Volume 36, Number 2
 
 
 
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Science, Technology and Development Vol. 36 (2), 2017
Research Article
Inheritance Pattern of Some Quality Parameters in Solanum lycopersicum L. under Lead Stress
Muhammad Mazhar Hussain, Asif Saeed, Aiman Hina, Atif Mehmood, Sultan Mahmood, Taj Naseeb Khan, Muhammad Umair and Ghulam Jellani
 
Abstract: Eight lead (Pb) tolerant and five Pb-intolerant genotypes along with their 40 F1 crosses were evaluated with two lead levels, i.e., 300 ppm, 600 ppm, and control. Significant variation was found in lines, testers, crosses and line × tester interactions for all the traits under study in both levels of stress. For lycopene contents, maximum positive and significant general combining ability (GCA) effects were observed in line Picdeneato, while line 006231 depicted maximum negative effects. Estimates of specific combining ability (SCA) effects showed that under 300 ppm lead stress, cross combination 9086 × Marmande exhibited maximum positive significant SCA effect for total soluble solids (TSS). Cross combination Sitara TS-01×17882 revealed maximum significant heterosis for total soluble solids. Positive heterosis for lycopene contents, ascorbic acid contents and total soluble solids could be considered good criterion and these quality traits may be exploited by hybrid breeding programs.
 
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