Influence of nitrogen forms ratio on growth and photosynthetic characteristics in Prunella vulgaris.
- Author:
Manman YU
1
;
Li LIU
;
Qiaosheng GUO
;
Qiong YAO
;
Ning ZHAO
;
Yuhang CHEN
Author Information
- Publication Type:Journal Article
- MeSH: Biomass; Chlorophyll; Nitrogen; chemistry; metabolism; pharmacology; Photosynthesis; drug effects; Plant Leaves; drug effects; Prunella; growth & development; metabolism; Quaternary Ammonium Compounds; chemistry; metabolism
- From: China Journal of Chinese Materia Medica 2011;36(5):530-534
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVEThe effects of different nitrogen forms on the growth and photosynthetic characteristics of Prunella vulgaris were observed.
METHODWater culture experiments were carried out to observe the effects of NH4+: NO3- ratios(100:0, 75: 25, 50:50, 25:75, 0:100 in mmol x L(-1)) on the growth and photosynthetic characteristics of P. vulgaris.
RESULTThe leaf area, fresh biomass and P(n) of these cultivars increased with the increasing of NH4(+) -N: NO3(-) -N ratios, and they were found to be the highest in 25: 75 NH4(+) -N: NO3)-) -N. However, they decreased with the increasing NH4(+) -N: NO3(-) -N ratio further. P. vulgaris had a minimum leaf area, biomass, chlorophyll content and P(n) in pure ammonium group. The biggest chlorophyll and carotenoid contents were found in the ratios of NH4(+) -N to NO3(-) -N of 50: 50.
CONCLUSIONThe results indicated that properly increasing nitrate proportion could promote the growth and photosynthesis of P. vulgaris.
