Breeding for Resistance to the Sugarbeet Root Maggot

Theurer, J.C. and Blickenstaff, C.C. and Mahrt, G.G. and Doney, Devon L. (1982) Breeding for Resistance to the Sugarbeet Root Maggot. Crop Science. 22:641-645.

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Abstract

Thirty-six genetically diverse sugarbeet (Beta vulgaris L.) lines
were evaluated to determine their potential resistance to the sugarbeet
root maggot, Tetanops myopaeformis Roder. Significant and relatively
consistent differences in maggot damage were noted over 3
years. Damage ratings of F₁ crosses of resistant x susceptible lines
tended to be intermediate between those of the parents. Selection
for high- and low-maggot damage showed a linear trend in increasing
and decreasing maggot damage, respectively. The average
decline in the low-damage selection was approximately 5% per
cycle. After five cycles of selection, there was no change in the rate
of decline, indicating that further selection progress can be made.
A greenhouse test confirmed field designations of resistant and susceptible
genotypes. A low-damage inbred had lower maggot survival,
smaller maggot weight, lower damage ratings, and greater
root weight than a susceptible line.

Item Type:	Article
NWISRL Publication Number:	0491
Subjects:	Irrigated crops > Sugarbeet Mass Import - autoclassified (may be erroneous)
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:52
Last Modified:	19 Jan 2017 22:37
Item ID:	389
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/389