Safflower yield, chlorophyll content, photosynthesis, and water use efficiency response to nitrogen fertilization under rainfed conditions

被引:229
作者
Dordas, Christos A. [1 ]
Sioulas, Christos [1 ]
机构
[1] Aristotle Univ Thessaloniki, Fac Agr, Agron Lab, Thessaloniki 54124, Greece
关键词
safflower; assimilation rate; nitrogen; yield components;
D O I
10.1016/j.indcrop.2007.07.020
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Safflower (Carthamus tinctorius L.) is a deep-rooted crop which can tolerate water stress and can be grown in rotation with other crop species. Nitrogen is very important for the growth and yield of safflower, however, the effect of N level on chlorophyll content, assimilation rate, transpiration rate, stomatal conductance, substornatal CO2 concentration, and water use efficiency (WUE) have not been determined. A 2-year field study was conducted with the objective to determine the effect of N fertilization on yield, yield components, chlorophyll content, photosynthetic characteristics, and WUE of safflower grown under rainfed conditions. Three rates of N were used (0, 100, and 200 kg N ha(-1)) and two hybrids (CW9048 and CW9050). N fertilization increased seed yield by an average of 19%, the seed weight per plant by 60%, the seed weight per head by 18%, the number of heads per plant by 32%, and the number of seeds per plant by 41% compared with the control. N level also affected chlorophyll content, N concentration at anthesis, protein, and oil yield. N application increased assimilation rate by an average of 51%, stomatal conductance of water vapour by an average of 27%, and WUE by an average of 60% over the 2 years of the study when compared to the control. The present study indicates that N fertilization can affect yield, yield components, photosynthetic efficiency, and physiology of safflower under rainfed conditions. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:75 / 85
页数:11
相关论文
共 42 条
[1]   EFFECTS OF IRRIGATION REGIMES, PLANTING DATES, NITROGEN LEVELS, AND ROW SPACING ON SAFFLOWER CULTIVARS [J].
ABEL, GH .
AGRONOMY JOURNAL, 1976, 68 (03) :448-451
[2]  
[Anonymous], 1995, MINERAL NUTR HIGHER
[3]   Response of safflower (Carthamus tinctorius L.) to residual soil N following cotton (Gossypium spp.) in rotation in the San Joaquin Valley of California [J].
Bassil, ES ;
Kaffka, SR ;
Hutmacher, RA .
JOURNAL OF AGRICULTURAL SCIENCE, 2002, 138 :395-402
[4]  
Bremner J.M., 1996, CHEM METHODS, V3rd, P1085, DOI DOI 10.2134/AGRONMONOGR9.2.C32
[5]   What are the effects of nitrogen deficiency on growth components of lettuce? [J].
Broadley, MR ;
Escobar-Gutiérrez, AJ ;
Burns, A ;
Burns, IG .
NEW PHYTOLOGIST, 2000, 147 (03) :519-526
[6]   Effect of nitrogen supply on growth and photosynthesis of sunflower plants grown in the greenhouse [J].
Cechin, I ;
Fumis, TD .
PLANT SCIENCE, 2004, 166 (05) :1379-1385
[7]   The effect of nitrogen deficiency on leaf gas exchange and chlorophyll fluorescence parameters in sunflower [J].
Ciompi, S ;
Gentili, E ;
Guidi, L ;
Soldatini, GF .
PLANT SCIENCE, 1996, 118 (02) :177-184
[8]  
Craswell E. T., 1984, Advances in Plant Nutrition, V1, P1
[9]   Gas exchange acclimation to elevated CO2 in upper-sunlit and lower-shaded canopy leaves in relation to nitrogen acquisition and partitioning in wheat grown in field chambers [J].
Del Pozo, Alejandro ;
Perez, Pilar ;
Gutierrez, Diego ;
Alonso, Aitor ;
Morcuende, Rosa ;
Martinez-Carrasco, Rafael .
ENVIRONMENTAL AND EXPERIMENTAL BOTANY, 2007, 59 (03) :371-380
[10]   Composted and noncomposted manure application to conventional and no-tillage systems: Corn yield and nitrogen uptake [J].
Eghball, B ;
Power, JF .
AGRONOMY JOURNAL, 1999, 91 (05) :819-825