不同光质补光对火龙果茎生理特性及开花结果的影响
为探究不同光质补光对火龙果(Hylocereus polyrhizus)茎生理特性的影响，该文采用红光、白光、蓝光 3 种不同光质对火龙果进行夜间补光，测定火龙果茎中可溶性糖、可溶性蛋白、叶绿素、线粒体蛋白、线粒体膜电位及细胞分裂素（CTK）、吲哚乙酸（IAA）、赤霉素（GA）三种内源激素的含量，并统计茎长、开花数、果实产量相关指标。结果表明：3种光质补光均可提高火龙果植株可溶性蛋白质含量，补白光效果最佳；3 种光质补光均可显著提高火龙果植株可溶性糖的含量，补蓝光效果最佳；补白光有利于叶绿素 a 和叶绿素 b的含量增加，补红光对其影响不显著，而补蓝光会降低其含量；补白光和蓝光均能显著降低CTK 含量，补白光和红光均能显著提高 IAA 含量，补红光和蓝光均能显著提高 GA 含量；补白光显著降低线粒体蛋白含量，3 种光质补光对线粒体膜电位均无明显影响；3 种光质补光对火龙茎的生长无显著影响，补红光和白光能显著提高开花率，补红光能显著提高果实产量。综合以上结果可得，补红光与白光对火龙果茎代谢产物、叶绿素、内源激素含量及开花数、果实产量有较明显的促进效果，该研究结果为光质调控技术促进火龙果植株的生长发育、开花结果提供借鉴。
o investigate the effects of different supplemental light on physiological characteristics of pitaya stems, red, white and blue light were used as supplemental light source at night. The contents of soluble sugar, soluble protein, chlorophyll, mitochondrial protein, mitochondrial membrane potential and three endogenous hormones (CTK, IAA, GA) were determined. The indicators of stem growth, flowering, fruit yield were counted. The results were as follows: Supplementing this three kinds of light could all increase the soluble protein content in pitaya stems, and the white light had the best effect; Supplementing this three kinds of light could all significantly increase soluble sugar content in pitaya stems, and the blue light had the best effect; Supplementing white light was beneficial to increase the content of chlorophyll a and b, and supplementing red light had no significant effect on it, while blue light would reduce its content; Supplementing white light and blue light could significantly reduce the CTK content, supplementing white and red light could significantly increase the IAA content, and supplementing red light and blue light could significantly increase the GA content; Supplementing white light could significantly reduce the mitochondrial protein content and the three kinds of supplement light had no obvious effect on the mitochondrial membrane potential; Supplementing the three kinds of light had no significant effect on the growth of pitaya stems, while supplementing red and white light could significantly increase the flower formation rate, and supplementing red light could significantly increase the fruit yield. Comprehensive analysis deemed that supplementing red light and white light had obvious promoting effect on the contents of metabolites, chlorophyll, endogenous hormones of pitaya stems, flower formation rate and fruit yield. The research results could provide a reference for a technology of light quality controlling to improve the growth and development pitaya plants.
蔡英健、汪财生、余若莹、谢佐沐、付美、俞超、郭斌
农业科学技术发展农艺学园艺
火龙果，光质，补光，茎，生理特性，开花结果
蔡英健,汪财生,余若莹,谢佐沐,付美,俞超,郭斌.不同光质补光对火龙果茎生理特性及开花结果的影响[EB/OL].(2021-04-13)[2025-08-03].https://chinaxiv.org/abs/202104.00074.点此复制
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