ড. প্রণয় বালা
সহকারী অধ্যাপক
০৭ জানুয়ারি, ২০২০ ১০:৪৭ অপরাহ্ণ
Study on Germination Related Seed Quality of Wheat Genotypes in Different Temperature Regimes
Abstract–The experiment was carried out at Crop Physiology and
Ecology laboratory of HSTU, Dinajpur during the period of
December, 2012. This experiment was carried out to evaluate
germination characteristics, viz., rate of germination, co-efficient of
germination and vigor indices of wheat genotypes under different
temperature regimes and to determine seed metabolic efficiency of
eight wheat genotypes under different temperature regimes. The
experiment was carried out in two factors completely randomized
design with three replications. The treatment factors three
germination temperatures (low, moderate and stressful) of 18, 24 and
32°C and eight wheat genotypes of which three (BARI Gom-25, BARI
Gom-26, BAW-1143) were heat tolerant (HT), four (Prodip, BAW1146, BAW-1147and BAW-1148) were moderately heat sensitive
(MHS) and one was heat sensitive (Pavon-76). Seeds of wheat
genotypes were germinated to study seed metabolic efficiency and
seed reserves mobilization at 18º, 24º and 32ºC temperature.
Temperature had a tremendous effect on speed of germination and
seed reserves mobilization. At moderate temperature (24º C), all the
genotypes showed the highest seed metabolic efficiency (SME) than
those of the lowest (18ºC) and highest (32ºC) temperatures. Heat
tolerant (HT) genotypes attained higher SME than those of moderate
heat tolerant (MHT) genotypes and heat sensitive genotype in all the
temperature regimes.