光质对马铃薯生长及叶绿素荧光参数的影响
Effects of Different LED Light Qualities on Growth and Chlorophyll Fluorescence Parameters in Planting Virus-Free Potato by Hydroponics System
DOI: 10.12677/HJAS.2018.812214, PDF,    科研立项经费支持
作者: 唐宇桥：西南大学附属中学，重庆；唐道彬*：西南大学农学与生物科技学院，重庆
关键词: 脱毒马铃薯；水培；LED；光质；叶绿素荧光；Virus-Free Potato； Hydroponic； LED； Light Quality； Chlorophyll Fluorescence
摘要: 研究不同光质LED的光源对水培脱毒马铃薯生长、光合色素含量及叶绿素荧光参数的影响。采用发光二极管(light emitting diode, LED)精量调制光质，以单色光(红光R、蓝光B)和红蓝组合光(7R1B, 3R1B, 1R1B, 1R3B, 1R7B)为光源，以白光作为对照，脱毒马铃薯费乌瑞它和鄂薯5号作为试验材料，研究不同光质LED光源对脱毒马铃薯植株生长发育、叶绿素荧光特性和结薯特性的影响。结果表明：在不同光质的作用下，脱毒马铃薯的生长发育存在差异。红光R能够明显提高植株株高和叶绿素含量；蓝光B处理可提高植株的株高、鲜重及干重、叶形指数、叶面积和叶绿素a/b值，以及ΦPSII和ETR，且蓝光促进植株衰老，可通过缩短植株生产周期，提高工业产量。红蓝组合光R1B7处理下的植株具有较高的株高、茎粗、干重及壮苗指数，且提高了ΦPSII、ETR和qP，产量也较高，但结薯数相对较少，蓝光有利于块茎的膨大，而不利于匍匐茎的大量产生，所以可通过前期提高红光比例增加匍匐茎的形成，而后期降低红/蓝光比值促进块茎的形成，从而提高产量。
Abstract: The differences of virus-free potato seedling growth, as well as variances of chlorophyll content and chlorophyll fluorescence parameters were studied. Red light, blue light, Red + Blue (R + B) light generated by light-emitting-diode, white light as control, were applied to study the influences of different LED light qualities such as W, R, B, 7R1B, 3R1B, 1R1B, 1R3B, 1R7B, on virus-free potato seedling leaves with Favorite and Eshu No. 5 as materials. The results showed that the different lighting quality treatments affected the growth and photosynthetic characteristics of potato seed-lings significantly in different ways. Obvious increase was observed about plant height and contents of chlorophyll in the red light treatment. It was showed that blue light treatment was beneficial to the growth of leaf area index, height, leaf area, chlorophyll a/b and dry plant weight, as well as ΦPSII, ETR. Moreover, it was also beneficial to the increase of tubers production and the acceleration of ripening time. Furthermore, it was concluded that 1R7B treatment showed its superiority with significant increase of plant height, stem diameter, seedling index, dry plant weight as well as ETR, ΦPSII and qP, but it cannot increase the number of tubers. In addition, blue light can promote the enlargement of tubers. So pretreatment increase in red light can lead to the formation of a large number of stolons, post-treatment increase in blue light can promote the enlargement of tubers and stolons tuber, meantime, thus increasing the yield of tubers.
文章引用：唐宇桥, 唐道彬. 光质对马铃薯生长及叶绿素荧光参数的影响[J]. 农业科学, 2018, 8(12): 1461-1474. https://doi.org/10.12677/HJAS.2018.812214

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