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Physiological adaptability of sweetpotato (Ipomoea batatas) genotypes as influenced by seasons with emphasis on orange-fleshed sweetpotato

Indian Agricultural Research Journals

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Title Physiological adaptability of sweetpotato (Ipomoea batatas) genotypes as influenced by seasons with emphasis on orange-fleshed sweetpotato
 
Creator ATTALURI, SREEKANTH
SANGAKKARA, U R
COSTA, W A J M DE
 
Subject Analysis; Correlations; Kharif; Orange/White fleshed sweetpotato genotypes; Physiological growth; Rabi
 
Description A field experiment was conducted during both rainy (kharif) and winter (rabi) seasons of 2007–08 to determine the physiological basis of yield variation comprising six sweetpotato (Ipomoea batatas) genotypes. The improved whitefleshed sweetpotato genotype ‘CIP-SWA 3’ out yielded all the other genotypes in both the seasons. However, among the orange-fleshed sweetpotatoes, ‘IB 97-6/15’ and ‘IB 97-2/5’ were the second best. In kharif, yields were constrained by excessive vine length, greater leaf number and leaf area, lowered biomass with reduced partitioning of dry matter to tubers. A general reverse trend in these characteristics induced higher yields in rabi. In both seasons, the local variety followed by ‘CIP SWA 3’ recorded relatively better crop growth characteristics. Early tuberization was chiefly responsible for higher yields in rabi. Further despite low leaf area index values, a higher photosynthetic efficiency in terms of net accumulation ratio, followed by higher bulking rate and partioning coefficient values resulted in higher yields during rabi.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor ICAR
 
Date 2011-01-05
 
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/2588
 
Source The Indian Journal of Agricultural Sciences; Vol 81, No 1 (2011)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/2588/710
 
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