Genetic improvement of pre-anthesis growth of turnip rape (Brassica rapa L.) at low temperature

0ion for rapid seedling emergence at 4°C had no effect on plant growth. Pollen selection at low temperature improved subsequent plant growth at lowtemperature. The dry weight ratio of plants grown at 13/4°C to that at 18/13equent plant growth at lowtemperature. The dry weight ratio of plants grown at 13/4/night) at 26 days after emergence, whereas selection for rapid seedling emergence at 4°C had no effect on plant growth. Pollen selection at low temperature improved subsequent plant growth at lowtemperature. The dry weight ratio of plants grown at 13/4°C to that at 18/13°C was higher in progenies derived from fertilisation at 10/2rature. The dry weight ratio of plants grown at 13/4/night) at 26 days after emergence, whereas selection for rapid seedling emergence at 4°C had no effect on plant growth. Pollen selection at low temperature improved subsequent plant growth at lowtemperature. The dry weight ratio of plants grown at 13/4°C to that at 18/13equent plant growth at lowtemperature. The dry weight ratio of plants grown at 13/4/night) at 26 days after emergence, whereas selection for rapid seedling emergence at 4°C had no effect on plant growth. Pollen selection at low temperature improved subsequent plant growth at lowtemperature. The dry weight ratio of plants grown at 13/4°C to that at 18/13°C was higher in progenies derived from fertilisation at 10/2°C than those from 18/13days after emergence, whereas selection for rapid seedling emergence at 4°C had no effect on plant growth. Pollen selection at low temperature improved subsequent plant growth at lowtemperature. The dry weight ratio of plants grown at 13/4°C to that at 18/13equent plant growth at lowtemperature. The dry weight ratio of plants grown at 13/4/night) at 26 days after emergence, whereas selection for rapid seedling emergence at 4°C had no effect on plant growth. Pollen selection at low temperature improved subsequent plant growth at lowtemperature. The dry weight ratio of plants grown at 13/4°C to that at 18/13°C was higher in progenies derived from fertilisation at 10/2rature. The dry weight ratio of plants grown at 13/4/night) at 26 days after emergence, whereas selection for rapid seedling emergence at 4°C had no effect on plant growth. Pollen selection at low temperature improved subsequent plant growth at lowtemperature. The dry weight ratio of plants grown at 13/4°C to that at 18/13equent plant growth at lowtemperature. The dry weight ratio of plants grown at 13/4/night) at 26 days after emergence, whereas selection for rapid seedling emergence at 4°C had no effect on plant growth. Pollen selection at low temperature improved subsequent plant growth at lowtemperature. The dry weight ratio of plants grown at 13/4°C to that at 18/13°C was higher in progenies derived from fertilisation at 10/2°C than those from 18/13°C fertilisation. The ability to use pollen selection in combination with pedigree selection for low potassium leakage should increase genetic gain of plant dry weight at low temperature in segregating populations.