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Distinguishing three Dragon fruit (Hylocereus spp.) species grown in Andaman and Nicobar Islands of India using morphological, biochemical and molecular traits

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Title Distinguishing three Dragon fruit (Hylocereus spp.) species grown in Andaman and Nicobar Islands of India using morphological, biochemical and molecular traits
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Creator K. Abirami. S. Swain, V. Baskaran, K. Venkatesan, K. Sakthivel and N. Bommaysamy
 
Subject Anti-oxidants, Characterization, Dragon fruit, Genetic diversity, ISSR marker
 
Description Not Available
Dragon fruit (Hylocereus spp.), an important tropical fruit belonging to the family Cactaceae, is
rich in essential nutrients such as vitamins, minerals, complex carbohydrates, dietary fbres and
antioxidants. This study aims to distinguish three dragon fruit species well adapted to Andaman
and Nicobar Island through morphological (34 quantitative and 26 qualitative traits), biochemical
(5 traits) and molecular (14 ISSR primers) characterization. Morphological characterization revealed
that presence of considerable amount of genetic variations among them especially for fruit characters
viz., colour of peel and pulp. Cladode characters such as number of spines (3–5), length of areoles
(mm) as 1–4, margin ribs of cladode (convex or concave) and its waxiness (weak or strong white waxy
or light waxy) could be used for identifcation of three Hylocereus spp. under present study. Highest
co-efcient of variation (%) obtained for pulp weight (88.7), whereas, lowest in distance of anthers
belowstigma (3.3). Fruit and pulp weight (g) ranged from 26.5–419.3 and 10.3–258.8 with mean value
of 204.8 and 125.3, respectively. Comparatively, high phenol (71.3–161.3) and favonoid (26.6–508.2)
content observed in peels than pulp (32.5–130.0 and 45.0–258.2) of fruit indicating higher antioxidant
potential. Highest total carotenoids (µg 100 g−1), β-carotene (µg 100 g−1) and xanthophyll (µg g−1)
content obtained in pulp on DGF3 (33.8), DGF4 (55.9) and DGF3 (32.7), whereas, in peel on DGF2
(24.3), DGF4 (18.5) and DGF2 (24.1), respectively. DPPH-based scavenging activity (%) revealed higher
scavenging activity of peels (55.6–81.2) than pulp (36.0–75.3) extracts. Comparatively, ABTS-based
scavenging activity (%) was found more than DPPH-based one. Sixteen ISSR primers screened, 14
were produced 178 reproducible amplifed bands. Number of amplifed bands varied from 5 in UBC887
to 19 in UBC811 with an average of 12.71 bands per primer. Range of polymorphic bands and %
polymorphism observed were 1–13 and 20.0–92.8, respectively. The polymorphic information content
value of ISSR marker ranged from 0.42 (UBC895) to 0.91 (UBC 856). Cluster analysis distinguished
three diferent Hylocereus species on the basis of geographic origin and pulp colour by forming
separate groups and two genotypes each showed 52% (DGF1 and DGF3) and 76% (DGF2 and DGF4)
genetic similarity. Key traits identifed for distinguishing three diferent Hylocereus species were:
Pulp/ peel colour of fruits, number of spines and length of areoles in cladode. Genotypes with high
carotenoid and xanthophylls content (DGF4 and DGF2) identifed under present study may be of
industrial importance for development of nutraceutical products to meet out the vitamin-A defciency
among humans in tropical regions needed future focus.
Not Available
 
Date 2021-11-15T04:59:34Z
2021-11-15T04:59:34Z
2021-02-11
 
Type Research Paper
 
Identifier K. Abirami. S. Swain, V. Baskaran, K. Venkatesan, K. Sakthivel and N. Bommaysamy. 2021. Distinguishing three Dragon fruit (Hylocereus spp.) species grown in Andaman and Nicobar Islands of India using morphological, biochemical and molecular traits. Scientific Reports. 11(1): 1-14
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/67325
 
Language English
 
Relation Not Available;
 
Publisher Nature Scientific Reports