Historical Trends in Sweet Corn Plant Density Tolerance Using Era Hybrids (1930-2010s).

ABSTRACT: Over the last six decades, steady improvement in plant density tolerance (PDT) has been one of the largest contributors to genetic yield gain in field corn. While recent research indicates that PDT in modern sweet corn hybrids could be exploited to improve yield, historical changes in PDT in sweet corn are unknown. The objectives of this study were to: (a) quantify the extent to which PDT has changed since introduction of hybrid sweet corn and (b) determine the extent to which changes over time in PDT are associated with plant morpho-physiological and ear traits. An era panel was assembled by recreating 15 sugary1 sweet corn hybrids that were widely used at one time in the United States, representing hybrids since the 1930s. Era hybrids were evaluated in field experiments in a rando

SUBMITTER: Dhaliwal DS 

PROVIDER: S-EPMC8492913 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature