بررسي اثرات جايگاه بذر در طول گل آذين 2 و ارتفاع بوته مادري روي هتروبلاستي بذر خاكشير تلخ

Study the effects of seed position along the inflorescence and height of mother plant on seed heteroblasty of London rocket (Sisymbrium irio)

This study was conducted in agriculture junior college of Darab in 2002. In laboratory and greenhouse, germination and seedling growth studies were made on seed harvested from different seed positions and height of mother plants of London rocket by complete randomized design with four replications. Treatments consisted of three heights of mother plant (40-60, 60-80, 80-100 cm) and three seed positions along the inflorescence included of: 1- Seeds in low position of inflorescence (seeds of the first to fifth siliceous in inflorescence) 2-Seeds in middle position of inflorescence (seeds of the sixth to tenth siliceous in inflorescence) 3-Seeds in upper position of inflorescence (seeds of the eleventh to fifteenth siliceous in inflorescence). The results in laboratory showed that in three gimps of mother plant seeds of the sixth to tenth siliceous in inflorescence had the maximum germination percentage and the seeds of first to fifth siliceous in inflorescence produced the tallest length of root. Also, in height of 60-80 cm of mother plant, the seeds of sixth to tenth and first to fifth siliceous in inflorescence produced the tallest length of shoot. In greenhouse experiments, the seeds of sixth to tenth siliceous of inflorescence in height of 60-80 cm of mother plant produced the maximum number of plants and the seeds that harvested from sixth to tenth siliceous of inflorescence in height of 80-100 cm of mother plant had the maximum height of mother plant in pots.