Premium
The Relationship Between F 2 and Selected F 3 Progenies in Cotton ( Gossypium hirsutum L.) 1
Author(s) -
Meredith William R.,
Bridge R. R.
Publication year - 1973
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/cropsci1973.0011183x001300030019x
Subject(s) - lint , hybrid , gossypium hirsutum , yield (engineering) , fiber , biology , gossypium , fiber crop , mathematics , horticulture , agronomy , materials science , composite material
Yield, components of yield, and fiber determinations of five parental lines of cotton ( Gossypium hirsutum L.) and their 10 F 2 hybrids were made at Stoneville, Mississippi in 1968. These results were then related to the 1969 F 3 performance at the same location of eight random, eight high yield, and eight high strength selections from each cross. The linear correlation coefficient for the F 2 and mean F 3 , yield was 48 and not significant. The F 2 hybrids, therefore, gave little information regarding which cross to use when selecting for lint yield. However, high correlations between the F 2 and F 3 for lint percent, seed index, and fiber length, strength, and elongation were detected. The performance of F 2 was a good indication of these traits. Differences in yield, lint percent, seed index, fiber length, and fiber strength among the three selection types were observed. The yield selections produced 5.7% more lint than the random and strength selections. However, the increased yield was partially at the expense of fiber properties. The average length and strength of the fiber quality selections were slightly greater (1.0%) than the random entries. There was no significant difference in yield between the random and high strength selections.