不同灌溉方式下萝卜叶片光合速率和Rubisco的变化

Photosynthetic Rate and Rubisco of Leaves of Raphanus Sativus L. under Different Irrigation

本文研究了不同灌溉方式下秋冬萝卜(RaphanussativusL.)叶片的光合速率以及Rubisco(核酮糖 1,5 二磷酸加氧酶 羧化酶)含量与活性的变化.结果表明:在萝卜的生长过程中,滴灌(DI)处理的萝卜叶片的光合速率始终高于漫灌(FI)处理的萝卜,其叶片Rubisco的初始活力、总活力、Rubisco含量与光合速率均显著相关.此外,不同灌溉方式下萝卜叶片的Rubisco存在差异(F=0 400416,p>0 05);Rubisco含量与活力共同限制叶片光合速率,进而影响到萝卜的产量与质量.

The effects of different irrigations on photosynthesis rate and rubisco of radish leaves were studied in this paper. The results showed that the photosynthesis rate of the radish leaves with drip irrigation treatment was higher than that with flooding irrigation treatment during the growth of the radish. The photosynthesis rate was very significantly correlative to initial Rubisco activity, total Rubisco activity and Rubisco content. There was an obvious difference （F = 0.400416, p 〉 0.05） on Rubisco of the radish leaves with different treatment. The Rubisco content was not the only influencing factors but together with the Rubisco activity, to the photosynthesis rate.