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Selection for Increased Seed Weight in Kleingrass 1
Author(s) -
Hussey M. A.,
Holt E. C.
Publication year - 1986
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/cropsci1986.0011183x002600060017x
Subject(s) - biology , selection (genetic algorithm) , heritability , panicum , seedling , population , zoology , body weight , botany , agronomy , horticulture , demography , genetics , artificial intelligence , sociology , computer science , endocrinology
Selection for increased seed weight was investigated as a potential method for improving seedling vigor and stand establishment characteristic of kleingrass ( Panicum coloratum L.). Three cycles of mass selection for increased seed weight were conducted. Selection resulted in a total gain of 53.3% of the mean seed weight of the base population with gains of 27.1,1.8, and 18.5% in Cycles 1 and 2, and 3, respectively. The increased seed weight for Cycles 1 and 2 was attributed to the elimination of light seed weight classes, while increased seed weight in Cycle 3 was due to both the elimination of light seed weight classes as well as to an increase in maximum seed weight. Broad sense heritability estimates declined with selection from 73.2% in Cycle 0 to 41.7% in Cycle 3.