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Internal CO 2 Concentration as a Selection Criterion for Storage Respiration Rate in Sugarbeet
Author(s) -
Campbell L. G.,
Seiler G. J.
Publication year - 1994
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.1994.tb00656.x
Subject(s) - respiration , biology , sucrose , selection (genetic algorithm) , respiration rate , germplasm , population , hybrid , horticulture , botany , food science , demography , artificial intelligence , sociology , computer science
Respiration is responsible for much of the sucrose loss that occurs during sugarbeet ( Beta vulgans L.) storage. Genotypes with reduced storage respiration rates would provide an efficient method for reducing sucrose losses. However, the current techniques for measuring storage respiration are not adapted easily to breeding programs. Internal CO 2 concentration has been recommended as an efficient method for measuring the respiration rate of individual sugar‐beet roots in storage. This study examined the effectiveness of internal CO 2 concentration as a selection criterion for reducing respiration rate of sugarbeet during storage. Lines resulting from four cycles of divergent selection for internal CO 2 concentration were evaluated along with commercial hybrids and low internal CO 2 germplasm lines. Selection was effective in shifting internal CO 2 concentration. Relative differences in internal CO 2 concentration were consistent throughout the 3‐year study. Neither the fourth‐cycle selections for low nor the fourth‐cycle selections for high internal CO 2 concentration were significantly different from the original population for evolved CO 2 . This lack of a close relationship between internal and evolved CO 2 indicated that internal CO 2 concentration is not an effective selection criterion in a breeding program.