Effects of plant-growth-promoting bacteria on growth and yield of pepper under limited nitrogen supply

被引:5
作者
del Amor, F. M. [1 ]
Porras, I. [1 ]
机构
[1] Inst Murciano Invest & Desarrollo Agr & Alimentar, Murcia 30150, Spain
关键词
Plant-growth-promoting bacteria; Capsicum annuum L; soilless; photosynthesis; chlorophylls; flavonoids; SWEET-PEPPER; FRUIT-QUALITY; AZOSPIRILLUM; INOCULATION; METABOLISM; PHOTOSYNTHESIS; BIOSYNTHESIS; CULTIVATION; IRRADIANCE; STARCH;
D O I
10.4141/CJPS08116
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
del Amor, F. M. and Porras, I. 2009. Effects of PGPB on growth and yield of pepper under limited nitrogen supply. Can. J. Plant Sci. 89: 349-358. The influence of plant-growth-promoting bacteria (Azospirillum brasilense and Pantoea dispersa) on sweet pepper plants (Capsicum annuum L.) under limited N supply was studied. Inoculation did not affect leaf CO, assimilation, Ci/Ca (the ratio of the intercellular to the ambient CO2 concentration), concentration of chlorophylls, chlorophyll fluorescence (maximum quantum efficiency of PSII) or SPAD readings. Total plant dry weight was significantly reduced in both inoculated and non-inoculated plants when the N supply was reduced from 12 (control) to 7 mM, whilst the NO3- and total-N concentrations in the leaves were not significantly affected by inoculation. Inoculation did not affect marketable fruit yield or the pigments (chlorophylls, lycopene and P-carotene) and carbohydrate (sucrose, glucose and fructose) contents in the fruits but flavonoids and anthocyanins were increased significantly by the addition of the bacteria, relative to non-inoculated plants under limited N supply.
引用
收藏
页码:349 / 358
页数:10
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