• M.M.A. Mondal Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202, Bangladesh

    M.A. Malek Plant Breeding Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202, Bangladesh


The field experiment was conducted at the experimental farm of the Bangladesh Institute of Nuclear Agriculture, Mymensingh, during the period from November 2014 to February 2015 to investigate morpho-physiological characters, yield attributes and seed yield in three mustard mutants viz., MM 05, MM 25 and MM 98 along with a check variety, Binasarisa-4. Leaf area (LA), leaf area index (LAI) and AGR increased till 65 days after sowing followed by a decline due to leaf shedding at later growth stages. The mutant MM 05 showed superiority in respect of branch number, TDM, LA, and growth parameters like LAI and AGR at most of the growth stages and also produced the highest seed yield whilst Binasarisa-4 and MM 98, the low yielding genotypes, showed the inferiority in case of plant height, branch number, LA, LAI and AGR. Moreover, high yielding genotypes showed superiority in chlorophyll content, photosynthesis, total sugar content and nitrate reductase activity in leaves. The highest seed yield both plant-1 (2.88 g) and hectare-1 (2218 kg) was observed in MM 05 because of production of higher number of siliquae plant-1, seeds siliqua-1 and had capacity to superior dry matter partitioning to economic yield. In contrast, the lowest seed yield both plant-1 and hectare-1 was observed in MM 98 and BINAsarisa-4 due to inferiority in growth and yield contributing characters.


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