Indian Society of Genetics & Plant Breeding

Assessment of genotypic variation in soybean for water use efficiency (WUE) using Carbon Isotope Discrimination (CID) technique

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Genotypic variations were analyzed in a set of 91 diverse
soybean accessions for 10 morphological traits and water
use efficiency (WUE) using Carbon Isotope Discrimination
(CID) technique. The Euclidean distance was used as a
measure of dissimilarity among the accessions and Ward’s
method was applied to classify the genotypes and draw
the dendrogram. Moderate level of variability for CID (19.95
to 22.91%) was observed among the genotypes. A
significant negative correlation (–0.241) between water use
efficiency (WUE) and days to maturity was observed. The
genotypes in two clusters (Cluster I and V) differed
significantly for most of the traits including CID (20.76 Vs
22.43%), days to 50% flowering (50.75 Vs 39.43), days to
maturity (117.25 Vs 107.67), plant height (94.70 Vs 63.50
cm), and yield per plant (8.05 Vs 11.03 g). Such genotypes
hold promise for developing high yielding and drought
tolerant (low CID) genotypes through hybridization

Keywords: Glycine max (L.) Merrill, water use efficiency, CID, diversity analysis


Year: 2012
Volume: 72
Issue: 2
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906


Madanpal Singh info_circle
K. P. Singh, Deepti Nagaich info_circle
K. V. Bhat info_circle

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