Benedict C R, Kohel R J
Plant Physiologist and Geneticist, Crops Research Division, Agricultural Research Service, United States Department of Agriculture and Texas A&M University, College Station, Texas 77843.
Plant Physiol. 1968 Oct;43(10):1611-6. doi: 10.1104/pp.43.10.1611.
The virescent cotton (Gossypium hirsutum) mutant described here differs from normal cultivated cotton by a single mutation in the nucleus. The mutant exhibits nuclear control of chlorophyll and carotenoid development. Young leaves are distinctly yellow and become green with age. There is no unusual photometabolism of (14)CO(2) or (14)C-acetate in this mutant. It is probable that the nuclear virescent mutation is in a locus concerned with making structural units. The yellow leaves do show a high photosynthetic capacity on a chlorophyll basis. At saturating light intensity the rate of CO(2) fixation is 8 fold higher than the green control leaves. Thus, impaired pigment synthesis which could be lethal is offset by a high photosynthetic capacity in the virescent leaves.
本文所述的淡绿棉（陆地棉）突变体与正常栽培棉的区别在于细胞核中的一个单一突变。该突变体表现出对叶绿素和类胡萝卜素发育的核控制。幼叶明显发黄，随着年龄增长会变绿。该突变体中不存在（14）CO（2）或（14）C - 乙酸盐的异常光代谢。核淡绿突变很可能位于一个与制造结构单元有关的基因座上。黄叶在叶绿素基础上确实表现出较高的光合能力。在饱和光强下，二氧化碳固定速率比绿色对照叶高8倍。因此，可能致命的色素合成受损被淡绿叶中的高光合能力所抵消。
