It will clarify our thinking if we plant breeders realize that, up to now, there are only two effective ways to increase the yield potential of crops through breeding, i.e., morphological improvement and heterosis utilization. However, he potential is very limited by using morphological improvement alone and heterosis breeding will produce undesirable results if it does not combine with morphological improvement. Any other breeding approaches and methods including high technology like molecular breeding must be incorporated into good morphological characters and strong heterosis, otherwise there will be no actual contributions to yield increase.
It will clarify our thinking if we plant breeders realize that, up to now, there are only
two effective ways to increase the yield potential of crops through breeding, i.e., morphological improvement and heterosis utilization. However, he potential is very limited by using morphological improvement alone and heterosis breeding will produce undesirable results if it does not combine with morphological improvement. Any other breeding approaches and methods including high technology like molecular breeding must be incorporated into good morphological characters and strong heterosis, otherwise there will be no actual contributions to yield increase.