Combining ability and gene action studies for salinity tolerance in tomato (Solanum Lycopersicum Mill.)

Combining ability and gene action studies for salinity tolerance in tomato (Solanum Lycopersicum Mill.)

2007

A:PS

Combining ability effects and gene action studies for salinity tolerance were carried out for eight salt tolerant genotypes using lines x tester mating design. Twenty four F1s along with their parents, eight lines and three testers were evaluated. Based on the gca effect and per se performance for yield and yield contributing characters L1, L2 and L3 were the top three lines identified as desirable parents. The hybrids L1XT1, L2XT1 and L3XT1 showed high mean performance for yield and other component characters. While the sca effect did not always coincide with the ranking based on per se performance. Study on variance due to gca and sca indicated preponderance of additive gene action for some characters, dominance gene action for few characters like dry weight, fruit yield plant-I, relative yield etc. Based on the gene action for yield and salt tolerance, the selected three crosses could be advanced by following either one or two cycles of intermating or reciprocal recurrent selection.

v.34(1):37-39, VEGETABLE SCIENCE

Research > Published Articles