O对埃及萝卜品种（萝卜属萝卜种Baladey品种）和芜菁品种（芜菁属芜菁种Sultani品种）气孔行为的影响。

Effects of O on the stomatal behaviour of Egyptian varieties of radish (Raphanus sativus L. cv. Baladey) and turnip (Brassica rapa L. cv. Sultani).

作者信息

Hassan I A, Ashmore M R, Bell J N B

机构信息

Department of Biology, Imperial College at Silwood Park, Ascot, Berks SL5 7PY, UK.

出版信息

New Phytol. 1994 Oct;128(2):243-249. doi: 10.1111/j.1469-8137.1994.tb04008.x.

DOI:10.1111/j.1469-8137.1994.tb04008.x

PMID:33874364

Abstract

The effects of O (80 nl 1 ) on the photosynthetic rate (A) and stormatal conductance (g) of Egyptian varieties of radish (Raphanus sativus L. ev. Baladey) and turnip (Brassica rapa L. ev. Sultani) were examined. Exposure to O decreased A in both species, while gs was increased in radish and decreased in turnip. The effect of different concentrations of O , (50, 100, 150 nl l on radish was examined and it was found that A decreased, while g, increased, with increasing concentrations of O . Scanning electron microscopy (SEM) of fumigated leaves showed that the increase in g in radish resulted from the collapse of epidermal cells. Counts of the percentage of stomata which were fully open demonstrated that 80 nl 1 O caused an increase of 18% in radish and a decrease of 14% in turnip. The proportion of opened stomata was found to increase with increasing O concentration in radish.

摘要

研究了O（80 nl⁻¹）对埃及萝卜品种（Raphanus sativus L. ev. Baladey）和芜菁品种（Brassica rapa L. ev. Sultani）光合速率（A）和气孔导度（g）的影响。暴露于O会降低两个物种的A，而萝卜的gs增加，芜菁的gs降低。研究了不同浓度的O（50、100、150 nl⁻¹）对萝卜的影响，发现随着O浓度的增加，A降低，而gs增加。对熏蒸叶片的扫描电子显微镜（SEM）观察表明，萝卜中gs的增加是由于表皮细胞的塌陷。对完全开放气孔百分比的计数表明，80 nl⁻¹的O使萝卜中开放气孔增加了18%，芜菁中减少了14%。发现萝卜中开放气孔的比例随O浓度的增加而增加。