IMPACT OF MORPHO-PHYSIOLOGICAL TRAITS ON SEED YIELD IN RAPESEED
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.
BBS (Bangladesh Bureau of Statistics). 2016. Hand book of Agricultural Statistics, December, 2015. Ministry of Planning, Govt. People’s Repub. Bangladesh. p. 84.
Bhat, S. A., Khan, F. A. and Khan, M. I. 2006. Effect of nitrogen and phosphorus on growth, nutrient content, seed yield and quality of mustard. Indian J. Plant Physiol., 11 (3): 281-286.
Dubois, M., Gilles, K. A., Hamilton, J. K., Robers, P. A. and Smith, F. 1956. Colorimetric method for determination of sugars and related substances. Anal. Chem., 28: 350-356.
FAO (Food and Agriculture Organization). 2016. Production Year Book of 2015. No. 74. Published by FAO, Rome, Italy. P. 85.
Hunt, R. 1978. Plant growth analysis studies in biology. Edward Arnold Ltd., London. P. 67.
Malek, M. A., Mondal, M. M. A., Ismail, M. R., Rafii, M. Y. and Berahim, Z. 2012. Physiology of yield in soybean: Growth and dry matter production. African J. Biotech., 11: 7643-7649
Malek, M. A., Pramanik, M., Pramanik, M. H. R., Ismail, M. R., Rafii, M. Y., Puteh, A. B., Mondal, M. M. A. and Hasan, M. M. 2014. Evaluation and selection of rapeseed mutants for higher seed yield. J. Food Agric. Environ., 12 (1): 285-288
Mondal, M. M. A. and M. A. Malek. 2018. Role of morphological and reproductive characters on yield in mustard/rapeseed. Bangladesh J. Agril. Res., 43 (2): 361-368.
Mondal, M. M. A., Das, M. L., Malek, M. A. and Khalil, M. I. 2003. Performance of advanced generation rapeseed mutants under high and low input conditions. Bangladesh J. Agric. Sci., 30: 115-118.
Mondal, M. M. A., Fakir, M. S. A., Islam, M. N. and Samad, M. A. 2011. Physiology of seed yield in mungbean: growth and dry matter production. Bangladesh J. Bot., 40 (2): 133-138.
Mondal, M. M. A., Malek, M. A. and Puteh A. B. 2015. Variation in morpho- physiological characters and yield components of summer mungbean varieties. Bangladesh J. Bot., 44 (3): 469-473.
Mondal, M. M. A., Puteh A. B., Kashem M. A., Haque, M. A. and Razzaque A. H. M. 2014. Growth and dry matter partitioning in plant parts of lentil. Legume Res., 37 (4): 434-438.
Mondal, M. M. A., Puteh, A. B, Malek, M. A., Ismail, M. R., Rafii, M. Y. and Latif, M. A. 2012. Seed yield in relation to growth and developmental aspects of mungbean. The Scientific World Journal, Vol. 2012: doi:10.1100/2012/425168
Mondal, M. M. A., Puteh, A. B., Malek, M. A., Roy, S. and Rafii, M. Y. 2013. Contribution of morpho-physiological attributes on yield in lentil. Australian J. Crop Sci., 7: 1167-1172.
Prasad, V. V. S., Pandey, R. K. and Saxena, M. C. 1978. Physiological analysis of yield variation in gram genotypes. Indian J. Plant Physiol., 21: 228-234.
Stewart, G, R. and Orebamjo, T. O. 1979. Some unusual characteristics of nitrate reduction in Erythrana senegalensis. New Physiol., 83: 311-319.
Yoshida, S., Forno, D. A., Cock, J. A. and Gomes, K. A. 1976. Laboratory manual for physiological studies of rice. 3rd ed., IRRI, Los Banos, Philippines.