不同播种密度和发芽条件对烤烟不育系云烟87包衣种子萌发的影响

为找出不同播种密度和发芽条件对烤烟种子萌发的影响,笔者从播种密度、发芽床、发芽用水三个方面,采用烤烟种子在人工气候箱进行室内发芽的方法,研究了不同播种密度和不同发芽条件下对烤烟不育系云烟87包衣种萌发的影响,结果表明:不同播种密度比不同发芽条件,对不育系云烟87包衣种子萌发的影响更大。烟草种子在进行检验时,播种密度宜采用100粒/皿,适宜发芽条件为2层滤纸加自来水的处理好。此时,云烟87包衣种子的发芽势、发芽率及同步指数分别为76.0%、89.0%和0.49。

Effects of Sowing Density and Germinating Conditions on the Germination of Flue-cured Tobacco Male Sterile Yunyan 87's Pellet Seed

To find the effects of sowing density and germinating conditions on the germination of flue-cured tobacco seed, the flue-cured tobacco seed inside germination was under an artificial climate chamber. The study on effects of sowing density, germinating conditions on the germination of male sterile Yunyan 87 (a flue-cured tobacco variety) pellet seed was conducted from 3 aspects ranging from sowing density, seedbed to watering. The results indicated that different sowing density posed greater effect on the germination of Yunyan 87''s pelleted seed than the germinating conditions did. When testing the seed germination, the suitable sowing density is 100 seeds per petri dish filled with 2 layers of filter paper soaked with tap water. Under these conditions, the germination force, the germination rate and the synchronization index of the pellet seed of Yunyan87 reached 76.0%,89.0% and 0.49 respectively.