Growth of rice plants under red light with or without supplemental blue light
Growth of rice plants under red light with or without supplemental blue light
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DOI：
10.1111/j.1747-0765.2006.00063.x
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发表时间：
2006-08-01
影响因子：
2
通讯作者：
Kurata, Kenji
中科院分区：
文献类型：
--
作者：
Ohashi-Kaneko, Keiko;Matsuda, Ryo;Kurata, Kenji
研究了蓝光补红光对水稻生长、形态和氮素利用的影响。CV. Sasanishiki和Nipponbare）进行了调查。植物在两种光质处理下生长，单独红光（R）或红光补充蓝光（RB;红光/蓝光光合光子通量密度[PPFD]比为4/1），PPFD为380 mol m（-2）s（-1）。RB条件下生长的两个品种的生物量生产高于R条件下生长的植物。这种生物量生产的增强是由净同化率（NAR）的增加引起的。较高的NAR与较高的叶片氮含量/叶面积在整个植物水平，这是伴随着较高的含量的光合作用的关键成分，包括Rubisco和叶绿素。在Sasanishiki，叶片的优先生物量投资和更宽更薄的叶片的扩张也有助于提高生物量生产。在日本晴中没有观察到这些叶片形态变化。生理特性的变化，包括叶片光合作用，和形态特征的变化，包括叶片发育，RB条件下的生物量生产的增强作出了贡献，虽然这些变化的程度不同的两个品种。
The effects of blue light supplementation to red light on growth, morphology and N utilization in rice plants (Oryza sativa L. cv. Sasanishiki and Nipponbare) were investigated. Plants were grown under two light quality treatments, red light alone (R) or red light supplemented with blue light (RB; red/blue-light photosynthetic photon flux density [PPFD] ratio was 4/1), at 380 mol m(-2) s(-1) PPFD. The biomass production of both cultivars grown under RB conditions was higher than that of plants grown under R conditions. This enhancement of biomass production was caused by an increase in the net assimilation rate (NAR). The higher NAR was associated with a higher leaf N content per leaf area at the whole-plant level, which was accompanied by higher contents of the key components of photosynthesis, including Rubisco and chlorophyll. In Sasanishiki, preferential biomass investment in leaf blades and expansion of wider and thinner leaves also contributed to the enhancement of biomass production. These morphological changes in the leaves were not observed in Nipponbare. Both the changes in physiological characteristics, including leaf photosynthesis, and the changes in morphological characteristics, including leaf development, contributed to the enhancement of biomass production under RB conditions, although the extent of these changes differed between the two cultivars.