Supplementary Far-Red Light Did Not Affect Tomato Plant Growth or Yield under Mediterranean Greenhouse Conditions

被引:12
|
作者
Palmitessa, Onofrio Davide [1 ]
Leoni, Beniamino [1 ]
Montesano, Francesco Fabiano [2 ]
Serio, Francesco [2 ]
Signore, Angelo [1 ]
Santamaria, Pietro [1 ]
机构
[1] Univ Bari Aldo Moro, Dept Agr & Environm Sci, Via Amendola 165-a, I-70126 Bari, Italy
[2] Natl Res Council Italy, Inst Sci Food Prod, I-70126 Bari, Italy
来源
AGRONOMY-BASEL | 2020年 / 10卷 / 12期
关键词
light emitting diodes (LED); interlighting; gas exchange; water use efficiency (WUE); EMITTING-DIODES; LEAF PHOTOSYNTHESIS; QUALITY; MORPHOLOGY; RESPONSES; SPECTRUM; CANOPY; BLUE; L;
D O I
10.3390/agronomy10121849
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
In the Mediterranean region, tomato plants are often cultivated in two short cycles per year to avoid the heat of summer and the low solar radiation of winter. Supplementary light (SL) makes it possible to cultivate during the dark season. In this experiment, a tomato F1 hybrid cultivar DRW7723 was cultivated in a greenhouse for a fall-winter cycle. After transplant, light emitting diode (LED) interlighting, with two light spectra (red + blue vs. red + blue + far-red) was applied as SL. Plant growth, yield, gas exchange, nutrient solution (NS) consumption, and fruit quality were analyzed. In general, the effects of adding far-red radiation were not visible on the parameters analyzed, although the yield was 27% higher in plants grown with SL than those grown without. Tomatoes had the same average fresh weight between SL treatments, but the plants grown with SL produced 16% more fruits than control. Fruit quality, gas exchange and NS uptake were not influenced by the addition of far-red light. Interlighting is, therefore, a valid technique to increase fruit production in winter but at our latitude the effects of adding far-red radiation are mitigated by available sunlight.
引用
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页数:15
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