
TY  - JOUR
A1  - Clements, RJ 
T1  - Selection for crude protein content in <I>Phalaris tuberosa</I> L.

I. Response to selection and preliminary studies on correlated responses
JF  - Australian Journal of Agricultural Research
JO  - Aust. J.  Agric. Res.
Y1  - 1969
VL  - 20
IS  - 4
SP  - 643
EP  - 652
KW  - 
UR  - https://doi.org/10.1071/AR9690643 
N2  - In a highly variable breeding population of P. tuberosa, marked responses were obtained to three generations of selection for high and low crude protein concentration (percentage nitrogen x 6.25) in whole tillers at heading. Total response was similar in each direction, and realized heritability estimates were h2 &#61; 0.25 and h2 &#61; 0.20 in the high and low directions respectively. The responses were accompanied by positively correlated changes in in vitro digestibility and in characters commonly used as indicators of nutritive value of herbage. However, there were large negatively correlated changes in seedling vigour, relative growth rates, and other morphological and physiological characters. The implications of the results for pasture plant breeding are discussed. 
ER  -

