Genetic variation for selenium content in tall fescue

McQuinn, S.D. and Sleper, D.A. and Mayland, H.F. and Karuse, G.F. (1991) Genetic variation for selenium content in tall fescue. Crop Science. 31:617-620.

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Abstract

Selenium is an element necessary for good animal health. No information
is available on inheritance of Se concentration in tall fescue
(Festuca arundinacea Shreb.). Therefore, the purpose of this
investigation was to determine the nature of genetic variation of Se
concentration in tall fescue. To accomplish this objective, 15 parental
clones were randomly chosen from a broad-based population, and
their half-sib (HS) progenies were generated using a polycross mating
design. Selenium analysis was determined flourometrically by
digesting dried, ground herbage samples in 3:1 HNO3/HCIO4 . Significant
genetic variation was observed among HS families in the
fall for Se concentration. Heritability, calculated using parent-offspring
(PO) regression, gave estimates of 18% for summer and 68%
for the fall. Heritability and genetic gain estimates were maximized
in the fall, as compared with the summer, largely because of a large
environmental component. Genetic gain, expressed as a percentage
of the mean of parents, predicted an advance of 1 9 % for fall herbage.
Progress in selecting for improved concentrations of Se in the fall
in this population of tall fescue is likely.

Item Type:	Article
NWISRL Publication Number:	0737
Subjects:	Irrigated crops > Grass forage > Chemistry Mass Import - autoclassified (may be erroneous)
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:53
Last Modified:	09 Dec 2016 18:22
Item ID:	551
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/551