ABSTRACT: Supplementary UV-B (12.2 kJ m−2 d−1 UV-BBE) provided to Vigna radiata for 2 h d−1 suppressed the length of root, shoot and whole plants, number of leaves, total leaf area, leaf area index, specific leaf
mass, fresh and dry mass of leaves and shoot, relative growth rate and net productivity. In unstressed green gram plants (10
kJ m−2 d−1 UV-BBE), triadimefon (TRIAD) (20 mg dm−3) enhanced growth in all parameters over control. The growth promoting effect of TRIAD enabled the UV-B impacted plants to
overcome the growth inhibitions to varying degrees indicating its protective potential against UV-B stress.
Biologia Plantarum 04/2012; 46(4):621-624. · 1.97 Impact Factor
ABSTRACT: Supply of aqueous solution of triadimefon (20 mg dm−3) to unstressed green gram plants increased the contents of soluble proteins, amino acids, nitrate and nitrite, and the activity
of nitrate reductase in the leaves and nitrate reductase in nodules. The nitrogenase activity in nodules and roots was also
increased. Number and fresh mass of nodules and their nitrate and nitrite contents were also higher than those of the controls.
In contrast, the UV-B stress (12.2 kJ m−2 d−1) suppressed nodulation and nitrogen metabolism in leaves and roots compared to plants under natural UV-B (10 kJ m−2 d−1). Triadimefon-treated plants did not show such severe inhibitions after exposure to elevated UV-B. Thus triadimefon increased
their tolerance to UV-B stress.
Biologia Plantarum 01/2006; 50(4):709-712. · 1.97 Impact Factor
ABSTRACT: Elevated UV-B radiation (12.2 kJ m–2 d–1) as against the ambient level of 10 kJ m–2 d–1 affected flowering, productivity and biomass partitioning of green gram [Vigna radiata (L.) Wilczek cv. KM-2]. UV-B stress delayed flowering initiation and achievement of 50 % flowering, reduced flower retention by 25 %, potential yield by 18 % and all yield attributes such as pod number (25 %), pod mass (41 %), seed number (32 %) and seed mass (45 %). Harvest index and shelling percentage were also reduced by 31 and 7 %, respectively. Application of triadimefon (20 mg dm–3) to unstressed plants accelerated flowering and enhanced flower retention (21 %), potential yield (15 %) and yield attributes (7 to 44 %). The partitioning of biomass between plant parts also showed improvement over the control plants. In UV-B-stressed plants, triadimefon treatment compensated the inhibitions to varying extents.
Biologia Plantarum 01/2004; 48(1):145-148. · 1.97 Impact Factor