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首页> 外文期刊>Australian Journal of Crop Science >The influence of gibberellic acid on the chlorophyll fluorescence, protein content and PAL activity of wax apple (Syzygium samarangense var. jambu madu) fruits
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The influence of gibberellic acid on the chlorophyll fluorescence, protein content and PAL activity of wax apple (Syzygium samarangense var. jambu madu) fruits

机译：赤霉素对蜡果（Syzygium samarangense var。jambu madu）果实的叶绿素荧光，蛋白质含量和PAL活性的影响

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摘要

A study was carried out to investigate the effects of gibberellic acid on chlorophyll fluorescence, phenylalanine ammonia lyase (PAL) activity and anthocyanin biosynthesis in Syzygium samarangense var. jambu madu fruits. Selected horticultural parameters were monitored during the growth period from May 2014 to April 2015 using different concentrations of GA3 ranging from 20 to 100 mg L-1. Results revealed that 50 mg L-1 GA3 treatment increased chlorophyll content, soluble protein and produced the highest chlorophyll fluorescence and quantum yield. It was observed that 50 mg L-1 GA3 treatments increased the PAL activity and anthocyanin content of fruits significantly. Furthermore, a positive correlation (R2 = 0.69) between the PAL activity and anthocyanin biosynthesis was observed in treated fruit. With regard to fruit maturity, red ripen stage showed the highest PAL activity and anthocyanin content. From this study, it can be concluded that 50 mg L-1 GA3 once each week from the beginning of flower opening through fruit development, exhibited highest chlorophyll fluorescence and quantum yield, stimulated PAL activity and anthocyanin biosynthesis of the jambu air madu fruits under field conditions.
机译：进行了研究以赤霉素对Syzygium samarangense var中叶绿素荧光，苯丙氨酸氨裂合酶（PAL）活性和花色苷生物合成的影响。珍宝马杜水果。在2014年5月至2015年4月的生长期期间，使用20至100 mg L-1的不同浓度的GA3监测选定的园艺参数。结果表明，50 mg L-1 GA3处理可增加叶绿素含量，可溶性蛋白并产生最高的叶绿素荧光和量子产率。观察到50 mg L-1 GA3处理可显着提高果实的PAL活性和花色苷含量。此外，在处理过的水果中观察到PAL活性与花色苷生物合成之间存在正相关（R2 = 0.69）。关于果实的成熟度，红色成熟阶段显示出最高的PAL活性和花色苷含量。从这项研究中可以得出结论，从开花到果实发育，每周一次50 mg L-1 GA3表现出最大的叶绿素果实在田间下的叶绿素荧光和量子产率最高，刺激了PAL活性和花色苷生物合成。条件。

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