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Associations Between Chromosomal Knobs of Zea mays L. and Agronomic Performance 1
Author(s) -
Moll R. H.,
Hanson W. D.,
Levings C. S.,
Ohta Yasuo
Publication year - 1972
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/cropsci1972.0011183x001200050011x
Subject(s) - biology , zea mays , grain yield , chromosome , inbred strain , constitution , genetics , poaceae , botany , agronomy , gene , political science , law
Four polymorphic chromosome knobs in the open‐ pollinated variety of Zea mays L., ‘Jarvis,’ were found to be associated with effects related to plant vigor. Random inbred lines of the variety were categorized for knob constitution at each of the four knob sites. Inbreds of similar knob constitution were intermated to produce subpopulations with known knob constitution. The subpopulations were evaluated for four quantitative traits in replicated trials. Heteromorphic knob constitution was associated with greater ear height and plant height at four knob sites, and with higher yield of grain at three of the knob sites.