Vol. 7, Issue 2 (2019)
Estimation of heterosis for seedling growth traits in Bauhinia variegata L
Author(s): Tesfaye Ashine and IK Thakur
Abstract: Hybridization plays an important role in tree improvement programme as it enables creation of new recombinants with favorable traits that could be utilized for increased productivity. Aiming at estimating heterosis and identifying superior Bauhinia variegata hybrids, ten genotypes involving 6 females (P3, P8, P16, P24, P27, and P32) and 4 males (P12, P13, P14 and P17) were crossed using Line x Tester Mating Design. The resulting 24 F1 hybrids along with parents were raised in the mist chamber of the Department of Tree Improvement and Genetic Resources, Dr. Y S Parmar University of Horticulture and Forestry, Nauni, Solan (H.P.) during 2017-2018 in a Randomized Block Design (RBD) with three replications. Percentage mid-parent and better- parent heterosis was estimated for seedling growth traits. Hybrid P8 × P12 revealed maximum and desirable positive mid parent (19.89%) and better parent (13.07%) heterosis for seedling height and positive desirable mid and better parent heterosis for number of leaves per plant. Hybrid P16 × P13 showed maximum positive significant better parent (11.34%) heterosis for collar diameter. Also T3× T17 showed maximum positive mid parent heterosis (44.72%) for number of primary branches while T32 × T13 had maximum mid parent (169.81%) and better parent (118.91%) heterosis for number of leaves per plant. Hybrid T3 × T12 had maximum mid parent (35.27%) and better parent (33.14%) heterosis for leaf area while T3 × T14 exhibited maximum mid parent (12.09%) and better parent (7.52%) heterosis for internodal distance. The hybrids P16 × P14, P32 × P17 and P3 × P17 could be used for future breeding program. The present results revealed that hybrids had sustained hybrid vigour both for seedling growth traits when compared with its parents even at nursery stage.
Pages: 1547-1552 | 357 Views 60 Downloads
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How to cite this article:
Tesfaye Ashine, IK Thakur. Estimation of heterosis for seedling growth traits in Bauhinia variegata L. Int J Chem Stud 2019;7(2):1547-1552.
