Premium
Effect of Natural Selection on Performance of a Barley Population 1
Author(s) -
Rasmusson D. C.,
Beard B. H.,
Johnson F. K.
Publication year - 1967
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/cropsci1967.0011183x000700050042x
Subject(s) - biology , selection (genetic algorithm) , sowing , yield (engineering) , population , agronomy , natural population growth , hordeum vulgare , natural selection , grain yield , poaceae , zoology , demography , materials science , artificial intelligence , sociology , computer science , metallurgy
A barley composite population obtained by mixing seed of 6,000 entries from the barley world collection was grown under severe stress, imposed by late planting, in Minnesota for 6 years. During this time the composite was advanced using a random lot of seed from the previous year's harvest. Remmant seed from each year ultimately was planted in yield trials to ascertain the change, if any, in the yield potential of the composite. Yield of the population increased significantly indicating a substantial response to natural selection. The improvement amounted to 57% during the six years or an average of 9.5% for each year of natural selection.