论文部分内容阅读
研究了CO_2倍增对大豆(Glycine max L.)Bragg(野生型)及其不同单基因突变品系Nts 382(超结瘤突变体)和Nod 49(不结瘤突变体)某些光合特性的影响。结果表明,CO_2倍增能提高Bragg、Nts 382和Nod 49的叶绿素(Chl)和类胡萝卜素(Car)的含量,但不同品系提高的幅度有所不同。荧光诱导动力学测定结果表明,CO_2倍增均能提高其PSⅡ活性、PSⅡ原初光能转化效率和光合作用潜在量子转化效率。CO_2倍增更有利于提高Nts 382的荧光光化学猝灭系数(qp)和PSⅡ总的光化学量子产量,以及较大幅度地降低荧光非光化学猝灭系数(qN),有助于把所捕获的光能用于进行光合作用。这可能与Nts 382是超结瘤突变体,比Bragg和Nod 49能更充分地利用空气中的氮素有关。
The effects of CO2 multiplication on some photosynthetic characteristics of soybean (Glycine max L.) Bragg (wild type) and its different monogenic mutants Nts 382 (super-nodule mutant) and Nod 49 (non-nodulated mutant) were studied. The results showed that CO 2 doubling increased the contents of Chl and Carotenoids in Bragg, Nts 382 and Nod 49, but the amplitudes of different cultivars were different. Fluorescence-induced kinetic assay showed that doubled CO_2 increased PSⅡ activity, PSⅡ primary light energy conversion efficiency and potential quantum efficiency of photosynthesis. CO_2 doubling is more conducive to improve the fluorescence photochemical quenching coefficient (qp) and PSⅡ total photochemical quantum yield of Nts 382, and significantly reduce the fluorescence non-photochemical quenching coefficient (qN), and help to capture the light energy For photosynthesis. This may be related to the Nts 382, a super-nodule mutant that is more fully utilized by nitrogen in the air than Bragg and Nod 49.