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Recurrent Selection for Rind Thickness in Maize and its Relationship With Yield, Lodging, and Other Plant Characteristics 1
Author(s) -
Davis Stephen M.,
Crane Paul L.
Publication year - 1976
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/cropsci1976.0011183x001600010013x
Subject(s) - biology , selection (genetic algorithm) , zea mays , grain yield , poaceae , agronomy , population , yield (engineering) , horticulture , zoology , demography , materials science , artificial intelligence , sociology , computer science , metallurgy
This study attempted to evaluate the effectiveness of recurrent selection in increasing the stalk rind thickness in a synthetic population of maize ( Zea mays L.) and determine the associated response of lodging and several other characters to selection for rind thickness. Three cycles with a selection intensity of 10% and effective populations of 883, 891, and 1054 were completed on an individual plant basis. The rind thickness of all cycles were not compared in a single year. Lodging decreased from 24.2 to 20.7% after two cycles of selection in topcrosses of the selected populations with five single‐crosses and from 25.7 to 19.1% after three cycles of selection in the populations per se. Grain yield decreased with selection for rind thickness from 64.3 to 50.9 quintals/ha in the populations per se and from 67.9 to 64.7 quintals/ha in the topcrosses. No substantial changes occurred in grain moisture at harvest, percent stand, ear height, nor plant height.