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Pak. J. Bot., 46(5): 1871-1875, 2014. |
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Updated: 16-10-14 | ||||
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COMBINING ABILITY FOR MATURITY AND PLANT HEIGHT IN BRASSICA RAPA (L.) SSP. DICHOTOMA (ROXB.) HANELT
ADNAN NASIM1, FARHATULLAH1*, NAQIB ULLAH KHAN1, SYED MUHAMMAD AZAM1, ZEESHAN NASIM2 AND M. AFZAL1
Abstract: A 5 × 5 F1 diallel cross hybrids of Brassica rapa (L.) ssp. dichotoma (Roxb.) Hanelt along with parents were evaluated through combining ability for days to flowering (initiation and completion), days to maturity and plant height. Highly significant differences were recorded for all the traits. Mean squares due to general, specific and reciprocal combining ability were significant for all the traits except plant height for which the latter two components were non-significant. Prevalence of additive (plant height), non-additive (days to flowering completion; days to maturity) and reciprocal effects (days to flowering initiation) were detected. Parental line G-403 was best general combiner for all the traits. The F1 hybrids G-902 × G-265 (days to flowering initiation), G-902 × G-403 (days to flowering completion), G-265 × G-1500 (days to maturity) and G-909 × G-265 (plant height) were superior and may be exploited for future breeding programs.
Key words: Brassica rapa, Diallel, Combining ability, Maturity, Plant height.
1The University of Agriculture, Peshawar, Pakistan 2Institute of Biotechnology and Genetic Engineering, Peshawar, Pakistan *Corresponding author’s e-mail: drfarhat@aup.edu.pk |
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