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对杂种小麦与普通小麦(包括杂种小麦亲本)的比较研究表明:杂种小麦在顶部二叶的光合速率高值持续期、累积蒸腾量、叶片功能持续期以及光合有效叶面积上显著优于普通小麦,叶源量高出30.22％。杂种小麦籽粒中内源生长素(IAA)、玉米素(Z)及玉米素核苷(ZR)含量在发育各时期均显著高于普通小麦。但杂种小麦的叶鞘、茎干重下降率略低于普通小麦。以上可能是杂种小麦生物产量和籽粒产量显著高于普通小麦,而经济系数却接近或略低于普通小麦的原因。
The comparative study on hybrid wheat and common wheat (including hybrid wheat parents) showed that the hybrid wheat had significantly higher photosynthetic rate duration, cumulative transpiration, functional duration of leaves and photosynthetic active leaf area of top two leaves than that of common wheat , The amount of leaf source is higher than 30.22%. The content of IAA, Z and ZR in hybrid wheat was significantly higher than that of common wheat at all developmental stages. However, the decline rate of leaf sheath and stem weight of hybrid wheat was slightly lower than that of common wheat. The above may be the reason why the biological yield and grain yield of hybrid wheat are significantly higher than that of common wheat, while the economic coefficient is close to or slightly lower than that of common wheat.