Divergent Phenotypic Recurrent Selection for Nitrate Reductase Activity and Correlated Responses in Maize

Divergent phenotype recurrent selection for post anthesis nitrate reductase activity (NRA) in maize was conducted through three cycles. The original material (C(,0)) was the maize (Zea mays L.) synthetic, Super Stiff Stalk Synthetic. The primary objectives were to determine: the selection response of NRA and the correlated responses in grain yield, grain protein, dry matter production and related parameters. The correlative responses were obtained by growing C(,0) and the four composites from selection under comparable single season environments. Auxiliary studies determined: the relationship between seedling and post anthesis NRA of individual plants; the NRA and plant productivity of S1 progeny from high and low NRA plants; the effect of supplementary nitrogen fertilization on yield and plant constituents of the composites selected for high and low NRA and the accuracy with which seasonal NRA can be used to estimate plant nitrogen content.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Agronomy

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Dunand, Richard Thomas

• Biology, Plant Physiology

Language dc:language

eng

Identifier

(UMI)AAI8026486

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/68461