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Path‐Coefficient Analysis of Leaf‐Anatomical Characters Affecting Frost Injury in Potato
Author(s) -
Tiwari S. P.,
Sukumaran N. P.,
Khushu C. L.
Publication year - 1986
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.1986.tb01065.x
Subject(s) - frost (temperature) , path coefficient , biology , path analysis (statistics) , horticulture , botany , solanum tuberosum , solanum , positive correlation , agronomy , mathematics , statistics , materials science , medicine , composite material
Correlation and path‐coefficient analysis for leaf‐anatomical characters affecting frost injury was carried out in twenty eight varieties and accessions belonging to several wild and cultivated tuber‐bearing species of Solanum in order to identify selection criteria in breeding for frost resistance in potato Palisade thickness and palisade proportion showed a significant negative correlation with frost injury Path‐coefficient analysis revealed that palisade thickness had the highest direct negative effect on frost injury whereas leaf thickness, not conforming to its behaviour as found in simple correlation analysis, emerged ax the next highest factor to have direct positive effect on frost injury. Direct and indirect effects of these factors on frost injury vis a vis their interdependence were found to be in support ot the ‘palisade thickness method’ for screening frost resistant genotypes in potato breeding programmes.