Flowering, Physiological and Biochemical Responses of Heliconia Genotypes Under Shade House Conditions

M. Dilipkumar Naik*, M. Raja Naik¹, Lalitha Kadiri¹, K. Arunodhayam², Y.Sharatkumar Reddy³

¹Department 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

²Department 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

Corresponding Auhtor's Email: naik_raja2006@rediffmail.com

DOI : http://dx.doi.org/10.12944/CARJ.7.3.13

Abstract:

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.

Keywords:

Biochemical Attributes; Heliconia Genotypes; Flowering; Physiological; Shade House Condition; Performance to the Region

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