez, Oscar
- Abstract
The objective of this study was to evaluate the effects of additive and non-additive genes on the efficiency of nitrogen (N) use and N responsiveness in inbred popcorn lines. The parents, hybrids and reciprocal crosses were evaluated in a 10x10 triple lattice design at two sites and two levels of N availability. To establish different N levels in the two experiments, fertilization was carried out at sowing, according to soil analysis reports. However, for the experiments with ideal nitrogen availability, N was sidedressed according to the crop requirement, whereas for the N-poor experiments sidedressing consisted of 30% of that applied in the N-rich environment. Two indices were evaluated, the Harmonic Mean of the Relative Performance (HMRP) and Agronomic Efficiency under Low Nitrogen Availability (AELN), both based on grain yield at both N levels. Both additive and non-additive gene effects were important for selection for N-use efficiency. Moreover, there was allelic complementarity between the lines and a reciprocal effect for N-use efficiency, indicating the importance of the choice of the parents used as male or female. The best hybrids were obtained from inbred popcorn lines with contrasting N-use efficiency and N responsiveness.
- Subjects
BOTANY; SOIL testing; POPCORN; PLANT genetics; GRAIN yields; GENES
- Publication
PLoS ONE, 2019, Vol 14, Issue 9, p1
- ISSN
1932-6203
- Publication type
Article
- DOI
10.1371/journal.pone.0222726