Abstract：Taking‘ Huawang’ and‘ Wuyueman’ cultivars under sterile hydroponic conditions as
test material，this paper studies the effects of organic nitrogen glycine concentration on photosynthetic
physiology of pakchoi〔Brassica campestirs L. spp. chinensis（L.）Makino var. communis Tsen et
Lee〕. The pakchoi photosynthetic responses to glycine concentration were evaluated by fresh weight，
chlorophyll content，net photosynthetic rate and chlorophyll fluorescence，with 4 concentration
gradients（2.5，5.0，10.0，20.0 mmol·L-1）set up and non-nitrogen as the contrast. The results
showed that fresh weight and leaf photosynthetic pigment contents increased at 0-5 mmol·L-1，but then
decreased over this range. The relatively higher net photosynthetic rate of‘ Huawang’ was observed at
2.5-10.0 mmol·L-1，while that of‘ Wuyueman’ was at 2.5 mmol·L-1．No significant differences of
chlorophyll fluorescence were observed among 4 glycine gradients．Compared to non-nitrogen contrast，
‘Huawang’showed higher Fv/Fm，ΦPSⅡ，qP and lower Fo at every treatment，indicating a higher photochemical efficiency than‘ Wuyueman’.
杨丹妮, 王小丽, 黄丹枫. 有机态氮甘氨酸浓度对水培普通白菜光合系统和生长的影响[J]. 中国蔬菜, 2013, 1(16): 55-.
YANG Dan-Ni, WANG Xiao-Li, HUANG Dan-Feng. Effects of Organic Nitrogen Glycine Concentration on Photosynthesis System
and Growth of Hydroponic Pakchoi. , 2013, 1(16): 55-.
