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利用亲本品系间杂交,将优良配组的基因集中一处是任何作物改良项目的组成部分。Norden(1973)曾指出,通过引种选种进行改良的可能性已近于枯竭,进一步的进展唯有通过人工杂交来取得。
Taking advantage of the cross between parental lines, pooling the genes from the elite stocks is part of any crop improvement project. Norden (1973) pointed out that the possibility of improvement through the introduction of seed selection is almost exhausted, and further progress can only be made by artificial hybridization.