Effect of Osmopriming of Boro Rice Seeds on Field Establishment of Seedlings

M A R Sarkar,P K Roy,A Dey,S K Paul

doi:10.3126/ijasbt.v1i4.9131

Abstract

An experiment was conducted at the Seed Laboratory of the Department of Agronomy, Bangladesh Agricultural University, Mymensingh during the period from January to April 2012 to study the effect of osmopriming of Boro rice seed (cv. BRRI dhan29). Seeds were soaked in 1%, 3% and 5% solutions of ZnSO4, KCl and CaCl2 for 24 hours, respectively, with 30 hours incubation at 35°C temperature. Seed quality tests such as percent germination, mean germination time, vigor index, shoot length, root length, shoot dry weight and root dry weight of rice seedlings were measured for all treatments. Population m-2 was also calculated to investigate the field establishment of primed seeds. The highest germination, vigor index, population m-2, shoot length and shoot dry weight at 15 and 30 DAS, root length at 15 DAS, root dry weight at 15 and 30 DAS and the lowest mean germination time was observed from priming of seeds with 3% ZnSO4. Exceptionally, priming with 3% CaCl2 showed the highest root length at 30 DAS. On the contrary, 3% and 5% CaCl2 priming treatment showed the lowest germination, vigor index, population m-2, shoot length and shoot dry weight at 15 and 30 DAS, root length at 15 DAS, root dry weight at 15 and 30 DAS and the highest mean germination time. It can be concluded that rice seed (cv. BRRI dhan29) can be primed with 3% ZnSO4 solution for improving germination and field establishment of rice seedlings.DOI: http://dx.doi.org/10.3126/ijasbt.v1i4.9131 Int J Appl Sci Biotechnol, Vol. 1(4): 228-232

Highlights

Rice (Oryza sativa L.) is life for most people living inAsia
The lowest mean germination time was obtained in seed primed with 3% ZnSO4 solution followed by 1%
The highest shoot dry weight at 15 days after sowing (DAS) of rice seedlings (0.063 g) was obtained in seed primed with 3% ZnSO4 solution followed by 1% ZnSO4, 1%

Summary

Introduction

Rice (Oryza sativa L.) is life for most people living inAsia. Rice has shaped the cultures, diets and economies of thousands of millions of people.Considering its important position, the United Nations designated year 2004 as the International Year of Rice.It is the grain with the second highest worldwide production after maize (FAOSTAT, 2010). There was significant effect on germination, mean germination time, vigor index, shoot length and root length of rice seedlings due to osmopriming treatments. The highest germination was obtained in seed primed with 3% ZnSO4 solution followed by 1% ZnSO4, 1% KCl whereas the lowest germination was found in seed primed with 3% CaCl2 solution for 24 hours.

Results

Conclusion