Classification of Inbreds for Their Value in Improving Elite Maize Hybrids

The identification of inbred lines (I$\sb{\rm w}$) as sources of favorable alleles not already present in an elite hybrid (I$\sb1$ x I$\sb2$) is important. A non-reciprocal diallel of 4 maize (Zea mays L.) inbreds of Stiff Stalk Synthetic, 5 of Lancaster, and 5 of unrelated origin were evaluated for grain yield, grain dry matter, earliness of flowering, total lodging, and plant and ear height at two locations in 1984 and 1985. Inbreds B73 and Mo17 crossed to the remaining 12 inbreds, B73 x Mo17, their F$\sb2$'s, and the inbreds per se were evaluated at two locations in 1986. For the hybrids B73 x Mo17, B73 x B77, and B75 x N152 donor lines (I$\sb{\rm w}$) with low and high estimates of the relative number of favorable dominant alleles (μG) not present in the elite hybrid (I$\sb1$ x I$\sb2)$ were selected and random testcrosses from their F$\sb2$ generation were evaluated at two locations in 1986.

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

• Zanoni, Urs

Contributors dc:contributor

• Dudley, John W.

• Agriculture, Agronomy

Identifier

(UMI)AAI8815443

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/71650