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众所周知,由于杂合性的缓冲作用,高度杂合的玉米三交种和双交种很少因环境影响而发生变化。如果能预测基因型对环境条件的反应程度,那么或许能拟定和预先选择所研究性状具有一定可塑性和稳定性的基因型。这对育种家力求使性状指标达到最适值大有帮助。
It is well-known that highly heterozygous maize crosses and double crosses rarely change due to environmental influences due to the buffering effect of heterozygosity. If one can predict the extent to which genotypes respond to environmental conditions, then it may be possible to develop and pre-select the genotypes for which the trait was of some plasticity and stability. This is a great help to breeders seeking to achieve the most appropriate trait index.