Journal of Pharmacognosy and Phytochemistry
Vol. 6, Issue 6 (2017)
Studies on heterosis and combining ability for yield and yield attributes in Tomato (Lycopersicon esculentum Mill.)
Author(s):
Pradeep Kumar Singh
Abstract:
Eight genetically divers parents of tomato (
Lycopersicon esculentum Mill.) were crossed in diallel mating design without reciprocal to know heterosis for plant height. In order of merit the two best performing F
1 hybrids (ATL-13 x ATL-9744, IIVR-Sel-2 x ATL-9744) exhibited heterosis percentage of 0.22 in E
1 and 118.79 in E
2 respectively for marketable fruit weight and fruit yield over the standard check, IIVR-Sel-2 x H-36, IIVR Sel-2 x Manithoiba, IIHR-3 x Manithoiba and IIHR-3 x Manithoiba in E
2 yielding 74.63 over the standard parent, these promising crosses also recorded positive sca. The high performing crosses for important characters showed that in general these crosses involved high x high, high x medium, medium x low and high x low general combiners. The low x low crosses giving high sca values may be due to the genetic diversity of the parents and non-allelic interaction.
Pages: 2140-2143 | 1615 Views 403 Downloads
Pradeep Kumar Singh. Studies on heterosis and combining ability for yield and yield attributes in Tomato (Lycopersicon esculentum Mill.). J Pharmacogn Phytochem 2017;6(6):2140-2143.