That sub-red mutant has better photosynthesis efficiency than normal green plant under strong light. This might be attributed to the fact that the anthocyanin can protect chloroplast from light stress and consequently enhance the photosynthesis efficiency.
对亚红株突变体光响应曲线测定表明在强光下比绿株有更好的光合作用效率，这可能是花青素在光合作用过程中起到了相应的光保护作用，抵御强光，使得叶绿体免受损伤。
参考来源 - 陆地棉亚红株突变体基因定位及光合生理特性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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