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不同辣椒品系果实发育过程中糖含量和蔗糖代谢酶活性的变化

DOI: 10.7668/hbnxb.2007.S1.021, PP. 82-85

Keywords: 辣椒,果实,糖含量,蔗糖代谢酶

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Abstract:

研究了一个甜椒品系405和一个辣椒品系伏地尖果实在生育期内主要糖含量和蔗糖代谢关键酶活性的变化。结果表明:在绿熟期和转色期甜椒品系405的可溶性总糖、蔗糖含量都明显高于辣椒品系伏地尖,绿熟期甜椒品系405的可溶性总糖含量为213.3mg/g,而辣椒品系伏地尖则为97.6mg/g,但红熟期两者相差不大;与辣椒品系相比甜椒品系蔗糖和淀粉含量在绿熟期后有一个升高又降低的过程;两品系蔗糖代谢关键酶活性变化趋势差异不大,酸性转化酶与中性转化酶活性在果实快速生长期和成熟期较高,而在绿熟期较低;蔗糖磷酸合成酶活性在绿熟期较高,而在快速生长期和成熟期较低。虽然甜椒品系与辣椒品系之间糖含量存在显著差异,但两者蔗糖代谢酶活性差异并不明显,推测是由于对蔗糖利用的不同引起的。

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