Effects of Salinity and Nitrate Nitrogen on Growth, Ion Accumulation, and Photosynthesis of Sugar Beet

被引：0
作者：
Liu, Yan [1 ]
Zhou, Jiachao [1 ]
Sui, Na [1 ]
Ding, Tonglou [1 ]
Zhang, Xiaodong [1 ]
Song, Jie [1 ]
Wang, Baoshan [1 ]
机构：
[1] Shandong Normal Univ, Coll Life Sci, Key Lab Plant Stress Res, Jinan 250014, Shandong, Peoples R China
来源：
ADVANCES IN ENVIRONMENTAL TECHNOLOGIES, PTS 1-6 | 2013年 / 726-731卷
关键词：
Sugar Beet; NaCl; NO3-; Ion Accumulation; Chlorophyll Content; Chlorophyll Fluorescence; Photosynthetic Characteristics; PHOTOSYSTEM-II; SALT TOLERANCE; NACL; POTASSIUM; NUTRITION; CHLORIDE; PLANTS; COTTON;
D O I：
10.4028/www.scientific.net/AMR.726-731.4371
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Effects of salinity and nitrate nitrogen (NO3--N) on growth, ion accumulation, chlorophyll content, chlorophyll fluorescence, and photosynthetic characteristics of sugar beet cultivar KWS3418 were investigated in a greenhouse experiment. Seedlings were exposed to 0 and 1% NaCl in 0.5, 5 or 10 mM NO3--N treatments for 25 days. The results showed that increasing NO3- supply improved shoot and root dry weights, decreased the a concentration in leaves and roots regardless of NaCl concentration. Higher NO3--N supply also increased concentration of chlorophyll, net photosynthetic rate (Pn), actual PSII efficiency (Phi(PSII)) in leaves and soluble sugar concentration in roots. The results indicate that increasing NO3- supply can help sugar beet to mediate ion homeostasis, to increase the ability of photosynthesis, and subsequently to increase the growth under high salinity. The interactive effects of salinity and nitrate availability can significantly increase soluble sugar in roots of sugar beet.
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收藏
页码：4371 / 4380
页数：10
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