Individual and interactive effects of temperature, carbon dioxide and abscisic acid on mung bean (Vigna radiata) plants

Autor: Megan E. Reardon, Mirwais M. Qaderi
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Journal of Plant Interactions, Vol 12, Iss 1, Pp 295-303 (2017)
Druh dokumentu: article
ISSN: 1742-9145
1742-9153
17429145
DOI: 10.1080/17429145.2017.1353654
Popis: We studied the effects of temperature, carbon dioxide and abscisic acid on mung bean (Vigna radiata). Plants were grown under 26/22°C or 32/28°C (16 h light/8 h dark) at 400 or 700 μmol mol−1 CO2 and received ABA application of 0 or 100 μl (10 μg) every other day for three weeks, after eight days of initial growth, in growth chambers. We measured 24 parameters. As individual factors, in 16 cases temperature; in 8 cases CO2; in 9 cases ABA; and as interactive factors, in 4 cases, each of temperature × CO2, and CO2 × ABA; and in 2 cases, temperature × ABA were significant. Higher temperatures increased growth, aboveground biomass, growth indices, photochemical quenching (qP) and nitrogen balance index (NBI). Elevated CO2 increased growth and aboveground biomass. ABA decreased growth, belowground biomass, qP and flavonoids; increased shoot/root mass ratio, chlorophyll and NBI; and had little role in regulating temperature–CO2 effects. Abbreviations: AN: net CO2 assimilation; E: transpiration; Fv/Fm: maximum quantum yield of PSII; gs: stomatal conductance; LAR: leaf area ratio; LMA: leaf mass per area; LMR: leaf mass ratio;φPSII: effective quantum yield of PSII; qNP: non-photochemical quenching; qP: photochemical quenching; SRMR: shoot to root mass ratio; WUE: water use efficiency
Databáze: Directory of Open Access Journals
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