CHARACTERIZATION OF BIRD OF PARADISE (Strelitzia reginae L.) FOR MORPHOLOGICAL AND PHYSIOLOGICAL TRAITS
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Date
2017-08
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of Horticultural Sciences, Bagalkot. (College of Horticulture, Bengaluru).
Abstract
An endeavor was made during 2015-16 to characterize 21 genotypes of Bird of Paradise
(Strelitzia reginae L.) for various morphological and physiological traits under open field
condition at ICAR-Indian Institute of Horticultural Research, Hessaraghatta, Bengaluru,
Karnataka. Among growth parameters, genotype BOP 41 recorded higher plant height (166.3
cm), fans per plant (29.67), leaves per plant (389) and plant spread (NS-279.67 cm, EW-275.33
cm) indicating the vigor of plant. Genotype BOP 33 exhibited higher leaf lamina length (40.51
cm), lamina breadth (13.67 cm), leaf length (124.18 cm) with higher specific leaf area (311.92
cm
2
g
-1
). Among flower quality parameters BOP 45 recorded higher spike length (149.43 cm)
and stalk length (128.66 cm), whereas maximum fresh weight (140.09 g), spathe diameter (23.09
mm), spike diameter (16.33 mm) with longer vase life (10 days) was recorded in genotype BOP
33. Genotype BOP 41 found superior with respect to spike yield per plant (41.33). Among
physiological parameters, genotype BOP 45 recorded higher leaf wax content (0.62 mg cm-2
)
with relative water content (94.91%). Whereas transpiration rate (6.61 m mol m-2
s
-1
),
photosynthesis rate (7.33 ยต mol CO2 m
-2
s
-1
) with stomatal conductance (0.11 mol m-2
s
-1
) and
total chlorophyll content (2.63 mol m-2
s
-1
) was higher in genotype BOP 16 and stomata number
was maximum (40.80 mm-2
) in genotype BOP 31. With respect to flower color pigment
maximum anthocyanin content was found in genotype BOP 22 (124.65 mg 100g-1
), while
genotype BOP 6 recorded maximum carotenoid content (22.31 mg 100g-1
) indicating bright
colored flower production. The genotypes expressing better morphology can be used as a trait
specific germplasm in breeding programme. The results of physiological parameters viz., leaf
wax, stomatal density and transpiration rate will be useful for breeders to identify BOP
genotypes with better drought tolerance.