Changes in grain size and grain storage protein of rice (Oryza Sativa L.) in response to elevated UV-B radiation under outdoor conditions.
Changes in grain size and grain storage protein of rice (Oryza Sativa L.) in response to elevated UV-B radiation under outdoor conditions.
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DOI：
10.1269/jrr.46.143
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发表时间：
2005-06
影响因子：
2
通讯作者：
J. Hidema;Wu Zhang;Mitsuru Yamamoto;Tadashi Sato;T. Kumagai
中科院分区：
文献类型：
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作者：
J. Hidema;Wu Zhang;Mitsuru Yamamoto;Tadashi Sato;T. Kumagai
水稻生长发育、籽粒大小和籽粒贮藏蛋白含量的变异1999年、2001年和2002年，在日本宫城县的一个凉爽的水稻种植区，对阳光下UV-B辐射的升高进行了检测。2001年和2002年，UV-B辐射增强显著降低了小麦的分蘖数、干重、穗数、产量和籽粒大小。UV-B辐射升高对各生长参数降低的影响随着两年成熟期日较低温度的升高而大大增强。相反，2001和2002年UV-B辐射增强后，籽粒全氮含量和籽粒贮藏蛋白含量显著增加。在籽粒贮藏蛋白中，谷蛋白含量显著增加，而清蛋白、球蛋白和醇溶蛋白含量增加不明显。由此可见，UV-B辐射增强不仅对水稻籽粒大小有明显影响，而且对籽粒贮藏蛋白也有明显影响。
Variation in growth, grain size and grain storage protein content of rice (Oryza sativa L.) in response to elevated UV-B radiation under sunlight was examined in a cool rice-growing region of Miyagi Prefecture, Japan, in 1999, 2001 and 2002. Tiller number, dry mass, panicle number, grain yield and grain size significantly decreased under elevated UV-B radiation in 2001 and 2002. The effects of elevated UV-B radiation on the reduction of each growth parameter were greatly enhanced by daily lower temperature during the ripening stage in those two years. On the contrary, total grain nitrogen content and grain storage protein content significantly increased under elevated UV-B radiation in 2001 and 2002. Among grain storage proteins, glutelin content significantly increased but albumin-globulin and prolamin contents did not. It was thus evident that not only grain size but also grain storage protein of rice was markedly influenced due to elevated UV-B radiation.