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Physiological traits associated with yield performance of spring wheat (Triticum aestivum ) under late-sown conditions

Indian Agricultural Research Journals

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Title Physiological traits associated with yield performance of spring wheat (Triticum aestivum ) under late-sown conditions
 
Creator NAGARAJAN, SHANTHA
JAGADISHRANE, JAGADISHRANE
 
Subject Triticum aestivum, Spring wheat, Late heat, Genetic variability, Yield components
 
Description A study was conducted for 2 crop seasons (1997-98 and 1998-99) with 12 diverse genotypes of wheat (Triticum aestivum L. emend. Fiori & Paol.), to understand the genetic variation in physiological growth and yield parameters under timely and late-sown conditions. Association between these characters and grain yield was also studied to identify physiological traits for selecting genotypes tolerant to late heat condition. All traits measured showed reduction under late sowing with the exception of harvest index, which registered an increase. Barring days to antbesis and grain-growth duration, all other growth parameters, viz spike number, and biomass/m2, and yield parameters, viz grain number and weight/spike, harvest index, grair-growth rate showed good variability (high CV) and significant correlation with yield under late-sown condition. In late-sown crop, canopy temperature depression measured after anthcsis showed significant correlation with grain yield (r= 0.0.681, P= 0.01). High correlation between yields of normal and late sowings (r = 0.879, P=0.01) indicated that superior genotypes perfomled well under late-sown condition by virtue of their high yield potential rather than stress tolerance.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2014-05-19
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/40709
 
Source The Indian Journal of Agricultural Sciences; Vol 72, No 3 (2002)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/40709/18230
 
Rights Copyright (c) 2014 The Indian Journal of Agricultural Sciences