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Lack of Relationship between Relative Maturity and Genome Size in Hybrid Maize
Author(s) -
McMurphy Lisa M.,
Rayburn A. Lane
Publication year - 1991
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1991.0011183x003100010016x
Subject(s) - biology , genome size , hybrid , genome , adaptation (eye) , maturity (psychological) , zea mays , evolutionary biology , genetics , agronomy , gene , psychology , developmental psychology , neuroscience
Correlations between genome size and area of geographic adaptation have been reported in maize ( Zea mays L.). Such correlations have been suggested to occur due to lower genome sizes being more favorable where shorter growing seasons exist. The objective of this study was to determine if genome size and relative maturity are correlated in hybrid maize. Thirty hybrids, obtained from Pioneer Hi‐Bred International, Inc. (Johnson, IA), were analyzed. Genome size determinations were made using flow cytometric techniques. No correlation between genome size and relative maturity was observed. Since the area of adaptation of these hybrids encompasses a wide range of latitudes, there appears to be no correlation between genome size and latitude as well. The lack of correlations among these characters may result from the breeding structure of hybrid maize.