The reaction of balm mint ( dracocephalum moldavica ) to the salinity levels from sodium chloride in germination and plantlet stage

Subject Areas : crop production

Alireza Pirzad ¹ , رضا درویش زاده ² , رئوف سیدشریفی ³ , محمد صدقی ⁴

1 - Associate Professor, Department of Agronomy and Plant Breeding, Urmia University, Urmia, Iran
2 - دانشگاه ارومیه
3 - دانشکده کشاورزی دانشکاه محق اردبیلی
4 - دانشگاه محقق اردبیلی

Received: 2013-08-28 Accepted : 2015-01-15 Published : 2014-07-17

Keywords: balm mint – germination – salinity – sodium chloride – plantlet,

Abstract :

To study the germination and plantlet growth in heterotrophic stage of balm mint, an experiment was carried out in complete random plots in four replications 0, 4, 12, 16 and 20 DC Siemens on sodium chloride. In this study the impact of sodium chloride on the percentage and speed of germination , and the percentage of the reduction of germination in balm mint was not meaningful, but it was significant for the index of germination, time to %50 germination, the length of stalk and rootlet to the length of the stalk and rootlet and the dry and wet weight of plantlet. The highest ( 122 hours ) time of germination, 50 percent of the seeds related to the salinity of 4 and 20 DC Siemens to meter respectively. The longest stalklet (3.91cm ) and rootlet ( 1.97cm ) were obtained from control treatment and the lowest stalklet length ( 1.11cm ) and rootlet (0.46cm ) of 20 DC Siemens to meter. This difference in the process of length changes, led to the maximum and minimum ratio of stalklet length to rootlet respectively in the salinity of 4 and 16 DC Siemens to meter. The highest wet weight ( 95.7 mg ) and dry ( 7.68 mg ) of the plantlet were obtained from salinity of 4 and lowest wet weight ( 64.5 mg ) and dry ( 5.73 mg ) of the plantlet were 20 DC Siemens to meter.

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