COMPARISON OF VARIOUS SEED PRIMING TREATMENTS FOR SEED GERMINATION, SEEDLING VIGOR AND POD YIELD OF YARD LONG BEAN

Abstract

The present piece of work was conducted at the research field, Sher-e-Bangla Agricultural University, Dhaka from March, 2017 to June, 2017 to find out the effect of various seed priming treatments for seed germination, seedling vigor and pod yield of yard long bean. The experiment consists of thirteen treatments viz. T 0 = No priming, T 1 = Hydro priming at 12 hrs, T = Hydro priming at 18 hrs, T 3 = Hydro priming at 24 hrs, T 4 2 = Hydro priming at 30 hrs, T 5 = Halo priming (1% CaCl 2 ) at 12 hrs, T 6 = Halo priming (1% CaCl ) at 18 hrs, T 7 = Halo priming (1% CaCl 2 ) at 24 hrs, T 8 = Halo priming (1% CaCl ) at 30 hrs, T 9 = Halo priming (2% KNO 3 ) at 12 hrs, T = Halo priming (2% KNO 3 ) at 18 hrs, T 11 = Halo priming (2% KNO 3 10 ) at 24 hrs, T = Halo priming (2%KNO 3 12 ) at 30 hrs. The experiment was laid out in randomized complete block design (RCBD) with three replications. The result showed that seed priming had significant influence on germination percentage, speed of germination, vigor index, fresh weight of seedling, dry weight of seedling, number of branches plant -1 , first flowering of plant, number of pods plant , pod weight, , yield plant -1 and weight of 100 seeds. In case of seedling growth and yield parameter treatment T 5 (Halo priming 1% CaCl at 12 hrs ) showed the highest value of germination percentage, speed of germination, vigor index, and fresh weight of seedling, number of pods plant -1 2 2 , pod weight, yield plant , weight of 100 seeds (86.66%, 6.76, 1833.80, 1.43g, 73.67, 24.93 g, 1500.80g and 16.37g), but T (No priming ) showed the lowest value (36.66%, 1.18, 651.53, 0.31g, 16, 10.93g, 310g and 8.53g respectively). There had no significant effect of seed priming on root length, shoot length, seedling length and pod length of yard long bean. From this experiment it was clearly observed that seed priming played an important role in the field performance of yard long bean (BARI-Borboti 1). Actually treatment T 0 12 hrs) showed better field performance. 5 (Halo priming 1% CaCl -1 2 2 -1 at