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The Combining Ability of Inbred Lines of Golden Bantam Sweet Corn 1
Author(s) -
Johnson I. J.,
Hayes H. K.
Publication year - 1936
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1936.00021962002800030008x
Subject(s) - agricultural experiment station , citation , library science , mathematics , horticulture , computer science , biology , agriculture , ecology
WHEN only a few inbred lines of corn are available the usual method of determining how they can be used most advantageously is to make all possible combinations between them and select for commercial production the single, three-way, or double crosses that prove the most satisfactory. When many inbred lines are available it has proved desirable to test their combining ability and discard those that give low-yielding crosses on the average. The first method of determining combining ability consisted of a series of crosses of each inbred with io or i2 inbred lines used as testers. In i932, Jenkins and Brunson~ pre~ented data to show that an openpollinated variety could be used as a tester to determine the relative combining ability of inbred lines. Significant and fairly high correlations were obtained between the mean yields of inbred lines in several single crosses and the average combining ability of these same lines in top crosses. This has led to the use of top crosses as a means of selecting inbred lines with satisfactory combining ability. The present study was made to determine the reliability of top crosses as a means of determining the combining ability of inbred lines of sweet corn. A study was made also of the relation between characters of inbred lines and their Pl top crosses.