00000cab a22000004cb4500 IPP-00000660797 IPP 20250115144803.0 250115s2010 xx d | ||r |||||eng|| eng Cha-um, Suriyan Salt Tolerance Screening in Six Maize (Zea mays L.) Genotypes using Multivariate Cluster Analysis 2010 graphs ; tables ; references The effective indices for salt tolerant classification of maize genotypes were investigated. Six maize cultivars were treated with either 0 (control) or 200 mM NaCl (salt stress). Chlorophyll a (Chl a), chlorophyll b (Chl b), total chlorophyll (TC) and total carotenoid (C x+c) concentrations in the salt-stressed leaves dropped significantly. Chl a degradation in maize genotypes was correlated with maximum quantum yield of PSII (F v/F m). TC content was positively related to photon yield of PSII (Φ PSII). F v/F m, Φ PSII and photochemical quenching (qP) in the salt-stressed leaves decreased dramatically, related to the reduced net photosynthetic rate (P n), leading to growth reduction. The chlorophyll a fluorescence parameters, F v/F m, Φ PSII and qP, in the leaf tissues decreased, while non-photochemical quenching (NPQ) increased. Data relating to pigment degradation, chlorophyll a fluorescence diminution, photosynthesis reduction and growth inhibition in salt-stressed maize cultivars were subjected to hierarchical cluster analysis using SPSS software. Two classes of genotypes were identified: salt-tolerant (Waxy 1, Waxy 2 and Waxy 3) and salt-sensitive (Honey, Sweet 1 and Sweet 2). Maize Salt Physiological effects Kirdmance, Chalermpol Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist) Vol. 93, no. 2 (Jun. 2010), 156-164 Article FI