eng Enviro Research Publishers Current Agriculture Research Journal 2347-4688 2321-9971 2019-12-18 7 3 368 376 7526 article M. Dilipkumar Naik 1 M. Raja Naik 1 Lalitha Kadiri 1 K. Arunodhayam 2,3 Y.Sharatkumar Reddy 2,3 Department of Floriculture and Landscape Architecture, College of Horticulture (Dr.Y.S.R.H.U), Anantharajupeta – 516 105, Y.S.R Kadapa Dist. Andhra Pradesh, India Department of Entomology, College of Horticulture (Dr.Y.S.R.H.U), Anantharajupeta – 516 105, Y.S.R Kadapa Dist. Andhra Pradesh, India 3Department of Plant Physiology, Horticultural Research Station, Anantharajupeta – 516 105, Y.S.R Kadapa Dist. Andhra Pradesh, India The present research work was carried out at the College of Horticulture, Anantharajupeta during 2018-19. The experiment was laid out in Randomized Block Design, with three replications and with 8 genotypes. The treated rhizomes were planted under 50 per cent shadehouse condition. All the flowering, physiological attributes and anthocyanin content varied significantly among multiple heliconia genotypes grown under shadehouse conditions. Among multiple genotypes, inflorescence length (26.18 cm), number of spikes clump^-1 (4.50), number of bracts spike^-1 (9.56) stomatal conductance (0.38 mol m^-2 s^-1), rate of photosynthesis (9.23 µmol m^-2 s^-1), transpiration rate (4.17 mmol m^-2 s^-1) and anthocyanin content in flowers (3.64 mg 100 g^-1 tissue) recorded highest in genotype G₆. However significantly longest stalk (61.25 cm), maximum bract size (25.38 cm²) were recorded in G₂ and G₁, respectively. While more leaf intercellular CO₂ (317.38 µmol m^-2 s^-1) was recorded in genotype G₃. http://www.agriculturejournal.org/volume7number3/flowering-physiological-and-biochemical-responses-of-heliconia-genotypes-under-shade-house-conditions/ Biochemical Attributes; Heliconia Genotypes; Flowering; Physiological; Shade House Condition; Performance to the Region