PJB-2018-986
Selection of robust parental genotypes through heterotic studies in Brassica juncea
Obaid Ullah Sayal and Shah Jehan Khan
Abstract
Present investigations were made with the aim to identify the robust parental genotype through heterosis in Brassica juncea L. For this purpose, the present research was conducted during the two consecutive years 2013-14 and 2014-15 at Department of Plant Breeding and Genetics, Faculty of Agriculture, Gomal University, Dera Ismail Khan, Pakistan. Seven cultivars of Brassica juncea including four exotic (Oriental Mustard, Mustard Florida, Dacca Raya, Elight) and three local genotypes (S-9, Bard-I and BR) were crossed in a diallel fashion during 2013-14. The seeds of parental genotypes and F1 crosses were grown during 2014-15 in a randomized complete block design for further comparison. Data were recorded for plant height, pods per the main inflorescence, and main inflorescence length, and pod length, seeds per pod, thousand grain weight and yield per plant. Amongst seven cultivars, Dacca Raya showed heterosis for plant height, pod length and pods per main inflorescence when treated as female parent. Whereas for seeds per pod and thousand grains weight, Mustard Florida exhibited heterosis when treated as male parent. However, F1 hybrids of these cultivars revealed significant heterosis for yield trait. Amongst other exotic cultivars, Elight and Oriental Mustard showed heterosis for traits like main inflorescence length and thousand grains weight. In case of better parent heterosis, Mustard Florida was found as the best genotype for seeds per pod, thousand grains weight and seed yield. Hence, it is suggested that exotic cultivars Dacca Raya and Mustard Florida could be included in future breeding program for improvement in seed yield and its attributes.
To Cite this article:
Sayal, O.U. and S.J. Khan. 2020. Selection of robust parental genotypes through heterotic studies in Brassica juncea. Pak. J. Bot., 52(4): DOI: http://dx.doi.org/10.30848/PJB2020-4(8)
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