TY - JOUR
T1 - Changes in antioxidant potential and sink-organ dry matter with pigment accumulation induced by hexaconazole in Plectranthus forskholii Briq
AU - Lakshmanan, Ganapathy Murugan Alagu
AU - Jaleel, Cheruth Abdul
AU - Gomathinayagam, Muthiah
AU - Panneerselvam, Rajaram
PY - 2007/11
Y1 - 2007/11
N2 - An investigation was conducted in Plectranthus forskholii by giving it different concentrations (10, 15, 20, 25, and 30 mg L-1) of hexaconazole, a fungicide cum plant-growth regulator, in order to find out its effects on growth, pigment composition, and antioxidant potential. The treatments were given as soil drenching on different growth stages. All the concentrations of hexaconazole used significantly decreased the stem length and leaf area, whereas side branches, fresh and dry matter content, photosynthetic pigments, and antioxidant potential were increased. The number of tubers, length and girth of tubers, fresh and dry weight of tubers and tuber pigments were found to be the highest at a 25 mg L-1 concentration of hexaconazole. Hexaconazole application at 25 mg L-1 concentration was found to be more effective than 10, 15, 20, 25, and 30 mg L-1 in promoting fresh and dry weight of root tuber over 165 days after planting. The pigments like chlorophyll, carotenoid; anthocyanins, xanthophylls and antioxidants such as ascorbic acid, reduced glutathione and total phenol were significantly increased under hexaconazole treatment when compared to untreated control plants. To cite this article: G.M.A. Lakshmanan et al., C. R. Biologies 330 (2007).
AB - An investigation was conducted in Plectranthus forskholii by giving it different concentrations (10, 15, 20, 25, and 30 mg L-1) of hexaconazole, a fungicide cum plant-growth regulator, in order to find out its effects on growth, pigment composition, and antioxidant potential. The treatments were given as soil drenching on different growth stages. All the concentrations of hexaconazole used significantly decreased the stem length and leaf area, whereas side branches, fresh and dry matter content, photosynthetic pigments, and antioxidant potential were increased. The number of tubers, length and girth of tubers, fresh and dry weight of tubers and tuber pigments were found to be the highest at a 25 mg L-1 concentration of hexaconazole. Hexaconazole application at 25 mg L-1 concentration was found to be more effective than 10, 15, 20, 25, and 30 mg L-1 in promoting fresh and dry weight of root tuber over 165 days after planting. The pigments like chlorophyll, carotenoid; anthocyanins, xanthophylls and antioxidants such as ascorbic acid, reduced glutathione and total phenol were significantly increased under hexaconazole treatment when compared to untreated control plants. To cite this article: G.M.A. Lakshmanan et al., C. R. Biologies 330 (2007).
KW - Ascorbic acid
KW - Dry matter
KW - Hexaconazole
KW - Pigments
KW - Plectranthus forskholii
KW - Reduced glutathione
KW - Total phenol
UR - http://www.scopus.com/inward/record.url?scp=34848827191&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34848827191&partnerID=8YFLogxK
U2 - 10.1016/j.crvi.2007.08.008
DO - 10.1016/j.crvi.2007.08.008
M3 - Article
C2 - 17923375
AN - SCOPUS:34848827191
SN - 1631-0691
VL - 330
SP - 814
EP - 820
JO - Comptes Rendus - Biologies
JF - Comptes Rendus - Biologies
IS - 11
ER -