Journal of Pharmacognosy and Phytochemistry
Vol. 8, Issue 2 (2019)
Line × tester analysis for growth and biomass characteristics of Populus deltoides Bartr.
Sneha Dobhal, Vinod Kumar, Aman Dabral, Indra Singh, Sanjeev Thakur and Raj Kumar
Line × tester analysis was carried out in Populus deltioides
to determine the genetic interaction in the expression of various quantitative characters related to productivity. Combining ability revealed that the estimates of SCA variance (σ2
SCA) were more than the GCA variance (σ2
GCA) for all the characters studied. Later the gene action study revealed that dominance variance was observed more than the additive variance for all the parameters studied. The proportional contribution of testers were higher than individual contribution of lines or line × tester interaction except for plant height, collar diameter, number of leaves/plant, root length and fresh root weight where the contribution of interactions was more. The Line L-62/84 and tester L-17/92 was found to be good general combiners and thus appeared to be worthy of exploiting in Populus deltioides
improvement through breeding and recurrent selection followed by cloning for developing commercial superior clones. On the basis of mean performance and significant desirable SCA effects, the combinations L-62/84 X S7
was found to be the most promising family for growth and biomass characters and is recommended for within family selection followed by heterotic breeding.
Pages: 177-182 | 1387 Views 495 Downloads
Sneha Dobhal, Vinod Kumar, Aman Dabral, Indra Singh, Sanjeev Thakur and Raj Kumar. Line × tester analysis for growth and biomass characteristics of Populus deltoides Bartr.. J Pharmacogn Phytochem 2019;8(2):177-182.