Morpho-nutritional characterization of drumstick (Moringa oleifera L.) genotypes under Bhubaneswar condition
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Date
2018-09-18
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Abstract
A two pronged study on twenty different drumstick genotypes was carried out at the
Central Horticultural Experiment Station, ICAR-IIHR, Bhubaneswar during the year 2017-18
to characterize the genotypes on the basis of morphological and nutritional parameters along
with the variability, heritability and divergence among the genotypes. Significant variations
were observed among the genotypes for all the morphological and nutritional characters
except leaf length, leaf width and leaflet width. The heritability estimates were found to be
high along with high genetic advance in case of plant height, total number of leaflets per
compound leaf, fresh weight of leaves, calcium, manganese, zinc and ascorbic acid content
indicating the role of additive gene action. The lowest heritability (10%) was found in leaflet
width with low genetic advance indicating higher influence of environmental fluctuations. As
per the divergence study it was found that the twenty drumstick genotypes were grouped into
five clusters, out of which two clusters (clusters II and IV) were monogenotypic. The cluster
mean in respect of morphological characters such as leaflet length, leaflet width and leaf dry
recovery percentage were found highest in cluster II whereas, for leaf length, leaf width, total
number of leaflets per compound leaf and fresh weight of leaves were found maximum in
cluster IV. From nutritional point of view, the maximum cluster mean was recorded in cluster
II for iron, manganese and zinc content. Whereas, cluster mean for calcium content was found
maximum in cluster IV. The intra cluster distance was found maximum for cluster I (311.518)
and minimum for cluster II and IV. Inter cluster distance was recorded maximum (2036.789)
in cluster II and cluster IV whereas, minimum (437.588) inter cluster distance was found in
cluster I and cluster III. Among all the characters the maximum percent contribution towards
genetic divergence was by ascorbic acid (40 %) followed by zinc content (23.16 %) and iron
content (13.68%). The genotype CHDS 29 had recorded maximum amount of calcium,
potassium and magnesium and CHDS 44 with maximum iron content. On the other hand
CHDS 35 had performed better with regards to leaf length, leaf width, total number of leaflets
per compound leaf and number of leaflets per secondary rachis.
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