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.
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References
Abbas, S., Zaidi, P.H.: Chemical manipulation through triadimefon against ultraviolet-B induced injury to membrance components of Cicer arietinum L.-Plant Physiol. 24: 64-66, 1997.
Bjorn, L.O., Widell, S., Wang, T.: Evolution of UV-B regulation and protection in plants.-Adv. Space Res. 30: 1557-1562, 2002.
Caldwell, M.M., Ballare, C.L., Bornman, J.F., Flint, S.D., Bjorn, L.O., Teramura, A.H., Kulandaivelu, G., Tevini, M.: Terrestrial ecosystems, increased solar ultraviolet radiation and interactions with other climatic change factors.-Photochem. Photobiol. Sci. 2: 29-38, 2003.
Caldwell, M.M., Bjorn, L.O., Bornman, J.F., Flint, S.D., Kulandaivelu, G., Teramura, A.H., Tevini, M.: Effects of increased solar ultraviolet radiation on terrestrial ecosystems.-Photochem. Photobiol. 46: 40-52, 1998.
Feng, Z., Guo, A., Feng, Z.: Amelioration of chilling stress by triadimefon in cucumber seedlings.-Plant Growth Regul. 39: 277-283, 2003.
Fletcher, R.A.: Plant growth regulating properties of sterol inhibiting fungicides.-In: Purohit, S.S. (ed.): Hormonal Regulation of Plant Growth and Development. Pp. 103-113. Agro Botanical Publishers, Bikaner 1985.
Fletcher, R.A., Gilley, A., Sankhala, N., Davis, T.D.: Triazoles as plant growth regulators and stress protectants.-Hort. Rev. 24: 55-138, 2000.
Fletcher, R.A., Hofstra, G.: Triadimefon a plant multiprotectant.-Plant Cell Physiol. 26: 775-780, 1985.
Fletcher, R.A., Hofstra, G.: Triazoles as potential plant protectants.-In: Berg, D., Plempel, M. (ed.): Sterol Biosynthesis Inhibitors. Pp. 321-331. Ellis Horwood Ltd., Cambridge 1988.
Fletcher, R.A., Kraus, T.E.: Triazoles: protecting plants from environmental stress.-In: Meerveld, R. (ed.): Agri-Food Research. Pp. 15-19. Queens Printer, Ontario 1995.
Fletcher, R.A., Nath, V.: Triadimefon reduces transpiration and increases yield in stressed plants.-Physiol. Plant. 62: 422-424, 1984.
Francis, C.A., Flor, C.A., Prager, M.: Effects of bean association on yield component of maize.-Crop Sci. 18: 760-764, 1978.
Gopi, R., Sujatha, B.M., Karikalan, L., Panneerselvam, R.: Triadimefon induced variation in growth and metabolism in the NaCl stressed Vigna unguiculata L. seedlings.-Geobios 25: 235-241, 1998.
Jain, V.K., Dhingra, G.K., Ambrish, K.: Changes in productivity and biomass partitioning in field grown mungbean with response to supplementary UV-B radiation.-In: Srivastava, G.C., Singh, K., Pal, M. (ed.): Plant Physiology for Sustainable Agriculture. Pp. 301-308. Pointer Publishers, Jaipur 1999.
Karikalan, L., Rajan, S.N., Gopi, R., Sujatha, B.M., Panneerselvam, R.: Induction of salt tolerants by triadimefon in pigeon pea (Cajanus cajan L. Millsp.).-Indian J. exp. Biol. 370: 825-829, 1999.
Mark, S.M., Tevini, M.: Effects of solar UV-B radiation on growth, flowering and yield of central and southern Eurpean bush bean cultivars (Phaseolus vulgaris L.).-Plant Ecol. 128: 114-125, 1997.
Musil, C.F., Chimphango, S.B., Dakora, F.D.: Effects of elevated ultraviolet-B radiation on native and cultivated plants of southern Africa.-Ann. Bot. 90: 127-137, 2002.
Panneerselvam, R., Muthukumarasamy, M., Rajan, S.N.: Amelioration of NaCl stress by triadimefon in soybean seedlings.-Biol. Plant. 41: 133-137, 1998.
Rajendiran, K., Ramanujam, M.P.: Efficacy of triadimefon treatment in ameliorating the UV-B stress in green gram.-In: Khan, M. (ed.): National Symposium on Environmental Crisis and Security in the New Millennium. Pp. 41-42. National Environmental Science Academy, New Delhi 2000.
Rajendiran, K., Ramanujam, M.P.: Alleviation of ultraviolet-B radiation-induced growth inhibition of green gram by triadimefon.-Biol. Plant. 46: 621-624, 2003.
Sujatha, B.M., Gopi, R., Karikalan, L., Rajan, S.N., Panneerselvam, R.: Alteration of growth and carbohydrate metabolism by triadimefon in NaCl stressed Bhendi seedlings.-Geobios 26: 37-42, 1999.
Tevini, M., Teramura, A.H.: UV-B effects on terrestrial plants.-Photochem. Photobiol. 50: 479-487, 1989.
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Rajendiran, K., Ramanujam, M. Improvement of Biomass Partitioning, Flowering and Yield by Triadimefon in UV-B Stressed Vigna radiata (L.) Wilczek. Biologia Plantarum 48, 145–148 (2004). https://doi.org/10.1023/B:BIOP.0000024293.31266.a2
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DOI: https://doi.org/10.1023/B:BIOP.0000024293.31266.a2