New Zealand Journal of Agricultural Research abstracts
Adaptation to low fertility hill country in New Zealand of white clover lines
selected for differences in response to phosphorus
J. R. CARADUS
A. DUNN
AgResearch Grasslands
Private Bag 11008
Palmerston North, New Zealand
Abstract White clover breeding lines developed as high and
low P-responsive, in glasshouse selection trials, were compared, over three
years, with 17 other breeding lines and cultivars for growth in four
soil-fertility treatments under two defoliation treatments on a hill-country
farm. Differences between P-response groups were transitory and biologically
insignificant. Selection for differences in response to P in a controlled
environment was not successful in identifying white clover germplasm adapted to
low P hill-country soils. White clover breeding lines and cultivars that
achieved high growth over the 3-year duration of the trial had New Zealand
parentage and were all medium to small leaf types.
Keywords cultivars; low phosphorus tolerance; selection;
Trifolium repens; white clover
New Zealand Journal of Agricultural Research, 2000, Vol. 43: 63-69
0028-8233/00/4301-0630 $7.00/0 (c) The Royal Society of New Zealand
2000
PDF file of entire paper: medium quality (460K); (scanned from paper original: notes about this process)
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