COMPARATIVE RESPONSE OF YIELD COMPONENTS IN HEXAPLOID TRITICALE X BREADWHEAT DERIVATIVES TO CONTRASTING SOIL PHOSPHORUS LEVELS

Published on Oct 11, 2019 10:38 AM

The response of 23 derivatives of hexaploid triticale x breadwheat crosses at two contrasting
levels of soil phosphorus was examined. High phenotypic variability was recorded in the
two P environments for all the traits except early growth vigour (normal P level) and spikes/
plant (P deficient). Grain yield/plant, followed by number of tillers and spikes/plant, early
growth vigour, and leaf area index were most sensitive to phosphorus-deficiency, which
caused delayed heading and maturity and increased specific leaf weight. The heritability
for grain yield was low under both the phosphorus levels, which necessitates the use of
indirect selection parameters. The overall character association and path coefficient
analysis revealed that selection for higher lOOO-grain weight and increased number of
spikes/plant in both the environments, whereas that for relatively taller plants under
phosphorus deficiency could be useful for improvement in grain yield.
 

Keywords: Character correlations, Phosphorus stress, triticale x breadwheat, ScenIc (crcalc, Triticule aestivum

Info

Year: 1996
Volume: 56
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

Authors

R. K. GAUTAM AND G. S. SETHI info_circle

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