摘要
研究了长期(240 d)增施CO2(800±50)μmol·mol-1和大气CO2浓度约400μmol·mol-1(对照)对蝴蝶兰‘内山姑娘’净CO2吸收速率、生长和开花的影响。结果表明:蝴蝶兰属CAM植物类型,叶片净CO2吸收速率在22:00左右达到最大值,可滴定酸的积累在6:00左右达到顶峰。增施CO2显著提高蝴蝶兰夜间的净CO2吸收速率,并达到对照的两倍,可滴定酸的积累比对照增加44%。蝴蝶兰生物量的积累在增施CO2条件下也显著增加,植株干样和鲜样质量分别增加31%和28%。此外,增施CO2使蝴蝶兰的花期提前了5.4 d,提高了蝴蝶兰的产量和花部品质,其中花朵数比对照增加了66%。
Effects of long-term elevated CO2 on net CO2 uptake, growth and flowering of Phalaenopsis‘Neishan Guniang'were studied under elevated CO2(800 ± 50)μmol · mol^-1 and ambient CO2 concentration(approximately 400 μmol · mol^-1)for 240 d. The results showed that Phalaenopsis was a CAM orchid with the net CO2 uptake rate and the contents of titratable acidity reached the maximum at 22:00 and 6:00,respectively. Elevated CO2 significantly increased the net CO2 uptake rate in Phalaenopsis leaves,which was almost arrived two-fold comparison of in the control,and the content of titratable acidity was increased 44% by CO2 elevated. Elevated CO2 resulted in the increase of the accumulation of biomass which increased by 31% in dry weight and 28% in fresh weight. In addition,elevated CO2 not only advanced the flowering time by 5.4 d in Phalaenopsis,but also increased flower quantity and quality,with the number of flowers increased by 66%.
出处
《园艺学报》
CAS
CSCD
北大核心
2015年第8期1599-1605,共7页
Acta Horticulturae Sinica
基金
广东省科技计划项目(2011A020102007)