Cell cycle parameters and sweet corn emergence and seedling vigor

Sweet corn genotypes containing the shrunken2 (sh2) endosperm mutation are associated with reduced emergence and poor seedling vigor. Shrunken2 genotypes with known differences for field emergence and vigor were used to investigate the contribution of seedling cell division to emergence and seedling growth. Variation among genotypes was observed for all of the cell division cycle phases which include G1, S, and G2. The S phase, when cells are undergoing DNA replication, showed the closest association to seedling growth. Inbred lines homozygous for starchy (Su1) endosperm displayed a significantly higher proportion of nuclei in the S phase than the same inbred homozygous for the sh2 endosperm mutation. Among all the genotypes tested, the proportion of nuclei in the S phase was positively correlated with field emergence and seedling vigor.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Crop Sciences

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Meyer, Annette Carol

Contributors dc:contributor

• Juvik, John A.

• Agriculture, Agronomy
• Biology, Cell

Statement dc:rights

• Copyright 1995 Meyer, Annette Carol

Language dc:language

eng

Identifier

AAI9522151
(UMI)AAI9522151

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/21881